Quality Inspection Methods in Stamping Parts Production
Release time：2018-06-20 09:52
Stamping is located in the first of the four processes of automobile manufacturing. Stamping parts as the basis of automobile body quality assurance, its quality is directly related to the pros and cons of the whole car, and its importance is self-evident. Its quality inspection methods are:
1. Material inspection
The quality control of materials is divided into inspection of material acceptance, inspection before and after material cleaning, and inspection before material production. The purpose is to confirm that the material quality meets the production requirements.
2. First article 1 sequence inspection
The first piece of stamping parts determines the quality of the whole batch of parts, and the first piece 1 sequence inspection is an important part of the first piece inspection. The specific way to observe whether the parts have to mark, crack, fold, deformation and other undesirable phenomena.
3. Online partition check
100% inspection of stamping parts is mainly realized by partition inspection, including visual inspection and tools.
4. First piece, intermediate piece and end piece extraction inspection
The first piece, intermediate piece, tail piece extraction inspection, can better achieve quality control.
5. Inspection for whole basket of parts
Confirm the quality of the whole basket after loading, which can avoid the outflow of bad parts caused by the inapplicability of personnel loading basket and station equipment.
6. Detection of thinning rate of sheet metal
The thickness tester is used to detect the thinning rate of the parts easy to crack analyzed by CAE and the parts crack in production, which can give early warning to the dangerous parts of the parts easy to crack in advance.
7. Detection of parts precision
Using tools to carry out full-size accuracy detection on the parts (first piece) can give early warning to the parts with large change in qualified rate in advance, so as to avoid affecting the dimensional accuracy of the whole vehicle.
8. Hand repair of defective products
Hand repair of defective products refers to the whole basket and secondary selection inspection of the parts after the parts are repaired. The purpose is to repair the defects detected in each quality control project, avoid the outflow of defective products and reduce the loss of scrap.
9. Second selection and inspection of parts
The second selection inspection after the production of the easily cracked parts can avoid the outflow of defective products due to the failure of the previous inspections.
10. Inspection of parts leaving warehouse
This is the last pass in the quality control of the parts. Through the reconfirmation of the outbound inspection, the outflow of defective products can be effectively avoided.
Various quality inspection methods can be summarized as pre-production control, in-production control and post-production control, which can achieve the purpose of "not accepting defective products, not manufacturing defective products and not flowing out defective products.
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