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Uniform post-processing method of steel-aluminium 28 lead semisolid composite board

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

Inactive Publication Date: 2011-04-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiency of the existing steel-aluminum 28-lead 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 28-lead 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0009] Embodiment 1: For the steel-aluminum 28-lead semi-solid clad plate, carry out the second-pass room temperature rolling post-treatment in which the pass reduction ratio of the first pass and the second pass is 6:1, and in the transverse direction of the clad plate The interfacial shear strength difference is 1.9MPa.

Embodiment approach 2

[0010] Embodiment 2: For the steel-aluminum 28-lead semi-solid clad plate, carry out the second-pass room-temperature rolling post-treatment in which the pass reduction ratio of the first pass and the second pass is 5:1, and in the transverse direction of the clad plate The interfacial shear strength difference is 1.7MPa.

Embodiment approach 3

[0011] Embodiment 3: For the steel-aluminum 28-lead semi-solid clad plate, carry out the second-pass room-temperature rolling post-treatment in which the pass reduction ratio of the first pass and the second pass is 4:1, and the clad plate in the transverse direction The interfacial shear strength difference is 1.5MPa.

[0012] Embodiment 4: For the steel-aluminum 28-lead semi-solid clad plate, carry out the second-pass room-temperature rolling post-treatment in which the pass reduction rate ratio of the first pass and the second pass is 3.5:1, and in the transverse direction of the clad plate The interfacial shear strength difference is 1.6MPa.

[0013] Embodiment 5, for the steel-aluminum 28-lead semi-solid clad plate, carry out the second-pass room-temperature rolling post-treatment in which the pass reduction ratio of the first pass and the second pass is 3:1, and the clad plate is horizontally The interfacial shear strength difference is 1.8MPa.

[0014] It can be seen ...

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PUM

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Abstract

The present invention discloses a uniform post-processing method of steel-aluminium 28 lead semisolid composite board, belonging to the researching field of interface shearing strength room temperature rolling post-process of steel-aluminium 28 lead semisolid composite board; the method of the present invention carries through twice pass rolling processes with a total down rate at 1.6% and a down rate proportion of a first pass and a second pass at 6:1-3:1 for the steel-aluminium 28 lead semisolid composite board composed of a 08A1 steel plate 1.2mm in thickness and an aluminium 28 lead covering layer 2.5mm in thickness under room temperature and on a precise rolling mill; the difference value of transverse interface shearing strength of composite board can be reduced within 1.9MPa.

Description

technical field [0001] The invention relates to a post-processing method of rolling at room temperature for the interface shear strength of a steel-aluminum-28-lead 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 inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D7/02
Inventor 张鹏杜云慧刘汉武
Owner BEIJING JIAOTONG UNIV