Preventive measures for surface crater defects of stamping panels

Stamping parts are mainly identified by methods such as visual inspection, light and oil inspection, hand touch, flexible sand mesh polishing, oilstone polishing, etc., and there should be areas with sudden changes in reflection direction, unsmooth touch, broken polished lines, and original black spots. It can be considered that there is a pit bag defect.

The preventive measures for pit bag defects are:

1. Acceptance of incoming materials

All steel plates should be inspected in batches before stamping production. The focus is to check cleanliness and performance indicators to ensure that unqualified steel plates are not accepted.

2. Process control

Strictly operate in accordance with the operating procedures and set inspection points in accordance with the process flow. The products of the production line must be inspected item by item by inspectors to verify whether they meet customer requirements, to ensure that production is carried out under the conditions that product requirements are met, and to avoid batch pits produce.

3. Mold maintenance

The mold is the carrier that produces the pit bag defect, and the maintenance of the mold itself plays an important role in preventing pit bag. Preventive maintenance of molds should be based on the mold status and quality requirements of each part to establish the maintenance frequency, and analyze the quality of the parts to analyze the primary problems. Develop a mold maintenance plan from three perspectives: time, category, and nature. (Guide: Detailed explanation of stamping die materials and heat treatment process)

4. Homework

The main reason for the failure of the pit package is man-made random error, so the promotion of the standardization of production, packing, rework, and logistics links is an effective way to prevent the pit package. To control human operation errors, it is necessary to conduct special management of process documents. The workshop system personnel are responsible for uploading, controlling and archiving process documents, ensuring their integrity, ensuring that the operation is based on evidence; and regularly checking the suitability of various parameters and operating methods Use the test method to confirm and review, so as to realize the continuous consolidation and perfection of the process documents.

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