摘要
碳纤维增强复合材料(Carbon fiber reinforced polymer,CFRP)因其优异的性能在航空航天领域得到广泛应用。因其非均质性、各向异性以及较高的温度敏感性,在机械加工中容易发生不可逆的损伤。通过对T800/X850高强度碳纤维复合材料层合板进行干燥和低温条件下的铣削试验,探究了超临界二氧化碳低温冷却方法应用于CFRP复合材料机械加工的可行性。研究结果表明,低温切削相比于干切可以显著降低切削温度,提高表面质量;低温切削条件下的切削弯矩相比于干切会有一定提高;高转速、小进给、低温冷却的组合,有助于提高CFRP层合板的加工质量和加工效率。
Carbon fiber reinforced polymer(CFRP)has been widely used in aerospace field because of its excellent material performance.Because of its heterogeneity,anisotropy and high temperature-sensitivity,machining defects is prone to occur.In this work,the milling experiments of T800/X850 carbon fiber composite laminates,which are commonly used in aviation industry,were carried out to investigate the feasibility of supercritical carbon dioxide based cryogenic cooling method in CFRP composites machining.The results show that cryogenic environment can significantly reduce the cutting temperature and improve the surface quality compared with dry environment.Meanwhile,the bending moment of cutting process under cryogenic environment is higher than that under dry environment.The combination of high cutting speed,low feed rate and cryogenic environment is helpful to improve the machining quality and efficiency of CFRP composite.
作者
邹凡
王贤锋
张烘州
安庆龙
ZOU Fan;WANG Xianfeng;ZHANG Hongzhou;AN Qinglong(Shanghai Jiao Tong University,Shanghai 200240,China;COMAC Shanghai Aircraft Manufacturing Co.,Ltd.,Shanghai 200436,China)
出处
《航空制造技术》
CSCD
北大核心
2021年第19期14-19,共6页
Aeronautical Manufacturing Technology
基金
上海市工业强基项目(GYQJ–2019–1–31)。
关键词
碳纤维增强复合材料
超临界二氧化碳
低温铣削
切削温度
切削弯矩
Carbon fiber reinforced polymer(CFRP)
Supercritical carbon dioxide(scCO2)
Cryogenic milling
Cutting temperature
Bending moment