Let's talk about the difference between PM powder pressing and injection molding?

PM powder pressing technology and injection molding technology are special technologies, precision manufacturing, both have good material-saving processing characteristics, in some fields, they may be more suitable for PM powder pressing technology, and some precision parts will choose injection molding technology, which depends on Due to the needs of customers and spare parts for production and processing, the following editor will explain the difference between these two technologies in depth, so that you are no longer unfamiliar with powder pressing.

    One: What is PM powder pressing technology?

    1. PM powder pressing technology was developed in the United States as early as 1870, using a metal powder as a raw material, and then pressing copper-lead alloy bearings to realize the self-lubricating technology of bearings, and the processing technology of producing various parts by pressing and sintering.

    2. The PM powder pressing technology sounds unfamiliar to everyone, but I will make it simple for everyone to understand. The general steps are to decompose the main material into fine powder, then add the powder to the required mold, and then Pressing the forming mold, sintering completes all steps.

    Two: What is injection molding technology?

    1. Injection molding technology was born in California in 1973, referred to as MIM. It is a new type of PM powder compression molding technology invented by combining plastic injection molding technology with powder compression.

    2. The process of injection molding technology is similar to powder pressing technology. First, solid powder and organic binder are uniformly mixed together, heated and plasticized at 150 degrees, injected into the mold cavity by injection molding equipment, then cured, and then plasticized. The binder in the molded body is removed by thermal decomposition, and just like PM powder pressing, precision parts are produced by sintering.

    3. What is the difference between PM powder pressing and injection molding?

    For laymen, PM powder compaction and injection molding are relatively unfamiliar. They think that there are two completely different production and processing technologies. PM powder compaction technology actually includes injection molding technology, because injection molding technology is a part molding technology in powder compaction technology. One, the other is compression molding.

    Through the above in-depth explanation, I believe that everyone has a deep understanding of PM powder pressing technology and injection molding technology and their differences. PM powder pressing and injection molding technology will be used in automobiles, electronics, hardware, medical equipment, communications and other fields. Compared with the traditional process, it has higher precision and lower production cost, so it is also the mainstream process in the processing and production of various parts.

    The above is the content of the editor's explanation. Do you all understand? Thank you for your patience and watching. See you in the next issue.