Essai Industrie Co., Ltd.

Why Choose Metal Injection Molding?

What is Metal Injection Molding?


Metal Injection Molding, abbreviated as MIM, is a method that mixes metal powder and binders for injection molding.


Characteristics of the Metal Injection Molding Process


Fine Powder:


  • Powder particle size D90 less than 40um

  • Narrow particle size distribution


High Volume Ratio of Binder:


  • Binder volume ratio up to 45%

  • Multiple binder systems of metal injection molding to meet different molding characteristics requirements

  • Feedstock, made by mixing metal powder and binder


High Rate Molding:


  • High mold accuracy

  • Equipped with specialized injection molding machines


Sintering Technology:


  • Solid phase sintering or liquid phase sintering

  • Different types of sintering equipment 

  • Metal phase diagrams

  • Materials science knowledge


Advantages of Metal Injection Molding


  • Ability to produce complex-shaped parts

  • Parts produced have characteristics of high precision and high density

  • Allows for mass production with high production efficiency

  • High raw material utilization

  • Wide material applicability


Characteristics of Metal Parts Suitable for Metal Injection Molding Process


Metal materials with a high melting point


Above 1100℃, such as iron, nickel, titanium, cobalt, copper, tungsten, and molybdenum-based alloys


Materials that are difficult to machine


Parts with complex structural designs that are hard to produce using stamping, precision punching, cold heading, machining, or traditional powder metallurgy


Structural or micro features that are hard to achieve by casting


Dimensional accuracy can be achieved using standard injection molds and MIM processes; secondary processing can be used if necessary to meet the linear dimensional tolerance of the M class as per GB1804-2011.


High surface appearance requirements; MIM parts generally achieve a surface roughness of Ra3.2um, with subsequent treatment possible


Steps of Metal Injection Molding


  • Mixing selected powder with binder

  • Depositing and injection molding the mixture into the desired shape

  • Removing the binder through debinding and sintering processes

  • Post-molding treatments such as surface treatment, heat treatment, and machining


Reasons to Choose Essai for Metal Injection Molding


As one of the professional metal injection molding suppliers, Essai offers products with superior performance and quality. Essai's metal injection molding China products are widely used in consumer electronics, automotive parts, medical devices, power tools, industrial equipment, and household products. In the future, Essai will continue to strive to provide better metal injection molding China products for its customers.

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