Method for preparing metal laminated composite material by rolling and compounding at approaching solidus curve temperature

A solidus temperature, rolling composite technology, applied in metal rolling, roll speed control and other directions, can solve the problems of unusable, element burning, high energy consumption, etc., to improve bonding strength, small rolling force, Low energy consumption

Inactive Publication Date: 2010-03-31
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires special equipment, cannot be used on the existing large-scale common rolling mill, and requires greater energy consumption and more serious element burning than that required by solid-solid rolling compounding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The thickness of the 7075 aluminum alloy plate is 5mm, and the thickness of the Mg-Gd-Y-Zr magnesium alloy plate is 10mm.

[0017] The liquid-solidus temperature of 7075 aluminum alloy is 477-635.0°C, and the solidus temperature of Mg-Gd-Y-Zr magnesium alloy is greater than 500°C.

[0018] Process as follows:

[0019] (1) Cleaning, degreasing the metal plate → pickling → alkali neutralization;

[0020] (2) Grinding, use a steel brush to scrub the metal plate surface for 2-3 minutes;

[0021] (3) Assembling, the aluminum alloy / magnesium alloy mode is assembled into a two-layer slab by riveting;

[0022] (4) heating, the above-mentioned slab is preheated to 450-500 ℃, and kept warm for 0.5-2h;

[0023] (5) Rolling and compounding, the slab is sent to a roll with internal water cooling for rolling, and the reduction is 20-70%.

Embodiment 2

[0025] The thickness of the 7075 aluminum alloy plate is 5mm, and the thickness of the Mg-Gd-Y-Zr magnesium alloy plate is 10mm.

[0026] The liquid-solidus temperature of 7075 aluminum alloy is 477-635.0°C, and the solidus temperature of Mg-Gd-Y-Zr magnesium alloy is greater than 500°C.

[0027] Process as follows:

[0028] (1) Cleaning, degreasing the metal plate → pickling → alkali neutralization;

[0029] (2) Grinding, use a steel brush to scrub the metal plate surface for 2-3 minutes;

[0030] (3) Assembling, adopting the riveting method to assemble the aluminum alloy / magnesium alloy / aluminum alloy into a three-layer slab;

[0031] (4) heating, the above-mentioned slab is preheated to 450-500 ℃, and kept warm for 0.5-2h;

[0032] (5) Rolling and compounding, the slab is sent to a roll with internal water cooling for rolling, and the reduction is 20-70%.

Embodiment 3

[0034] The thickness of the 7075 aluminum alloy plate is 5mm, and the thickness of the Mg-Gd-Y-Zr magnesium alloy plate is 10mm.

[0035] The liquid-solidus temperature of 7075 aluminum alloy is 477-635.0°C, and the solidus temperature of Mg-Gd-Y-Zr magnesium alloy is greater than 500°C.

[0036] Process as follows:

[0037] (1) Cleaning, degreasing the metal plate → pickling → alkali neutralization;

[0038] (2) Grinding, use a steel brush to scrub the metal plate surface for 2-3 minutes;

[0039] (3) Assembling, adopting the riveting method to assemble aluminum alloy / magnesium alloy / aluminum alloy / magnesium alloy / aluminum alloy into a five-layer slab;

[0040] (4) heating, the above-mentioned slab is preheated to 450-500 ℃, and kept warm for 0.5-2h;

[0041] (5) Rolling and compounding, the slab is sent to a roll with internal water cooling for rolling, and the reduction is 20-70%.

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Abstract

The invention discloses a method for preparing a metal laminated composite material by rolling and compounding at approaching solidus curve temperature. The preheating temperature approaches a soliduscurve of at least one metal plate in a plate blank by controlling the preheating temperature of the plate blank before rolling, and the plate surface at one side or the plate surfaces at both sides of the interface position of the metal plate generate a liquid phase by rolling deformation heat by controlling the rolling speed, thereby the surface of the metal plate is in a liquid state or a semi-solid state; the compounding barrier of surface oxidation films is damaged by the liquid phase under the action of compound rolling pressure, and the metallurgical bonding of the surfaces at both sides is realized. The invention is suitable for compounding materials which are difficult to control the liquid phase and difficult to adopt liquid-liquid or solid-liquid compounding and materials whichare difficult to deform in the solid state and difficult to adopt conventional solid-solid compounding; the first press can be greatly reduced, the needed rolling force is less, and the bonding strength can be improved without subsequent heat treatment; and the invention can be used for the prior common rolling machine used at a large scale without special equipment and has less required energy consumption.

Description

technical field [0001] The invention belongs to the technology of preparing metal laminated composite materials by rolling and compounding, in particular a method for preparing metal laminated composite materials by rolling and compounding at near solidus temperature. Background technique [0002] The laminated composite material is composed of two metal plates with different properties through a special processing and preparation method. Compared with a single metal component, the laminated composite material after rational design and combination combines the two metal components. Advantages, can obtain mechanical, physical and chemical properties that a single metal does not have. In recent decades, the development, production and application of laminated composite materials have attracted more and more attention, and have become new materials developed by countries all over the world. So far, this composite material has been applied in fields such as aerospace, petroleum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B37/46
Inventor 张新平王经涛杨婷慧徐希军罗秀芳李政
Owner NANJING UNIV OF SCI & TECH
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