Six inspection methods that must be mastered for automobile stamping parts

1. Touch inspection 　　 Wipe the surface of the outer cover with a 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 the detected suspicious area and verify it, but this method can be regarded as an effective quick inspection method. 2. Oiling inspection 　　 Wipe the surface of the outer cover with a clean gauze. Then use a clean brush to apply oil evenly to the entire outer surface of the stamping in the same direction. Put the oiled stamping parts under strong light for inspection. It is recommended that the stamping parts be erected on the car body. This method can easily find tiny pits, pits, and ripples on the stamping parts. 3. Polishing of the flexible gauze 　　 Wipe the surface of the outer cover with a clean gauze. 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. Whetstone polishing (1) First, wipe the surface of the outer cover with a clean gauze, and then use oilstone (20×20×100mm or larger) for polishing. It is relatively better for places with arcs and places that are difficult to reach. Small whetstone grinding (for example: 8×100mm semi-circular whetstone) 　　 (2) The choice of whetstone particle size depends on the surface condition (such as roughness, galvanizing, etc.). 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. 5. Visual inspection 　　Visual inspection is mainly used to find the appearance abnormalities and macro defects of the stamping parts. 6. Inspection tool inspection 　　 Put the stamping parts into the inspection tool, and inspect the Nanpi stamping parts according to the operating requirements of the inspection tool manual. Related news: The characteristics of the main materials of stamping parts, the treatment of common problems of stamping parts, the characteristics of scaffolding stamping parts and the importance of inspections