Copper-containing steel heating method and copper-containing steel produced by the same
A heating method and technology for copper and steel, applied in heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve problems such as low load, roll breakage, motor tripping, etc., to shorten residence time, reduce erosion, and prevent cracking.
Inactive Publication Date: 2007-11-07
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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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, especia
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[0030] Table 2 shows 8 examples of heating copper-containing steel by the method of the present invention. Examples 1 to 4 are the heating methods shown in FIG. 1 ; Examples 5 to 8 are the heating methods shown in FIG. 2 . After the cast slabs heated in Examples 1 to 8 were rolled into "B" shaped steel and channel steel through a 950-800 I-800 II-850 tandem rolling mill, the surface of the shaped steel was inspected, and no cracks and cracking defects were found.
[0031] Example 1
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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...
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IPC IPC(8): C21D8/00C21D1/34C21D11/00C22C38/16C22C38/42C22C38/50C22C38/46C22C38/48
Inventor 刘明陶功明陈小龙邓通武
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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