Lianyungang Fuchi Intelligent Manufacturing Technology Co., Ltd. has 67 powder injection machines, 5 automatic injection machine production lines, and brands such as Rijing and Haitian. At present, it is the largest MIM powder injection manufacturer in North Jiangsu.

Content of injection: The MIM feed formed by mixing metal powder and organic binder is used to prepare the product blank by injection molding, which is the first and most important step in the MIM process. Powder injection is a continuous process. The SPC data and forming parameters of the blank weight need to be checked frequently to ensure that the blank is correctly formed to ensure the appearance and size requirements of the final product;

Any change of injection parameters during injection will lead to the change of injection blank; Adjust to solve the injection problem.

Notes on injection parameters: 

1) For the mold, check whether the processing dimensions of the mold are consistent with the design drawings, and focus on the key dimensions marked on the product drawings. Also check the position, depth and length of the exhaust chute, gate size, slider closure, and smoothness.

2) Speed, the slower the powder injection speed is, the better. If the injection speed is too fast, due to inertia and other reasons, serious flash appears on the green;

3) Temperature, injection powder raw materials are very sensitive to temperature, and temperature changes will bring about significant changes in liquidity.

4) Pressure: ensure that the product is full during injection. Once the cavity is filled, a peak pressure will be generated, which is also the pressure holding pressure.

5) Time, cooling time is the time required for the material to completely solidify in the mold cavity; The cooling time depends on the wall thickness of the part;

The debugging of the powder injection machine is to find and establish the best injection molding parameters, so as to produce a defect free green;

In some cases, the MIM injection process needs to carry out batch tests or tests, especially the powder injection used to produce automobile parts. For such MIM parts with long verification cycle and high performance requirements, find the best molding parameters to ensure the quality and stability of the final product.