Advantages And Scope Of Application Of Metal Composite Panel

From the design point of view, the base layer of the Metal Composite Panel is mainly to ensure the strength, the clad layer is mainly to ensure its corrosion resistance, and the transition layer added in the middle is only for the needs of the welding process. In order to ensure that the composite steel plate does not lose its original comprehensive performance, it is necessary to weld the base layer and the cladding layer separately. In addition to the welding of the base layer and the cladding layer, there is also the problem of the welding of the transition layer, which is the main feature of the welding of stainless steel clad plates. Transition welds should be used between the cladding welds and the base layer welds, and at the junction of the cladding welds and the base metal.

The welding of the transition layer between the base layer and the cladding layer is the key to the welding of the stainless steel clad plate. The welding of the transition layer of the metal-clad plate is very important, and the selection of the welding material of the transition layer is also very important. The purpose of welding the transition layer is to compensate for the reduction of alloying elements (such as chromium, nickel, etc.) caused by dilution, and to maintain the alloy composition of the cladding weld at the proper level. When the transition layer is welded, the base layer

Localized melting of structural steel dilutes stainless steel weld metal components. At the same time, there is also the problem of burning loss of chromium and nickel alloy elements. In this way, the content of chromium and nickel alloy elements in the stainless steel weld will be reduced, and the carbon content of the stainless steel weld will be increased so that a hard and brittle martensitic structure will be easily formed in the stainless steel weld, and the plasticity, toughness, and ductility of the welded joint will be reduced. Corrosion resistance. therefore.

In actual welding production, in order to compensate for the loss of these alloying elements and keep the alloy properties of the transition layer at the proper level, welding materials containing high alloying elements such as Cr and Ni and low carbon content should be selected. Consider crack resistance and control the dilution rate of the weld. In this way, under normal welding parameters, a weld with a dual-phase structure can be obtained and a large amount of martensite can be avoided.

Tissue and weld cold cracks. In the welding of the transition layer of stainless steel clad plate, there are not only dilution and burning of alloy elements but also changes in structure and properties. Therefore, in order to ensure the safety of the transition area, it is more appropriate to use Austrian 307 and Austrian 312 electrodes.

For the coal coking industry, due to the long-term exposure of pipelines and equipment to high temperature and corrosive environments, the equipment will be severely corroded, and the service life of the equipment will be greatly reduced. Therefore, improving the corrosion resistance of the equipment, extending the service life of the equipment, and reducing the production cost of the enterprise are important means to improve the competitiveness of the enterprise. The metal-clad plate is a metal-clad material whose outer layer is pure stainless steel and the inner layer is carbon steel. This kind of metal clad material is composed of pure stainless steel and carbon steel is a stainless steel clad plate. Manufacturing, upgrading, and transformation provide a material guarantee.