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4. ???????? ????? ???? ????? ???? ????? ?? ???? ?? ????? ????? ??? ??? ?????? ?????? ???? ??? ????? ?????? ?? ??? ???? ????? ??? ?????? ???? ???.
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???????? ????? ??? ???????? ?? ??????? ?????? ???? ????. ???????? ???????? ????? ???? ????? ???? ??? ?????? ?? 2μm ~ 4μm? ???? ????? ?????? ?? lμm ????? (???? ??? ?????? ????? ???????? ????? ???? ????? ????) ????????? ?? ????? ?????? ???? ??????? ???????: ????? ???????? ?? ????? ????? ????? ?????? ????? ????? ???? ?? ????? ????? ????????? ?? ??? ?? ????? ?????? ?? ???? ?????? ?????? ?????? ??????? ?? ????? ????? ?? ???? ??????? ??????? ?? ?????? ????? ??? ?????? ??? ???? ??????? 400 ℃ ~ 600 ℃? ???? ?????? YG6X ?????? ?????? is1200HV ~ 1400HV? ? ??????? ????? ????? ?????? YG6X ???? ?? 1500HV-1600HV. ??????-??? ???? ?????? ???????? ????? ???? ????? ????.
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1. YG6 (C: 94?? ??: 6?): ?????? ?????? ???????? ?????? ???????? ????. ????? ?? ??? ?? 89.5HRC? ??? ??? ?? ¢ 20.00mm ????? ??????? ??? ???????? ???? ??? ????.
2. YG8 (?????: 92?? ??: 8?): ????? ??????? ???? ???? ?? YG6? ???? ?????? ?????? ?????? ???? ?? YG6? ????? ???? ??? ?? 89HRC? ?????? ??? ???????? ???? ??????? ?????.
3. YG10: ??? 2400MPa? ?????? ???? ??? ?? 88.5HRA? ?????? ????? ????? ???? ???????? ???? ????? ????? ????.
4. YG15: ??? 2800MPa? ?????? ???? ??? ?? 87HRA? ????? ????? ????? ????????? ???? ?????? ????? ?? ???? ?????.
???? ???????? ????? ???? ????? ???? ???? ?????? ?????? ?????? ???? ????? ??????? ??????? ?????? ?????? ?????? ???????? ???????? ??????? ?????? ?????? ??? ??????? ??? ???? ???? ???? ?????? ?????? ?? ??????? ???? ?? ???? ?????.
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