CORROSION-RESISTANT ALLOY STEEL BAR AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2023/246096

A1

Provided in the present application are a corrosion-resistant alloy steel bar and a preparation method therefor, wherein the corrosion-resistant alloy steel bar comprises, in percentage by weight: 0.05-0.25% of C, 1.05-2% of Si, 0.3-1.5% of Mn, 0.5-2.5% of Cr, 0.05-1% of Ni, 0.001-0.005% of O, 0.001-0.0035% of S, 0.005-0.1% of Ti, 0.005-0.1% of Al, 0.005-0.03% of V, and 0.005-0.03% of Nb, with the balance being Fe and inevitable impurities. The preparation method therefor comprises the successive steps of smelting, refining, continuous casting, rolling and cooling. In the present application, elements such as Si, Ti, Al and Mn are used for compensating for the reduction in corrosion resistance caused by a decrease in the content of Cr, such that the production cost of the corrosion-resistant alloy steel bar are greatly reduced.

CHEN HUANDE (CN)
MA HAN (CN)
JIANG JINYANG (CN)
WANG FENGJUAN (CN)
ZHANG YU (CN)
BAI HONGGUO (CN)
YANG XIAOWEI (CN)
ZHANG HAI (CN)
CHEN ZHAOYI (CN)

PCT/CN2023/072767

December 28, 2023

January 18, 2023

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INSTITUTE OF RES OF IRON AND STEEL JIANGSU PROVINCE/SHA STEEL CO LTD CN (CN)
ZHANGJIAGANG HONGCHANG STEEL PLATE CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)

C22C38/02; C21D8/08; C22C33/06; C22C38/04; C22C38/06; C22C38/46; C22C38/48; C22C38/50

CN114790532A	2022-07-26
CN108368575A	2018-08-03
CA1195152A	1985-10-15
US20150240324A1	2015-08-27
JP2017141502A	2017-08-17
US20130266821A1	2013-10-10

SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)

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