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Arc metal welding is a process that needs no introduction in the welding world. Due to its versatility, it's widely used across almost all industries, from construction to manufacturing. However, not one type is suited to every application, and it takes careful consideration to choose the right one based on its unique strengths.
In this blog, let's explore the five most common types of arc metal welding and their applications.
1. Shielded Metal Arc Welding (SMAW)
It is the most common method of arc metal welding and is often referred to as stick welding. It involves manually coating a consumable electrode with a self-shielding flux. Here, the welder controls the arc length and movement of the deposition of molten metal onto the joint.
Applications of SMAW: It is commonly used in construction, maintenance, and repair industries as it is cost-effective. When considering consumables, it is most compatible with stainless steel, carbon steel, and other metals in various positions.
Gas Metal Arc Welding (GMAW)
This type is also known as MIG welding. It can be a semi-automatic or automatic process which uses continuous wire feed electrodes and an inert and semi-inter shielding gas to protect the weld pool from contamination. The molten wire forms an arc that joins the metal pieces together.
Applications of GMAW: Known for its speed and efficacy, it is perfect for automotive and thin metal fabrications. To get the best results, it is advised to use materials like stainless steel and carbon steel, especially if the aesthetics of the weld are crucial.
3. Gas Tungsten Arc Welding (GTAW)
This is also popularly called TIG welding. It's a precise welding process that uses a non-consumable tungsten electrode to get an arc and a different filler rod to insert material into the joint. Typically, it is used to create high-quality welds that require precision and clean metal surfaces.
Applications of GTAW: It is commonly used in aerospace and artistic metalwork due to its visually aesthetic outcome from precise control. When it comes to welding materials, it's best to use thin materials like aluminium, copper alloys, and stainless steel. Another notable quality of TIG welding is its high strength and durability.
4. Flux-Cored Arc Welding (FCAW)
This welding type is quite similar to MIG welding. However, it utilises a flux-filled tubular electrode instead of a solid wire. When burned, this flux generates shielding gases, making it ideal for outdoor welding where harsher elements can be a major issue.
Applications of FCAW: Unlike TIG welding, FCAW is suited to welding thicker materials and is used in industries that require heavy machinery repairs, such as construction and shipbuilding.
5. Submerged Arc Welding (SAW)
SAW is a highly efficient automatic welding process. Here, the arc is created with a continuously fed electrode and workpiece. The weld is submerged under a layer of flux, which acts as a shield from contaminants.
Applications of SAW: It is used to weld thick materials together, such as high-carbon steel or low-alloy steel. Industries like shipbuilding and pipe manufacturing benefit greatly from SAW's ability to produce deep and strong welds at a high speed.
Different types of arc metal welding provide differing advantages. Hence, it is best practice to choose one that suits your project's environmental conditions, materials, and weld quality specifications. To ensure you get the best result, it is highly advisable to seek a trusted welding electrode manufacturer to source the materials.
Ready to take the first step towards a successful welding application? Start by checking out industry-standard welding equipment at D&H Sécheron.
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