Delrin, also known as Polyoxymethylene (POM), is a thermoplastic renowned for its high stiffness, low friction, and excellent dimensional stability, making it a preferred choice in CNC machining. This article will delve into the properties, machining considerations, and applications of Delrin in various industries.
Key Properties of Delrin
- Mechanical Strength: Delrin offers high tensile strength, stiffness, and resilience, making it suitable for rigorous applications.
- Wear Resistance: Its low friction and wear resistance make it ideal for creating parts where minimal resistance is crucial.
- Chemical Resistance: Delrin stands out for its resistance to a wide range of solvents, hydrocarbons, and neutral chemicals.
Machining Delrin: What to Consider
- Tooling: Utilizing sharp tools and adhering to appropriate speeds and feeds is vital to prevent melting during machining.
- Cooling: Effective cooling methods should be employed to minimize heat generation and ensure dimensional stability.
- Handling: Due to its sensitivity to moisture, proper storage and handling are crucial to maintain its properties.
Applications in Various Industries
- Automotive: Delrin is used for manufacturing gears, bearings, and other components due to its wear resistance and low friction.
- Medical: Its biocompatibility and ability to be sterilized make it suitable for surgical tools and medical devices.
- Consumer Electronics: Delrin’s insulating properties make it ideal for electrical components like switches, insulators, and gears.
Designing with Delrin in Mind
When designing for CNC machining with Delrin, considerations like maintaining uniform wall thickness, incorporating radii to reduce stress concentrations, and ensuring proper tolerances are vital to optimize the machining process and final product.