Material Analysis
11 조회수
PTFE Cracking and Fracture
문제 현상
PTFE parts develop cracks or fractures, structural integrity is lost, and failure risk under load increases.
원인 분석
Rapid cooling after sintering generates internal stress; mechanical stress overload during machining or handling; too high content of fillers such as glass fiber, carbon fiber, and bronze makes the material brittle; dropping or bending causes cracks in the semi-crystalline structure.
해결 방법
①Anneal after sintering to release internal stress; ②Handle carefully during post-processing and transportation; ③Optimize filler content and type to maintain toughness; ④Use appropriate tooling for machining to avoid excessive cutting force.
핵심 요약
PTFE cracking requires cooling management, filler balance, and handling protection together; filler reinforcement and toughness trade off against each other; machining force control is a detail.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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