Steel plate for producing automobile brake block and producing method

Abstract

This invention relates to an armor plate used in manufacturing car brake blocks and production method, in which, the chemical composition includes: C 0.24-0.30%, Mn 0.50-0.95%, S is less than or equal to 0.018%, P is less than or equal to 0.025%, Si: 0.17-0.35%, Als 0.010-0.030% and the rest is Fe. The armor plate is prepared by smelting, refining, conticasting, rolling cooling control of laminar flows and batching. This invention provides a formula for manufacturing steel of car brake blocks by optimizing components, strictly controls content of harmful elements S and P, adjusts contents of C, Mn, Si and dissolved Al by acid and controls technical parameters in the process so that the dynamic performance targets of the product meet the required standard.

Description

technical field [0001] The invention relates to a high-strength structural steel, in particular to a steel plate specially used for automobile brake pads and a manufacturing method thereof, and belongs to the technical field of structural steel. Background technique [0002] The steel plate used in the manufacture of automobile brake pads is a special-purpose steel plate. It requires the product to meet the specified standards in addition to the commonly used mechanical performance indicators such as tensile strength, yield strength, and elongation. There are additional and higher requirements for hardness to ensure the safety of the car during driving. At present, there is no uniform grade for this steel type. Automobile manufacturers choose different materials for manufacturing brake pads. Most manufacturers use low-alloy high-strength steel 16Mn, but because the content of C in 16Mn steel is low (≤0.20%) ), the content of harmful elements S and P is high (≤0.035%), so it...

AI Technical Summary

Problems solved by technology

At present, there is no uniform grade for this steel type. Automobile manufacturers choose different materials for manufacturing brake pads. Most manufacturers use low-alloy high-strength steel 16Mn, but because the content of C in 16Mn steel is low (≤0.20%) ), the content of harmful elements S and P is high (≤0.035%), so its wear resistance and surface hardness are not satisfactory, and cannot meet the needs of the rapid development of the automobile industry