Asynchronous cold rolling forming process of aluminum alloy and stainless steel clad plate

Abstract

The invention discloses an asynchronous cold rolling forming process of an aluminum alloy stainless steel clad plate, which comprises the following process steps: adopting an asynchronous rolling method to roll and clad the stainless steel plate and the aluminum alloy plate; after the asynchronous rolling, diffusion annealing the clad plate; In the S1 step, the opposite surface of the composite plate surface of the stainless steel plate is heated online, and the opposite surface of the composite plate surface of the aluminum alloy plate is cooled online, and the heating temperature is 350 ° C to 850 ° C; The temperature of the clad plate surface of the stainless steel plate of the clad plate is lower than 650°C, and the temperature of the clad plate surface of the aluminum alloy plate rolled out of the clad plate is lower than 300°C; the rolling reduction rate is 20% to 90%; the roll of the asynchronous cold rolling The speed ratio is 1.05-1.50; the thickness ratio of the aluminum alloy plate and the stainless steel plate is 1.5-4.0; in the S2 step, the annealing temperature is 250°C-500°C, and the annealing time is 15-120min. The invention creatively proposes a one-side online heating process for rolling a composite plate to improve the bond strength of the interface of the composite plate and realize rolling and compounding in a semi-molten state of the interface.

Description

technical field [0001] The invention relates to an asynchronous cold rolling forming process of an aluminum alloy stainless steel composite plate. Background technique [0002] Metal composite plate is a new type of composite material prepared by using composite technology to make two or more metal plates with different physical, chemical and mechanical properties realize firm metallurgical bonding at the interface. Compared with single-component metal materials, metal composite panels after reasonable design and combination combine the characteristics of each component metal, have excellent performance, and are low in price, green and environmentally friendly, and have developed rapidly in China in recent years. The manufacturing methods of metal clad plates include powder metallurgy, liquid-solid phase rolling, explosive cladding, hot rolling cladding, cold rolling cladding, etc. Among them, the processing temperature of the cold-rolling composite method is low, the compo...

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Problems solved by technology

But at present, there is only the asynchronous rolling composite production process of pure aluminum and stainless steel, but there is no composite plate production process of aluminum alloy and stainless steel. Because pure aluminum is soft, it can be easily composited with stainless steel, while aluminum alloy is hard, so it is difficult to composite with stainless steel. In the field of electronic products and military products, more and more raw materials of aluminum alloy and stainless steel composite plates are needed to process the required products. Although there are other composite methods, such as explosive compounding, etc., the efficiency is not high. How to realize the continuous production of aluminum alloy and stainless steel composite plates Large-scale production and high production efficiency are difficult problems to solve

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