Rolling method of multi-layer stainless steel metal clad plate

Abstract

The rolling method of multi-layer stainless steel metal composite plate is to use thicker martensitic stainless steel as the middle layer, and then stack thinner austenitic stainless steel and martensitic stainless steel on both sides in order to form a hot-rolled composite ;The production process is as follows: Surface treatment of the plates before rolling, and then stacked in sequence, using argon arc welding to weld the stacked multi-layer metal around to ensure that the plates are not oxidized when heated, and the welded plates, Multi-pass rolling is performed by controlling the rolling temperature and rolling reduction. The rolled composite plate is air-cooled, and its structure and performance are analyzed. Based on the analysis results, a reasonable heat treatment process is selected, that is, a heat treatment system of complete annealing + quenching + tempering to further improve the performance of the metal composite plate.

Description

technical field [0001] The invention relates to the technical field of connection of dissimilar metal materials, and realizes the hot rolling compounding of multi-layer martensitic stainless steel and austenitic stainless steel. Background technique [0002] At present, the production of metal layered composite materials at home and abroad mainly adopts solid-solid phase composite method, liquid-solid phase composite method, liquid-liquid phase composite method, and the solid-solid phase composite method mainly includes explosive composite method, rolling composite method method, explosion + rolling composite method, diffusion welding method and extrusion composite method; liquid-solid composite method mainly includes pouring composite method, reverse solidification method and casting-rolling method; the most commonly used liquid-liquid composite method is electromagnetic continuous casting craft. Since 1956, the Americans took the lead in proposing the "three-step" cold-ro...

AI Technical Summary

Problems solved by technology

However, the vacuum rolling method is difficult to meet the minimum vacuum required for rolling (10 -5 ~10 -6 Pa) and non-oxidizing atmosphere design requirements, and the preparation process is cumbersome, the production cost and equipment are high, so it has not been able to achieve large-scale production application at present.

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