POM 아세탈(폴리옥시메틸렌) — CNC 가공용 플라스틱 종합 가이드

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This pom acetal polyoxymethylene guide explains practical material, design, manufacturing, and sourcing considerations for Nylon Plastic readers.

POM 아세탈, 델린(Delrin) 소재의 CNC 가공 기어 및 정밀 부품 - Nylonplastic CNC 가공 서비스

POM acetal rods, gears and machined stock in a CNC plastics workshop
POM 아세탈(폴리옥시메틸렌) — CNC 가공용 플라스틱 종합 가이드

POM 아세탈 플라스틱이란 무엇인가요?

POM acetal CNC machining line with polymer pellets and finished precision components
전문 산업용 사진: POM 아세탈(폴리옥시메틸렌), 제조

POM(폴리옥시메틸렌)은 아세탈 또는 델린(Delrin)이라고도 불리며, 결정성이 매우 높은 공업용 열가소성 수지입니다. 높은 강성, 낮은 마찰계수, 뛰어난 치수 안정성을 겸비하고 있어 정밀 기계 부품에 이상적입니다.

POM의 주요 특성

  • 인장 강도: 60–70 MPa
  • 굽힘 탄성 계수: 2,500–2,800 MPa
  • 융점: 165–175°C
  • 마찰 계수: 0.2–0.35

CNC 가공 모범 사례

날카로운 초경 공구를 사용하고, 선삭 시 절삭 속도를 150–250 m/min으로 설정하며, 에어 블라스트 또는 플러드 냉각수를 사용하십시오.

일반적인 애플리케이션

기어, 스프로킷, 베어링, 부싱, 가이드 레일, 식품 가공 장비 및 의료 기기 부품.

POM CNC Machining: What the Shop Must Control

POM is easy to machine compared with many reinforced engineering plastics, but it still needs a controlled process. The stock should be supported evenly, the workholding should not crush thin sections, and the tool path should remove heat instead of rubbing the polymer. A part that measures correctly while clamped can move after release if the stock or fixture has stored stress.

Control point Why it matters Useful RFQ evidence
Stock and grade Different POM grades can vary in stiffness, friction, color and dimensional behavior Grade, certificate, stock size and lot traceability
공작물 고정 Uneven clamp force can distort thin walls and bores Fixture concept, datum plan and relaxed-part inspection method
Cutting strategy Rubbing and trapped chips can raise heat and damage the surface Tool material, chip evacuation and critical surface requirement
Inspection condition Temperature and release state can change the measured result Inspection temperature, datum scheme and critical dimensions

For a production decision, compare CNC-machined POM with molded POM, unfilled PA, PA-GF20 and PA-CF30 only against the actual duty cycle. POM is often attractive for low-friction parts, while reinforced nylon may be better when stiffness, wear or temperature response dominates. A material substitution should be validated with the mating component and service environment.

Prototype-to-Production Questions

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자주 묻는 질문

When is POM acetal a good choice for a CNC-machined plastic part?

POM is useful when low friction, good stiffness, wear resistance and dimensional stability are more important than high temperature or long-term moisture resistance. Confirm the load, speed and chemical environment first.

What should be checked before choosing POM for CNC machining?

Check part size, wall thickness, tolerance, surface finish, heat exposure, load direction, friction, chemical contact and whether the design will remain machined or later move to injection molding.

How should POM be held during machining?

Use even support and moderate clamping force. Excessive local pressure can distort the stock and the part can move when released, so critical dimensions should be inspected after the part has relaxed.

What affects the cost of POM CNC machining?

Cost depends on stock size, material grade, number of setups, tool access, tolerances, surface finish, inspection and quantity. Standard tools and relaxed non-critical tolerances usually reduce cost.

Can POM be replaced by nylon or PA-GF20?

Sometimes, but the replacement changes friction, moisture response, stiffness, wear and dimensional behavior. Compare the application data rather than substituting by name alone; PA-GF20 may improve stiffness but can change anisotropy and surface behavior.

Request a POM CNC Machining Review

Send the CAD file, drawing, POM grade preference, tolerances, operating environment, quantity and inspection requirements for a machining review.

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