A kind of chromium-vanadium-containing atmospheric corrosion-resistant molten steel and atmospheric corrosion-resistant steel and production method thereof

A technology of atmospheric corrosion resistance and section steel, which is applied in the field of atmospheric corrosion resistance section steel, can solve the problems such as the lack of strength index of section steel, achieve the effect of improving quality, increasing the qualified rate of billet, and avoiding the effect of central shrinkage cavity
CN107587067BActive Publication Date: 2019-05-03PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Publication Date
2019-05-03

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Abstract

Relating to the steelmaking field, the invention especially provides an atmospheric corrosion resistant molten steel. Based on a total weight, the molten steel contains: 0.01%-0.09% of C, 0.15%-0.35%of Si, 0.30%-0.60% of Mn, 0.30%-0.40% of Cu, 0.20%-0.30% of Ni, 2.0%-3.5% of Cr, 0.06%-0.12% of V, 0.01%-0.015% of Nb, 0.004%-0.008% of N, and not more than 0.030% of P and not more than 0.020% of S.The invention provides an atmospheric corrosion resistant steel and a production method thereof. Continuous casting of the molten steel provided by the invention can improve the central quality of a casting blank, avoids central crack and central shrinkage cavity, thereby improving the quality of the high strength and high atmospheric corrosion resistant steel casting blank and greatly enhancing the casting blank qualification rate. Also, the finally obtained atmospheric corrosion resistant steel has good atmospheric corrosion resistant ability and higher strength performance.
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Description

technical field

[0001] The invention relates to an atmospheric corrosion-resistant steel molten steel, an atmospheric corrosion-resistant steel obtained by continuous casting and rolling using the molten steel of the invention, a production method of the atmospheric corrosion-resistant steel and the atmospheric corrosion-resistant steel obtained by the method. Background technique

[0002] Atmospheric corrosion-resistant steel is a very important class of steel. Its atmospheric corrosion resistance is 2-8 times that of ordinary steel, and its paintability is improved by 1.5-10 times. Due to the effectiveness of atmospheric corrosion resistance steel compared with ordinary steel, and its good economic efficiency compared with stainless steel, it has been developed rapidly in various countries in the world. Various steel structures used in the open air, railway vehicles and bridges are is the scope of its application.

[0003] The early atmospheric corrosion-resistant steel v...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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