(1) electroslag welding, electroslag welding is a welding method of slag resistance heat energy. Welding process, welding position in the assembly formed by the end of two workpiece on both sides of the water-cooled copper slider gap in legislation. The use of current through the slag resistance heat welding the workpiece end of melting. The electrode geometry used in welding, electroslag welding is divided into filament electroslag welding plate electroslag welding and melting mouth electroslag welding. The advantages of the electroslag welding: welding the workpiece thickness (greater than from 30mm to 1000mm), the production rate. Is mainly used in the cross-section butt joints and Welding Electrode Supplier. Electroslag welding can be used for welding of various steel structures, can also be used for the welding of the casting. Electroslag welding head is slower due to heating and cooling, heat-affected zone width, coarse microstructure and toughness after welding generally require normalizing.
(2) high-frequency welding the same frequency welding is a solid resistance heat energy. Welding, use of resistance heat generated by high-frequency current in the workpiece when the workpiece welding surface heating to the melting or close to the plastic state, then apply (or not imposed) upset force to achieve the combination of the metal. Therefore, it is a solid-phase resistance welding method. The high-frequency welding high-frequency current to generate heat in the workpiece can be divided into contact with high-frequency welding and high frequency induction welding. Exposure to high-frequency welding, high-frequency current through the contact with the workpiece mechanical incoming workpiece. Induction of high frequency welding, high-frequency current through the workpiece external coupling of the induction coil and the workpiece induced current. High-frequency welding is a specialized strong welding method, according to the product is equipped with special equipment. Production rate, welding speed up to 30m/min. Mainly used for manufacturing pipe, longitudinal seam or spiral seam welding.
(3) gas welding, gas welding is a welding method using a gas flame heat source. The most widely used is acetylene gas as fuel, oxygen - acetylene flame. Simple equipment, easy to operate, but low speed and productivity of gas welding heat, heat affected zone, and easily lead to a larger deformation. Gas welding can be used for the Nickel Alloy Welding Electrodes of ferrous metals, nonferrous metals and alloys. Generally applicable to maintenance and a single piece of sheet metal welding.
(4) pressure welding pressure welding and gas welding, pressure welding gas flame as the heat source. Welding to the end of the two docking workpiece is heated to a certain temperature, and then exert enough pressure to get a solid joint. A solid phase welding. Pressure welding without filler metal, commonly used in rail welding and welded steel.
(5) explosion welding explosion welding is the chemical reaction heat energy in a solid phase welding method. But it is to use the energy generated by the detonation of an explosive to metal connection. The blast wave effect, the two metals are accelerated within less than a second to impact the formation of a combination of metal. In a variety of welding methods, the widest range of combinations of the explosion welding of dissimilar metals can be welded. Explosive Welding become incompatible with the two metal welding metallurgy on a variety of transition joints. Explosive welding is used for a large surface area of ??the tablet coating is an efficient method for the manufacture of composite panels.
(6) Friction Welding Friction welding is a welding mechanical energy is the energy of the solid phase. It is to use the heat produced by the mechanical friction between the two surfaces to metal connection. Friction welding heat concentrated in the joints at the narrow heat-affected zone. Between the two surfaces to exert pressure, in most cases is increasing pressure upon termination of the heating, the thermal state of the metal by upsetting combination, usually combined with the surface does not melt. Friction welding for higher productivity, in principle, almost all the forging of the metal can be friction welding. Friction welding can also be used for the welding of dissimilar metals. To apply to the round in cross-sectional maximum diameter of 100mm workpiece.