During the processing of precision parts, the quality of the product will be affected by various reasons, resulting in the failure of product processing. There are several reasons for this consequence. Now let's talk about the reasons for the failure of parts processing. The reasons for the failure of the product can be summarized into four aspects: material, installation and use, processing and design.
​Precision parts processing
    1. Inappropriate material selection is the main reason for material failure. It is common for designers to make decisions based only on the material's conventional performance indicators, and the defects of the material itself are also the reason.

    2. When installing and using the parts that have failed, if the fit is too loose, too tight, can not be fixed, poor alignment and improper operation may cause the use of failure.

    3. In terms of processing, various defects will be caused due to poor processing technology control. For example, improper control of heat treatment process leads to overheating, insufficient tempering, decarburization, etc. Overheating or overburning, etc. Poor cold working process will result in too low finish, too deep tool marks, grinding cracks, etc., which can lead to the failure of parts.

    4. The first reason for the design is that the part fails due to the unreasonable structure and shape of the design. For example, there is an obvious stress concentration source in the high stress area of ​​the part. The second is the error in estimating the working conditions of the parts, such as underestimating the possible overload in the work, so that the bearing capacity of the designed parts is not enough.