1、常用金屬材料熱處理規范(1HRC1/10HB)I丨臨界點 丨熱處理規范丨硬 度|I 鋼 號 II111III(C) I工序名稱丨加熱溫度(C)I冷卻方式I HB HRC I1I Ac1 735I正火I880- 930I空冷IHB< 1561 20I Ac3 855I滲碳I920- 950II1I Ar3 835I滲碳淬火I860- 880I水或油冷IHRO 56111I Ar1 6801I高溫回火I650- 6801I空1冷I芯部HB1501111I Ac1 724I正1火I1850- 8901I空冷I1HB< 1851 35I Ac3 802I退火I840- 890I爐冷I1I

2、Ar3 774I高溫回火I650- 680I空冷I1I Ar1 680I淬火I850- 890I水冷IHRO 47111I1I回火I1500- 5401I空1冷IHB241-28611111I Ac1 724I退1火I1820- 8401I爐冷I1HB< 2071 45I Ac3 780I正火I830- 870I空冷IHB< 2291I Ar3 751I高溫回火I650- 680I空冷I1I Ar1 682I淬火I820- 860I水冷IHRC50-60111I1I回火I1520- 5601I空1冷IHB228-28611111I Ac1 735I正1火I1900- 9301I空冷

3、I1HB< 1791I Ac3 854I高溫回火I659- 680I空冷I20MnI Ar3 835IIII111I Ar1 6821II11I1I11111I AC1 734I退1火I1830- 8801I爐冷I135MnI AC3 812I正火I850- 880I空冷IHB< 1871I Ar3 796I高溫回火I650- 680I空冷I1I Ar1 675I淬火I850- 880I水或油冷IHRC50-55111I1I回火I1400- 5001I空1冷IHB302-33211 1 11I臨界點I熱處理規范iI硬1度1鋼號I11I11 11I(C)1 1 1I工序名稱丨加熱溫度

4、(C)I冷卻方式I1HBHRC1 1 1I Ac1 7261I退火I820- 8501I爐冷I1HB< 21745Mn I Ac3 790I正火I830- 860I空冷II Ar3 768I高溫回火I650- 680I空冷II Ar1 689I淬火I810- 840I水或油冷IHRC54-60I1 1 1I回火I根據需要回火1 1I水或空冷I1i常用金屬材料熱處理規范1丨臨界點1鋼號丨I熱處理規范I硬度HB HRC1 1I工序名稱丨加熱溫度（C）1 1I冷卻方式I111 11(C)11 111I Ac1 725I退1火I840- 8701I爐冷I1HB< 18720Mn2I Ac3

5、 844I正火I870- 900I空冷I11 1I1I高溫回火I650- 6801I空1冷I11 135SiMn1I Ac1 750I退1火I1850- 8701I爐冷I1HB< 2291I Ac3 830I正火I880- 920I空冷I1I Ar3 -I高溫回火I650- 680I空冷I1I Ar1 645I淬火I880- 900I油冷IHRO1II回火I1580- 6001I油1冷IHB235-277111rI 42Mn2V| Ac1 725I正1火I1860- 9001I空冷I11I Ac3 770I高溫回火I640- 680I空冷IHBC 2171II淬火I850- 870I水冷

6、IHRC56-5811 1I1I回火I1530- 6701I空1冷IHB362-37511 111I Ac1 765I退1火I1850- 8701I爐冷I1HB< 18730CrMnI Ac3 838I正火I870- 890I空冷I1I Ar3 798I高溫回火I650- 680I空冷I1I Ar1 700I淬火I850- 880I油或水冷IHRO 4511 1I1I回火I1560- 5801I空冷IHB223-2691 111I AC1 760I退1火I1840- 8601 1I爐冷550 C后空冷30CrMnI AC3 830I正火I860- 880I空冷IHB< 217SiI

7、 Ar3 705I高溫回火I630- 710I空冷I(35)I Ar1 670I淬火I860- 900I油冷I1II回火I590- 610I油或水冷IHB269-302I丨臨界點 丨熱處理規范丨硬 度II 鋼 號II111III（C） I工序名稱丨加熱溫度（C）I冷卻方式I HB HRC IIAc1 740I正火I950- 970I空冷 I HB156-20720CrMnIAc3 825I滲碳淬火I930- 950/850I油冷 I HRC58-63TiIAr3 730IIII芯部IAr1 650IIII HRC30-451I臨界點1鋼號I1I（c）1III熱處理規范I硬度IIHB HRC I

8、I1I工序名稱丨加熱溫度（C）1 1冷卻方式III1III Ac1 766I退I火II860- 890I爐冷I1HB< 179I20Cr I Ac3 838I正火I870- 900I空冷III Ar3 799I滲碳淬火I920- 950/850I水或油冷IHRC58-63 II Ar1 702IIIII高溫回火I650- 680III空II冷I芯部HBC 300I Ac1 743I退I火I825- 845I爐冷I1HB< 207I40Cr I Ac3 782I正火I850- 880I空冷IHB156-207 II Ar3 730I高溫回火I650- 680I空冷III Ar1 69

9、3I淬火I830- 860I油冷IHRC52-60 IIIIIII回火III540- 580III油或水冷IHB269-302 II Ac1 735I退火I840- 850II爐冷I1HB< 241I40CrMnI Ac3 780I正火I850- 880I空冷IHB< 321IMoI Ar3 -I高溫回火I660- 680I空冷IHBC 241II Ar1 680I淬火I840- 860I油冷IIII回火I670- 690I水冷IHB241-286 IIIIIII正火回火I680- 700III空II冷IHB179-241 I1I Ac1 755I正I火I860- 880I空冷I1

10、HB241-286 I35CrMoI Ac3 800I淬火I850- 880I水或油冷III Ar3 750I回火I570- 590I空冷IHB235-277 II Ar1 695IIIIIIIII IIIIII1I AC1 800I退火I840- 870I爐冷I1HB< 229I38CrMoI AC3 940I正火I930- 970I空冷IIAlI Ar3 -I高溫回火I700- 720I空冷III Ar1 730I淬火I930- 950I油或水冷III 鋼 號II111III（C） I工序名稱丨加熱溫度（C）I冷卻方式I HB HRC I回火I650- 670I水或油冷I HB241

11、-277氮化I550- 650II HV> 8501 1I1伽H1臨界點I熱處理規范1 1I硬度1鋼號II111III1 (C)III工序名稱丨加熱溫度（C）I冷卻方式IHB HRC11IIAc1 727I退I火II810- 860II爐冷I1HB< 220| 6 5Ac3 752I正火I820- 860I空冷IIAr3 730I高溫回火I650- 680I空冷IIAr1 696I淬火I780- 830I水或油冷IIII1III回火III550- 650III空II冷IHB207-2411IAc1 726I退火I780- 840I爐冷I1HB< 22965Mn IAc3 76

12、5I正火I820- 860I空冷IHB< 269IAr3 741I高溫回火I650- 680I空冷IIAr1 689I淬火I780- 800I油冷IHRC52-60III1III回火III500- 540III油或水冷IHB415-4441IAc1 755I退火I740- 760II爐冷I1HB< 22260Si2 IAc3 810I正火I830- 860I空冷IHB< 302MnIAr3 770I高溫回火I640- 680I空冷IIAr1 700I淬火I840- 870I油或水冷IIII1III回火III400- 450III空II冷IHB387-4771IAc1 745I

13、退火I790- 810I爐冷I1GCr15 IAc3 900I球化退火I780- 790I爐冷IIAr3 -II ( 等溫 710-720)I空冷IHB207-229IAr1 700I正火I900- 950I空或風冷IHBI1I高溫回火I650- 700I空冷IHB229-285I1I淬火I825- 850I油冷IIII1III回火III150- 170III空II冷IHRC61-651IAC1 730I退火I750- 770I爐冷I1I AC1 丨退 火丨870- 890丨爐冷至600 C空冷 HB155|11鋼111 1 丨臨界點 號丨1（C）1 11I熱處理規范1I硬度HB HRC1 1

14、I工序名稱丨加11 1叮熱溫度（C）I冷卻方式I1I T71 1I AC3 7701I等溫退火I1780- 7901I爐冷I1I T8I Ar3 -II（等溫 710-720）I空冷IHB229-2851I Ar1 700I正火I790- 820I空冷IHB228-2411II高溫回火I650- 700I空冷I1II淬火I800- 830I水或油冷I11I1 1I回火I1149- 1601I空1冷IHRC60-6111 111I臨界點I熱處理規范1I1硬度 I1鋼號I111111II11 1I（C）1I工序名稱丨加熱溫度（C）I冷卻方式IHB HRC I11 111I Ac1 730I退1火I

15、1750- 7801I爐冷I1IT 10I Ac3 752I等溫退火I620- 680I爐或空冷IHBC 197I1I Ar3 730I高溫回火I650- 680I空冷II1I Ar1 696I淬火I770- 810I水或油冷II1II回火I140- 160I空冷IHRC58-62 I11 1I1I正火I1800- 8501I空1冷II11 111I Ac1 800I退1火I1850- 8701I爐冷I1ICr12I Ac3I等溫退火I720- 750I爐或空冷IHB228-255 I1I Ar3I淬火I1000-1050I油冷II11 1I Ar1 7601I回火I1400- 4501I空1

16、冷IHRC60-63 I11 111I Ac1I退1火I1850- 8701I爐冷I1IW18Cr4I Ac3I等溫退火I850- 870I爐冷IIVI Ar3II （ 等溫 720-750）I爐或空冷IHB207-255 I1I Ar1I淬火I1. 預熱 800-850III1III加熱 1260-1300I油冷II1III2. 預熱 550-650III1III800-850III1III加熱 1260-1300I油冷II11 1I1I回火I1550-570 回 3 次1I空1冷I HRC63-65 I1 111I Ac1I退1火I1870- 8901I爐冷至1600 C 空冷 HB155I2Cr13I Ac3I淬火I100