The difference between MIM metal injection molding and powder metallurgy

Date：[2021/6/1]

At present, powder metallurgy has been recognized by the industry as a green and sustainable manufacturing process technology. The powder metallurgy process only needs to use a few less procedures to manufacture the same part, that is, it can complete more procedures and more complex processes. MIM metal injection molding is powder micro-injection molding. In order to facilitate the manufacture of microstructures, due to the increased specific surface area of the powder, a binder with low viscosity but sufficient strength is required. Now, the editor of Xintaiming tells you about the characteristics of MIM metal injection molding process and powder metallurgy process.
1. Characteristics of powder metallurgy process:
1. Material sustainability.
In terms of material sustainability, the final forming ability of powder metallurgy is its main advantage. For example, when forming a tooth-shaped part, up to 40% of the material in the traditional cutting process will turn into chips, while 85% of the powder used in powder metallurgy is produced from recycled materials. In the production process of powder metallurgy parts, the waste loss of each process is generally 3% or less, and the material utilization rate can reach 95%.
2. Energy sustainability.
In terms of energy sustainability, the general traditional manufacturing process requires several heating and reheating processes to form the final shape; when the atomization method is used to produce steel powder or iron powder, only one smelting of the scrap is required, and all other thermal processing The work is carried out at a temperature lower than the melting point, which not only saves energy, but also can be made into the final shape and the required material properties and mechanical performance. Through the comparison of the material utilization rate of the metal forming process, it is found that the energy required to manufacture powder metallurgy parts is 44% of forging-cutting parts.
3. Environmental sustainability.
In terms of environmental sustainability, due to the final forming ability characteristics of powder metallurgy, under normal circumstances, finished parts are made after sintering, which can be packaged and delivered. In most cases, the cutting oil used in the processing of powder metallurgy products is insignificant, and the toxic pollutants released from pollution sources such as cooling water are also very few. Compared with other manufacturing processes, the powder metallurgy parts industry has almost no harm to the environment.

The difference between MIM metal injection molding and powder metallurgy
2. Features of MIM metal injection molding process:
Powder micro-injection molding technology is a molding technology developed on the basis of traditional powder injection molding technology for parts with a size less than 1 micron. It is mainly used to continuously manufacture parts with microstructure surfaces and microstructures. The basic process steps are Traditional powder injection molding is basically the same. The surface quality and porosity of the prepared parts can be controlled by selecting the original powder and suitable sintering conditions. In order to prevent deformation, cracks and bubbles, MIM metal injection molding technology is more demanding on the process conditions of debinding and sintering.

The difference between MIM metal injection molding and powder metallurgy