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Homogenizing post-treatment method of steel aluminum-9-boron nitride semi-solid composite board

A boron nitride, semi-solid technology, applied in the field 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 shear strength

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

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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-9-boron-nitride semi-solid clad plate room temperature rolling post-treatment method "large difference in transverse interface shear strength" and provide a method that can improve the strength of steel-aluminum-9-boron nitride A post-processing method for the uniformity of the transverse interface shear strength distribution of the boron semi-solid composite plate, further reducing the difference in the transverse interface shear strength of the composite plate

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0009] Embodiment 1, for the steel aluminum 9 boron nitride semi-solid composite plate, carry out the post-treatment of the second pass room temperature rolling with the pass reduction ratio of the first pass and the second pass being 1:3.5, and the composite plate The interfacial shear strength difference in the transverse direction is 1.8MPa.

Embodiment approach 2

[0010] Embodiment 2, for the steel aluminum 9 boron nitride semi-solid composite 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 1:3, and the composite plate The interfacial shear strength difference in the transverse direction is 1.7MPa.

[0011] Embodiment 3, for the steel aluminum 9 boron nitride semi-solid composite plate, carry out the second-pass room temperature rolling post-treatment with the pass reduction ratio of the first pass and the second pass being 1:2.5, and the composite plate The interfacial shear strength difference in the transverse direction is 1.6MPa.

[0012] Embodiment 4: For the steel aluminum 9 boron nitride semi-solid composite 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 1:2, and the composite plate The interfacial shear strength difference in the ...

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Abstract

The invention discloses a homogenizing post-treatment method of a steel aluminum-9-boron nitride semi-solid composite board and belongs to the research field of the steel aluminum-9-boron nitride semi-solid composite board interfacial shear strength room temperature rolling post-treatment. The method is as follows: two-pass rolling treatment is performed on a steel aluminum-9-boron nitride semi-solid composite board composed of a 08Al steel plate of which the thickness is 1.2mm and an aluminum-9-boron nitride coating layer is 3.0mm on a precision rolling mill at the room temperature under the conditions that total reduction rate is 0.6% and the pass reduction rate ratio of the first pass to the second pass is (1:3.5)-(1:1). The shear strength difference of the transverse interface of the composite board can be reduced to less than 1.8Mpa.

Description

technical field [0001] The invention relates to a method for post-processing the interface shear strength of a steel-aluminum-9-boron-nitride semi-solid composite plate after rolling at room temperature. 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 ...

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