Homogenizing post-treatment method of steel aluminum-20-tin semi-solid composite board

Abstract

The invention discloses a homogenizing post-treatment method of a steel aluminum-20-tin semi-solid composite board and belongs to the research field of the steel aluminum-20-tin 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-20-tin semi-solid composite board composed of 08Al steel plate of which the thickness is 1.2mm and an aluminum-20-tin coating layer of which the thickness is 2.5mm on a precision rolling mill at the room temperature under the conditions that the total reduction rate is 0.9% and the pass reduction rate ratio of the first pass to the second pass is (6.5:1)-(4:1). The shear strength difference of the transverse interface of the composite board can be reduced to less than 1.7 MPa.

Description

technical field [0001] The invention relates to a method for post-processing the interface shear strength of a steel-aluminum 20-tin 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 on the in...

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 20-tin 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 20-tin 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