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How Metal Injection Molding is Revolutionizing Manufacturing

Metal injection molding (MIM) has become an increasingly popular method for manufacturing small, complex parts with intricate geometries. MIM offers numerous advantages over traditional metalworking processes, including cost savings, design flexibility, and faster production times. In this blog post, we will explore the benefits of metal injection molding and why it is quickly becoming the go-to method for small part manufacture.

What is Metal Injection Molding?

Metal injection molding is a manufacturing process that combines the benefits of plastic injection molding with powdered metallurgy. The process involves mixing metal powders, typically iron-based, or high-temperature alloys, with a plastic binder material to produce a feedstock. This feedstock is then injected into a mold, just like plastic injection molding, using a metal injection molding machine.

Once the molded part has cooled and solidified, it is placed in a debinding furnace to remove the binder material. The part is then sintered in a high-temperature furnace where the metal powders fuse together, forming a solid metal part. The final part can be finished using various techniques, including CNC machining or electroplating.

Advantages of Metal Injection Molding

1. Cost Savings: Metal injection molding is a cost-effective manufacturing method for small parts production. The process can achieve high levels of precision, reducing the need for costly secondary machining operations.

2. Design Flexibility: MIM offers design flexibility, allowing for the production of complex geometries with thin walls and high tolerances. This level of design freedom is not possible with traditional metalworking processes.

3. Faster Production Times: MIM allows for faster production times when compared to traditional metalworking processes such as casting. The quick turnaround time makes MIM an ideal choice for small production runs.

4. Higher Part Consistency: MIM produces parts with a high level of consistency, ensuring that each part produced is identical to the next. The process also offers the ability to produce parts with complex geometries that would not be possible with other manufacturing methods.

5. Wide Range of Materials: MIM can produce parts from a wide range of materials, including stainless steel, titanium, and tungsten. This wide range of materials makes MIM an ideal choice for manufacturing small parts in the aerospace, automotive, and medical industries.

Conclusion

Metal injection molding is a versatile manufacturing method that can be used to produce a wide range of small, complex parts with high levels of precision and quality. Its cost savings, design flexibility, and faster production times make it ideal for small production runs, while its ability to produce parts from a wide range of materials makes it an attractive choice for industries such as aerospace, automotive, and medical. As technology continues to improve, metal injection molding is sure to become even more popular in the years to come.

best metal injection molding

On-demand Rapid Injection Molding

Sigma’s rapid tooling service helps you to have the low volume to large volume plastic parts done, with no compromise on the material selection.

  • No MOQ required
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Our rapid injection molding Application

Sigma Technik Limited's rapid injection molding service injects molten plastic materials into molds using injection molding machines and molds, and cools and solidifies them over a certain period of time, ultimately forming the required plastic parts. This manufacturing process is usually suitable for producing small and medium-sized plastic parts, which can obtain high-quality and precise parts in a short period of time.

Plastic Injection Molding

Injection molding is a common manufacturing process to produce low volume to large volumes of parts typically made out of plastic. The process involves injecting molten material into a mold and letting it cool to a solid-state.

Liquid Silicone Rubber Molding

Liquid Silicone Rubber is known as LSR, which is a process used to produce parts made from silicone rubber, widely used create products such as medical devices, automotive parts, baby care products, and many others.

2K Injection molding

2K injection molding is a manufacturing process in which two different types of plastic materials are molded together in a single operation to create a single homogeneous component. This process allows for efficient and cost-effective production of high-quality parts that can perform unique functions.

Overmolding and Insert Molding

Overmolding / Insert molding combines two or more materials into a single part, one of the material is usually soft and flexible, or metal. The purpose of overmolding/insert molding is to add functionality, improve grip, provide protection, or enhance aesthetics.

Mission And Vision

Rapid injection molding materials

ABS

ABS is a type of plastic with high strength, hardness, and toughness. It has good impact resistance and wear resistance, and is suitable for manufacturing shells, components, and models.

PC

PC is a transparent, high-strength, high-temperature resistant, and excellent electrical insulation material. It is suitable for manufacturing transparent components, electronic components, and automotive components.

PP

PP is a relatively flexible material with excellent corrosion resistance and high temperature resistance. It is suitable for manufacturing containers, pipelines, baby bottles, etc.

PA

PA is a material with high strength, high rigidity, and wear resistance. It is suitable for manufacturing gears, bearings, brackets, etc.

POM

POM is a material with excellent wear resistance, toughness, and rigidity. It is suitable for manufacturing gears, bearings, pulleys, etc.

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About Us

What can we do?

Sigma Technik Limited, as a prototype production company and rapid manufacturer focusing on rapid prototyping and low volume production of plastic and metal parts, has advanced manufacturing technology, one-stop service, diversified manufacturing methods, on-demand manufacturing services and efficient manufacturing processes, which can provide customers with high-quality, efficient and customized product manufacturing services and help customers improve product quality and market competitiveness.

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Rapid Injection Molding Service Application

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Rapid Injection Molding FAQs

Burrs appear on the surface of the product, which affects its aesthetics and safety. The solution can be to adjust the parameters of the injection molding machine, such as temperature, pressure, speed, etc., or to perform post-processing, such as polishing, sandblasting, etc.

The warping deformation of the product is usually caused by unstable parameters such as temperature and pressure of the injection molding machine, or improper mold design. The solution can be to adjust parameters such as temperature and pressure, or to redesign the mold.

The occurrence of bubbles inside the product may be due to the high temperature of the injection molding machine and the high moisture content of the material. The solution can be to reduce the temperature of the injection molding machine, adjust the water content of the material, increase the pressure of the injection molding machine, etc.

The product size deviation is too large, which may be caused by material thermal expansion, mold deformation and other reasons. The solution can be to adjust parameters and optimize mold design based on material characteristics.