A kind of stainless steel plate for lamination and its manufacturing method

Abstract

The invention discloses a stainless steel plate for lamination, the chemical composition of which contains in mass %: C: 0.16-0.35%, Si: less than 1.0%, Mn: less than 0.8%, Cr: 12.0-14.0%, Ni: Less than 0.30%, N: less than 0.12%, Mo: 0.5~1.0%, V: less than 0.15%, P: less than or equal to 0.030%, S: less than or equal to 0.005%, the rest is Fe and unavoidable impurity elements; among them, PREN =Cr+3.3×Mo+20×N, PREN≥16; Ms=539-430×(C+N)-30.4×Mn-12.1×Cr-17.7×Ni-7.5×Mo, 180≤Ms≤300. The hardness of the stainless steel plate for lamination of the present invention reaches above HRC46, the tensile strength reaches above 1400MPa, and the PREN value reaches above 16, and it has better toughness than conventional martensitic stainless steel; it has a relatively high PREN value, making the steel plate Has good rust resistance.

Description

technical field [0001] The invention relates to the technical field of stainless steel products and their preparation, in particular to a stainless steel plate for lamination and a manufacturing method thereof. Background technique [0002] The production process of many industrial products requires the use of laminated steel plates. For example, the production of printed circuit boards (PCB for short) is a process of heating and lamination. Then the key components between layers are laminated steel plates. These layers Pressed steel plates are used repeatedly during the production process until the plates are damaged. The forms of steel plate damage include wear, scratches, rust, and deformation. Therefore, laminated steel sheets are required to have high hardness in order to maintain wear resistance and reduce surface scratch damage; high strength is required so that deformation does not occur during pressure-bearing use; Reduces surface damage due to rust. [0003] The...

AI Technical Summary

Problems solved by technology

However, SUS630 contains 15% Cr, 4.5% Ni, 3.5% Cu, and 0.25% Nb, and the cost of the alloy is high and expensive; and it is difficult to control the shape of the SUS630 coil during the production process and during the manufacture of laminated steel plates. A little improper control will cause poor shape, and the most important thing is that once the shape is bad, it can no longer be improved by heat treatment or it is difficult to improve it by leveling

Expensive price and difficult production process control are the biggest problems for SUS630 to manufacture laminated steel plates, which have become the bottleneck of laminated steel plate production

Images