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I. What is welding arc blow? Welding arc blow refers to the phenomenon that the arc deviates from the original axis direction of the electrode or electrode during the welding process, which will directly destroy the stability of the arc, affect the weld shape and welding quality, and even ca...Read more »
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Many welding problems that show up on the shop floor—poor bead appearance, porosity, cracking—are often traced back to one overlooked factor: how the consumables were stored before they ever reached the welder’s hand. For fabrication shops, construction sites, and manufacturing facilitie...Read more »
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One of the most frustrating moments for a beginner welder is striking an arc only to have the electrode stick to the workpiece. It sticks, glows red, and you scramble to twist it free. Don’t worry — every welder has been there. Understanding why it sticks and how to start the arc properly will s...Read more »
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When welding 6061 aluminum and its alloys with AC/DC TIG welding machines, ER4043 (Al-Si5) and ER5356 (Al-Mg5) are the two most commonly used filler wires. Although both wires look silver-white, they are fundamentally different in composition and performance. They have clear differences in allo...Read more »
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I Welding Arc Stability AC Welding: The stability of AC arc is relatively poor. The direction of the alternating current changes periodically, and the arc will extinguish and re-ignite when the current crosses zero. This causes the arc to easily flicker and be intermittent. Example When usi...Read more »
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According to the chemical composition of steel, it can be divided into two categories: carbon steel and alloy steel. Carbon steel is further divided into: ① low carbon steel, with a carbon content of less than 0.25%; ② medium carbon steel, with a carbon content of 0.25%~0.6%; ③ high carbon ste...Read more »
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Fillet welds are the most important form of welds in T-shaped joints, lap joints, and corner joints. They are widely used in steel structures, equipment racks, pipeline supports and hangers, and engineering machinery components. The quality of the weld depends on three key points: the weld toes...Read more »
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The primary function of welding shielding gases is to isolate the weld pool from the atmosphere, stabilize the arc, control penetration depth, and enhance overall weld quality. Conversely, selecting the wrong gas leads directly to defects such as porosity, cracking, embrittlement, and insuffici...Read more »
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Vertical welding with stick electrodes gives many welders trouble. The molten metal wants to drip downward, the puddle sags, and the bead ends up uneven. But vertical welding is not as hard as it seems once you understand two things: current control and manipulation rhythm. Let’s break it...Read more »
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Welding is the core processing technology in the fields of modern manufacturing, steel structures, pipes, sheet metal, auto repair, and special equipment. According to the physical nature of the welding process, it is mainly divided into three categories: fusion welding, pressure welding, and b...Read more »