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Exploring the Top Materials for Cast Metal Injection Molding

Cast metal injection molding (MIM) is a manufacturing process that involves injecting molten metal into a mold to create complex shapes and components. This process is widely used in a variety of industries, including aerospace, automotive, medical devices, and electronics.

One critical factor in the success of cast metal injection molding is the selection of the right material. There are numerous options available, and each has its unique properties that must be considered. In this article, we’ll explore some of the top materials used for cast metal injection molding.

1. Stainless Steel

Stainless steel is a highly popular material used in cast metal injection molding due to its superior strength, durability, and corrosion resistance. It is commonly used in the manufacturing of medical devices, automotive components, and electronic parts. Additionally, stainless steel is an affordable option, making it ideal for high-volume production.

2. Titanium

Titanium is an excellent choice for cast metal injection molding due to its exceptional strength, resistance to high temperatures, and outstanding corrosion resistance. These properties make it well-suited for applications in the aerospace and defense industries. While titanium can be a more expensive option than other materials, its superior properties make it well worth the investment in many cases.

3. Inconel

Inconel is a family of superalloys known for their excellent strength and resistance to high temperatures. These alloys are widely used in the aerospace industry for critical components, such as turbine blades and exhaust systems. They offer excellent resistance to corrosion and oxidation, making them ideal for high-temperature and harsh environments.

4. Copper

Copper is another popular choice for cast metal injection molding due to its high thermal and electrical conductivity. These properties make it ideal for electrical components and heat exchangers. Additionally, copper is a highly affordable material, making it well-suited for high-volume production.

5. Aluminum

Aluminum is a lightweight, durable material that is often used in cast metal injection molding for automotive and aerospace components. It is highly corrosion-resistant and offers excellent thermal conductivity. It is also an affordable option, making it ideal for high-volume production.

In conclusion, the selection of the right material is critical for the success of any cast metal injection molding project. By understanding the unique properties of each material, manufacturers can make informed decisions to ensure the quality, efficiency, and cost-effectiveness of their products.

cast of metal used for injection molding

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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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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 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.