合金结构钢真空热处理工艺
钢材牌号 |
淬火 |
回火 |
机械性能(不小于) |
||||||||
温度(℃) |
真空度(Pa) |
冷却 |
温度(℃) |
真空度(Pa) |
冷却 |
Rm (N/mm2) |
Rp0.2(N/mm2) |
A(%) |
Z (%) |
ak(N-m/cm2) |
|
45Mn2 |
840 |
1.3 |
油 |
550 |
5.3×104~7.3×104 |
油空冷 N2快冷 |
882.6 |
735.5 |
10 |
6 |
441.3 |
30SiMn2MoV |
870 |
1.3 |
650 |
1.3~0.13 |
|
882.6 |
784.5 |
12 |
9 |
490.3 |
|
16SiMn2WV |
860 |
1.3 |
200 |
空气炉 |
空冷 |
1176.7 |
882.6 |
10 |
8 |
441.3 |
|
20Mn2TiB |
860 |
1.3 |
200 |
空气炉 |
空冷 |
1127.7 |
931.6 |
10 |
7 |
441.3 |
|
30Mn2MoTiB |
870 |
1.3 |
200 |
空气炉 |
空冷 |
1471 |
- |
9 |
5 |
392.2 |
|
40CrMn |
840 |
1.3 |
520 |
5.3×104~7.3×104N2 |
快冷 |
980.6 |
833.5 |
9 |
6 |
441.3 |
|
25CrMnSiA |
880 |
1.3 |
450 |
5.3×104N2 |
快冷 |
1078.7 |
882.6 |
10 |
5 |
392.2 |
|
30CrMnSiA |
880 |
1.3 |
520 |
10-1或5.3×104 |
快冷 |
1078.7 |
882.6 |
10 |
5 |
441.3 |
|
50CrV |
860 |
1.3-0.13 |
500 |
1074.8 |
1127.7 |
10 |
- |
392.2 |
|||
35CrMo |
850 |
1.3-0.13 |
550 |
980.6 |
833.5 |
12 |
8 |
441.3 |
|||
40CrMnMo |
850 |
1.3 |
600 |
980.6 |
784.5 |
10 |
8 |
441.3 |
|||
20CrMnMo |
850 |
1.3 |
200 |
空气炉 |
空冷 |
1176.7 |
882.6 |
10 |
7 |
441.3 |
|
25Cr2MoV |
1040 |
1.3-0.13 |
700 |
0.13 |
快冷 |
735.5 |
588.36 |
16 |
6 |
490.3 |
|
25Cr2MoV |
900 |
1.3-0.13 |
620 |
0.13 |
931.6 |
784.5 |
14 |
8 |
539.3 |
||
38CrMoAl |
940 |
1.3 |
640 |
0.13 |
N2Ar强制 冷却 |
980.6 |
833.5 |
14 |
9 |
490.3 |
|
20Cr3MoWV |
1050 |
1.3 |
N2油 |
720 |
0.13 |
784.5 |
637.4 |
14 |
7 |
392.2 |
|
40Cr |
850 |
1.3-0.13 |
油 |
500 |
N25.3×104 |
980.6 |
784.5 |
9 |
6 |
441.3 |
|
40CrNi |
820 |
1.3-0.13 |
油 |
500 |
N25.3×104 |
980.6 |
784.5 |
10 |
7 |
441.3 |
|
12CrNi3 |
860 |
1.3-0.13 |
N2油 |
200 |
- |
空冷 |
931.6 |
686.4 |
11 |
9 |
490.3 |
37CrNi3 |
820 |
1.3-0.13 |
N2油 |
500 |
0.13,N25.3×104 |
N2 强制 冷却 |
1127.7 |
980.6 |
10 |
6 |
490.3 |
40CrNiMo |
850 |
1.3-0.13 |
600 |
980.6 |
833.5 |
12 |
10 |
539.3 |
|||
30CrNi2MoV |
860 |
1.3-0.13 |
650 |
882.6 |
784.5 |
12 |
9 |
490.3 |
|||
45CrNiMoV |
850 |
1.3-0.13 |
460 |
N25.3×104 |
1471 |
1323.8 |
7 |
4 |
343.2 |
||
18CrNi4W |
950 |
1.3 |
200 |
- |
空冷 |
1176.7 |
833.5 |
10 |
10 |
441.3 |
|
25CrNi4W |
850 |
1.3-0.13 |
N2 |
550 |
N25.3×104 |
N2 强制 冷却 |
1078.7 |
931.6 |
11 |
9 |
441.3 |
30CrNi3 |
820 |
1.3-0.13 |
N2油 |
500 |
- |
980.6 |
784.5 |
9 |
8 |
441.3 |
超高强度钢真空热处理工艺规范
钢材牌号 |
淬火 |
回火 |
机械性能(不小于) |
||||||||
温度(℃) |
真空度(Pa) |
冷却 |
温度(℃) |
时间 (小时) |
冷却 |
Rm (N/mm2) |
Rp0.2(N/mm2) |
A(%) |
Z(%) |
ak(N-m/cm2) |
|
30CrMnSiNi |
900 |
1.3~0.13 |
油或 260℃±20℃等温 |
250 |
1 |
空冷 |
>1569 |
- |
9 |
40 |
88.3 |
32SiMnMoV |
920 |
1.3 |
油或 280℃±20℃等温 |
320 |
2 |
空冷或N2 |
≥1765.1 ≥1667 |
≥1520 ≥1569 |
9~10 10~12 |
40~50 40~50 |
49 ~68.6 55.8 ~78.4 |
4 |