????? ????? ? Wuhan Iron and Steel Co., Ltd ?? Panzhihua Iron and Steel Co., Ltd., ???? ??? ??? ????-??? ??? ???? ??. ????? ???? ?? ???? ??? ??? ???? ??? ???? ??? ?????? ??? ?????, ???? ????? ???? ?? ???-???? ????? ??? ?????? ??? ? 30% -40% ? 2.0 ?? ??? ??? ??? ????? ??? 40% -48% ??, ?? ?????? ???? ??? ??? ???? ?????? ??????.

???? ??? ??? ?????, ??? ?? ??, ?? ??? ??????? carbide ?? ??????, ???? ???? HRC60 ?????, ???? ????? ??? ?????, ??????? ???? 3-5 ?? ?? ???? ??; ??? ??? ??????? ????? ??? ? ??? ?????? ?? ??? ?????? ??? ???? ? ?????????? ? ??? ?? ??? ???? ????? ???? ???? HRC58-HRC62 ????? ? ???? ????, ?????? ???? ??? ?????? ???? ???? ≤ HRC32; ??? ????? ????? ???? ????, ?? ??????? ??? (?????? ???) ????? ????? ???? ? 5g ??? ??? ???? ???????, ??? ????? ?????? ?? ??? ??????. ?????.