Which is better for mim metal injection molding or precision casting?

Which is better for mim metal injection molding or precision casting?

Mim metal injection molding 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. The polymer endows the mixture with its viscous flow characteristics, which contributes to the uniformity of forming, mold controlled filling and powder filling.

Which is better for mim metal injection molding or precision casting? Let's follow Zheng Lang to have a look!

1： Comparison of processing performance between mim metal injection molding and precision casting

For metals or alloys with relatively low melting point, precision casting can also form parts with three-dimensional complex shapes. However, there is nothing to be done for refractory metals and alloys, hard alloys, cermets, ceramics, etc., which is determined by the essence of precision casting. Moreover, it is very difficult or infeasible to use precision casting for metal parts with small size, thin wall and large volume.

Comparison of MIM metal injection molding and precision casting features:

1: Materials

Mim: unlimited

Precision casting: fusible

2: Minimum hole diameter

mim：0.4mm

Precision casting: 2mm

Maximum depth of 3: 2mm diameter blind hole

mim：20mm

Precision casting: 2mm

4: Minimum wall thickness

mim：＜1mm

Precision casting: 2mm

5: Maximum wall thickness

mim：10mm

Precision casting: unlimited

6: Small size internal and external thread

Mim: Yes

Precision casting: difficult

7:10 mm diameter tolerance

mim：±0.012mm

Precision casting: ± 0.05mm

8: Surface roughness (Ra)

mim：1~1.6 μ m

Precision casting: 3.2~5 μ m

9: Surface roughness

Mim: fine grain, uniform structure

Precision casting: dendrite, easy to segregate

10: Number of parts

Mim: unlimited

Precision casting: limited

To sum up, it is the contrast between mim metal injection molding and precision casting. I hope this article can help you understand powder metallurgy better. If you want to know more about the relevant products, please pay attention to the official website of zhongwei Precision.