Hidden dangers in the manufacturing process of components

A more effective method is that in the early stage of design, the designer will brainstorm with various experts and customers to find out and evaluate various potential defects. TPV has invited DELL and experts to carry out several trainings in this regard, and the results have been good. The production process of components is poor. No matter how detailed the operation instructions are and how much training is given, as long as there is someone involved, there are potential factors for quality variation. Because people themselves are a variable, yesterday, today and tomorrow will never be the same, and the longer the manufacturing process, the more factors these variations. Although the design and materials are perfect, due to variations in the manufacturing process, defective products may also be produced.

For these defective products, as long as the factory has a complete quality control system, it can generally filter out some of the defective products. This type of bad parts produced by the operation is caused by accidental variation factors, not the whole batch, so the damage to the whole machine factory is relatively small. To deal with such bad methods, the manufacturing industry usually has two magic weapons: strengthen education and training; improve the operation instructions, but often fail to achieve actual improvement results. The fundamental method is to conduct foolproof design in error-prone or critical processes to avoid human negligence. The product design and operation of the whole machine factory cause component failure, and the lack of design ratings is the main reason for component failure.

An 85 ℃ electrolytic capacitor works at 85 ℃ for a long time; a 500V withstand voltage transistor works at 500V for a long time. This part will definitely fail after a long time. In order to ensure the MTBF value of the whole machine, it is usually achieved by derating design.

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