Articles & Podcast Episodes

To create ground contact for painted arc welding, attach the grounding clamp to a clean metal surface close to your workspace. This promotes a stable arc. For wire feed welders, the wire can cut through paint to access metal. When using a metal welding table, connect the ground clamp to the table for effective grounding. … Read more

Dampness in arc welding harms weld quality. Moisture adds hydrogen, which causes porosity and raises the risk of hydrogen embrittlement. This can lead to weld cracking, especially with low hydrogen rods like 7018. Welders must keep rods and areas dry for strong and ductile welds. Welders must be aware of the environment in which they … Read more

In arc welding, both AC and DC sources are used. The arc striking voltage is 70-100 V for AC and 50-60 V for DC. For arc maintenance, a voltage of 20-40 V is needed. The current range varies from 50 to 1000 A, depending on the welding process and specific requirements. Essential settings for arc … Read more

Inert gas shielded arc welding, or MIG welding, uses a tungsten electrode and inert gas to protect the weld area. This process can join materials from 0.8 mm to over 10 mm thick. It is effective for welding thin sheets as well as thicker sheets in various applications, making it a versatile technique. One of … Read more

Plasma arc welding (PAW) is a precise welding technique that uses a plasma arc as its heat source. This method offers better control and efficiency compared to traditional tungsten inert gas (TIG) welding. In China, PAW machines are efficient and versatile, suitable for various metal thicknesses and numerous applications. China’s robust manufacturing capabilities further enhance … Read more

China laser arc welding machines provide high efficiency and precise results. Top manufacturers create versatile machines for applications like metal welding and intricate designs. These machines utilize advanced technology, ensuring portability and cost-effectiveness, which makes them suitable for various industries and in line with market trends. Portable handheld laser arc welding units are lightweight and … Read more

Arc welding robots are machines that automate the welding process with robotic arms. They handle payload capacities of 6 kg to 25 kg and have a reach of up to 3,100 mm. These robots enhance efficiency and speed. They integrate well with various welding techniques. Notable brands like Fanuc and ABB guarantee reliability in industry … Read more

In code arc welding, maintain air pressure between 80 and 100 psi. Pressures above 100 psi are allowed but do not improve molten metal removal. Use an air line with at least a ⅜ inch diameter. Ensure your air compressor has the necessary capacity for a clean cut. When working with Code Arc Welding, it … Read more

Code arc welding for boilers adheres to the ASME Boiler and Pressure Vessel Code, particularly Section IX. It sets standards for welding qualifications. Relevant standards include AWS A5.18 and API Std 1104. Coded welders must meet strict criteria to ensure weld integrity in pressure vessel applications, promoting safety and durability. Welders must be certified, adhering … Read more

Cold Metal Transfer (CMT) is a modified gas metal arc welding (GMAW) technique created by Fronius in 2004. CMT uses a short-circuit transfer process to lower heat input and reduce spatter. This results in better tensile performance and high-quality welds. CMT is ideal for various applications, including wire-arc additive manufacturing. CMAW finds applications in automotive, … Read more