5CrNiMnMoVSCa(5NiSCa)钢的热处理工艺对硬度的影响
5CrNiMnMoVSCa(5NiSCa)钢的热处理工艺对硬度的影响见表1。表15CrNiMnMoVSCa(5NiSCa)钢热处理工艺对硬度的影响(硬度HRC)
回火温度/℃ 淬火温度/℃
840 860 880 900 920 940 960
淬火态 60 62 63 63 63 63 61.5
175 58 58 59 59.5 59.5 59.5 58.5
200 57.5 57.5 57.5 58 58 58 58
225 56 56 56.5 56.5 56.5 56.5 56.5
250 55 55.5 55.5 56 56 56 56
300 53.5 53.5 54 54.5 54.5 54.5 54.5
400 50 50.5 50.5 51 51.5 51.5 51.5
500 46.5 47.5 48 48.5 48 50 50
525 45 46 47.5 48 48 49 49
550 44 46.5 46.5 47.5 47.5 48 48.5
575 43 44 45.5 47 47 48 48
600 40.5 41.5 43.5 45 45 45.5 46.5
625 36 39 39 41.5 42.5 43.5 44.5
650 33.5 33.5 36 37 37.5 38.5 40
675 30.5 31 32.5 33 33.5 34 35
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