Application of Metal Injection Molding Technology

Application of Metal Injection Molding Technology

In the past, in the traditional processing technology, a single component was made first and then assembled into a component. When using MIM technology, it can be considered to integrate into a complete single part, which greatly reduces the steps and simplifies the processing procedure. Compared with other metal processing methods, metal injection molding has high dimensional accuracy and requires no secondary processing or only a small amount of finishing. Now let's learn about the application of metal injection molding technology!

Application of metal injection molding technology:

Injection molding process can directly form thin-walled and complex structural parts. The shape of the product is close to the product requirements. The dimensional tolerance of parts is generally kept at about 0.1~0.3, especially for hard-to-machine cemented carbide. The processing loss of precious metals is particularly important.

The product has uniform structure, high density and good performance. During the pressing process, due to the friction between the mold wall and the powder, and between the powder and the powder, the pressing pressure distribution is uneven, resulting in the uneven microstructure of the pressing blank. This will cause uneven shrinkage of pressed powder metallurgy parts during sintering, so it is necessary to reduce the sintering temperature to reduce this effect, resulting in large porosity, poor material compactness, low density, and serious impact on mechanical properties of products.

On the contrary, metal injection molding is a fluid forming process. The existence of the binder ensures the uniform distribution of the powder, thus eliminating the uneven structure of the blank, and making the density of the sintered product reach the theoretical density of its material. Generally speaking, the density of pressed products can only reach 85% of the theoretical density. The high density of products can increase strength, toughness, ductility, conductivity and thermal conductivity, and improve magnetic properties.

Metal injection molding using MIM technology has high efficiency and is easy to realize large-scale and large-scale production. Its life is equivalent to that of engineering plastic injection mold. Due to the use of metal molds, MIM is suitable for mass production of parts. Because the product blank is formed by injection molding machine, the production efficiency has been greatly improved, the production cost has been reduced, and the consistency and repeatability of injection molding products are good, which provides guarantee for mass and mass industrial production.

Metal injection molding is applicable to a wide range of materials, which can be widely used in injection molding. In principle, any powder material that can be poured at high temperature can be manufactured into parts by MIM process, including materials that are difficult to process in traditional manufacturing process and materials with high melting point. In addition, MIM can also conduct material formula research according to user requirements, manufacture any combination of alloy materials, and make composite materials into parts. The application fields of injection molding products have spread across all fields of the national economy and have broad market prospects. The improvement of metal injection molding performance MIM process uses micron-sized fine powder, which can not only accelerate the sintering shrinkage, but also help to improve the mechanical properties of materials, extend the fatigue life of materials, and improve the resistance to stress corrosion resistance and magnetism.

The above is the application of metal injection molding technology. For more information, please feel free to contact us!