Beijing TIME 5100 - Page 8

8
Table 3
Parameter
Value
Impact energy
11mJ
Impact object weight
5.5g
Hardness of test tip
≥1600HV
Diameter of test tip
3mm
Material of test tip
Tungsten Carbide
Max. hardness of workpiece
940HV
Roughness of workpiece Ra
≤1.6μ m
Min. weight of workpiece
Test directly
>5kg
Need stable support
2～5kg
Need couplant
0.05～2kg
Min thickness of workpiece
Test directly
＞5mm
Need couplant
≤5mm
Min. depth of harden surface
0.8mm