Cold-rolled double-surface stainless steel composite plate having excellent comprehensive performances and manufacturing method

Abstract

The invention discloses a cold-rolled double-surface stainless steel composite plate having excellent comprehensive performances and a manufacturing method. The composite plate comprises a basal plate and a compound plate, wherein the upper and lower surfaces of the basal plate are wholly and continuously coated with the compound plate; the basal plate and the compound plate are formed to the cold-rolled double-surface stainless steel composite plate through an atomic diffusion metallurgical bonding method, wherein the basal plate is ultralow carbon aluminum killed steel; and the compound plate is 304 type austenitic stainless steel. The prepared cold-rolled double-surface stainless steel composite plate is excellent in surface quality and uniform in base material structure of carbon steel, has the room-temperature elongation above 45%, is excellent in corrosion resistance and stable in material performance, has the use performance of pure stainless steel, can largely reduce the cost, can serve as a substitute good of 304 stainless steel, and is widely applied to decoration panels and fields with higher forming requirements.

Description

technical field [0001] The invention relates to a stainless steel clad plate, in particular to a cold-rolled double-sided stainless steel clad plate with excellent comprehensive performance and a manufacturing method, in particular to an economical double-sided cold-rolled stainless steel clad plate with excellent comprehensive performance and a manufacturing method. Background technique [0002] Stainless steel clad steel plate is a kind of high-efficiency and energy-saving material of two metals, which uses carbon steel or stainless steel as the matrix, and is integrally and continuously coated with stainless steel on one or both sides. It gives full play to the advantages of the characteristics of the two materials. It not only has the corrosion resistance, wear resistance and decoration of stainless steel, but also has the good mechanical and forming properties of carbon steel. It is an extension of stainless steel. At the same time, it can save precious metals such as ...

AI Technical Summary

Problems solved by technology

The inventive method mainly adopts the composite method of solid-liquid combination, the interface bonding force is strong, and it is not easy to delaminate after forming and welding, but it is difficult to control the thickness uniformity of the clad layer of the cold-rolled stainless steel clad plate obtained by this method, and at the same time, due to the carbon steel The carbon content in the base material is high, and there is a lack of stabilizing elements. There will be an obvious decarburization layer on the side of the carbon steel at the interface junction. The structure of the carbon steel base material is uneven, and surface defects are prone to occur after flat

In addition, it is also difficult for the stainless steel clad sheet with Q195~Q235 plain carbon steel as the base material to meet the technical requirement of elongation of 45%.

[0009] In summary, there is currently no economical cold-rolled stainless steel composite coil that can meet the needs of the above users.

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