The reasons for the failure of precision parts processing

At present, precision parts processing has become more and more outstanding in the processing industry. It is because of its excellence that it brings us a lot of convenience, that is, the scope of its use is getting wider and wider.

Precision parts processing refers to the whole process of making raw materials (or semi-wastes) into products. For precision parts processing, including the transportation and storage of raw materials, production preparation, blank manufacturing, parts processing, heat treatment, product assembly, and debugging, painting and packaging, etc. The content of precision parts processing is very common. Modern enterprises use the principles and methods of systems engineering to organize and guide consumption, and regard precision parts processing as a consumption system with input and output.

When processing precision parts, the process of modifying the shape, size, position, properties, etc. of the processed object to make it waste or semi-waste is called for the technological process. This is the main part of the machining process. It is divided into casting, forging, stamping, welding, machining, assembly and other processes. The mechanical manufacturing process generally refers to the sum of the machining process and the machine assembly process. Other processes are called auxiliary processes, such as transportation, storage, power supply, equipment maintenance, etc. The process is composed of one or more sequential processes, one of which is composed of multiple steps.

When machining precision parts, various reasons will be encountered, the product will also be affected, and the quality will be degraded, so what is the reason for the failure of precision parts machining?

Dongguan Zhanxun Machinery Technology, a screen printing machine manufacturer, analyzed the reasons for the failure of precision parts processing from four aspects: material, installation and use, processing and design.

One: Improper material selection is the main reason for material failure. In most cases, designers only make decisions based on the conventional performance indicators of the material, and the defects of the material itself are also one of the reasons.

Second: When installing and using the components that have already failed, if the fit is too loose, too tight, not fixed firmly, improperly aligned and improperly operated, it will lead to use invalid.

Three: In terms of processing, various defects will be formed due to poor processing technology control, which will cause failure. For example, improper process control can cause overheating, insufficient tempering, decarburization, etc. Overheating or overheating, etc. Poor cooling process will cause too low brightness, too deep knife marks, grinding cracks, etc., which may cause the failure of parts.

Fourth: The first reason for the design is the failure of the part due to the unreasonable structure and shape of the design. For example, there is obvious stress concentration in the high stress area of u200bu200bthe part. The second is the error in the estimation of the working state of the components, such as insufficient estimation of the possible overload in the work, so that the designed components cannot bear enough load.