Wipe the surface of the outer cover with clean gauze. The inspector should wear a touch glove to touch the surface of the stamping piece longitudinally along with the stamping part. The inspection method depends on the inspection Staff experience. Whenever possible, whetstone can be used to polish and verify suspicious areas to be detected, but this method is an effective rapid test method.
2. Oiled test
Wipe the surface of the outer cover with clean gauze. Then use a clean brush along the same direction evenly oiled to the entire outer surface of the stamping. The coated oil stamping parts On the bright test, it is recommended that the stamping parts erected on the body position. This method can be easily found on the stamping parts of tiny pitting, deflated ponds, ripples.
3 flexible gauze grinding
Wipe the surface of the outer cover with clean gauze. With a flexible sand screen pressing the workpiece surface along the vertical grinding to the entire surface, any pitting, indentation will be easily found .
4. Whetstone polished
1), first clean the outer cover with a clean gauze, and then sanding it with whetstone (20 × 20 × 100mm or larger), with circular arcs and hard-to-reach Side with a relatively small whetstone grinding (for example: 8 × 100mm semicircle whetstone)
2), the choice of rock size depends on the surface conditions (such as roughness, galvanized, etc.). It is recommended to use fine-grained whetstone. The direction of whetstone grinding is basically in the longitudinal direction, and Good fit stamping surface, some special places can also add horizontal grinding.
Visual inspection
Visual inspection is mainly used to find the appearance of stamping parts and macro defects
Gage detection
The stamping parts into the seizure, according to seizure instructions manual operation, the South skin stamping parts for testing.
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