As a metal forming process, metal Injection Molding (MIM) combines the material flexibility of powder metallurgy and the design flexibility of plastic molding. With properties comparable, or better than, those of wrought steel, the MIM process is ideally suited to producing small and complex-shaped parts with outstanding mechanical properties.

In addition to cost-effective, high-volume production, other MIM benefits include:

• Complex geometries
• Close porosity
• Excellent surface finish
• High performance
• High final density (93-99%)

Process

1. FEEDSTOCK. The metal powder is mixed with thermoplastic binders to produce
a homogeneous feedstock; with approximately 60 volume % metal powder and
40 volume % binders.

2. INJECTION MOLDING. The feedstock is placed into an injection molder and
molded to form a net shape green part. Injection molding occurs at relatively low temperatures and pressures inconventional plastic injection molding machines. The molds are similar to those used for plastic injection molding including slides and multi-cavity configurations.

3. DEBINDING. After injection molding , the binder is removed from the green part via an evaporative process called “debinding”.

4. SINTERING. After debinding the part is sintered to form a high-density metal part.Sintering occurs at high temperatures, up to 1260 °C (2300 °F), near the melting point of the metal; under a dry H2 atmosphere or inert gas atmosphere. During sintering, the part will shrink isotropically to form a dense shape. Since, the complex shape of the molded part is retained through the process, close tolerances in the as-sintered part can be achieved. Scrap is eliminated or significantly reduced since machining of the part after sintering is usually not necessary. Certainly, the sintered part can be processed with heat treatment, machining or other means to achieve some special performance.

metal powder injection molding product series

1. The computer and auxiliary facilities, such as printer parts, head, magnetic cores, firing pin shaft pins, driving parts

2. Tools: such as electrician tools, hand tools, such as all kinds of locks and components

3. Household appliances: such as atlas, bracelet, golf ball head, fish to fall, metal structure, camera parts, etc

4. Medical devices use parts: such as organization sampling grips, connecting rod, tooth orthopaedic frame etc

5. Communications equipment parts: such as base, etc

6. Electrical parts: miniature motor, electronic parts, sensor pieces etc

7. The mechanical parts: such as pine cotton machine, m., crimping machine, office equipment, etc

8. Car shipping parts: such as clutch inner loop, rocker set pieces, fork sets, valve catheter, etc

If you want us to produce your spare parts,pls kindly provide us the following information:

1.2D&3D drawings

2.the materials,surface treatment,and the hardness requirements

3,the quantities you want

4.the usage

5.any other requirements if you have any.