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Resistance welding machineButt welding machineThe welding process is completed in 2 seconds. Xinxing editor often thinks that it is an extremely simple thing, but it contains 4 main stages. 1. Preloading 2. Welding time 3. Maintenance time 4. Rest time
1) During spot welding and projection welding, current welding must be performed after the electrode pressure reaches full value and is stable. Otherwise, the pressure may be too low and the contact resistance may be too large, causing strong splashing, or the pressure may be inconsistent, affecting heating and causing fluctuations in solder joint strength. 2) The electrode must be lifted only after the current is completely cut off, otherwise sparks will be caused between the electrode and the workpiece, or even the workpiece may be burned through.
To improve joint performance, one or more of the following are sometimes added to the base cycle: 1) Increase the pre-pressure to eliminate the gaps between thick weldments; 2) Use preheating pulses to improve the plasticity of the metal, so that the welding parts are closely adhered to each other, otherwise there will be spatter; during projection welding, this can make multiple bumps in balanced contact with the electrode before power is applied to ensure the consistency of heating at each point. 3) Increase the forging pressure to make the nugget dense and prevent cracks and shrinkage cavities. 4) Use tempering or slow cooling pulse to eliminate the quenching structure of alloy steel and improve the mechanical properties of the joint.
Wuxi Xinxing Welding Equipment Factory has been engaged in resistance welding 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, automatic resistance welding machine, energy storage welding machine, copper rod and aluminum rod rounding 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 bar copper pipe welding machine, nut spot welding machine, stainless steel welding machine, foil belt spot welding machine, aluminum spot welding machine, multi-head spot welding machine, bag cage spot welding machine, mesh row welding machine, ton barrel rack welding production line, resistance automatic welding machine,brazing machine, diffusion welding machines, projection welding machines, seam welding machines, wire and cable optical cable supporting equipment, etc., reaching more than 300 types. If you are interested in our welding equipment, please contact us.