The detailed steps used by precision sheet metal stamping parts processing plant to test products are as follows:

1. The quality inspector puts on gloves and touches the stamping parts close to the surface to check the polishing effect. This method is a fast and effective detection method.

2. Wipe the surface of the workpiece with a clean gauze and rub it with a stone. Whetstone with fine grain whetstone grinding direction roughly length direction, and combined with good stamping surface, part can also add special place transverse grinding.

3. Polish the flexible gauze and wipe the cover surface with clean gauze. The workpiece surface should be longitudinally ground with flexible sand mesh, which can easily show any pits and indentations.

4. For oil inspection, clean the cover surface with a clean gauze. Then apply a clean brush evenly across the entire outer surface of the press in the same direction. After the oil stamping parts are tested under strong light, the stamping parts are erected. In this way, it is easy to find small pitting spots, flat pits and ripples on the stamped parts.