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The Advantages of Using Metal Inserts for Injection Molding.

Injection molding has revolutionized manufacturing processes, allowing for the mass production of complex, high-quality parts. Over time, this technology has continued to evolve, with new materials and techniques being developed to further improve efficiency and quality. Metal inserts are one such development that has become increasingly popular in recent years. In this blog post, we will explore the numerous advantages of using metal inserts in injection molding.

What are Metal Inserts?

In injection molding, metal inserts are pieces of metal that are inserted into a mold before the plastic is injected. Once the plastic cools and solidifies, the metal becomes permanently bonded to the plastic part. This can provide numerous benefits over other methods of joining metal and plastic, such as post-molding assembly or overmolding.

Metal inserts can be made from a variety of metals, including brass, stainless steel, aluminum, and titanium. The choice of metal will depend on the application and the requirements for strength, durability, and corrosion resistance.

Advantages of Metal Inserts

1. Improved Strength and Durability:\

One of the biggest advantages of using metal inserts is the added strength and durability that they provide to plastic parts. With metal inserts, parts can withstand higher stress, impact, and load-bearing requirements than with plastic alone. This is especially important in applications where safety is a critical concern.

2. Precision and Consistency:\

Metal inserts can also improve the precision and consistency of injection molding. Metal inserts can be machined to very tight tolerances, ensuring a perfect fit every time. This can eliminate the need for costly post-molding assembly processes and reduce waste caused by ill-fitting parts.

3. Corrosion and Wear Resistance:\

Certain metals are highly resistant to corrosion and wear, making them ideal for use in harsh environments. By using metal inserts in injection molding, parts can be made more resilient and long-lasting, even in corrosive or abrasive settings.

4. Multi-Material Capabilities:\

Metal inserts can also open up a world of possibilities for multi-material injection molding. By using different metals for different parts of a single part, manufacturers can create highly specialized components that would be difficult or impossible to produce with other methods.

Conclusion

The advantages of using metal inserts in injection molding cannot be overstated. From improved strength and durability to precision and resistance to wear, there are many reasons why metal inserts are becoming an increasingly popular choice for manufacturers. By incorporating metal inserts into their processes, manufacturers can achieve higher levels of efficiency, quality, and innovation.

injection molding metal inserts

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.

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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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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 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.