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Post-treating method for steel-back aluminium-based semisolid-state clad plate

A semi-solid, clad plate technology, used in rolling mill control devices, metal rolling, manufacturing tools, etc., can solve the problems of high energy consumption and little improvement in interface shear strength, and achieve the effect of a simple method

Inactive Publication Date: 2009-09-02
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the post-treatment method of diffusion annealing of the steel-backed aluminum-based semi-solid composite plate "large energy consumption and little increase in interface shear strength", and provide a The difference in shrinkage produced by the steel back during the solidification and cooling process after semi-solid composite, thereby reducing the additional stress of the composite interface post-treatment method, further improving the interface shear strength of the steel-backed aluminum-based semi-solid composite plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0012] For the semi-solid composite plate composed of 1.2mm thick 08Al steel plate and 2.5mm thick industrial pure aluminum cladding, at room temperature, on a precision rolling mill, carry out post-rolling treatment with a reduction rate of 1.0%, and the composite interface shear of the composite plate The shear strength increased from 71MPa before rolling to 80MPa after rolling.

Embodiment approach 2

[0014] For the semi-solid composite plate composed of 1.2mm thick 08Al steel plate and 2.5mm thick Al-28Pb cladding, at room temperature, on a precision rolling mill, carry out post-rolling treatment with a reduction rate of 1.6%, and the composite interface shear of the composite plate The shear strength increased from 70MPa before rolling to 77MPa after rolling.

Embodiment approach 3

[0016] For the semi-solid composite plate composed of 1.2mm thick 08Al steel plate and 2.5mm thick Al-20Sn coating, at room temperature, on a precision rolling mill, carry out post-rolling treatment with a reduction rate of 0.9%, and the composite interface shear of the composite plate The shear strength increased from 70MPa before rolling to 76MPa after rolling.

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Abstract

The invention discloses a post-processing method for a steel-backed aluminum-based semi-solid composite plate, and relates to the field of post-processing research on the interface mechanical properties of a steel-backed aluminum-based semi-solid composite plate. Based on the semi-solid composite plate, the rolling reduction rate is 0.5-1.6%, and the difference in deformation between the aluminum-based cladding and the steel back produced by the rolling process is used to compensate for the shrinkage of the aluminum-based cladding and the steel back during the composite solidification and cooling process The additional stress on the interface of the composite plate can be reduced, and the shear strength of the interface of the composite plate can be improved simply and conveniently. The technical problem is that the improvement rate is not large".

Description

technical field [0001] The invention relates to a method for post-processing the interface shear strength of a steel-backed aluminum-based semi-solid composite plate. Background technique [0002] The steel-backed aluminum-based semi-solid composite panel is a composite panel composed of a solid steel plate and an aluminum-based semi-solid slurry, and is composed of a steel back and an aluminum-based cladding. Since the expansion coefficient of the aluminum-based cladding is greater than that of the steel back, the shrinkage of the aluminum-based cladding is greater than that of the steel back during the solidification and cooling process after the steel-backed aluminum-based semi-solid composite, but due to the The strength of the cladding is less than that of the steel back, so that at the composite interface, the steel back hinders the normal shrinkage of the aluminum-based cladding, thus generating additional stress at the composite interface. After compound forming, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/00C22F1/04B21B37/00B21B1/38
Inventor 张鹏杜云慧刘汉武张君姚莎莎
Owner BEIJING JIAOTONG UNIV