(A) Welding current seam welding to form a nugget of heat required to source the same spot, are the use of electrical current had been in the welding zone resistance heat generated. Other conditions of a given case, the welding current, determines the size of the nugget penetration rate and the amount of overlap. In the welding of low carbon steel, the nugget average welding through rate of steel plate thickness of 300o-70% to 45% -50% for the best. B When the welding current exceeds a certain value should be not less than 15% to 20% in order to obtain gas-tight weld nugget overlap, continue to increase the current can only increase the penetration rate and the amount of overlap of the nugget will not increase joint strength, which is not economical. If the current is too large, but also to produce the indentation too deep and weld burn defects. Seam weld nugget overlap a larger shunt, therefore, the welding current is usually 15 0o ^ r40% increase than spot welding. (B) the electrode pressure seam welding electrode force on nugget size and Welding Electrode Supplier. High electrode force makes indentation too deep, and it will accelerate the roll-plate deformation and loss. Pressure is insufficient prone to shrinkage, and due to contact resistance is too much easy to roll plate burning and shorten its life. (C) seam welding, the welding time and resting time, welding time control of nugget size to control the overlapping amount of cooling time. Lower welding speed, welding and off time ratio of 1 25 ^} 2:1, will be satisfied with the results. When the welding speed increases, the spot pitch increases, overlap weld, it is necessary to increase this proportion. To this end, at a high welding speed, welding and off time ratio should be 3:1 or higher. (D) welding speed and welding speed and welding metal, plate thickness and weld strength and quality requirements and so on. Usually in the welding of stainless steel, high temperature alloys and non-ferrous metals, in order to avoid splashing and dense weld must adopt a low welding speed. Sometimes a stepping seam weld nugget formation process in the case of roll plate stop. This Welding Materials the welding speed than the commonly used intermittent seam welding is much lower.
Uses: This is the argon arc welding auxiliary equipment, circular workpiece can be welded, straight seam artifacts (flat butt, cylinder straight seam steel coil strip butt, etc.), plane or space O-, L-shaped, V-shaped lip track weld. Complementary products: according to the welding requirements, supporting the torch swinging, TIG filler wire machine, water-cooled devices Main features: PLC or CNC control weld round \ linear interval spot interval segment Welding Rods, the Welding Wire China can be adjustable screen display