There is nothing better to fix the broken things than the best welding machine! You can use a welding machine to fix almost anything. From steel to iron and other metal types everything is easy to weld if you have bought an appropriate welding machine.
But welding machine comes in a plethora of varieties and are specifically meant for different purposes.
How to ensure that you have purchased the right kind of machine?
Buying a welding machine requires you to invest a decent amount of money, and you cannot go wrong with the buying decision.
In this article, we have covered every type of welding process and machine, along with a thorough explanation of what kind of machine is best for you.
- 1 Types of Welding Processes
- 2 Spot Welding
- 3 Inverter Welding
- 4 MIG Welding
- 5 TIG Welding (Tungsten Inert Gas)
- 6 Arc Welding
- 7 Plasma Arc Welding
- 8 Inverter Vs Transformer Welder
- 9 Welding Machines – FAQs
Types of Welding Processes
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Welding machines have a multitude of types that ranges from the simplest ones to the most complex ones. Every machine listed here requires a different power source, different skill level, and delivers a different type of welding bond.
Here are some types of welding processes you should know.
Spot welding is greatly used in the automobile sector for manufacturing vehicles and repairing them. The mechanism of this welding type is quite basic and straightforward.
In layman, spot welding works on a specific spot with the help of a staple gun.
Working Process of Spot Welding
Spot welding incorporates two copper electrodes that are mounted on the layered metal sheets. The flow of electricity moves from copper to other metals like aluminum and steel, which you want to weld.
The friction generated during the process makes the two metals molten, and they get fused or bonded together.
Spot welding is useful for welding various metals with the utmost ease. In the end, the welder gets a spot like a weld which holds multiple pieces of vehicle frame together.
Have you ever paid attention to the bare skeleton or the frame of a car?
The welds located on the joints are made using spot welding.
If you need to weld a metal frame of aluminum and steel, then spot welding is an excellent choice for you, and you should buy a spot welding machine.
Some Industries Which Use Spot Welding
Spot welding has a myriad of applications in distinct industries like railways, aerospace, automotive, medical building and construction, metal furniture, electronics, and much more.
The core reason why these industries use best spot welding machines is the strength of the bond and the ease of welding. Some industries have even deployed robots for carrying out the spot welding process.
Inverter welding is a new phenomenon in the market and is useful in carrying out operations in multiple industries based on the advantages it offers. Inverter welding uses a silicon-based technology, and there is no need for any bulky transformers.
After the inception of inverter welding, some people faced multiple issues, but with time it has embraced and is now a cost-effective and reliable option.
A core benefit of using inverter welding is the compactness and portability it offers. Some inverter welders have a briefcase like built, and you can carry them without any hassles.
The transformer mounted in these welders is also compact and efficient enough to deliver an excellent welding experience. Also, best inverter welders work on less power and you can use them on the regular power supply which is available at your home.
Who Can Use Inverter Welding?
Inverter welding is an excellent choice for small commercial business owners who want something to operate in their offices or workshops. Also, this welding technique consumes less power as compared to other welding types.
You can keep the best inverter welder anywhere, as it consumes less space!
MIG (Metal Inert Gas) welding is also as brazing in some countries. MIG welding is a great option if you want to weld two or more metals in a joint or flat piece.
Working of A MIG Welder
The working of the best MIG welder is quite complicated as there are multiple elements involved.
The process starts with clamping an electrode on the metal the operator is working with. Then the welding machine feeds wire to the metal surface with the help of welding gun. The wire used in the feeding process acts as a second electrode and also helps in forming an electrical arc between the two metals that you want to weld.
The gas used in this welding plays a vital role as it fortifies the weld from getting contaminated.
Using the best MIG welder is an easy task when you have the right equipment on board.
All you need is:
- A push/pull torch
- A lightweight welding gun
- A soft-start feature
The Types of Metals You Can Weld Using A MIG Welder
If you want to weld stainless steel, steel, aluminum, copper, brass, and nickel alloys, then MIG welder is a great option. With the help of soft-start feature and a lightweight gun, you can attain a weld that is robust and smooth.
Skills Required To Use A MIG Welder
You don’t have to be a professional for using a MIG welder. Even beginners with zero skills can start using MIG welder if they go through the instruction manual.
TIG welding which is also known as GTAW (Gas Tungsten Arc Welding) is a widely practised technique from decades. The process involves the welder to make an arc between the base metal and the tungsten electrode which is non-consumable in nature.
When the arc touches the metal, it forms a molten pool. Thin filler wire is then slowly inserted into the molten pool to complete the weld joint. During the whole process, the shielding gas fortifies the joint from getting oxygenated or contaminated.
There is no need for flux in TIG welding, and the finished weld is free from slag and has some corrosion resistant properties inherited from the parent metal.
Industries That Use TIG Welding
TIG welding is useful on a wide scale in different industries, and some industries are solely dependent on the best TIG welders for carrying out their daily operations. Industries like aerospace, spacecraft, aeroplanes, use this welding due to the corrosion-resistant welds it provides.
Benefits of TIG Welding
TIG welding is beneficial for those who need precise welding. Also, TIG welding offers great control with the help of a remote control switch.
Arc welding holds great prominence around the world and is one of the most followed welding technique. Arc welding is solely based on the generation of an electric arc between the electrode and the metal which forms a puddle for the filler material.
The types of arc welding include STICK (Shielded Metal Arc), Flux-cored arc, MIG, TIG, and Submerged Arc.
Most welders around the globe choose best arc welders because it is cheaper and easy, as compared to other welding techniques.
Arc Welding Has Two Terminologies:
- Arc welding with non-consumable electrode
- Arc welding with consumable electrode
Arc Welding With Non-Consumable Electrode
TIG is the type of arc welding that requires a non-consumable electrode. The inert gas used in the process keeps the contaminants away. There is a separate filler material because the tungsten doesn’t break-down and is a non-consumable electrode.
Arc Welding With Consumable Electrode
Stick arc welding works on the consumable electrode. The stick used in the process acts as an electrode and filler material. Stick welding is a preferred technique for repairing and constructions, but welding takes a lot of time and the welds can be uneven if proper precautions are not followed.
Plasma Arc Welding or PAW works on plasma, i.e. hot ionized gases. When these gases come in contact with the metal it forms a molten puddle which further generates into the weld. The best part about PAW is the precision and swiftness of the welding process.
The plasma or the ionized gases are very precise and can easily cut through any metal.
Power Source Needed In PAW
The Plasma arc welding works on a DC supply to ignite the electric spark between the welding plates and the electrode. A considerable benefit of best plasma welder is that it can work on low as well as high ampere that ranges from 2 amps to 300 amps.
Applications of Plasma Arc Welding
- PAW is useful for aerospace and marine industries due to the strong welds
- It is great to use for welding pipes which are made of titanium and steel
- PAW is an excellent option for coating the turbine blades
- Electronics industries use PAW for welding electric joints
Advantages of Plasma Arc Welding Offers
- It can work on low amperage
- PAW produces a more stable arc and better precision
- High penetration rate
Which Welding Machine Is Best For You?
You should buy a welding machine that is capable of satisfying your requirements in the budget range you have. There are a number of factors that impact the type of welding machine.
Here is a comparison table to help you with a better explanation.
|Skill Set Required||Moderate||Expert||Beginner||Beginner||Expert||Moderate|
Based on the table mentioned above you can evaluate the type of welding machine you need. Make a checklist of the metals you need to weld, and then have a look upon your skills. If you know how to weld, then go with machines that require a moderate and expert level of skills. Else you can settle down with a machine that requires beginner skills.
Inverter Vs Transformer Welder
The difference between inverter and transformer welder is humongous and is a reason for hot debate among the people. Both transformer and inverter welders have some different traits and are useful for various purposes.
In terms of weight, you will see a significant difference between the transformer and inverter welder. Inverter welder is extremely light in weight when compared to transformer welder. If you have stationary work and there is no need for carrying the machine with you, then a transformer welder is a great option.
On the other hand, people who need a portable option should buy inverter welders as these are easy to carry than transformer welders.
Longevity is the total timeframe for which a welder can serve you. For those who need something to work on for many hours should select transformed welder, as transformers have a nature to work for longer durations.
Inverter welder delivers less longevity because it is a new phenomenon, and the transformer used in inverter welders is small in size.
Stability and Efficiency
Transformer welders are out there for a long time and are a prominent choice among the welders. But inverter welders are also gaining equal prominence in terms of stability and efficiency.
Now inverter transformers can work both AC (Alternating Current) and DC (Direct Current), and it has increased the efficiency and arc stability to commendable levels.
If you need something that is more stable and efficient, then you should buy inverter welder.
|Stability & Efficiency||Transformer Welder||Inverter Welder|
|Supports multiple base metals||NO||YES|
Common Mistakes Beginners Commit While Purchasing a Welding Machine
Buying a welding machine needs you to be an experienced buyer. If you are a beginner and want to handpick the best tool then here are some common mistakes you need to avoid at any cost.
Don’t Fall For the Cosmetics
Many people have the misconception that if a welding machine appears in great condition, then it works well. But this is not the case here!
A machine that looks well may not work up-to-the-mark. So apart from checking the outer cosmetics pay attention to the mechanism of the machine. Check every single thing before you buy the machine.
Not Checking the Cooling Fans
Welding is a process that generates a lot of heat, and you need to make sure that the welding machine has a cooling fan. Doubtlessly, massive welding machines can have more than one cooling fans. Inspect whether the machine has a powerful cooling fan to avoid all the future hassles.
Not Focusing On the Welding Leads and the Power Cord
Pay close attention to the type of welding leads and power cords available with a specific product. Make sure that everything is compatible with the welder and is branded and certified product.
Welding can be dangerous if you use poor quality and defected equipment.
Look For Control Dials and Display
Some welding machines have control dials like one for current, and other for temperature, whereas some machines have no control dials and other systems. If you are a beginner and have no experience of using a welding machine, then don’t buy a machine that lacks basic features like control dial and display. It will help you in checking the temperature of the machine and also you will get the assurance that you are using your welder in a controlled environment.
Welding Machines – FAQs
How to Prevent Dangers during Welding?
Welding is a process that can lead to dangerous outcomes if proper preventive measures are not taken care of. You can wear sturdy gloves, and protective glass to cover your eyes during the process. Also, conduct the welding process in an open area and keep a fire extinguisher with you.
What Type Of Welding Is Best For Titanium Metal?
If you want to weld titanium pieces, then you should go for plasma arc welding. PAW offers excellent precision, and you can weld even the smallest of titanium pieces with ease.
Can I Refill The Gas Cylinder Once It Is Empty?
Yes, you can get your gas cylinder refilled once it is empty. Consider visiting a nearby workshop for refilling the cylinder. Don’t carry out the refilling process at your home as it can lead to an explosion.
Also, Read: Best Welder for Beginners 2020 guide!
Wrapping It Up
Welding machines are incredibly crucial for fixing and welding purposes. So it is indispensable for you to buy the best welding machine to get the best output from your welds.
Make sure that you are not committing the common buying mistakes when purchasing your welding machine.
Keep an eye on every factor and the start scrutinizing for the best machine that justifies the real value for your money and is efficient enough to satisfy your requirements.
In case you have multiple requirements and a low budget then you can go with the best multi-process welders which are useful for welding different types of metal surfaces.