Tungsten Carbide Ball National Standard (JBT9145-2010) IV
- Details
- Category: Tungsten Information
- Published on Tuesday, 15 September 2015 16:43
Tungsten carbide ball shape tolerances, surface roughness, the variation of the batch diameter table as follow:
|
Tolerance level |
The variation of ball diameter VDws max |
Spherical error △spb max |
Surface roughness Ra max |
The variation of batch diameter VDwl max |
Diameter tolerance(μm) |
|
|
ES |
EI |
|||||
|
3 |
0.08 |
0.08 |
0.01 |
0.13 |
+5 |
-5 |
|
5 |
0.13 |
0.13 |
0.014 |
0.25 |
+5 |
-5 |
|
10 |
0.25 |
0.25 |
0.02 |
0.5 |
+10 |
-10 |
|
16 |
0.4 |
0.4 |
0.025 |
0.8 |
+10 |
-10 |
|
20 |
0.5 |
0.5 |
0.032 |
1 |
+10 |
-10 |
|
24 |
0.6 |
0.6 |
0.04 |
1.2 |
+15 |
-15 |
|
28 |
0.7 |
0.7 |
0.05 |
1.4 |
+15 |
-15 |
|
40 |
1 |
1 |
0.06 |
2 |
+20 |
-20 |
|
60 |
1.5 |
1.5 |
0.08 |
3 |
+20 |
-20 |
|
100 |
2.5 |
2.5 |
0.1 |
5 |
+40 |
-40 |
|
200 |
5 |
5 |
0.15 |
10 |
+60 |
-60 |
|
500 |
12.5 |
12.5 |
— |
25 |
+60 |
-60 |
|
Notice: The showing value is not count in surface defects so that we should avoid such defects in the measurement. |
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