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Nov 12,2022

How much does the principle of processing technology affect the machining accuracy of precision mechanical parts?


In the process of machining precision mechanical parts, in order to achieve the contour of the machined part surface, we need to use approximate forming operation or blade contour to process precision parts. In this process, errors inevitably occur, which is called machining principle error. In theory, in order to reduce surface roughness and achieve precise surface of the processed components, it is necessary to adopt ideal machining principles and precise forming movements. In the actual machining process of precision machine tools, it is difficult to achieve precise machining principles, and there may still be some gaps between them and the ideal values. If we only pursue precise theories, it often affects the efficiency of precision machining enterprises and cannot achieve the expected results. In the process of precision machining, the complex structure between the machine tool and the machining tools also increases the difficulty of machining. There are too many complex structural links, which can cause errors in the operation of the machine tool, making it difficult to ensure the accuracy of precision machining parts. Facing an important problem for precision machining enterprises, it is how to more reasonably use approximate principles to increase the machining accuracy of parts, thereby ensuring the accuracy of the machining process and ensuring the quality of the processed parts. At the same time, by adopting scientific and reasonable process measures, the productivity of precision machining parts can be effectively improved, thereby improving the economic benefits of enterprises.

Nov 12,2021

Key technical points of metal powder metallurgy products


Metal powder metallurgy is a process technology that produces metal or uses metal powder (or a mixture of metal powder and non-metal powder) as raw material, undergoes forming and sintering, and manufactures metal materials, composites, and various types of products. Metal powder metallurgy products have been hailed as one of the most popular metal component forming technologies internationally. Their main processing techniques include powder compression molding, powder injection molding, and 3D printing molding. Metal powder metallurgy products mainly use powder as the raw material, and the characteristics of powder determine the product design, formula, mold, forming process, degreasing, sintering process, and secondary processing in the process, ultimately determining the quality of the product. The metal powder injection molding process is used to produce metal powder metallurgy products. It is a new near net forming technology developed by combining traditional powder metallurgy technology with plastic injection molding process. It uses metal or ceramic powder with appropriate adhesive, achieves the purpose of forming through injection molding, and finally obtains powder metallurgy products through degreasing and sintering. The main technical key lies in the fine powder suitable for solid-state sintering operation, which needs to have good shape retention and achieve good sintering density. The higher the vibration density of the powder, the higher the density of the sintered part. The complex binder additives, fully mixed feeding, high-precision molds, fast replication injection molding machines, high-speed, safe and effective catalytic degreasing, solid-state sintering, and metal phase diagrams are used, The scientific knowledge of materials science is used to ensure the density and shape retention of the raw material to the sintered body, thereby achieving high-quality products.

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