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4 Different Types of Welding Processes
The welding process is an important one in the manufacturing industry. It’s a method used to join two or more pieces of metal together by using heat and pressure. The pressure is applied with an electrode, which is then connected to a power source. Welding is used in a variety of industries, including construction, automotive, aerospace, and more. It’s a versatile process that can be used to create everything from small parts to large structures. There are four different types of welding processes: gas welding, arc welding, resistance welding, and laser welding. Each type has its advantages and disadvantages, which will be discussed in this blog post.
Gas Metal Arc Welding (GMAW/MIG)
Gas metal arc welding, also known as GMAW or MIG, is a type of welding that uses an electric arc to weld metals together. The metal to be welded is melted by the heat of the arc, and the gas shielding around the arc protects the weld pool from oxygen and other contaminants.
GMAW is a popular welding method because it is relatively easy to learn and can be used to weld a variety of metals, including aluminium, stainless steel, and mild steel. It is frequently used in auto body repair, fabrication, and industrial applications.
Gas Tungsten Arc Welding (GTAW/TIG)
Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an Arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by a shielding gas (usually an inert gas such as argon).
A constant-current welding power supply produces electrical energy, which is conducted across the arc through a column of highly ionized gas and metal vapours known as plasma.
The heat produced by the electric arc melts the base metal and the filler metal, if used, causing them to intermix. As the metals cool, they form a joint with properties similar to those of the base metal. GTAW can be used on nearly all weldable metals except aluminium, magnesium, and their alloys.
Shielded Metal Arc Welding (SMAW)
SMAW, or shielded metal arc welding, is one of the most commonly used welding processes. It involves using an electrode to create an arc between the metal and the electrode, which then melts the metal and fuses it.
SMAW is a relatively simple welding process that can be used on a variety of metals, including carbon steel, stainless steel, and aluminium. It is also a versatile welding process that can be used in a variety of applications, such as fabrication, repair, and maintenance.
The main advantage of SMAW is that it is a relatively low-cost welding process. In addition, SMAW is a relatively safe welding process when proper safety precautions are taken.
However, there are some disadvantages to SMAW. One disadvantage is that it can be a slow welding process. Another disadvantage is that it can be difficult to produce high-quality welds with SMAW.
Flux Cored Arc Welding (FCAW)
Flux-cored arc welding (FCAW) is a type of welding that uses a wire electrode that is fed through a welding gun and into the weld pool. The heat of the arc melts the wire, which joins with the base metal to create a strong bond.
FCAW is often used for welding thicker materials, as it can penetrate deeper into the metal than other types of welding. It can also be used in all positions, which makes it versatile for many applications. However, FCAW does have some disadvantages, such as a higher risk of fumes and spatter.
