Will there be defects in parts manufactured by mim powder injection molding?

Will there be defects in parts manufactured by mim powder injection molding?

MIM is a molding method that injects the plasticized mixture of metal powder and its binder into the model. It is to first mix the selected powder with the binder, then granulate the mixture and then inject it into the required shape. Is there any defect in the parts manufactured by mim metal powder injection molding? Let's take a look.

1： How to solve the small defects in the manufacturing of carbide structural parts by MIM metal powder injection molding?

1: Strictly control the temperature

When mixing, the cemented carbide powder needs appropriate adhesive. The cemented carbide powder and the adhesive are fully mixed. During the mixing process, the temperature is strictly controlled to avoid the volatilization and uneven distribution of the adhesive. The mixed feed has good rheological property and viscosity value, avoiding the defects of future links.

2: Degreasing with gradual temperature rise

During the degreasing process of sintered carbide, if the heating speed of the degreasing furnace is too fast, it will lead to carbide defects in the parts. The problem can be well avoided by using the method of gradually heating and degreasing.

3: Select high-purity powder

In addition to meeting the basic requirements of particle size distribution and particle size, the cemented carbide powder also requires high purity and can not use powder containing oil impurities. If the powder contains sulfur, phosphorus, silicon and other elements, it will cause product defects.

4: Pay attention to the injection pressure

In order to avoid defects of structural parts, when using MIM metal powder injection molding technology, it is necessary to reasonably control the mold temperature, injection volume, injection pressure and pressure time, and control the injection molding speed to effectively avoid defects of structural parts.

To sum up, it is the small defect of mim metal powder injection molding parts. I hope this article can help you. If you want to know more about mim powder, please pay attention to the zhongwei precision official website.