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What Is MIM

Products of MIM

Advantages

Process Flow

Production Process

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Metal
Injection Molding

Metal Injection Molding

Metal injection molding (MIM) is a typical product of cross-disciplinary, integrating two different processing technologies (plastic injection mold and powder metallurgy). It makes designer get rid of tradition and gets low-cost and heterogenic stainless steel, nickel, iron, copper, titanium and other metal parts via plastic molding. Through this method, designer can have freedom of design.

Products of MIM

Consumer Electronics
Automobile Components
High-precision Medical Devices
Tools

  • Metallic CPU Fan

    Consumer Electronics Parts

    Metallic CPU Fan

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  • Fingerprint Deco

    Consumer Electronics Parts

    Fingerprint Deco

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  • Camera Bracket

    Camera Bracket

    Camera Bracket

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  • Headset Deco

    Consumer Electronics Parts

    Headset Deco

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  • Watch buckle

    Consumer Electronics Parts

    Watch buckle

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  • Sim Tray

    Consumer Electronics Parts

    Sim Tray

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Products of MIM

Consumer Electronics


  • Metallic CPU Fan

    Consumer Electronics Parts

  • Fingerprint Deco

    Consumer Electronics Parts

  • Camera Bracket

    Camera Bracket

  • Headset Deco

    Consumer Electronics Parts

  • Watch buckle

    Consumer Electronics Parts

  • Sim Tray

    Consumer Electronics Parts

Automobile Components


  • Vane

    HK30
    Automotive Turbocharger Parts

  • Rotor

    316L
    Car Remote Key Accessories

  • Excentric Sleeve

    17-4PH
    Automotive Exhaust System Parts

  • Metal Ring

    Fe2Ni
    Automobile Engine Piston Cooling Fuel Injection Nozzle

High-precision Medical Devices

Tools


  • Inserting Component of Textile Machinery

    316L
    Car Part

Advantages

MIM technology can provide the optimized cost solution of complex parts.

High Design Freedom

MIM technology can build more complex parts compared to other metal forming methods. Basically, all structures are achievable by injection molds can be applied to MIM.

Powerful MP Capability

MIM can be adjusted flexibly and it can also rapidly improve the yield, which varies from hundreds a day to hundreds of thousands a day.

Environmental Protection

The Utility of raw material used in MIM is close to 100%, which is a type of net forming technology, and can effectively avoid the waste of materials.

Excellent Precision

Generally, MIM can achieve accuracy tolerances ±0.5%. It can obtain an even higher dimensional accuracy once MIM works with other processing methods.

Delicate Appearance

The surface roughness of MIM sintering green parts (Ra) can achieve 1μm. It can be obtained dazzling appearance by various surface treatments.

Outstanding Performance

MIM physicochemical performance is also terrific because sintering density is highly close to the theoretical. For example, mechanical strength is significantly beyond traditional powder metallurgy.

More Material Options

Most of metal materials are functional in MIM, however, from economic perspective, applied materials mainly covers the iron-based, nickel, copper, titanium metal or alloy.

Thinning Trend

The most suitable wall thickness for MIM is no more than 6mm. Thicker outer wall is acceptable, but the cost will be increased due to the longer processing time and extra material used. In addition, ultra thin wall which less than 0.5mm is still possible to make, however, it requires strictly high standard for design.

Provide Support

Gian provides comprehensive services to maximize the value of MIM production. We not only help you to upgrade existing products in terms of design and material selection, but also assist you to complete a full product development. It includes but not limited to product design, technical analysis, rapid prototyping and laser scanning.

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Process Flow

01

Pre-sales Assessment

Gian pre-sales team will work closely with you to assess the feasibility for MIM production in terms of cost, material, or manufacturing. Gian will also advise how to change design for achieving the best effect through MIM.

02

Raw Materials

Under the condition of precisely controlled preparation, special metal powder (micron) mixed with high quality polymers in order to get MIM special feeding. Compared to traditional powder metallurgy, particle size of metal powder(micron)and low impurity content assure that MIM sintering density reaches a theoretical density of 98%. Besides, specially formulated multi-polymers are able to provide better liquidity during injecting and can also ensure efficient debinding ability.

03

Injection

MIM feedstock is heated and filled evenly into mold cavity by injection molding machines, then green components is generated after cooling down. Molds in accordance with the MIM characteristics and reasonable process pairing are the keys to this process.

04

Debinding & Sintering

In vacuum furnace or continuous furnace, frame binder can be removed. Metal powder will be densified and transformed into full metal body at the melting point, which are close to finished shape after colling down.

05

Restriking

The deformation in the sintering process can be improved to meet the specification through re-striking.

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Production Process

01

Feedstock Manufacturing

Gian has the competence to use dedicated device for MIM raw materials mix production. We can accurately mix batch powder and binder under controlled environment, and then maintain high quality and flexibility.

02

Molding

We use the most advanced and sophisticated injection equipment in the market. We believe that we can realize higher performance and production quality by using machine debugged by technicians. Gian updates injection equipments and achieve automation production.

03

Debinding & Sintering

Before sintering, Gian utilize a special debinding technology to remove binder, which is an environment friendly process and easy to monitor. Sintering process keeps running under the vacuum or high temperature. We can precisely control various alloy by using different gas. Our continual sintering furnaces can meet customers’ demand in the aspect of high productivity and efficiency.

04

Measurement & Laboratory

Gian has a modern and well-equipped metering department. Our acquired superior devices, like visual inspection system, 3D coordinate measuring machine, scanner and special instruments for arc, surface roughness, laser particle and metallographic, etc. Laboratory is responsible for the maintenance and calibration of all measuring instruments and frequently used measuring tools.

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