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INJECTION UNIT — Product Gallery
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Frequently Asked Questions
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What is an injection unit and what is its primary function?
An injection unit is a core component of an injection molding machine responsible for melting plastic material and injecting it under high pressure into a mold cavity. It controls the shot size, injection speed, and pressure to ensure consistent and accurate part production.
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What materials can be processed by the injection unit?
Injection units are designed to process a wide range of thermoplastic and thermosetting materials, including PP, PE, ABS, PC, PVC, nylon, and engineering-grade polymers, depending on the screw and barrel configuration.
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How do I choose the right injection unit size for my application?
Selecting the correct injection unit depends on factors such as the shot weight required, material viscosity, mold cavity volume, and required injection pressure. It is recommended to consult with a technical specialist to match the unit specifications to your production needs.
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What maintenance is required for the injection unit?
Regular maintenance includes cleaning the screw and barrel to prevent material degradation buildup, inspecting and replacing worn check rings or non-return valves, lubricating moving components, and verifying temperature sensor calibration to maintain process consistency.
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Can the injection unit be customized for special production requirements?
Yes, injection units can be configured with specialized screws (e.g., barrier screws, mixing screws), different L/D ratios, and various barrel coatings to suit specific materials or high-wear applications. Custom configurations are available upon request.
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What are the key performance indicators to monitor during injection unit operation?
Key parameters to monitor include melt temperature, injection pressure, back pressure, screw recovery time, shot weight consistency, and cushion position. Consistent monitoring of these values helps detect early signs of wear or process deviation, ensuring stable and high-quality output.