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公开(公告)号:US20230125540A1
公开(公告)日:2023-04-27
申请号:US18069992
申请日:2022-12-21
发明人: Yayuan HE , Jinqiao XU , Yang ZHANG , Pengwu ZHANG , Yue WANG , Yunyang YIN , Tangguo HU , Liwei LI , Haihe LUO , Bin LIU
IPC分类号: C22C38/14 , B21B37/16 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/00 , C21D8/02 , C21D9/46 , B21B37/74 , C21D3/02
摘要: A tempering-free wear-resistant hot rolled strip, includes components in percentage by weight: 0.08-0.22% of C, 0.1-0.55% of Si, 0.8-1.5% of Mn, less than or equal to 0.012% of P, less than or equal to 0.005% of S, 0.01-0.055% of Als, 0.005-0.019% of Ti, and less than or equal to 0.007% of N. A method for producing the same includes: desulfurizing molten iron, smelting desulfurized molten iron, and casting into a blank; heating the casting blank; performing rough rolling; performing finish rolling; performing rapid cooling; performing coiling; and performing conventional temper rolling. According to the present disclosure, on the premise that the tensile strength of a steel plate is greater than or equal to 1100 MPa and the elongation is greater than or equal to 12%, the steel plate has a surface Brinell hardness of 330-390 and a core hardness that is 95% or above of the surface hardness.