Hot-dip galvanized steel sheet for 304 stainless steel composite plate and manufacturing method thereof

Abstract

The invention discloses a hot-dip galvanized steel plate for a 304 stainless steel composite plate and a manufacturing method thereof, and mainly solves the technical problems that in the prior art, the stainless steel composite plate has an inward concave defect during bending machining, and the flatness of the stainless steel composite plate is low. According to the hot-dip galvanized steel plate for the 304 stainless steel composite plate provided by the invention, a base plate of the hot-dip galvanized steel plate comprises the following chemical components in percentage by weight: 0.06-0.08% of C, less than or equal to 0.06% of Si, 0.6-0.8% of Mn, 0.04-0.05% of P, less than or equal to 0.025% of S, 0.025-0.080% of Alt and the balance of Fe and inevitable impurity elements. The yield strength RP0.2 of the hot-dip galvanized steel sheet is 285-325MPa, the percentage elongation A80mm after fracture is 28-35%, and the 304 stainless steel composite plate made of the hot-dip galvanizedsteel sheet is mainly used for steel structural components of elevators and buildings.

Description

technical field [0001] The invention relates to a cold-rolled hot-dip galvanized steel sheet, in particular to a hot-dip galvanized steel sheet for a 304 stainless steel clad sheet and a manufacturing method thereof, belonging to the technical field of iron-based alloys. Background technique [0002] Due to its excellent corrosion resistance, paintability, processability and economy, hot-dip galvanized alloy-coated steel sheets are widely used in the fields of household appliances, construction, industrial instruments and automobiles. [0003] In order to meet the development needs of energy saving and emission reduction, researchers have developed stainless steel and hot-dip galvanized composite panels to replace pure stainless steel panels. Stainless steel and hot-dip galvanized composite panels can effectively reduce the production cost of enterprises. Especially in the elevator industry, the thickness of the hot-dip galvanized steel plate mainly used in the stainless ste...

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Problems solved by technology

[0015] The purpose of the present invention is to provide a hot-dip galvanized steel plate for 304 stainless steel clad plate and its manufacturing method, which mainly solves the technology of concave defects and low flatness of stainless steel clad plate in the prior art when the stainless steel clad plate is bent. Problem: The 304 stainless steel clad plate produced by hot-dip galvanized steel plate of the present invention meets the requirements of building structural parts for steel plate forming and processing

[0016] In order to solve the technical problem that is prone to concave, it is necessary to study and set the appropriate yield strength range of hot-dip galvanized products and the best steelmaking, hot rolling, cold rolling, and hot-dip galvanizing to meet the yield strength range under the premise of low cost. Production Process

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