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CASTEM (SIAM) CO., LTD. / CASTEM (THAILAND) CO., LTD.
Lost Wax Precision Casting - MIM (Metal Injection Molding)

What is MIM (Metal Injection Molding)?


CASTEM's MIM technology has been independently researched and developed, and it's patented in the United States.
We can manufacture small products with complex shapes and thin walls that other companies cannot manufacture.

► Features of our MIM

Quantity Small to large lots (dozens to tens of thousands of pieces)
Shape Suitable for small products with difficult-to-cut shapes
Material Mainly stainless steel, but also alloy steel and tool steel.
Appearance Smooth finish below 3.2a
Strength High strength with density over 95%.

MIM

Excellent mechanical strength because its density reaches over 95% and its vacancies are spherical and independent.

Conventional Sintering

The body made by standard sintering has poor mechanical strength properties because its density reaches only 88% and its vacancies exist along the grain boundary irregularly.

It indicates properties similar to that of molten material such as torsion and spring. (The products in the photo are made of SUS304)

► Material / Tolerance

Classification

Material

Alloy Steel

SCM415(MIM), SNCM439(MIM)

Tool Steel

SKD11(MIM), SKH57(MIM)

Stainless Steel

SUS304L(MIM), SUS316L(MIM),
SUS420J2(MIM), SUS630(MIM)

 

Linear Tolerance(mm)

Dimensions

General

Over

To

-

10

±0.10

10

20

±0.15

20

50

±0.20

50

100

±0.30

100

-

±0.5%

► MIM Manufacturing Process

1. Feedstock preparation

 

2. Mixing

Combine metal powders with binders

3. Injection molding

Create molded body by injecting heated compounds into the inside of molds

 

 

4. Thermal debinding

Remove organic binder from the molded body

5. Sintering

Create high-density sintered body at a high temperature

6. Inspection

Inspect the quality according to various quality standards

▶Die Design and Manufacturing

▶Injection Molding

▶Dewaxing

▶Sintering

▶Inspection (Appearance, Dimensions)

► MIM Product Examples

 

Latest Update 06 May 2024