Tariqul

The AWS A5.1 standard classifies carbon steel electrodes for shielded metal arc welding (SMAW). Common electrode types are E6012 and E6013, which allow for easy slag removal. Classification is based on their intended use, such as single-pass welds. Each type has unique melting characteristics important for effective welding. Choosing the right stick electrode depends on … Read more

Plasma arc welding uses high-current plasma to weld metals such as stainless steel and aluminum quickly. Its main applications include welding turbine blades, pipes, and electronic components. It is also effective for tool repairs, cladding, and profile cutting, making it valuable across various industries. There are various techniques within plasma arc welding, including keyhole welding. … Read more

Submerged arc welding defects include: – Porosity: Gas bubbles weaken the weld’s strength. – Cracking: Cracks can cause structural failure. – Slag Inclusion: Un-melted flux or impurities trapped in the weld affect quality. Addressing these defects is essential for ensuring reliable and strong welds. To troubleshoot these quality issues effectively, one must first identify the … Read more

Sub arc welding troubleshooting focuses on problems such as porosity, slag inclusions, incomplete fusion, and cracking. To resolve these issues, check moisture contamination, wire tension, and the flux feed system. Using the right welding materials and consumables helps maintain welding quality and prevents undercutting and other defects. Porosity appears as small holes in the weld … Read more

Short arc welding is a process that uses low heat input. It operates with welding parameters of 50–180 A and 15–23 V. When the filler material touches the workpiece, a short circuit forms. This heats the filler wire’s tip, transferring a droplet into the weld pool, which helps create strong joints. In comparison to Metal … Read more

Arc welding is a process that uses an electric arc as a heat source. It applies positive voltage to the electrode (welding rod) and negative voltage to the base material. The arc generates heat, melting both the electrode and the base material. This action creates a strong joint, making arc welding a popular choice for … Read more

Polarity in arc welding refers to the direction of electrical current in the circuit. It can be either positive or negative. Understanding polarity is critical because it influences weld quality and weld strength. Proper polarity settings lead to optimal welding results and stronger metal bonds. Understanding polarity in arc welding is essential for achieving desired … Read more

An electrode in arc welding is a coated metal wire made from materials similar to the base metal. It connects to the welding machine. When electricity flows through, it creates an electric arc. This arc generates intense heat, melting both the electrode and the base metal, allowing them to fuse together effectively in the welding … Read more

Heliarc welding, or TIG (Tungsten Inert Gas) welding, uses a non-consumable tungsten electrode to make strong, precise welds. It typically uses argon or helium as shielding gas. This process is ideal for joining magnesium, aluminum, and stainless steel, providing excellent control and high-quality results in metal joining. The key technique in Heli Arc welding involves … Read more

Argon arc welding, or TIG (Tungsten Inert Gas) welding, is a process that uses a tungsten electrode to form an electric arc. This process joins metal parts at high temperatures. Argon gas protects the weld area, resulting in a strong and clean joint. This technique is ideal for high-quality welding projects. The primary benefit of … Read more