Tig Welder

How to weld cast iron?

June 19, 2023November 8, 2022 by admin

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Welding cast iron can be problematic for welders due to a significant amount of carbon. Carbon content in cast iron is typically between 2% and 4%, with other elements such as manganese, chromium, nickel, molybdenum, copper, etc. However, having a higher percentage of carbon proves to be a nightmare for most welders as the above rate is ten times more than what is present in the steel.

It is pretty challenging to crack cast iron without welding as, besides the elements mentioned above, they also contain traces of sulfur and phosphorus, as adding impurities makes the iron stronger.

How many grades of cast iron are included?

Before going towards the steps, let’s know how many grades of cast iron are available.

Grey iron
White iron
Ductile iron
Malleable iron

These five types of cast iron are so identical that it is impossible to distinguish them from each other without a thorough analysis. Nevertheless, cast iron is durable and has been used for many years with high resistance to getting rusty.

What are the steps to weld a cast iron?

The steps include;

Determine the welding area
Using electrodes
Pre-heating before welding
Cooling down

Determine the welding area:

The process is quite complicated. It is harder to weld a rusty part than a shiny brittle one.

Joining two broken cast iron pieces through welding is not a good idea. Brazing in this regard is a good idea. Repairing the cast iron damaged part with welding is preferable, like fixing the cracked part or filling the hole in the cast iron.

What should you do to repair the cracked part of cast iron?

It is obvious to find the crack in the iron before repairing it. If you see a black mark as a crack, you will observe the piece of iron keenly. You can also smooth the surface so it shows the shot more clearly.

If you prefer to drill a hole, the act will prevent that crack from propagating. Drilling a little bit past the visible crack’s end is the most appropriate way in this regard. Using this method, the fracture will cease after reaching the hole. It lessens the possibility that a fracture on the other side of the hole will let the crack continue where it left off.

It’s improbable that the item will remain whole after being welded back together if the fracture ends aren’t drilled before welding. It can simply continue to fracture while you weld it or shatter it eventually. Until you reach the crevice at the bottom, grind down.

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Salient Features

Powerful and efficient: The LOTOS MIG175 Mig Welder is equipped with a 175-amp output, providing ample power for welding a variety of materials, including stainless steel and mild steel. Its high-quality components and advanced technology ensure efficient and precise welds, making it suitable for both professional and hobbyist use.
Free spool gun included: The LOTOS MIG175 comes with a free spool gun, which adds versatility to your welding capabilities. The spool gun allows for precise and controlled welding of aluminum, providing excellent results. This additional accessory enhances the welder’s value and expands the range of materials you can work with.

Using electrodes:

Only some electrodes are made to weld cast iron properly, as most of them cool down quickly, so they cause cracks and do not join the broken part accurately. The best electrodes in this regard are:

Nickel-rich content:

The electrode is among the best and can join the iron, which is abundant in nickel. However, it is expensive and does not work on thick cast iron. But it has the excellent feature of not getting cool quickly.

For stainless steel:

Cast iron does not change its properties or harden like iron consumables when joined with stainless steel. It isn’t easy to employ since it does not considerably expand and contract during the heating and cooling of the fusion process. It produces a process that is machinable after welding.

Brazing:

We have two options for brazing bronze. We may use oxy-acetylene or a Tig welder. We can offer a solid sealant between two components that are trying to unite or in a crack. The two surfaces will be joined by brazing in this case without cast iron’s fundamental qualities being altered.

Pre-heating before welding:

Heat before welding is a better approach as it prevents cracking due to pressure. As it is hard to control the heat, you must have sufficient experience in this regard.

When iron is heated to 500 to 1300 degrees Fahrenheit, its internal stress is reduced. This allows the iron to be under the heat zone so that the cast iron will not crack due to pressure.

Measure the temperature frequently using the thermometer, most probably an infrared thermometer. But if you lack it, you can also determine the temperature with a keen observation.

Step 1: The color of iron changes according to temperature and represents the dull red color on heating up to 900 Fahrenheit, but in sunlight, you will not be able to see this change. A room with minimum light would be the best approach in this regard.

Step 2: Don’t be greedy; complete the work by boosting the heat flame. You must show patience and weigh until the iron becomes brick red or bright red at a temperature above 1300 degrees Fahrenheit.

Step 3: Heating a small welding area could be better as the pressure will crack the iron cast. You need to heat the whole part if possible. Otherwise, heat the larger iron region to bear the pressure effectively.

Cooling down:

Finally, you have to cool down the iron after the whole process. The process must be slow so that the iron will join appropriately. Never allow water or compressed air to engage with the welded part of cast iron.

It is a very time-consuming process. To get a perfect weld, it will be good for you to cool down the iron for 2 to 3 days. The best way to cool the welded part is to put it in the sand. Uniform cooling is required to achieve a perfect weld.

Some frequently asked questions

1. Can you use a MIG welder to weld the cast iron?

We can use the MIG process in this regard, but it could be better for cast iron welding. For cast welding, an MMA stick is preferable.

2. Why is it difficult to weld cast iron?

Heating other metals causes expansion, casting iron cracks down on the heating. So that is the reason behind the difficulty a welder faces while welding cast iron.

3. What if we braze rather than weld the cast iron?

Welding is best for repairing the damaged area, but if you want to join the two broken parts, then brazing is preferable in this regard.

4. What kind of metal is unable to weld?

Different alloys, including aluminum and steel, titanium and steel, and aluminum with copper, are impossible to weld due to their metallurgical properties.

Final thoughts:

In the above discussion, we have briefly explained cast iron welding. The method is complicated for an inexperienced person, but they can firmly weld the damaged part of the iron. Carefully read the steps mentioned above if you don’t want to confront any difficulty.

I hope you have enjoyed this informative blog.

How to weld exhaust pipes with a stick

June 19, 2023October 21, 2022 by admin

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What are exhaust pipes?

To operate automobiles efficiently, exhaust pipes are used to maintain a proper and stable environment for vehicles. This is due to their ability to diffuse various gases which are hazardous to human health and driving it. With this, exhaust pipes are also used in kitchen hoods for removing cooking heat and maintaining the homeostatic temperature of the human living area.

Gases evolving from the exhaustion of fuel:

Harmful gases such as carbon dioxide (CO2), carbon monoxide(CO), and various bicarbonates are released due to the exhaustion of fuel being used to drive them. Such harmful gases cause significant harm to human health if not removed immediately and a person inhales them. So, for this reason, exhaust pipes are used in them to maintain a human-friendly environment.

Are these gases also dangerous to the environment?

Yes, of course, carbon dioxide is called an exhaustion poison because it can harm another environment in the same way it affects human health. If animals inhale it they will be at a higher risk of getting rheumatic diseases. In the same way, it affects plants, although as the result of photosynthesis they produce, we all know that everything in access is the human enemy. So, for this reason, the exhaustion of these gases is extremely crucial to maintaining a suitable environment for living beings.

Read Related Post: Best Portable Stick Welder

The Advantages of exhaust pipes:

Retaining stable environmental temperature.
Air ventilation.
Removal of several gases.
Increases fuel efficiency.
Maintain the quality of the vehicle engines.
Reflects your attained power.

The Exhaust pipe provides a more efficient release of hazardous gases from the vehicle, hence proving a healthy, safe life to every living being, whether animal or plant.

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Ultra-Portable Design: Compact and lightweight construction enables easy carrying and maneuverability, making it suitable for on-the-go welding tasks.

Digital Display: Provides clear and precise information on current settings and welding parameters, enhancing accuracy and control during welding operations.

Damaged exhaust pipes:

If for some reason, exhaust pipes get damaged, they should be replaced as soon as possible because they not only affect the engine capacity but also causes significant hazardous effects on human health by retaining poisonous gases in the automobile engine which escape through air-conditioned windows and can be inhaled by humans, resulting in death. Once the pipe gets damaged, it should be altered as soon as possible.

Disadvantages of damaged exhaust pipes:

This causes carbon dioxide, carbon monoxide, various acids, and bicarbonate to get released into the environment.
Disturbs inhaled air quality
Causes the engine to get functionally poor soon.
More fuel consumption takes place as engine quality gets too low.
Causes plants to die down due to the release of such risky gases.
Can cause inhaling diseases in humans.

So, for the above-mentioned reasons, the exhaust pipes of the engine should be welded secondhand.

Welding of exhaust pipes:

To conserve the significant shape and features of the exhaust pipe it should be welded. Although there are various techniques for joining the exhaust pipe such as soldering and brazing, the best way is to weld that area of damage as it is more suitable and human-friendly.

Method:

First, take the exhaust pipe out of the engine carefully and place it on a smooth table, attaining a leveled surface for the joint and metal cooperation. Then stand by there and take a welding torch, applying the heat on an angled surface, keeping your head away. Then blow the torch and press down on the joining end of the metal so it gets attached firmly and smoothly. Place the joined metal area for some time, and then, after taking a brush of oil and applying oil to the joined area, polish the bruise and give it a presentable look.

Material used:

For welding purposes, various machinery and tools are used, keeping in mind the requirements of the metal to be welded, maintaining its unique and harmonious presentation intact.

For the welding of exhaust pipes, the stick is used as it is easy to apply a torch and apply pressure over material having a small surface area. Now a question arises.

Read Recent Entry: Good & Cheap Stick Welder

Why is a stick used for welding exhaust pipes?

The 110 v plugged iron or the aluminum stick is used for welding purposes because the diameter of the exhaust pipe is not too big nor too small and has a moderate area where the thin stick can provide a much better finish to the work and we will be able to handle it more efficiently and accurately, keeping the quality of pipe rated to its original condition. For all these reasons, exhaust pipes are usually welded with the help of a 110v plug stick. Moreover, there are also many advantages to welding the exhaust pipe with a stick.

Comparison of welding pipe with a stick and by machine:

Sr	Welding with a stick	Welding with machines.
1	No separate shielding gas is required.	Shielding gas is required separately.
2.	It is Fairly easy.	It is difficult to process.
3.	Less time-consuming.	It is, however, more time-consuming
4.	Gives more cleanliness.	Can be less clean.
5.	Can be welded at less surface area.	Due to less surface area, machine work is not more efficient.

For the fine and finished look of a material entity, a stick is all the way better for welding purposes for giving it the minute details.

Is welding with a stick expensive?

No, welding with the stick is not too expensive as it doesn’t require much labor for making an antique and unique piece of labor to make exceptionally fine articles.

Tricks for making a better stitch at the welding site:

Wear sunglasses to protect your eyes from rays.
Maintain a proper angle away from the site.
View welded site from an appropriate distance.
Don’t work too close to the torch.
Ensure dryness of the surface.
Stand perpendicular to the welding material.
Have the best knowledge of work.

Which is the more efficient method?

Although welding with the machine has its advantages too, welding with a stick is much more efficient. So, welding a smaller area of the exhaust pipe is better through the stick method.

Conclusion:

From all the above-mentioned knowledge, it is obvious that welding with a stick is good of all for materials having a smaller surface area. So we decided to weld the exhaust pipe with a stick method using a 110v plugged iron for maintaining a cool, human-friendly environment.

Good & Cheap Stick Welder

June 20, 2023December 8, 2020 by admin

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In this article, you will find all the Good Cheap Stick Welder.

All that glitter is not gold. So being expensive does not always guarantee you that you will get what is needed for you. Sometimes our need is not the best equipment. The need changes as per our skill level. Maybe, in the beginning, we may start to use the expensive equipment but that equipment is so full of options. That being a new guy you cannot be able to operate it. In other cases, you may be a domestic user and you do not need sophisticated products. Then why to spend money on the features that you never need. A third scenario can be you are a small business owner and you do not require the welding equipment so frequently.

Whatever the case is if you are in the need of the Good Cheap Stick Welder. Then you are the best place to find one.

The best are collected. Then examined for the different features. Then on the basis of the features, these are recommended to use for the different people. Based on their needs. Find out if the product which suits you the best is included in this product list or not.

Don’t worry you will not be disappointed at all.

1. 160 DC Stick & TIG Welding Machine by Amico

Editor’s Pick

160 DC Stick & TIG Welding Machine by Amico

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Salient Features

Dual Voltage Capability: Supports both 110-volt and 220-volt power inputs, providing versatility and adaptability to different power sources.

Inverter Technology: Utilizes advanced inverter technology for improved energy efficiency, stable arc performance, and enhanced welding control.

Product Description and Features

If you are new to the welding profession or just a hobbyist. The hobbyist who is in the learning phase. Then this is the best machine for you to start with. LeJss in options, concise in work, and solid n results make it a perfect machine to start with.

Once you have started to work with this 160 DC Stick & TIG Welding Machine by Amico. You will understand the machine and can create the best welding work with the help of this.

This welding machine is a great choice to work with mid-range metals. This is the reason that this machine is not recommended to work with stainless steel. Don’t worry this can easily handle nearly all others in routine metals. You may find some difficulty with this machine to handle the large gap between the metal pieces.

The machine is of small size. This is the reason that it can be carried and stored easily at multiple places.

Aluminum is another weak area of this machine. You may be surprised than what is the reason that we are actually recommending this machine to you,

As mentioned before this is the best machine to start with. Minimum options and easy to operate is the strongest point here. Even then it has two welding styles to operate with. Ons is the Tig welding and the Other is the Stick Welding.

Pros

Dual-wielding style, TiG, and Stick
Portable as Small-sized
The Machine is simple to operate and easy to set up

Cons

Fewer welding options are available
Aluminum welding is not possible
Stainless steel is difficult to weld
Larger gaps may not be filled easily

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2. The Canadian Welding Machine Tig & Stick by EVERLAST

Product Description and Features

This is a wow machine. Do you know why? Because it comes with a warranty of five years. These leads have been longer in length. The total length of the leads is 8 feet.

This low priced machine has dual input voltage options. The weight and size of the machine are adequate to carry it. It weighs only 24.8 pounds. The machine makes it a

A slight issue with this machine is that it lacks the ability of plasma cutting. Although this is a portable machine. But due to this disability, this may not perform well in all the working situations.

A plasma cutting option is not needed at all.

Pros

Operative at Dual volta
This is a low priced product
The Machine is portable due to lightweight
The electrode leads are long enough
This machine can do welding by using two different technologies
The machine comes with a warranty of 5 years

Cons

Output amperage range is not very impressive
Customer service feedback is not very great.

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3. Green Easy Weld Welding Machine 298 Arc by Forney

Editor’s Pick

Green Easy Weld Welding Machine 298 Arc by Forney

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Salient Features

Adjustable welding parameters for optimal results.

Thermal overload protection for safety.

Product Description and Features

This machine provides you with the perfect value for the spent money. Really a cheap machine but rich in functionality. This can provide all minor domestic work welding easily. Light in weight this is a perfect machine to carry around. You can pick it at different locations in your home and can easily weld. The machine is equipped with a long strong handle. With the help of this handle, this machine can be carried easily. The weight of this machine makes it super easy to carry. The weight of the machine is slightly more than 13.70 pounds.

The machine is not good when it comes to the welding of aluminum. For this welding to do well in welding. This is necessary that it must be operated at a higher temperature. The progress of this welding machine is significantly improved at the higher temperature. This makes things difficult to work for all those metals that cannot be welded at a high temperature.

Pros

Best economical Price
Welding Starting is easy
The welding machine is highly portable
Best as a domestic welding machine
The supportive handle t carry the machine

Cons

Can not work for the metals needing low temperature to weld
No foot pedal is available for the gas flow maintenance.

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4. Soldering Stick Arc Dc160 A Welding Machine by Amico

Product Description and Features

Another low priced stick welding machine. The total weight of the machine is 14 pounds. As far as the functionalu=ity of this machine is concerned it provides more value than its price.

At 220 volts the machine is able to provide you a working time of 6 minutes in a given time slot of ten minutes. It means that it can provide a very impressive time cycle of 60%.

The machine can operate on dual voltage. We have just examined the performance of the machine at 220 volts. The other voltage this machine can operate is 110 Volts. Unfortunately at the 110 Volts, the performance of the machine is not very impressive. But the good thing is that the mobility of the machine is improved with this machine. As has been mentioned earlier, this machine is very lightweight. This lightweight makes this machine super portable. This portability is supported by the dual voltage. You do not have to worry about the available water supply.

The impressive feature of this machine is the strap to carry the machine. This shoulder strap makes it easy to carry the machine. The 14-pound weight and the utility to carry the lightweight portable welding machine. Make the things workable. You can carry it at the different places inside your house.

The impressive start is another additive feature of this welding unit. This can only take it less than 10 minutes to make the unit fully functional. You do not need to weight long for the machine

Pros

Super lightweight
Shoulder Strap to carry the machine easily
Best Value for the money

Cons

Take some time to start the machine properly
Machine Doesn’t work well at 110 volts

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5. Product at the deal – Arc StickWS099001AV Welding Machine by Campbell Hausfeld

Product Description and Features

Buy this machine with us and you can save 26%. The actual value of this machine is $149.99. Save your money and this machine is available for only $111.15. In this way, you will save $38.84.

The machine already has the cheapest price tag on it. This offer makes this machine super affordable. This can easily manage many different domestic tasks easily. Do remember that this machine can handle only small tasks.

If you are a newcomer to the art of welding and want to learn it with the most basic tool. This machine is perfect for you.

Being cheapest this machine does not miss the protection features. This machine provides protection against overloading. This overloading protection issue protects the machine from overheating.

This welding unit is capable of providing 70 amp as the output, operating at 115 volts this machine can provide the duty cycle of 20%. But at this duty cycle, the output amperage is low, which is only 50 amp.

This is a relatively low weight machine. Simple to carry and simple to handle. Equipped with a very stylish and comfortable handle to carry the machine is super portable. This machine provides you with all the functionalities a basic level welding machine can provide.

Pros

The Machine is on offer.
By pure
This is one of the cheapest available machines
Fewer Options make it easy to operate
Have the safety feature of overload protection.
This automatically provides the functionality of the Thermal protection too.
This machine has a suitable weight to carry
A super adjustable handle makes the carrying of the machine super easy.

Cons

The construction is not great at all
The machine is not very durable
The machine is of very limited use
The power cord is really very cheap.

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……………………………..

Shortest Practical Buyers Guide to Purchase the welding unit

You may come across a very long and lengthy buyer’s guide. Here we have made the shortest possible guide for you.

First thing First

A professional, a hobbyist, a domestic user, and an industrial worker all may have one thing in common. This common thing is that they all wanted to buy the welding unit. You can yourself fully aware of the fact that the requirements of these three welding buyers will be entirely different from each other.

Match the product with your list of requirements Do not rely on the claims. The manufacturer makes. This may be a possibility that the machine is very complicated and is filled with lots of features. What if you never need to use these features. This means that you are paying for the features you never need during the work. So be selective while choosing the machine only to pay for what you truly need.
The second thing to consider is the duty cycle. Depending upon the time you have to use the machine. Choose the machine which provides you the best duty cycle. If you are not a very frequent user of the elding unit. you may not require a very high duty cycle. The high duty cycle will eat your budget. Do not throw away your budget on a property you do not truly need.
The machine comes with multiple power input options. Depending on the circumstances available in your working area you may not need to go for multiple power options. Only a specific type of power input is enough for you. Find the best possible power option available.
Portability is a major issue. If you need to work in multiple places. You need to carry a machine from place to place. The heavyweight and the undesirable dimensions of the machine will make your work really very difficult. If you need a portable machine make sure three things

- The machine should be lightweight
- The machine should have the appropriate dimensions to carry
- The Machine must have support to carry it

Final Words

Welding is a difficult task to do. This is not an easy one. This art should have to be learned. If you don’t learn it please avoid it by doing it yourself. Ask for a professional that can do the work for you. Even if you have done learning the art of welding. Be sure to adopt all the security measures before starting your job.

How to choose a welder

June 19, 2023December 3, 2020 by admin

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This is not unusual for things to break. The need to repair the things are there. This is the reason that many devices to repair the things have been introduced. Welding Machines are one of those.

There are various techniques such as arc welding, semi-automatic welding, and TIG welding. Even many of the welding machines are available. I Honestly think that beginners are worried about which welding machine is suitable for their application. There are several types of welding machines, which are roughly divided into the following three types.

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Digital Displayed IGBT ARC Welder 110V&220V Machine

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Salient Features

Dual Voltage Capability: Supports both 110-volt and 220-volt power inputs, offering flexibility and compatibility with different power sources.

Easy Arc Technology: Incorporates advanced arc control mechanisms for smoother and more stable welding arcs, ensuring consistent weld quality and ease of use.

Shielded metal arc welder

Welding rods are set in the holder (the part that is held by hand) and are mainly used for welding iron. Speaking of general welding, this is what is usually done at the outside site by shielded metal arc welding.

Semi-automatic welding machine

Shielded metal arc welding uses welding rods, while semi-automatic welding uses wires.

When you press the switch on the torch, the wire comes out, and the wire melts and welds the base metal.

It is mainly used for welding iron by connecting carbon dioxide gas, but stainless steel and aluminum can also be welded by changing the wire and gas.

TIG welding machine

It is a completely different type of welding from the above welding and is also called argon welding because it uses argon gas.

As a feature, spatter (sparks) does not fly and it is suitable for welding stainless steel and aluminum.

Welding of iron is also possible, but it is suitable for welding details, and semi-automatic welding is more efficient when welding structures, etc.

Is it a feeling that dig welding is static welding while semi-automatic welding is dynamic welding?

Depending on the welding machine, there are advantages, disadvantages, orientations, and unsuitability, and you may not know which welding machine to use.

Even those of us who sell welders can be confused about which welder to use for this weld.

Therefore, I think that the most suitable welding machine is to select it on two parameters One is the Industry in which you use it and the second is the task for which you will use it.

By the way, when you simply say “welding”, you can think of it as arc welding or any other type of welding. Let us start our journey of exploration with ARC welding.

What is arc welding?

Normally, electricity flows through metal (conductors), right? However, when a high current is passed, the current flows even if there is a gap between the electrodes. This is called arc discharge, and arc welding is exactly the welding method that uses the heat of this arc discharge. In a familiar example, it’s a snap when you unplug the power outlet.

Are there various types of arc welding?

In particular, a method of welding while injecting gas to prevent high-temperature metal from reacting with oxygen in the air and oxidizing is called gas shielded arc welding. It’s like creating a barrier with gas around the metal being welded.

The gases used include inert gases such as argon and helium and mixed gases of inert gas and carbon dioxide (CO2). Gas is injected from the tip of a torch, but it is not suitable for outdoor work because the gas is blown off in a windy environment.

What kind of welding method is suitable for outdoor work?

Shielded metal arc welding and self-shielded arc welding outdoors

We recommend methods that do not use shielded gas, such as shielded metal arc welding and self-shielded arc welding. It is suitable for outdoor work due to its wind-resistant nature.

what! Is it okay to not have shield gas?

No, that’s not the case. Instead of injecting shield gas, a filler material (welding rod or welding wire) that is coated with a special powder called flux is used. Using it, when welding is started, this flux is decomposed by arc heat into gas, which protects the welded part and prevents it from oxidizing. In other words, both gas shielded arc and shielded metal arc welding require gas to protect the weld

What are molten and non-polarized types?

In addition, arc welding can be divided into two groups, “welded electrode type” and “non-welded electrode type”. The molten and non-polarized types have the following characteristics.

Welding type:

The electrode itself acts as a welding rod and melts.

Non-welded electrode type: The electrode itself hardly melts. It is necessary to prepare a welding rod separately.

Non-welded

Actually, there are many other things such as submerged arc welding and plasma welding. However, since it requires large-scale equipment and is not used much by individuals, I will omit it here. Then, let’s take a look at each welding method one by one. The first is non-welding TIG welding.

TIG welding (ideal for welding cars and motorcycles)

TIG welding is a welding method that uses tungsten (Tungsten) for the electrodes and an inert gas (Inert Gas) for the shield gas.

Tungsten has the highest melting point (melting temperature) of all metals, reaching 3422 ° C. Therefore, even if this is used as an electrode, it will not melt with arc heat. This is the reason why it is called a non-polar type.

What kind of welding method is it specifically?

The welding rod is melted and welded in the arc formed between the electrode and the base metal (metal to be welded). It has excellent stability and the molten pool can be seen clearly, so it is relatively easy to work, and high quality and clean beads can be drawn. TIG welding is a good choice for welding cars and motorcycles where the appearance is important because the finish is beautiful. However, there is a demerit that the welding speed is slow.

Shielded metal arc welding (ideal for outdoor work)

Shielded metal arc welding is a welding method that uses a welding rod such as Pocky as an electrode to generate an arc between it and the base metal (metal to be welded). The base metal is melted by the arc heat, and the melted electrodes (welding rods) are fused with the base metal. The electrode itself also serves as a welding rod.

Unlike TIG welding, shield gas is not injected.

The coating agent (flux) applied to the welding rod is decomposed by arc heat to become gas, which protects the welded part and prevents it from oxidizing. This coating (flux) also has the effect of stabilizing the arc. Due to its wind resistance, shielded metal arc welding is mostly used for outdoor work. The slow welding speed is a disadvantage

Shielded metal arc welding (hand rod) is explained in detail in this article.

Semi-automatic welding (ideal for a wide range of welding work)

A welding wire is set in the semi-automatic welding machine, and the welding wire is automatically supplied by the wire supply device. However, the welding work itself is manual, so it is called “semi-automatic”.

In shielded metal arc welding (manual welding), it is necessary to replace the welding rod when the welding rod becomes short, but in semi-automatic welding, this is not necessary, so work efficiency is good. Therefore, it is suitable for a wide range of work such as construction sites and maintenance of large vehicles.

Even if you say semi-automatic welding in a bite, it can be further classified according to the type of gas used / not used / gas.

MIG welding

You know it well. First is MIG welding. MIG stands for Metal Inert Gas.

Is it a method of welding metal using an inert gas as the shield gas?

Exactly. Only an inert gas (argon or helium) is used as the shield gas. The finish is beautiful, but the disadvantage is that the arc spreads and the penetration is shallow. Moreover, since argon gas is expensive, it is used only when welding special materials such as aluminum alloy, stainless steel, and heat-resistant alloy steel.

Next is MAG welding? What does MAG stand for?

Abbreviation for Metal Active Gas, which is a welding method for metal, which uses an active gas as the shield gas. A mixed gas of inert gas (argon or helium) and an inexpensive carbon dioxide gas (CO2) is used as the shield gas. By mixing carbon dioxide gas with the inert gas, the arc can be supplemented and energy can be concentrated, and the disadvantage of MIG welding (shallow penetration) can be improved. However, please note that it cannot be used for non-ferrous metals such as aluminum because carbon dioxide causes a chemical reaction.

CO2 welding. Is it a welding method that uses CO2 (carbon dioxide)?

That’s it. As with MAG welding, carbon dioxide causes a chemical reaction and cannot be used for non-ferrous metals such as aluminum, so be careful. Normally, arc welding with carbon dioxide causes more spatter than using an inert gas (mainly argon/helium), resulting in a poor appearance. However, on the other hand, carbon dioxide causes a chemical reaction with the arc, so a repulsive force is generated between the carbon dioxide and the arc, and the arc becomes thinner. As a result, there is an advantage that the heat energy is concentrated and the penetration is deepened.

Self-shield welding (ideal for a wide range of welding and outdoor work)

Finally, self-shield welding. What kind of welding method is this?

So-called non-gas semi-automatic welding. Instead of injecting shield gas, it is a method of using a welding wire coated with flux. Since it does not use shield gas, it is a wind-resistant welding method. It’s like a semi-automatic welding version of shielded metal arc welding.

It’s semi-automatic welding that doesn’t use gas

	Use / do not use gas	Gas type
MIG welding	use	Inert gas (argon / helium)
MAG welding	use	Active gas (mixed gas of inert gas and carbon dioxide)
CO2 welding	use	Carbon dioxide (CO2)
Self-shielded arc welding	do not use	– –

Comparison of welding methods

Various welding methods will come out and it will be confusing. I’ve summarized it below, so if you forget it, remember this table!

Comparison of welding methods

	TIG welding	Shielded metal arc welding	Semi Automatic Welding	Self Shield Welding
Electrode characteristics	Non-welded	Welding Type
Material suitable for welding	Mainly stainless steel (* Aluminum and magnesium are also acceptable for AC )	Iron (mild steel)	Iron Mild Steel Stainless steel and iron can be welded by changing the wire
Amount of spatter	Few	Many	Somewhat	Many
Outdoor use	NG	OK	NG	OK
Necessary equipment	Argon Gas	—	Carbon DiOxide Gas	—
the expendables	Welding rod, tungsten electrode	Welding rods	Welding Wire

How to choose optional parts

Welding cable

When performing shielded metal arc welding, there are many cases where the cable is not attached to the main body. Check the accessories before you buy them.

In most cases, 22 scales are sufficient, but if the current value is high, a cable with a larger cross-section is required. You may consult your electrician or an expert welder before buying.

Welding rods

Select a material that is close to the base material (material to be welded) and a material that matches the capabilities of the welding machine (φ2.6, φ3.2, φ4.0). If there is no material similar to the material, select a welding rod that has the same material properties (tensile, strength, hardness, etc.) as the base material.

Welding rods are greatly affected by moisture, so it is important to dry them thoroughly before use.

Welding helmet

Direct exposure to the intense light generated during welding can cause UV-induced corneal inflammation and infrared-induced retinal and corneal burns. Chronic exposure to direct welding light can lead to cataracts and damage to the retina. It is perfect if you also use protective goggles.

Since the shading degree number to be used changes depending on the welding current value, it is necessary to confirm whether the shading degree is within the range before purchasing.

Light-shielding protective equipment specifications Standard (JIS)

Shading degree number	7	8	9	10	11	12	13
Welding current value (A)	30-75		76-200			201-400

Welded shoes

With ordinary safety shoes, there is a risk that the mesh part will melt due to spatter and cause burns. When welding, use leather welding shoes that have excellent heat resistance and prevent deterioration due to high temperatures.

Final Words

That’s how to choose a welding machine. How was that? If you have any questions, please feel free to post them in the comments section.

Best Ac Dc Tig Welder

June 19, 2023October 16, 2020 by admin

YesRight 110V 120Amp Welding Machine Handheld Portable ARC Welder Gun Hand Held Welder Machine with Digital Display IGBT Inverter 6 Variable Current Adjustment for 1/16''-1/8'' Welding Rods #1

YesRight 110V 120Amp Welding Machine Handheld Portable ARC Welder Gun Hand Held Welder Machine with Digital Display IGBT Inverter 6 Variable Current Adjustment for 1/16''-1/8'' Welding Rods

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12% Off ~~$109.99~~ $95.99 (as of October 18, 2024 13:45 GMT +00:00 - )

PORTABLE HANDHELD WELDING MACHINE: The ARC Welder Gun measures is 9.8*10 inch, compact and portable design makes it easy to use in a variety of work environments without taking up too much workbench space. Itself weighs only 3.9 pounds and is great f... read more

Tig Welder is the common name given to the Tungsten Inert Gas. In this process, the current is transferred to the electric Arc. An electrode is used as the medium. This electrode is of non-consumable nature. This is the reason that the welder can completely concentrate on the welding process rather than looking for the condition of the electrode.

Best Ac Dc Tig Welder

Tig Welder With Stick & MiG Forney Green 324

Editor’s Pick

Tig Welder With Stick & MiG Forney Green 324

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Salient Features

Versatile 3-in-1 Welder: Offers TIG, Stick, and MIG welding capabilities in a single machine for versatile welding tasks.

Robust Performance: Delivers reliable performance with excellent arc control and consistent weld quality.

Product Description and Features

This is an equally good machine for both professional and hobbyist welders. This machine is capable of doing every type of welding. Because it is equipped with three types of welding technology. MIG and Stick are other than TIG technology.

The three types of welding don’t make the welding complicated. This is rather an easy job to switch between the welding technique. The machine operates at the voltage of 120V and 230V. This dual voltage operation facilitates the mobility of the machine. The machine provides its optimum performance at the 60 amperes. The optimal performance of the machine is a 60% duty cycle.

The machine is not very lightweight. On the other hand, the machine is really easy to carry. The reason for this is the handle to carry the machine. The machine is an excellent design and is really easy to carry. The reason is that the weight is equally distributed among the different.

Automation is an important feature of digital automation. This lets the user set the parameters exactly as these are needed.

The Machine is Good For

The machine is super portable
You do not need to worry about the voltage of the machine
Power Arc is really easy to manage
Stipulated tasks are really easy to perform

Diversion 180 TIG Welder by Miller Electric

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Diversion 180 TIG Welder by Miller Electric

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Salient Features

Precision Welding: Provides precise TIG welding performance for professional welders.

Portable Design: Compact and portable, ideal for on-the-go welding applications.

Product Description and Features

This ceramic and steel machine is not only durable but it is quite capable of doing the heavy mechanical work. This machine is a specialized TiG welding machine and does not have any other welding technology like the stick welding and the MiG welding technique.

The machines are either good for steel welding or aluminum welding. There are only very few machines that can perform both functions and can perform these functions well. Our Diversion 180 TIG Welder by Miller Electric is one of these kinds. This can perform both functions very well.

This is equally good for steel welding as well as for aluminum welding. This is a unique feature and very few welding machines have this feature. As far as the input current is concerned this machine can operate both at the Ac and Dc current. Quite flexible in terms of the input current the machine can be operated at 120 and 240 voltage. This makes it ideal for industrial work. This machine is good in terms of the duty cycle. The duty cycle of this machine is 35%. Although it looks less in the number but is good as it means the continuous welding.

This is a heavy machine. The weight of the machine is 50lbs. Even then it is a mobile machine. This is really easy to carry the machine due to its double handle. With the help of these two handles. Two people can easily carry this machine. Side by side. This machine is fully automated and truly a machine of the current modern era. Equipped with the remote control the machine also has a digital display. Both these features really facilitate the function of the welder. The digital display provides the live reading of the input and the output parameters.

The Machine is Good For

The Machine is made with durable material
This is really a heavy-duty work
The machine is easy to carry due to the double handle functionality
This machine is equipped with the pedal to control the flow of the gas

EZ- 500551- TIG 165i by Hobart

Editor’s Pick

EZ- 500551- TIG 165i by Hobart

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Salient Features

User-Friendly: Designed for ease of use and suitable for welding enthusiasts and hobbyists

Compact and Convenient: Compact size and easy-to-use controls for convenient welding.

Product Description and Features

The machine is good in many aspects. The machine has a unique feature as a fan. The Fan does stop the dust from coming into the system. Secondly, it maintains the temperature inside the machine. Even at the low amperage, the machine has the extraordinary quality of maintaining the good quality of the welding.

The automatic outflow helps in the safety of the shield. 230 V is the input of the power current. The machine can be operative on both the type of currents. The AC current and the DC Current. Both types of inputs have their own types of advantages and disadvantages. The aluminum welding is done through the AC output. While the stainless steel is perfectly done through the DC input.

The machine is durable and has weight. It has a weight of 23kg. This 23Kg weight makes it difficult to carry. The machine is not so difficult to carry even with the heavy weight. The reason is that the machine has dual handles. Two people with these dual handles can easily carry the machine. In this way, the weight is less than 12 kgs for a single person to carry,

The machine is full of security features. This is natural for the welding units to attain a high temperature. This high temperature can be harmful and may result in an accident. This accident can be fatal. To avoid these types of situations this machine is equipped with the auto-shutdown system at the high temperature. This shut down saves the welder from the accidents.

The amperage can be controlled remotely through remote control. This makes the process of welding precise and more reliable.

This Machine is GooD For

The machine is easy to operate
The Dual Machine Handle Make it Portable
The remote control can be used to control different parameters
The machine is equipped with a Fan
Excellent Protection Feature of the auto shutdown

TIG 200 Square Wave by Lincoln Electric

Editor’s Pick

TIG 200 Square Wave by Lincoln Electric

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Salient Features

Advanced Technology: Equipped with advanced controls and technology for exceptional TIG welding performance.

High-Quality Welds: Delivers precise and high-quality welds with outstanding arc stability.

Product Description and Features

Advance in features compatible with the ease of use. Very few welding machines have this capability. This machine is one of them. This is a truly dual-purpose machine that can perform Tig and stick welding.

Even with the dual functionality, the machine is really easy to operate. You can obtain both these functionalities from a single power source.

This is a perfect tool for both amateurs as well as experts. The dual functionality of DC current and AC current make it possible for the machine to do the aluminum as well as the steel welding.

For DC current at 120 volts the machine has a duty cycle of 25% the output of the machine with these parameters is 125 amperes. In the case of AC current with the same voltage, the machine has a duty cycle of 20% the output of the machine with these parameters is 75 amperes. The machine can provide maximum output in the form of amperes is 200 ampere for the tig welding and 170 amperes for the stick welding.

This machine does not lag institute features. In case of emergency to protect you from the accident the machine has a feature of automatic gas shut off. The digital display makes the operation of the machine easy. This machine is really easy to use

The machine is good for

It has the sport of dual voltage
The machine is easy to carry
The machine uses dual technology for the welding
It can be operated with the minimum expert level

160STH TIG & Stick welding Machine by Everlast Welders

Editor’s Pick

160STH TIG & Stick welding Machine by Everlast Welders

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Salient Features

Dual-Process Capability: Switch seamlessly between TIG and Stick welding for greater flexibility.

Efficient and Reliable: Offers efficient operation and reliable performance for various welding applications.

Product Description and Features

Perfection with the ease of movement is the key feature of this welding unit. This welding unit allows you to operate on two different voltages one is 120 volts and the other is 240 volts. This welding unit offers only light-duty modification. Due to this feature, it lacks the ability to weld aluminum.

This machine is really very economically priced. With a small transformer in the machine. The Tig torch has an organ regulator. As for as the power consumption is concerned the machine really consumes very less power. This is the reason that the duty cycle of this machine is also not very impressive. This machine operates at the duty cycle of 35%.

If you are a power-hungry type of guy then this machine is absolutely not for you. The machine is very lightweight. The total weight of the machine is less than 40 pounds. It comes with a shoulder strap. It is really easy to carry the machine.

This is a modern-day technology machine. It enables the user to use the digital display in order to set the operational parameters of the machine.

The machine is good for

really very easy to carry due to the lightweight
The shoulder strap makes it easy to carry the machine
The machine comes with the dual input power options
The power consumption is really very economical
The machine has a digital display.

K2535-2 Precision Tig Welding Unit by Lincoln Electric

Editor’s Pick

https://www.amazon.com/dp/B001EBWUZM?tag=tool-deals-us-20

K2535-2 Precision Tig Welding Unit by Lincoln Electric

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Salient Features

Precision and Control: Provides precise control over welding parameters for accurate and controlled welding.

Professional-Grade Performance: Designed for professional welders, ensuring superior weld quality and performance.

Product description and features

if you are thinking of inheriting your passion for welding to your children and even the grandchildren. Then this is the best machine for you to purchase. This machine is of such good quality that even your grandchildren can enjoy the welding with this machine.

This machine can provide you with a duty cycle of 10 to a hundred percent. At the amperage output of less than 23. The machine will provide you with a 100% duty cycle. If you install a 50-ampere breaker the machine performers will be of an optimum level for you. Although the installation of a 50-ampere breaker is not necessary.

This model can handle daily all materials very well. These materials include aluminum, magnesium, iron and stainless steel.you can easily control the outflow of the gas with the help of the foot pedal. This foot pedal allows you to control the output amperage even at the time of the welding.

The maximum voltage for which the machine can be set is 230 volts. The light tasks can be performed on the low level of voltage while for the heavy task you can set the voltage at a higher level.

The machine is not very easy to carry. In fact, this is not a portable machine. So it cannot perform the functions of a portable machine. The weight of the machine is 240 pounds.

The machine is best for

This is truly a multi-purpose machine
The machine requires low amperage to start
The machine is able to provide the hundred percent duty cycle but is really on low voltage.
This is a really very durable machine that can be inherited even by your grandchildren.

Conclusion

Time spent on choosing a technical instrument really saves your time. This is not every day when you will buy a technical tool. So do complete market research before choosing the AC DC tig welder.