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What Materials Are Used for Rapid Injection Molding

Rapid prototyping can be done using different methods, including injection molding. Through rapid injection molding, you can produce plastic parts in higher volumes.

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What Materials Are Used for Rapid Injection Molding

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  1. What Materials Are Used for Rapid Injection Molding? Rapid prototyping can be done using different methods, including injection molding. Through rapid injection molding, you can produce plastic parts in higher volumes. It’s a manufacturing process that’s also versatile for low-volume production of up to 100,000 parts, too, and it ensures the precise creation of identical parts. Although commonly used with thermosetting polymers and thermoplastics, it can also include materials like glasses, confections, elastomers, and metals. The materials you use will depend on your project. The injection molding material will even be influenced by your tooling material. When considering tooling materials, remember the purpose of injection molding, and that is to make several identical plastic parts. So, the molds must be durable and capable of keeping up with your production process. Here’s an overview of the materials that can be used for the molds: Steel and aluminum Tool steel is a traditional choice for rapid injection molding, but aluminum is also a popular option. Other metals, such as nickel, may also be used by some manufacturers. Some companies may also offer stainless steel, which can deliver more than what aluminum molds can. That makes stainless steel molds practical and cost-effective for low-volume production, especially if you want more value for your money. Selecting a tooling material You have to consider factors, such as the type of plastic used for the parts, the volume of molded parts you need, the complexity or simplicity of the part design, and your budget. Mild plastics are typically better with aluminum or steel molds, and abrasive plastics may fare well with harder steel molds. Aluminum vs. steel Aluminum molds may be cost-effective for rapid injection molding, especially if you consider the many affordable grades of this metal. It can also be worked with additional processes, like CNC machining. However, if you need to create more parts, you must use steel. Stainless steel has a longer lifespan and resists abrasion.

  2. Consider the properties of the materials Think of the part’s purpose when deciding on a material forrapid injection molding. For instance, if it requires strength, then nylon, PEEK, or POM may be best for it. HIPS, PET, PMMA, and POM can ensure rigidity, and PVC, LDPE, or ABS can ensure flexibility, for example.

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