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Post-processing method for steel-back aluminium-base solid-liquid-phase composite plate

A composite plate, solid-liquid phase technology is applied in the field of post-processing of interface shear strength, which can solve the problems of high energy consumption and small increase in interface shear strength, and achieve the effect of simple method.

Inactive Publication Date: 2005-12-21
BEIJING JIAOTONG UNIV
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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 steel-backed aluminum-based solid-liquid phase composite plate diffusion annealing "large energy consumption and small increase in interfacial shear strength", and provide a method that can compensate for the aluminum-based cladding A post-treatment method to reduce the additional stress on the composite interface due to the shrinkage difference generated during the solidification and cooling process after solid-liquid phase composite with the steel back, and further improve the interface shear strength of the steel-backed aluminum-based solid-liquid phase composite plate

Method used

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Experimental program
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Embodiment Construction

[0010] At room temperature, on a precision rolling mill, rolling is carried out at a reduction rate of 1.5-3.5% for the steel-backed aluminum-based solid-liquid phase composite plate. The difference in the deformation of the aluminum-based cladding and the steel back produced by the rolling process is used to compensate for the difference in the shrinkage of the aluminum-based cladding and the steel back during the composite solidification and cooling process, thereby reducing the additional stress at the interface of the clad plate and improving the interface shear of the clad plate. cutting strength.

[0011] Specific application one

[0012] For the solid-liquid phase composite plate composed of 1.2mm thick 08Al steel plate and 1.0mm thick industrial pure aluminum cladding, at room temperature, on a precision rolling mill, carry out post-rolling treatment with a reduction rate of 3.5%, and the clad plate composite interface The shear strength increased from 70MPa before ro...

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Abstract

The invention discloses an after treatment of aluminum based steel-back solid-liquid phase complex board. Roll the complex board on the precise rolling mill at a draft of 1.5 to 3.5 percents. The contraction difference between the aluminum cover and the steel back in complex cooling and coagulating period, is compensated with the deformation difference between the aluminum covering layer and the steel back, further reducing the boundary extra stress so to improve the boundary shearing strength of the complex board in a simple and convenience way, resolving the problem that original after treatment of the aluminum based iron back solid-liquid phase complex board is of excessive power consumption and low boundary shearing strength enhancement.

Description

technical field [0001] The invention relates to a method for post-processing the interface shear strength of a steel-backed aluminum-based solid-liquid phase composite plate. Background technique [0002] The steel-backed aluminum-based solid-liquid phase composite plate is a composite plate composed of a solid steel plate and an aluminum-based alloy liquid, and is composed of a steel back and an aluminum-based cladding. Since the expansion coefficient of the aluminum-based cladding is significantly greater than that of the steel back, the shrinkage of the aluminum-based cladding is much greater than that of the steel back during the solidification and cooling process after the steel-backed aluminum-based solid-liquid phase recombination, but Since the strength of the aluminum-based cladding is much smaller than that of the steel back, the steel back strongly hinders the normal shrinkage of the aluminum-based cladding at the composite interface, thus generating considerable ...

Claims

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Application Information

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IPC IPC(8): C21D7/02
Inventor 张鹏杜云慧刘汉武
Owner BEIJING JIAOTONG UNIV
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