凸圆柱面洛氏硬度修正值表
表1、金刚石圆锥压头试验（HRA/C/D标尺）
|
硬度值 |
洛氏硬度修正值 |
||||||||
|
曲率半径/mm |
|||||||||
|
3 |
5 |
6.5 |
8 |
9.5 |
11 |
12.5 |
16 |
19 |
|
|
20 |
|
|
|
2.5 |
2.0 |
1.5 |
1.5 |
1.0 |
1.0 |
|
25 |
|
|
3.0 |
2.5 |
2.0 |
1.5 |
1.0 |
1.0 |
1.0 |
|
30 |
|
|
2.5 |
2.0 |
1.5 |
1.5 |
1.0 |
1.0 |
0.5 |
|
35 |
|
3.0 |
2.0 |
1.5 |
1.5 |
1.0 |
1.0 |
0.5 |
0.5 |
|
40 |
|
2.5 |
2.0 |
1.5 |
1.5 |
1.0 |
1.0 |
0.5 |
0.5 |
|
45 |
3.0 |
2.0 |
1.5 |
1.0 |
1.0 |
1.0 |
0.5 |
0.5 |
0.5 |
|
50 |
2.5 |
2.0 |
1.5 |
1.0 |
1.0 |
0.5 |
0.5 |
0.5 |
0.5 |
|
55 |
2.0 |
1.5 |
1.0 |
1.0 |
1.0 |
0.5 |
0.5 |
0.5 |
0.0 |
|
60 |
1.5 |
1.0 |
1.0 |
0.5 |
0.5 |
0.5 |
0.5 |
0.0 |
0.0 |
|
65 |
1.5 |
1.0 |
1.0 |
0.5 |
0.5 |
0.5 |
0.5 |
0.0 |
0.0 |
|
70 |
1.0 |
1.0 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.0 |
0.0 |
|
75 |
1.0 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.0 |
0.0 |
0.0 |
|
80 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.0 |
0.0 |
0.0 |
0.0 |
|
85 |
0.5 |
0.5 |
0.5 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
|
90 |
0.5 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
表2、1.5875mm球压头试验（HRB/F/G标尺）
|
硬度值 |
洛氏硬度修正值 |
||||||
|
曲率半径/mm |
|||||||
|
3 |
5 |
6.5 |
8 |
9.5 |
11 |
12.5 |
|
|
20 |
|
|
|
4.5 |
4.0 |
3.5 |
3.0 |
|
30 |
|
|
5.0 |
4.5 |
3.5 |
3.0 |
2.5 |
|
40 |
|
|
4.5 |
4.0 |
3.0 |
2.5 |
2.5 |
|
50 |
|
|
4.0 |
3.5 |
3.0 |
2.5 |
2.0 |
|
60 |
|
5.0 |
3.5 |
3.0 |
2.5 |
2.0 |
2.0 |
|
70 |
|
4.0 |
3.0 |
2.5 |
2.0 |
2.0 |
1.5 |
|
80 |
5.0 |
3.5 |
2.5 |
2.0 |
1.5 |
1.5 |
1.5 |
|
90 |
4.0 |
3.0 |
2.0 |
1.5 |
1.5 |
1.5 |
1.0 |
|
100 |
3.5 |
2.5 |
1.5 |
1.5 |
1.0 |
1.0 |
.05 |
