A high-surface-quality aluminum-clad strip that is easy to be stamped and processed and its production method

Abstract

The invention provides a high-surface-quality aluminum-coated plate strip with an easy stamping machining function and a production method thereof. The aluminum-coated plate strip is composited of analuminum strip and a steel strip; the steel strip comprises the chemical compositions of, by weight, no more than 0.01% of C, 0.006-0.015% of Si, 0.05-0.3% of Mn, no more than 0.015% of P, no more than 0.01% of S, no more than 0.005% of Al, no more than 0.005% of N, 0-0.05% of Ti, 0.01-0.08% of O, and the balance Fe and unavoidable impurities; and the following formulas are met, specifically, C+N<=0.012%, Mn / S>=8, and Ti / (3.42N+4C)>=1. The aluminum-coated plate strip has good steel and aluminum bonding properties and adapts to single pass large deformation, and stamping machining performance and the high surface quality are achieved; and the aluminum-coated plate strip meets 300 MPa or above of tensile strength, the elongation exceeds 30%, and the aluminum-coated plate strip can replace analuminum-plated plate to be used for production of automobile engine sound-insulation covers, home appliance panels, food processing trays and the like.

Description

technical field [0001] The invention belongs to the field of low-alloy steel manufacturing, and in particular relates to a high-surface-quality aluminum-clad strip that is easy to stamp and process and a production method thereof. The aluminum-clad strip not only has the strength of steel, but also has good steel-aluminum cladding performance and excellent With cold stamping and high surface quality, it can replace aluminum-plated sheets for the production of automobile engine sound insulation covers, home appliance panels, food heating trays, etc. Background technique [0002] With the development of technology and economy, the performance requirements of metal materials are getting higher and higher, and it is often difficult for a single composition of metal materials to meet the performance requirements of multiple aspects in the actual use process at the same time. Selecting two or more metal materials and using various processes to make composite panels can meet specia...

AI Technical Summary

Problems solved by technology

It can be seen from its patent specification that the steel base plate used in the aluminum-clad steel strip does not take measures to suppress the formation of Coriolis air mass, which easily leads to strain concentration and makes it difficult to press.

[0005] From the comparison results, the existing steel-aluminum clad strip has poor steel-aluminum bonding performance, or there are obvious crease defects on the surface, the surface quality is poor, the deformation is uneven, and the single-pass reduction rate is about 60%. , not suitable for single-pass large deformation, high surface quality and stamping processing requirements

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