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How to check the quality of metal stamping parts?

date：2023/08/18

Stamping is the most used in the processing of metal processing means, metal stamping parts refers to the room temperature conditions, steel or non-ferrous metals and other sheet metal mold, press the press required to provide the required pressure to shape the specified shape. Then the metal stamping manufacturers is how to test the quality of metal stamping parts? The following Branch to share for everyone.
For metal stamping processing, first of all we have to control the quality of raw materials, inspection time can be divided into material acceptance and material before cleaning, before the production of inspection and materials. The following five types of inspection methods can be used to test the stamping parts.
First, touch test
Wipe the surface of the outer cover with a clean gauze. Inspectors are required to wear a touch glove along the stamping parts longitudinally close to the surface of the stamping parts, this test method depends on the experience of the inspector. If necessary, it can be used to polish the suspected suspicious area and verify it, but this method is an effective quick test method.
Second, Whetstone polished
1, first clean the surface of the outer cover with a clean gauze, then polish the use of Whetstone, where the arc and difficult to reach the place with a relatively small stone grinding
2, Whetstone size depends on the choice of surface conditions. It is recommended to use fine-grained Whetstone. The direction of the polished stone is basically along the longitudinal direction, and the surface of the stamping part is well fitted, and some special places can also be added to the lateral grinding.
Third, the flexible gauze polished
Wipe the surface of the outer cover with a clean gauze. With a flexible sand net close to the stamping surface along the longitudinal direction to the entire surface, any pitting, indentation will be easily found.
Fourth, oil test
Wipe the surface of the outer cover with a clean gauze. And then evenly brush the oil in the same direction with a clean brush to the entire outer surface of the stamping part. Put the finished oil stamping parts on the test under the strong light, it is recommended to put the stamping parts in the body position. With this method can be easily found on the stamping parts of the tiny pitting, deflated pond, ripple.
Fifth, visual inspection
Visual inspection is mainly used to find the appearance of the stamping parts and macroscopic defects.