ARC Welding

Arc welding was discovered in 1881 by Nikolai Benardos. He showcased this technique using a carbon electrode at the International Exposition of Electricity in Paris. In 1887, he and Stanisław Olszewski patented this method, marking a major advancement in welding technology. Over the years, arc welding has evolved significantly. The introduction of various electrodes and … Read more

Arc welding began in the late 19th century. It became important during the Second World War, especially in shipbuilding. Today, it is essential for making steel structures and vehicles. Its historical significance and current relevance highlight arc welding’s impact across various industries. The technique evolved significantly in the early 20th century with the invention of … Read more

Watching the welding arc without eye protection can cause “arc eye” or “welder’s eye.” This painful condition results from ultraviolet radiation damaging the cornea. It can lead to photokeratitis, acute burns, and visual damage. Without proper care, it may even cause permanent blindness. Always use eye safety gear when welding. More severely, retinal burns may … Read more

Spatter in arc welding happens mainly due to wrong amperage and voltage settings. When the voltage is low or the amperage is high for a specific wire and gas combination, the arc cools down. This cool arc does not heat the wire and molten pool effectively, leading to a stubbing effect and causing spatter. Improper … Read more

Contaminants such as dirt, oil, grease, and rust on the workpiece introduce gases into the weld pool. When these pollutants burn, they release trapped gases, leading to porosity. To prevent this defect in shielded metal arc welding, always clean the workpiece thoroughly before starting the process. Detection of porosity can be done through visual examinations … Read more

Plasma arc welding uses a specialized torch to generate a focused beam. This beam efficiently welds thin metals and creates deep, narrow welds. It is especially effective on challenging materials like stainless steel and aluminum. Plasma arc welding is often preferred over traditional methods for its precision and versatility. The benefits of Plasma Arc Welding … Read more

A VAL program for arc welding is a user-friendly, real-time programming language used with Unimation PUMA robots. It controls welding tasks, computes trajectories, and handles methods for Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW). VAL enhances the efficiency of robotic welding systems. Furthermore, the VAL Program simplifies the training process for … Read more

The verification procedure for arc welding equipment ensures compliance with BS7570 and IEC 60974-14 standards. It involves validation and calibration to confirm accuracy. Guidelines include validation labels and recertification criteria, which help maintain equipment performance and improve quality using tools like the TWI Validation tool. The Essential PDF Guide for Inspection and Calibration offers a … Read more

The four main types of arc welding are: Gas Metal Arc Welding (GMAW), which offers fast work; Gas Tungsten Arc Welding (GTAW), known for its precision; Shielded Metal Arc Welding (SMAW), valued for its versatility; and Flux-Cored Arc Welding (FCAW), effective for welding thick materials. The benefits of arc welding processes are numerous. They offer … Read more

Underwater arc welder salaries depend on experience and location. Top earners make about $58,000 annually. The average salary is $46,613. The 75th percentile earns $51,500, while the 25th percentile makes $40,000. Monthly pay ranges from $3,333 to $4,833. Industry demand will boost the underwater welding job market. Geographical differences play a significant role in pay … Read more