Article
The welding of high-strength steel ranges from laser arc welding to friction stir welding and then fully utilizes the resistance heat of the workpiece itself to weld, that is,Resistance spot welding machine butt welding machineWelding, only took 30 years. Resistance spot welding is a welding method in which the workpieces are stacked together and pressed between the upper and lower electrodes. The resistance heat generated when the instantaneous current passes through the workpiece is used to melt the base metal and form a solder joint after cooling.
Since the tensile strength of high-strength steel is 270~700MPa, it achieves high strength requirements through strengthening mechanisms such as precipitation strengthening, fine-grain strengthening, solid solution strengthening and phase change strengthening. It also has the advantages of high weight reduction potential, high collision energy absorption, high fatigue strength, high formability and low plane anisotropy. Mainly used in the automotive industry, including front pillars (A-pillars), center pillars (B-pillars), rear pillars (C-pillars), door sills, front and rear bumpers, and door anti-collision beams. However, due to special physical and chemical properties, its welding process performance is difficult to control. When spot welding, we must follow the following points to weld high-quality products. 1. Use AC pneumatic spot welding machine or DC inverter medium frequency spot welding machine for welding 2. The electrode is made of chromium zirconium copper material 3. The optimal parameters are welding current 10.14KA, welding time 17 cycles, slowly rising to 3 cycles, electrode pressure 2058N, pre-pressure time 1.8 seconds, cooling time 1.4 seconds. 4. The influence of welding current is huge
Wuxi Xinxing Welding Equipment Factory has been engaged in resistance welding machines for 29 years. Its core technical products include: semi-automatic butt welding machine, pneumatic-flash butt welding machine, multi-strand wire welding machine, foot pedal spot welding machine,Pneumatic spot welding machine, medium frequency spot welding machine, row welding machine mesh welding machine, resistance automatic welding machine, energy storage welding machine, copper rod aluminum rod disc circular welding machine, auto parts spot welding machine, sheet metal spot welding machine, home appliance hardware spot welding machine, small electrical appliance spot welding machine, copper row copper pipe welding machine, nut spot welding machine, stainless steel welding machine, foil strip spot welding machine, aluminum spot welding machine There are more than 300 types of welding machines, multi-head spot welding machines, bag cage spot welding machines, mesh welding machines, ton barrel frame welding production lines, resistance automatic welding machines, brazing machines, diffusion welding machines, projection welding machines, seam welding machines, wire and cable optical cable supporting equipment, etc. If you are interested in our welding equipment, please contact us.