Rolling method for applying pulse current to metal composite plate

A metal composite plate and pulse current technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of small size of metal composite plate, difficult to meet user needs, large energy consumption, etc., to improve metal Plasticity, improving bonding strength and production efficiency, and reducing the effect of critical reduction rate

Inactive Publication Date: 2018-08-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The metal composite panels produced by the explosive cladding method are small in size, which is difficult to meet the needs of users. At the same time, this method consumes a lot of energy, pollutes the environment, and has a low yield

Method used

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  • Rolling method for applying pulse current to metal composite plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] Taking copper / aluminum bimetal composite as an example, the preparation method is as follows:

[0036] The material selection is an industrial pure copper plate with a size of 200mm×50mm×2mm and a pure aluminum plate with a size of 200mm×50mm×8mm. The pure copper plate and pure aluminum plate are ground and polished, and the surface of the plate is cleaned with acetone;

[0037] Rolling was carried out on a two-roll mill with equal roll speed and equal roll diameter (roll length 350mm, roll diameter 320mm, rolling speed 0.1m / s).

[0038] Turn on the pulse power supply 9, and the pulse peak current density is 150A / mm when applied to the sheet metal processing section 2 .

[0039] Start the rolling mill, make the upper and lower rolls of the rolling mill reversely rotate at a certain speed, and use the push plate to send the slab into the middle of the rotating upper roll 2 and the lower roll 7.

[0040] figure 1 Shown is a schematic diagram of a current loop implementat...

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Abstract

The invention belongs to the technical field of double-metal composite material rolling, and in particular, relates to a method for improving forming performances of a double-metal composite plate through adding pulse current in a rolling process. The method comprises main steps of treatment of coating layer metal and base layer metal before rolling, communication of the pulse current on a metal plate and rolling through startup of a rolling mill. The rolling method of the double-metal composite material is to apply the pulse current to double metal in the rolling process; and positive and negative output ends of a pulse power supply are connected with an electric brush to form a closed loop. The method has the following beneficial effects: the plasticity of the double-metal plate is improved; the rolling force is reduced; the edge cracking of the composite plate is inhibited; the element dispersion of the coating layer and base layer metal is promoted; the energy barrier is overcome;the metal atom dispersion efficiency is improved; the bonding strength is improved; and the rolling productivity is improved.

Description

technical field [0001] The invention belongs to the technical field of bimetallic composite material rolling, and in particular relates to a method for increasing the bonding strength of a metal composite plate by applying a pulse current to a metal plate during the rolling process. Background technique [0002] The metal composite panel is made of two or more different metal materials through pressurization, heating and other methods to make the bonding interface achieve metallurgical bonding. Bimetal composite panels have the excellent properties of each component metal, so they are widely used in theoretical research and experimental research. At present, the methods of producing metal clad plates have developed rapidly, such as: rolling clad method, explosive clad method, vapor deposition method, thermal spraying method, extrusion-roll clad method, etc. Among them, the most widely used one is roll clad method and explosive compound method. The size of metal clad panels...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B47/00
CPCB21B1/38B21B47/00B21B2001/386
Inventor 王涛李莎韩建超和东平任忠凯高翔宇
Owner TAIYUAN UNIV OF TECH
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