Inspection method of stamping parts
1. Touch test
Wipe the surface of the outer covering with a clean gauze. The inspector shall wear touch gloves to touch the stamping part vertically and close to the surface of the stamping part. This inspection method depends on the inspector's experience. If necessary, the suspected area can be polished with oil stone and verified, but this method is an effective and rapid test method.
2. Whetstone grinding
2.1 first, clean the surface of the outer covering with a clean gauze, and then polish it with a whetstone (20×20×100mm or larger), and polish it with a relatively small whetstone where there is an arc and where it is difficult to reach (e.g., 8×100mm semicircular whetstone).
2.2 the choice of the particle size of the whetstone depends on the surface condition (such as the roughness, galvanized, etc.). Fine-grained whetstone is recommended. The direction of the whetstone grinding is basically along the longitudinal, and it fits well on the surface of the stamping parts, and some special places can also supplement the horizontal grinding.
3. Polishing of flexible gauze
Wipe the surface of the outer covering with a clean gauze. With the flexible sand mesh pressing the surface of the stamping parts along the longitudinal grinding to the entire surface, any pitting, indentation will be easy to be found.
4. Oil test
Wipe the surface of the outer covering with a clean gauze. Oil the entire surface of the stamping piece with a clean brush in the same direction. Put the stamped parts in the bright light for inspection. It is recommended to put the stamped parts on the position of the body. In this way, it is easy to find the minute pitting, dent and ripple on the stamping parts.
5. Visual inspection
Visual inspection is mainly used to find the abnormal appearance and macroscopic defects of stamping parts
6. Fixture detection
Put the stamping parts into the fixture and inspect the stamping parts according to the operation requirements of the fixture manual.
