Articles & Podcast Episodes

The green color in arc welding usually shows tungsten contamination. This can happen from the filler or base metal. Using proper cleaning techniques, like a dedicated saw for aluminum, reduces impurities. Recognizing this contamination is essential for ensuring the quality of the weld. This green glow occurs due to the presence of copper in some … Read more

The humming sound during arc welding comes from the transformer. The sound is due to the iron core’s expansion and contraction. High current AC flows through the coils, producing a low-frequency hum at around 50 Hz. This hum signals that the transformer is operating correctly during the welding process. To mitigate humming sounds in arc … Read more

Shielded Metal Arc Welding (SMAW) is limited to low welding currents to ensure arc stability and avoid overheating. Excessive currents can damage the electrode coating, leading to weld defects such as porosity. While SMAW is versatile, it has slower productivity and is less effective in all weld positions compared to alternative methods. Despite these challenges, … Read more

Arc welding is important because it offers strength and versatility in many applications. It is essential in construction, pipeline welding, and heavy equipment repairs. Arc welding creates durable joints and enhances structural integrity. Its efficiency makes it suitable for both small and large projects, benefiting various industries. Key benefits of arc welding include high speed, … Read more

Arc strikes happen in arc welding when an electrical arc unintentionally discharges outside the weld zone. These marks can create problems, such as structural weakness and visual defects. Recognizing their causes is essential to prevent them during the welding process, ensuring better results and safety. The effects of arc strikes stretch beyond immediate aesthetic concerns. … Read more

Nikolai Benardos, a Russian inventor, and Stanisław Olszewski, a Polish inventor, discovered electric arc welding. They developed the carbon arc welding method between 1881 and 1882. This innovative technique uses carbon electrodes to join metal pieces together, marking a significant advancement in welding technology. During the early 20th century, electric arc welding gained traction in … Read more

C.L. Coffin was granted the first U.S. patent for metal arc welding in 1890, using a metal electrode. In 1802, Vasily Petrov created a stable electric arc, essential for melting metals. Nikolai Benardos advanced carbon arc welding, establishing key principles for modern welding techniques. In the early 20th century, engineers further innovated. In 1907, Oscar … Read more

In 1881, Russian inventor Nikolai Benardos and Polish inventor Stanisław Olszewski created electric arc welding. They developed a method called carbon arc welding. This technique used carbon electrodes to create an electric arc, allowing for effective metal joining. Their invention is significant as it established the basis for modern welding practices. The process evolved throughout … Read more

Nikolai Slavyanov, a Russian scientist, invented metal arc welding in 1888. He introduced consumable metal electrodes. The principles of arc welding began with Sir Humphry Davy in 1800. Other important contributors are Edmund Davy and Vasily Petrov. Their work laid the foundation for modern welding technologies. By the 1890s, advancements continued when American engineer Thomas … Read more

Plasma Arc Welding (PAW) was invented by Robert M. Gage in 1953 at the Linde/Union Carbide laboratory in Buffalo, NY. He developed the technique and secured multiple patents. PAW technology was introduced to the market in 1964 after nearly ten years of work and innovation. The historical impact of plasma arc welding is significant. By … Read more