Welding machines for steel pipe

Different arc welding requires a corresponding arc welder and arc welder welding power source is the core part. SMAW machines: welding power, welding clamp Submerged arc welding machines: welding power supply, control box, trolley, wire feeder Gas welding and plasma welding machines: welding power supply, control box, wire feeder, welding torch, gas, water and so on. Welding arc is supplying power to a device. Arc welding must have the required electrical performance. Arc welding Arc welding is the most widely used welding methods. It includes: manual arc welding, submerged arc welding, MIG welding (argon, C02 gas, helium), melting polar gas tungsten arc (such as argon) arc welding, plasma welding (argon, nitrogen, helium gas, etc.). MMA Manual arc welding is mainly used for steel (carbon steel, alloy steel, stainless steel), manual arc welding equipment is simple, lightweight, flexible operation, can be applied to any short welds and welding position, the workpiece thickness above 1.5mm, small batch welding quality to some extent depends on the level of operation of the welder, labor-intensive, low productivity. SAW Submerged arc welding wire is continuously fed as electrical panels and filler metals. Welding, the welding area covered with a layer of granular flux, flux under the burning arc, the end of the wire and the workpiece material, partial melting of the formed weld. Flux melted slag bath surface covering to protect the weld metal, to prevent air pollution, and improve weld performance, prompting the weld slow cooling. MIG arc welding MIG arc welding commonly CO2 gas shielded arc welding, TIG welding can be a variety of locations, high production efficiency, can be welded carbon steel, alloy steel, stainless steel. Plasma arc welding Plasma arc welding is a non-melting arc welding, it is the use of compression between the electrode and the workpiece arc (transferred arc) to achieve welding. The electrode is typically used tungsten electrode, arc plasma is generated plasma gas can be argon, helium, and an inert gas ejection nozzle weld pool. Welding filler metal may or may not be filled with metal. ERW ERW suitable for mass production, sheet metal welding, welding equipment is expensive, spot welding, seam welding, resistance welding is a welding heat-to-energy method is to work at a certain plate pressure, and the use of current through the workpiece when resistance heat generated between the two workpieces to connect the contact surface melting of the welding method. Resistance welding methods: Spot, seam and projection welding and other types.