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Uniform post processing method for steel and aluminum 7 graphite semi-solid composite plate

A semi-solid, composite plate technology, which is applied in the field of post-treatment of interface shear strength after room temperature rolling, can solve the problem of large difference in transverse interface shear strength, and achieve the effect of reducing the difference in shear strength

Inactive Publication Date: 2012-06-20
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing steel-aluminum-graphite semi-solid composite plate room temperature rolling post-processing method "large difference in transverse interface shear strength", and provide a method that can improve the strength of steel-aluminum-graphite semi-solid A post-processing method for the uniformity of the transverse interface shear strength distribution of the composite plate to further reduce the difference in the shear strength of the transverse interface of the composite plate

Method used

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Embodiment Construction

[0008] A uniform aftertreatment method for steel aluminum 7 graphite semi-solid composite plate, at room temperature, on a precision rolling mill, for steel aluminum 7 graphite semi The solid composite plate is subjected to a post-rolling treatment of two passes with a total reduction rate of 0.5%. The large difference in the lateral deformation of the aluminum-7-graphite coating produced by the post-rolling treatment with a large reduction rate in a single pass is decomposed and analyzed. Coordinating the small difference in the lateral deformation of the aluminum-7-graphite cladding produced by the post-processing of the two-pass small-reduction rate rolling, thereby further reducing the difference in shear strength at the transverse interface of the composite plate and improving the semi-solid composite of steel, aluminum, and graphite. Uniform distribution of shear strength at plate interface.

[0009] Embodiment 1, for the steel-aluminum-7-graphite semi-solid composite pl...

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Abstract

The invention discloses a uniform post processing method for a steel and aluminum 7 graphite semi-solid composite plate and belongs to the field of interface shear strength room-temperature rolling post processing research of steel and aluminum 7 graphite semi-solid composite plates. By the method, the steel and aluminum 7 graphite semi-solid composite plate consisting of a 08Al steel plate with the thickness of 1.2mm and an aluminum 7 graphite coating with the thickness of 2.5mm is rolled for two passes on a precise rolling mill at the room temperature, wherein the total down rate is 0.5 percent, a ratio of a first pass down rate to a second pass down rate is 1:3.5-1:1.5, and the lateral interface shear strength difference value of the composite plate can be reduced to be less than 1.9MPa.

Description

technical field [0001] The invention relates to a post-processing method of rolling at room temperature for the interfacial shear strength of a steel-aluminum-7-graphite semi-solid composite plate. Background technique [0002] Publication No.: CN101117696A, Invention Name: "A post-treatment method for steel-backed aluminum-based semi-solid composite board", expounds the room-temperature rolling post-treatment method for steel-backed aluminum-based semi-solid composite board, that is, at room temperature, In the precision rolling mill, the steel-backed aluminum-based semi-solid composite plate is processed after rolling, and the difference in deformation between the aluminum-based coating and the steel back produced by the rolling treatment is used to compensate for the difference between the aluminum-based coating and the steel back during the composite solidification and cooling process. The difference in the shrinkage of the steel back reduces the additional stress on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D7/02
Inventor 杜云慧张鹏刘汉武
Owner BEIJING JIAOTONG UNIV