Advantages and disadvantages of resistance welding
Electric resistance welding method is a combination of the workpiece to exert pressure through the electrode, the use of current through the resistor thermal contact surfaces and adjacent areas generated by joint welding. Advantage of Electric resistance welding 1, nugget, always surrounded by a plastic ring, molten metal and air separation, metallurgy process is simple. 2, the heating time is short, heat concentration, it is a small heat-affected zone, deformation and stress is also small, usually do not have to arrange correction after welding and heat treatment processes. 3, no wires, rods and other filler metals, as well as oxygen, acetylene, hydrogen, such as welding materials, welding low cost. 4, simple operation, easy to implement mechanization and automation, improved working conditions. 5, high productivity, and no noise and harmful gases, in mass production, and other manufacturing processes can be edited together to the assembly line. But due to fl...