The manufacturing method of metal powder injection molding technology was analyzed

In recent years, metal powder injection molding (MIM) technology is more and more widely used in our production and life, so for the manufacturing method of metal powder injection molding technology, do you all know? Based on the manufacturing experience of metal powder injection molding technology, dahong new material will introduce the manufacturing method of metal powder injection molding technology.

The main manufacturing methods of metal powder injection molding (MIM) are water atomization and gas atomization.

1. Water atomization method

Select stainless steel raw materials -- melting in intermediate frequency induction furnace -- composition adjustment -- deoxidation and slag removal -- atomization powder making -- quality detection -- screening -- packaging and warehousing. The main equipment used is medium frequency induction furnace, high pressure water pump, fully enclosed powder making device, circulating water tank, screening and packaging equipment, testing instruments.

2. Aerosol method

Select stainless steel raw materials -- melting in intermediate frequency induction furnace -- composition adjustment -- deoxidation and slag removal -- atomization powder making -- quality detection -- screening -- packaging and warehousing. The main equipment used is medium frequency induction furnace, nitrogen source and atomizing device, circulating water tank, screening and packaging equipment, testing instruments, etc.

The manufacturing methods of the two metal powder injection molding (MIM) technologies mentioned above have advantages and disadvantages:

1. Water atomization is the main pulverizing process, with high efficiency and economical mass production, which can make the powder fine but irregular in shape, which is conducive to shape preservation, but more binders are used, affecting the accuracy. In addition, through technical experience, dahong new materials found that oxidation film formed by the high temperature reaction of water and metal hinders sintering.

2, gas atomization is the main method for the production of metal injection molding technology powder, the powder produced is spherical, low degree of oxidation, less binder required, good formability, but very fine powder yield is low, high price, shape retention is poor, and the binder in C, N, H, O has an impact on the sintered body. The MIM expert of daihong new material found that the powder produced by carbonyl method has high purity, stable at the beginning and extremely fine particle size, which is most suitable for MIM technology, but only limited to Fe,Ni and other powders, and cannot meet the requirements of the variety.

The above content is to introduce the main manufacturing methods of metal powder injection molding (MIM) technology and the analysis of the advantages and disadvantages of the two methods. If you have any questions, please feel free to consult the professional team of metal powder injection molding technology of guangdong dahong new material.