Preparation method of difficult/ easy-to-deform metal composite plate through pulse current auxiliary rolling

Abstract

The invention discloses a preparation method of a difficult / easy-to-deform metal composite plate through pulse current auxiliary rolling. The composite plate comprises a difficult-to-deform metal plate and an easy-to-deform metal plate; and after large-ripple pulse current auxiliary pre-rolling and small-ripple pulse current auxiliary pre-rolling are conducted on the difficult-to-deform metal plate and the easy-to-deform metal plate correspondingly, the assembly is put into a rolling mill provided with a pulse power source device to be subjected to flat roller rolling, and the composite plateis obtained. According to the preparation method of the difficult / easy-to-deform metal composite plate through pulse current auxiliary rolling, during rolling, by means of a point discharge effect and an electroplastic effect, the plasticity of the two metal plates is improved, the deformation resistance is reduced, the residual stress is eliminated through discharge in a tiny gap between the metal plates, and therefore metallurgical bonding is achieved. According to the preparation method, the rolling temperature is low, few interface brittle compounds is small, the microstructure is obviously improved, and the prepared material is good in plate shape, high in composite strength and good in interface bonding performance.

Description

technical field [0001] The invention relates to a preparation method of a metal composite plate, in particular to a preparation method of a pulse current assisted rolling difficult / easy-to-deform metal composite plate. Background technique [0002] Refractory metals have complex chemical composition and high content of alloying elements, and have the advantages of anti-oxidation, corrosion resistance and fatigue resistance, but they have high deformation resistance, poor plasticity and severe hardening during processing. Deformable metals have the advantages of light weight and easy processing, but their processing technology has poor rigidity and large amount of material removal. Difficult / easy-to-deform metal composite panels combine the advantages of both and have excellent comprehensive performance. They are widely used in aerospace, automotive, light industry and other fields. [0003] At present, the preparation methods of metal clad plates mainly include explosive cl...

AI Technical Summary

Problems solved by technology

Although the explosive composite method and the explosive-rolling composite method are widely used in metal combinations and their production methods are flexible, they have high technical requirements in specific processing and manufacturing, are difficult to precisely control, and are greatly affected by the external environment. Low production efficiency

Images