碳纤维复合材料构件加工缺陷与高效加工对策  

Drilling Disfigurements Formation Analysis and Solution of CFRP

作　　者：鲍永杰[1] 高航[1] 

机构地区：[1]大连理工大学精密与特种加工教育部重点实验室,辽宁大连116024

出　　处：《材料工程》2009年第S2期254-259,共6页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(50875034)

摘　　要：碳纤维复合材料钻削加工时易产生分层、毛刺、撕裂等缺陷,是典型的难加工材料。本文以碳纤维增强/树脂基复合材料为研究对象,观察钻孔缺陷形成过程,建立单丝切削模型分析缺陷形成原因;讨论了轴向力对缺陷的影响规律。结论如下:纤维方向对缺陷形成有重要的影响,轴向力增大分层与撕裂缺陷相应增大;以磨代钻加工工艺、新型PCD刀具和螺旋面钻头对于提高碳纤维复合材料钻孔质量都有很大提高。Carbon Fiber Reinforced Plastics(CFRP)is typical difficult-to-machine material which will be easily brought on disfigurements such as burrs,delamination and avulsion while drilling.Carbon fiber/epoxy composite was taken as an object of study,and the disfigurement formation process was observed.For analyzing the reasons of disfigurement,the cutting model of single fiber was established,and the effect of thrust force on disfigurements was discussed.Some conclusions were gained as following:fiber direction has great influence on disfigurement formation;Delamination and avulsion get severe with the thrust force increases;the process of grinding for drilling,PCD tool and helical drill were proven to improve the quality of drilling CFRP.

关 键 词：碳纤维复合材料 钻孔 轴向力 缺陷 

分 类 号：TB332[一般工业技术—材料科学与工程]