Copper-containing steel heating method and copper-containing steel produced by the same

Abstract

The present invention discloses one kind of copper-containing steel and its heat treatment process. The copper-containing steel may be used in producing plate and shaped section. Its heat treatment process includes the following two steps: 1. heating copper-containing steel blank at 1000-1050 deg.c; and 2. heating to 1250-1290 deg.c within 30-90 min. The copper-containing steel after being rolled has no crack.

Description

technical field [0001] The invention relates to a heating method for copper-containing steel and the copper-containing steel produced therefrom. Background technique [0002] At present, copper-containing steel includes Cu-P weathering steel, Cu-P-Cr-Ni weathering steel, etc. Copper-containing steel usually has good atmospheric corrosion resistance and is widely used in construction, vehicle and container industries. In metallurgical production, during the heating process of copper-containing steel, due to the result of selective oxidation (the iron in the oxidized steel is selected, and the copper is not oxidized), a thin layer of melting point lower than 1100 ° C will be enriched under the iron oxide skin of the steel. At the same time, it melts and erodes the grain boundaries of the steel surface, causing the copper-containing steel to crack during the hot working process. [0003] In order to avoid the cracking of copper-containing steel, the heating process that reduce...

AI Technical Summary

Problems solved by technology

Profile rolling mills that produce profile-type copper-containing steel often have a small load (compared to plate rolling mills). Rolling profiles at a maximum heating temperature of 1200°C, especially large profiles, is prone to motor tripping or roll breakage

[0006] Therefore, the heating process of the above example is difficult to meet the production of large copper-containing steel profiles.

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