How to check the quality of metal stamping parts processing?
Stamping is one of the most used processing methods in hardware processing. The processing of metal stamping parts refers to the process of forming molds for steel or non-ferrous metals and other plates at room temperature. The pressure required for processing is provided by a press to form a specified shape. . So how do metal stamping manufacturers inspect the quality of metal stamping parts? Let me share with you below.
For metal stamping processing, we must first control the quality of raw materials. The inspection period can be divided into material acceptance and material cleaning, inspection before production and after material. Next, the forming stamping parts can be inspected by the following five inspection methods.
1. 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 the detected suspicious area and verify it, but this method can be regarded as an effective quick inspection method.
2. Whetstone polishing
1. First, use clean gauze to wipe the surface of the outer cover of the metal stamping parts, and then use oilstone for polishing, and use relatively small oilstone for arcuate and hard-to-reach places.
2. The choice of 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, and some special places can also be supplemented with horizontal grinding.
3. Polishing of flexible gauze
Wipe the surface of the outer cover with 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.
Four, oiling inspection
Wipe the surface of the outer cover with 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.
Five, visual inspection
Visual inspection is mainly used to find abnormal appearance and macro defects of stamping parts.