It’s been time immemorial since men are sticking metal together using the various category of Welding. Human civilization has developed numerous techniques for Welding. Every type comes with an individual bright and dark side.
Today we are going to talk about the What Are the Different Types of Welding and their characteristics. We’ve been through some brainstorming research and study to provide you with some authentic description about Welding.
Let’s tell you what are the different types of Welding
You’ll get to know about multiple types of Welding that are available on the business, but not all of them are worth your time and energy. That is why we have shortlisted 15 top welding types.
Let’s get in!
1.Gas Metal Arc Welding(MIG)
Gas Metal Arc Welding sets up between a convenient MIG wire electrode and work piece metals that give heat to the metals; as a result, they melt and stick together.
The process is of two types; semi-automatic or automatics. Direct current power or fixed is usually used with GMAW. The constant current system and alternating current can also be used.
To carry on, the standard essential tool is a welding gun, a wire feed unit, a power supply used in Welding, a shielding gas supply, and a welding power supply.
2.Shield Metal Arc Welding(Stick Welding)
Shield Metal Arc Welding uses a consumable electrode protected with a flux. An electric current is used to form an electric arc between the electrode and metals to stick them together.
Because of the variation and the easiness of its tools and activity, this welding procedure is one of the best and accessible welding processes.
SWAM is used extensively in the erection of large steel formation and industrial fabrication. This procedure is generally used for welding iron and steels, but aluminum, nickel can also be welded.
3.Gas tungsten arc welding(TIG WELDING)
Gas tungsten arc welding (GTAW) creates an arc between the anti-consumable electrode and the work for Welding. The weld is safeguarded from the environment by a shielding gas, which develops an envelope around the weld area.
It’s such a versatile process that you can use; it can be used on ferrous and nonferrous metals. You can use this process in any material- be it thick or thin. With or without filler metal.
The systems of operation for GTAW can be manual or automatic. Various types of tungsten alloys are used-Pure tungsten, thoriated tungsten, zirconiated tungsten is one of the categories.
Learning the basics of this type of Welding will increase the quality of the product for sure!
4.Electron Beam Welding (EBM)
1. Electron Beam Welding (EBM) is a fusion method that deals with a high-velocity electron beam to join to particles at once. The particles melt and flow collectively as the kinetic energy of the electrons is converted into heat as a reaction to the impact.
Electron beam welding also contributes to well-defined weld penetration control from a depth of fewer than 0.0001 inches. Presenting with high strength properties, maintaining up to 95% of the strength of the core materials has never been this easier before EBM.
The technique is done in such a process that hardly leaves any impurities behind.
5.Atomic Hydrogen Welding (AHW)
Atomic Hydrogen Welding (AHW) uses an arc connecting two tungsten electrodes in a shielding environment of hydrogen. You can also call it arc-atom Welding. The arc renders energy so that a chemical reaction takes place.
An exceptional level of heat is released for an exothermic reaction, in a temperature near 3400-4000 degrees Celsius, the arc tears up the hydrogen molecules. Reaching up to maximum heat level without the arc is pretty impossible.
You may or may not use a filler rod during AHW welding. Arc is maintained entirely free of the work or parts being welded in this type.
6.Flux-Cored Arc Welding
Flux-Cored Arc Welding is semi-automatic or automatic like GMAW. It needs a continuously fed consumable tubular electrode that contains flux and a fixed voltage current supply.
An outer supplied shielding gas can be used, but most often, it counts on produce the essential privacy from the atmosphere for both gaseous and liquid protection. Since it has a high welding speed and portability, it’s widely used in construction-based work.
FCAW was first introduced in the 1950s as a substitution to SMAW (Shield Metal Arc Welding). The fundamental difference between FCAW and SMAW is that in FCAW, there is a use of stick electrodes, wherein SMAW this stick electrode is used unnecessarily.
7.Plasma Arc Welding is similar to gas tungsten arc welding (GTAW).
The electric arc is formed as an electrode (made of sintered tungsten). The vital distinction between GTAW and PAW is the position of the electrode within the body of the torch.
It can be distinguished from the shielding gas envelope.
Arc plasma is a temporary stat of gas that gets ionized after the transfer of electric current inside it, and it gains to stat of being a conductor of electricity.
8.Forge welding (FOW)
Forge welding is a solid-state welding method which helps to join two pieces of metal by giving heat to them at a high temperature and hammering these two metals together. Creating plastic deformation in a weld surface is another way of joining two pieces of metal by giving pressure.
This method is thought to be the easiest method since it has been used since the ancient periods. After the Industrial Revolution, the use of FOW has been reduced drastically.
Oxy-Fuel Welding is the procedure that uses fuel gases (or liquid fuels like gasoline) and oxygen to weld or cut metals. Authentic oxygen instead of water is used to ameliorate the flame temperature to allow the localized melting of the steel in a healthy environment.
An oxyhydrogen flame burns at 3073 K, and an oxygen flame burns at 3,773 K. In it, a welding torch is used for the easiness of welding metals.
10.Laser Beam Welding (LBW)
LBW is used to amalgamate two pieces of metal by using a laser that can create intense heat. This procedure is usually used in high volume products like automation i.e., in the automotive industry.
Laser beam welding has a high-power density that can create heat in any zone, and it has high heating and cooling rates. The depth of penetration depends on the heat that you are using in Welding.
11.Magnetic Pulse Welding (MPW)
MPW is a solid-state welding process that uses magnetic force to weld two metals together. It’s similar to the explosion welding. The main focus of the magnetic pulse welding is that it avoids the formation of brittle inter-metallic phase.
Hence, dissimilar metal can be welded in this procedure. It can produce a high magnetic field, which creates an eddy current in many of the work pieces.
12.Explosion Welding (EXW)
EXW is a process in which Welding is done by acceleration one of its components at severely high velocity. In this reliable welding method, the Welding is executed by stimulating one of the parts at remarkably high speed by using chemical explosives.
This method is commonly used for cladding carbon steel plate with a thin layer of corrosion-proof material like steel, nickel alloy, or zirconium. Because of the nature of this process, the producible geometries are minimal.
13.Resistance Spot Welding
Resistance Spot Welding is frequently used in factories to set produce of minimal welds. Two tiny and pin-pointed welding electrode transfer an electrical current between them. When the base metal is between the two electrodes, the Welding becomes molten and unites together.
In this process, two copper alloy electrodes are used for concentrating weld current and for forcing between work to be welded. This cost-effective joining technology continues to be very famous Welding in the automotive industry.
The resistance spot welding process is a pressure welding process. The sheets are usually pressed together by fitted copper electrode welding guns that have a current applied to them.
Upset Welding produces coalescence conveniently over the full area of abutting surfaces or progressively along the joint, through heat gotten from resistance to electric current by the area in where these surfaces are in touch.
You apply the pressure before starting the heat process, and you maintain throughout the healing session. The equipment used for this welding type is more similar to equipment used in flash welding.
It is chiefly used in the automobile industry and to weld sheet metal.
15.Friction Stir Welding (FSW)
FSW is a solid-state procedure which makes the use of non-consumable equipment to join the two work pieces without melting them. Heat is produced with the rotating equipment and the work piece material.
Fictional heat is generated between the work pieces and the wear-resistant tool. The mechanical amalgamation procedure and the adiabatic heat make the materials to soften without melting. FSW has been found to generate a low concentration of faults
Frequently Asked Question(FAQ)
1. What are deoxidizers in Welding?
Ans. Deoxidizers work as scavengers that combine with oxygen. The weld metal cool diffuses to the oxygen to the surface of the weld.
2. What are the gases used in MIG welding?
Ans. Shielding gases like Argon, helium Carbon Dioxide and Oxygen are the most commonly used in MIG welding.
3.Can I use TIG weld without gas?
Ans. Yes, but you have to make sure that the Argon you will be using is 100% authentic, and every piece of the process is clean.
4.What is the deoxidization of steel?
Ans. Deoxidization is the procedure of erasing an ample amount of oxygen from molten metal.
Having a full-proof idea of the basics of Welding is no more a rocket science now. This super-informative review is worthy enough to let you understand the A to Z of Welding.
So, without any fret, go through this review. We have tried our best to depict what are the different types of welding and which is the best. We strongly believe that this review will come more in use than any other ones available on the internet.
Let us know how it goes!