Processing technology of stainless steel composite plate

Analysis of the processing technology of stainless steel clad plate At present, the main production methods of stainless steel clad plate at home and abroad include solid-liquid phase bonding method and solid-phase bonding method. The solid-phase bonding method mentioned is explosive welding and explosive welding billet rolling. . Because the explosive welding interface presents a waveform, which is not the same as the interface presented by the direct rolling compound, so whether it has such a waveform interface becomes an important sign of good or good welding. The industry has concluded through long-term observation and testing that there are three main interface bonding forms of explosive composites: direct bonding between metals; wavy bonding at the interface; uniform and continuous melting layer between metals. In the whole production process of stainless steel clad plate, heat treatment becomes a very critical part. The strength and hardness of the clad steel plate after explosion welding increase, and the plasticity decreases, which is not conducive to the subsequent processing and use. The main purpose of the heat treatment process is to eliminate the internal stress after the explosion composite and improve the plasticity of the stainless steel composite plate. Since the solution treatment system of general stainless steel is very different from that of carbon steel, the temperature of heat treatment, the time of heat preservation and the choice of cooling system have become extremely important factors.

The common welding process of stainless steel clad plate has now appeared a large pressure storage tank made of stainless steel clad plate. The electric welding includes the electric welding of the bottom layer, the electric welding of the multi-layer, and the electric welding of the composite layer, and the electric welding of the multi-layer during the period belongs to different electric welding. The bottom layer is a common stainless steel plate of high-pressure vessels, which has outstanding weld ability and usually has no difficulty factor, and can meet the mechanical cost-effectiveness standard of composite steel for hardness, rigidity, and characteristics; the composite layer is ferritic stainless steel, which has good wear resistance. The selection of suitable welding materials and welding techniques can prevent thermal cracks and meet the standard of corrosion resistance of cladding during operation.