Rolling method of multi-layer stainless steel metal clad plate

A metal clad plate and stainless steel technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of difficulty in meeting the minimum vacuum degree, failure to realize production application, high production cost and equipment, and achieve The effect of low deformation resistance, stable quality and performance, and short production time

Active Publication Date: 2018-06-15
LANZHOU UNIVERSITY OF TECHNOLOGY
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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.

Method used

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  • Rolling method of multi-layer stainless steel metal clad plate
  • Rolling method of multi-layer stainless steel metal clad plate
  • Rolling method of multi-layer stainless steel metal clad plate

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Embodiment Construction

[0013] The present invention is a rolling method of a multi-layer stainless steel metal clad plate, which is formed by laminating and rolling multi-layer stainless steel plates, and realizes the effective combination of multi-layer metals, such as Figure 7 As shown, the steps are:

[0014] (1) Selection and cutting size of the plate: select the first martensitic stainless steel with a strength of 550~850MPa, annealed state and hardness of 180~270HV, and the annealed state as the middle layer of the composite plate; and on the upper and lower surfaces of the middle layer Stack austenitic stainless steel and second martensitic stainless steel in sequence;

[0015] (2 Surface treatment of the plate: remove the oxide with the nitric acid and hydrochloric acid aqueous solution with the preset ratio,

[0016] Then use a wire brush and sandpaper to polish the surface to completely remove the oxides on the surface of the plate, increase the friction of the surface, and finally clean...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B47/00B21B45/04
CPCB21B1/38B21B45/04B21B47/00B21B2001/386B32B15/011C22C38/40C22C38/44C22C38/48
Inventor 曹睿赵小康张晓波张海燕赵有春陈剑虹
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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