Steel for cold pressing stamping

Abstract

The invention discloses the steel for cold pressing stamping. The steel for cold pressing stamping is characterized by comprising the following ingredients, by weight, 0.05% to 0.08% of C, 0.4% to 0.5% of Mn, 10% to 15% of Cr, 0.5% to 1.5% of Mo, 0.3% to 0.4% of V, 0.5% to 1% of Si, 0.6% to 0.9% of Ni, 0.01% of 0.03% of S, 0.05% to 0.09% of N, the balance Fe and impurities. The steel for cold pressing stamping has the advantages that compared with the prior art, according to the formula of the steel for cold pressing stamping, the content of C, the content of N, the content of Mn, the contentof S, the content of Si and the content of Ni are respectively controlled within a certain range, the stretch property of the material is guaranteed, and the forming property of finished products is improved; and furthermore, the phenomenon that because of the overhigh content of C and N, the content of impurities is overhigh, intercrystalline carbide precipitates, and the forming property and thecorrosion resistance of cold stamping are poor is avoided, and the toughness and the ductility can be improved because that the Cr, Mo and Vi are added.

Description

technical field [0001] The invention relates to a kind of steel used for cold stamping processing, which belongs to the technical field of iron and steel materials. Background technique [0002] Ordinary steel materials processed by cold stamping often have relatively poor formability; at the same time, due to the columnar grains produced during continuous casting, the microstructure clusters in the subsequent processing process cause ordinary steel to have the defect of being easy to wrinkle during cold rolling. The polishing performance after processing is also relatively poor. However, cold stamping has high requirements on the formability and polishability of stainless steel materials. It is difficult for ordinary stainless steel to meet the high requirements of cold stamping. Therefore, in order to make ordinary stainless steel meet the high requirements of cold stamping , It is extremely important to further improve its wrinkle resistance and elongation. Contents of...

AI Technical Summary

Problems solved by technology

[0002] Ordinary steel materials processed by cold stamping often have relatively poor formability; at the same time, due to the columnar grains produced during continuous casting, the microstructure clusters in the subsequent processing process cause ordinary steel to have the defect of being easy to wrinkle during cold rolling. The polishing performance after processing is also relatively poor