A method for preparing high-performance composite strip by pulse current asynchronous rolling

Abstract

The invention relates to a method for preparing a high-performance composite strip through pulse current asymmetrical rolling. The method comprises the steps that surfaces, subjected to surface treatment, of a strip A and a strip B are stacked, wherein the surfaces subjected to surface treatment are opposite to each other; at a rolling inlet, pulse current is applied to an A / B composite strip, thelocal area of the material surface is subjected to discharging, and surface metal is melted; the A / B composite strip obtained after pulse current treatment is subjected to asymmetrical rolling, material interface seaming is conducted, the differential speed ratio range is adjusted, and uniform deformation of the strip A and the strip B is achieved; the step is repeated 2-3 times; the obtained A / Bcomposite strip is subjected to asymmetrical rolling till the total reduction rate of the strip reaches 85%-90%. According to the composite metal material prepared through the method, the interface bonding quality is greatly improved compared with the interface of the composite metal material prepared through a traditional rolling method, and the high-performance composite metal strip can be usedfor the fields of bulletproof protection, aerospace, sound insulation and noise reduction, automobile weight lightening and the like.

Description

technical field [0001] The invention belongs to the technical field of metal composite material rolling, and in particular relates to a method for preparing high-performance composite strip by pulse current asynchronous rolling. Background technique [0002] High-performance layered metal composites have been highly concerned by domestic and foreign counterparts in this field, and they have broad application prospects in the fields of bulletproof protection, aerospace, sound insulation and noise reduction, and automobile lightweight. The interface welding condition of layered composite materials during plastic deformation determines the mechanical and corrosion properties of the product. [0003] Traditional metal layered composite panels generally use the explosion method. However, the material interface quality is difficult to control. At the same time, this process is only suitable for the preparation of extra-thick composite panels. With the increase of people's requi...

AI Technical Summary

Problems solved by technology

Rolling cladding is a commonly used method. Generally, there are hot rolling cladding method and cold rolling cladding method. It is relatively difficult to control the interface bonding quality of metal clad plates prepared by these two methods. Such products can only meet the low-end market. The main reason is that the interface of these products is a combination of mechanical welding and metallurgical welding, and there is still a big difference between its strength and complete metallurgical bonding.

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