Metal Injection Molding (MIM) for Auto Parts

What is metal Injection Molding?
metal Injection Molding (MIM) is a development of the traditional powder metallurgy
(PM) and plastic injection molding process. MIM process is an advanced powder
processing technique because of net shaping with shape complexity at low processing
energy and 100 % material utilization.

The MIM Process
• Mixing – Blend fine metal powders with proprietary ingredients to create viscous
feedstock.
• Molding – Form complex shapes using standard injection molding tools and
equipment.
• Debinding – Prepare molded components for high temperature sintering.
• Sintering – Subject components to temperatures up to 1600°C to achieve up to
99% densification.
• Finishing – Add standard engineering detail as needed (e.g., plate, heat treat,
black oxide).

MIM Materials:
• Stainless Steels
– 304L, 316 L, 17-4 PH, 420, 440
• Low Alloy Steel
– 4605, 4105, 2200
• Titanium Alloys
–Ti, Ti-6Al-4V
• Soft Magnetic Alloys
– Fe-Si, Fe-Ni, Fe-Co
• Tungsten Alloys
– 95%W-Ni-Fe, 97%W-Ni-Fe

MIM Application:
Automotive Systems - Steering Columns (actuators, ignition lock components), Sun
Roofs (stop cams), Seating Mechanisms, Solenoids, Fuel Injectors
Orthodontics - Brackets, Buccal Tubes
Medical and Dental Instruments - Endoscopic Surgical Instruments
Firearm Components - Triggers, Sights, Safeties, Seer Blocks
Ordnance - Guidance Fins
Hardware and Lock Parts - Lock Cylinders, Bolts, and Sidebars
Computers and Electronics - Disk Drive Components
Electrical - Connectors, Switches

MIM Advantage:
The metal injection molding (MIM) process offers the following advantages:
Cost-effective manufacture of high volume complex parts
Reduced production time compared with investment casting
Net-shape manufacture with minimal material waste (runners, sprues recycable in-
house): more significant as materials costs rise
Mechanical properties superior to castings and other PM parts reflecting fine
particle size and high sintered density
Properties equivalent to wrought alloys
Wide range of pre-alloys and master alloys available
Minimum of finishing operations

Why FineMIM?
• Industry leader in engineering unique components for production.
• Fast development of alloys & new materials.
• Rapid and economical prototype development system.
• Continuous sintering suited for high volume production.
• Renowned metallurgical experts.
• Flexible processing addresses large and small parts.
• Resources available for the largest production requirements.

FineMIM® is a leading supplier of metal Injection Molding (MIM) in China. To learn
more about metal injection molding in China, please visit our website:
www.finemim.com

Minimum Order: 5000 pieces

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