Do you own any metal objects at home? The answer is definitely yes. Almost everyone uses metal-made utensils such as pots, pans, metal shelves, and so on.
If your metal items are broken, welding is a good and economical way to fix them. Moreover, welding can also join metal pieces together to create new items. Here, I will introduce to you the most prevailing types of welder at present.
Let’s find out.
Table of Contents
The Most Popular Types of Welder
MIG Welder (GMAW)
It is among the most simple welders for newbies to use. There are two kinds of this welder.
One utilizes bare wire while the other uses flux core. The first type is good for brazing thin metal pieces. And the second is very convenient for both outdoor and indoor uses as you will not need a welding power supply or flow meter.
The MIG welder is usually the favorite choice of DIYers or hobbyists thanks to its low cost.
TIG Welder (Gas Tungsten Arc Welding)
The TIG Welder is a tricky device, but it can provide more versatility.
When it comes to TIG welding, you will need to use both of your hands skillfully. One will feed the rod, whereas the other grips the welding torch.
This torch generates the heat and electric arc to weld almost every common metal such as steel, nickel and copper alloys, aluminum, titanium, and cobalt.
Also known as an arc welder, this is a classic soldering machine.
The welder gets its name because it applies a stick electrode welder rod to melt metal.
Although you may find this old-fashioned welder somewhat hard to handle, the budget-friendly price well justifies it.
Plasma Arc welder
As one of the most precise welders, it always appears in aerospace applications where the metal objects are extra slim (up to 0.015 inches), for example, engine blades or air seals.
Its technique is almost identical to that of a TIG welder. Nonetheless, the electrode is lower, and the heat comes from ionizing gases in the arc.
Gas welder is notably portable, but you can also use a TIG welder as an alternative in some cases.
Most gas welder kits include oxygen and acetylene sources. However, you may find some of them using Oxy – Gasoline, Methylacetylene – Propadiene – Petroleum, Butane/Propane, or Hydrogen.
Resistance welder (electric resistance welding)
Also known as an electron spot welder, the machine creates a direct current between two metal poles to melt small spots.
Apart from automatically completing simple projects, the resistant welder is much safer and easier to use than an arc or gas welder.
Nevertheless, the welder is inflexible because it can only join two pieces of metal overlapping each other. Moreover, you can feel secure on the price that is reasonable if compared to others.
You may find the welder safe since it joins metal items by pressure and vibration without heating them.
Instead, the strong pressure and vibration make the metals to interchange their atoms through diffusion. Also, there is a wide range of solid-state welder models such as roll welder, co-extrusion, ultrasonic, explosion welder, friction, high-frequency welder, diffusion, electromagnetic pulse, cold welder, exothermic, hot pressure, and induction welder.
Nonetheless, note that you will need to prepare the metal surface beforehand and spend a lot of money on these devices.
The last one in our list is the oldest welder used by blacksmiths.
This technique makes two pieces of low-carbon steel heated to nearly 1000°C as well as hammered together.
Due to its versatility, forge welder is regularly applied in product manufacture. However, besides its benefits, there will be several disadvantages as follows:
- Only applicable to low-carbon steel.
- The coal used to heat the furnace can harm the welds.
- Require advanced skills.
Flux-Cored Arc Welder (FCAW)
This welder utilizes the heat produced by a DC electric arc to join the workpiece instead of alternating current.
The arc discharge is created between a constantly fed consumable filler coil and the metal, which melts not only the filler metals but also the main metals.
In addition, the whole submerged arc zone is protected from the atmosphere by a shielding gas.
A number of alloys, plain carbon, stainless and duplex steels can be welded effectively with this welder.
So we have walked you through eight types of welder today.
Hopefully, after this article, you have obtained useful information and an overview of most types of welder.
Thanks for reading!