When quoting for a part of this nature, we would allow for the machinists to skim both layers of skin off, without taking the part to finish size, allowing it to warp and then re-machining both faces, thus heavily reducing the warping. When received as raw material, PEEK, similar to other engineering plastics will have a skin on both sides. When this skin is removed it is very common, especially on large billets with a lot of material being removed, for warping or distortion to occur, usually in the form of the material bowing inwards. We use our PEEK machining experience to deliver the most cost effective method of manufacture. Here at Penta Precision, we are able to source PEEK competitively due to the high volume of PEEK components we manufacture offering you the very best value for money. However, it is 10-20 times the price of other common engineering plastics. PEEK is 53% harder than Acetal, has 63% greater tensile strength and is nearly 60% stiffer than Nylon 6. Industry Examples: Aerospace | Electronics | Military & defence | Medical | Chemical | Oil & gas | Food & packaging | Automotive Typical Components & Applications: Valves | Seals | Connectors | Surgical instruments | Medical implants | Bearings | Bushings | Washers | Blocks | Insulation | Scraper blades See the 'Finishing & Treatments' section for specific treatments to reduce the chances of stress affecting machining. This can be combatted by machining practices such as using very sharp tools, making sure we are using the right speeds and feeds, and being aware of how clamping/fixturing can affect the part. PEEK (Polyaryletheretherketone) is a rigid opaque (beige) engineering plastic known for its ability to operate at high temperatures, together with its exceptional chemical and wear resistance and dimensional stability.Ī high purity polymer, PEEK is a plastic composed of repeating monomers of two ether groups and a ketone group.Īlthough PEEK is very stable compared to most engineering plastics, stress in the material can have a major impact on machining causing such problems as: PEEK Guide: Properties, Applications and Design Considerations
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