Powder Injection Molding (PIM)


Powder Injection Molding (PIM) is an efficient, precision manufacturing process that combines metal, ceramic, or plastic powder with organic matter and is fed into the mold at high temperature and pressure. After curing and sintering, parts with high density, high strength and high precision can be obtained.

Pims can produce more complex geometric shapes than traditional manufacturing processes, such as casting, machining or cooling assembly, and can be manufactured quickly and in large quantities. Therefore, it is widely used in automobile, medical, communication and other fields.

It is important to note that during the PIM process, special attention should be paid to the details of the powder mixing and injection process to ensure the quality of the final product.

powder injection moulding process is divided into the following steps:

  • Powder mixing: metal, ceramic, plastic and other materials after pretreatment, according to a certain proportion of mixing.
  • Injection molding: The mixed powder and organic matter are injected into the mold through the injection machine, and the molding is carried out under high temperature and pressure. The process is similar to plastic injection molding, but requires a higher injection pressure and temperature.
  • Demoulding: After cooling the finished product, remove it from the mold.
  • Curing treatment: for plastic forming parts, can be cured by heating; For metal or ceramic forming parts, need to be dewaxed first, and then through sintering to achieve high density, high strength requirements.
  • Surface treatment: including grinding, polishing, spraying and other processes to improve the product surface quality and enhance the aesthetic degree.
  • Inspection package: Check and screen qualified parts, package and send to the customer for use.

In short, the PIM process enables efficient and precise mass production, but strict control of parameters is required at each step to ensure the quality of the final product.