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How to judge and inspect the quality of automobile sheet metal stamping dies
- 2020-04-03-

Do you know how to judge and inspect the quality of automotive sheet metal stamping dies? There are many factors that affect the quality of automotive sheet metal stamping dies. First of all, we have to control the quality of raw materials, preferably before the acceptance of raw materials and cleaning of materials. Before the production, the raw materials are inspected, and only good raw materials can produce a good automobile sheet metal stamping die. The following editors will introduce to you the method of checking automotive sheet metal stamping dies.

Touch inspection wipes the surface of the outer cover with clean gauze. The inspector needs to wear touch gloves to touch the surface of the stamped part along the longitudinal direction of the stamped part. This inspection method depends on the experience of the inspector. Whetstone can be used to polish the suspicious area and verify it if necessary, but this method is an effective and rapid test method.

Whetstone polishing First clean the surface of the outer cover with clean gauze, and then use whetstone to polish. Where there are arcs and hard-to-reach places, use a relatively small whetstone to polish. The choice of whetstone size depends on the surface conditions. It is recommended to use fine-grained whetstone. The grinding direction of the oilstone is basically along the longitudinal direction, and it fits the surface of the stamping part well. Some special places can also supplement the horizontal grinding.

Grinding of flexible gauze wipes the surface of the outer cover with clean gauze. Grind the surface of the stamped part with the flexible sand net to the entire surface in the longitudinal direction, and any pitting and indentation will be easily found. For oiling inspection, wipe the surface of the outer cover with clean gauze. Then use a clean brush to evenly apply oil to the entire outer surface of the stamping in the same direction. Put the oiled stamped parts under strong light for inspection. It is recommended to put the stamped parts upright on the body. This method can easily find tiny pits, deflated ponds and ripples on stampings.

Visual inspection Visual inspection is mainly used to find abnormal appearance and macro defects of stamping parts. The above is how to share the quality of the metal stamping parts provided by the metal stamping factory. After understanding these inspection methods, if you can perform the operation proficiently, you can detect the quality of the product very well, no longer need to be inferior. Worry about product negligence.