Inspection method of metal stamping parts

1. Visual inspection: Visual inspection is mainly used to find abnormal appearance and macro defects of stamping parts. 2. Touch inspection: Wipe the surface of the outer cover with clean gauze. The inspector needs to wear touch gloves to touch the surface of the stamping part along the longitudinal direction of the stamping part. This inspection method depends on the inspector's experience. If necessary, oilstone can be used to polish and verify the suspicious area being detected. 3. Whetstone polishing 1. The choice of the whetstone particle size depends on the surface condition. It is recommended to use fine-grained oilstone. The direction of whetstone grinding is basically along the longitudinal direction, and it fits well on the surface of the stamping parts. Some special places can also be supplemented with horizontal grinding. Polishing of the flexible gauze 2. First, wipe the surface of the outer cover with a clean gauze, and then use oilstone for polishing, and use relatively small oilstone to polish the outer cover with a clean gauze for arcs and hard-to-reach places. Wipe the surface of the cover clean. Use a flexible sand net to close the surface of the stamping part and grind it to the entire surface in the longitudinal direction. Any pitting or indentation will be easily found. 4. Oiling inspection 　　 Wipe the surface of the outer cover with a clean gauze. Then use a clean brush to apply oil evenly along the same direction to the entire outer surface of the stamped part. Put the oiled stamping parts under strong light for inspection. It is recommended that the stamping parts be erected on the car body. Previous post: Advantages and disadvantages of buckle structure