There are many types of welding machines, including single-point single-function, single-point dual-function, single-point multi-function (this type of welding machine also has only one welding head, after changing the form of the positioning plate, it can be used for any angle between 90° and 180°. angle welding). There are also two-point, three-point, four-point and even six-point welding machines and four-point welding machines. Different types of welding machines have different welding functions and work efficiencies.Vacuum Heat Treatment of 42CrMo Steel High Strength Bolts The welding machine is mainly divided into two types according to the material: plastic welding machine and metal welding machine. The applied technologies mainly include: ultrasonic, high frequency, plasma, electrothermal, rotary, etc.Deformation and Improvement of Slicing Knife Vacuum Quenching Among them, the plastic welding machine is used for welding polyethylene, polypropylene, polypropylene, nylon and other thermoplastic engineering plastic sheets or products. During operation, the plastic electrode is melted and sprayed out, and the workpiece to be welded is fused with it and bonded. It is widely used in welding and maintenance of plastic equipment, plastic floor laying, plastic pipe connection, plastic bottle sealing and other operations.Vacuum heat treatment process of steel bearing parts