Ball Valve Metal injection molding (MIM) offers a manufacturing capability for producing complex shapes in large quantities.
The process utilizes fine metal powders which are custom formulated with a binder into a feedstock which is granulated and then fed into multiple cavities of a conventional injection molding machine.
After the “green” component is removed, most of the binder is extracted by thermal or solvent processing and the rest is removed as the Metal injection moldingcomponent is sintered (solid-state diffused) in a controlled atmosphere furnace.
The MIM process is very similar to plastic injection molding and high-pressure die casting, and it can produce much the same shapes and configuration features.
However, it is limited to relatively small, highly complex parts that otherwise would require extensive finish machining or assembly operations if made by any other metal forming process.
The advantages of the metal injection molding (MIM) process lie in its capability to produce mechanical properties nearly equivalent to wrought materials, while being a net-shape process technology with good dimensional tolerance control.
Metal injection molded parts offer a nearly unlimited shape and geometric-feature capability, with high production rates through the use of multi-cavity tooling.
Material: Stainless Steel
Process: Metal Injection Molding
Finish: Sand Blasting
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
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 Sints?
• 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.
sints is a leading one-stop supplier of Metal Injection Molding (MIM) in China, providing metal injection molded components to the consumer electronics, automotive parts, medical, aerospace and industrial sectors for over 12 years.
Our technical team have many years of experience in developing MIM.
We can work with you through all phases of project development – from the tooling design and build, to compounding the feedstock, through to the final sintering stage.
This tight control at all stages allows us to manage the consistency and dimensional repeatability of the parts we produce enabling us to supply components of high precision, complex shape, good mechanical properties and delicate appearance.
Sints strives to provide excellent solutions and service to our customers, by understanding and meeting your requirements.
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