摘要
为研究绿色切削液对拉削加工性能的影响,采用超声搅拌纯净水(W)、蓖麻油(O)、活化剂(S)和纳米石墨(G)制成了不同配比的油水(W-O)、油水活化剂(WO-S)和油水活化剂石墨(WOS-G)三类切削液,并进行了雾化喷射拉削试验。试验结果表明:蓖麻油和活化剂的加入,有利于减小拉削负载,而纳米石墨的加入,在蓖麻油和活化剂作用下会发生“团簇”效应,增大摩擦因数,不利于减小拉削负载;经对比,含水88.5%、蓖麻油10%和活化剂1.5%(均为质量分数)的WO-S切削液的应用效果最好,与干拉削相比,拉削负载的高值和低值分别减小了17.0%和18.5%,基频幅值减小了10.6%,前5个刀齿的平均粘屑数量减少了35.8%,而全部刀齿的平均粘屑数量减少了23.0%。
In order to study the influences of green cutting fluid on broaching performance,pure water(W),castor oil(O),surfactant(S)and nano-graphite(G)were used to prepare three kinds of cutting fluid through ultrasonic stirring,namely water based oil cutting fluid(W-O),water based oil cutting fluid with surfactant(WO-S),water based oil cutting fluid with surfactant and nano-graphite(WOS-G).Then the broaching tests were carried out under spraying.The testing results show that the addition of castor oil and surfactant may reduce the broaching loads.But the addition of nano-graphite is not conductive to reducing the broaching loads,due to the agglomeration effect with castor oil and surfactant,and the friction factor of cutting fluid is increased.By contrast,WO-S cutting fluid with 88.5%pure water,10%castor oil and 1.5%surfactant(all are mass fractions)has the best application performance.The broaching loads of high and low values are reduced by 17.0%and 18.5%respectively,and the amplitude of the fundamental frequency is decreased by 10.6%.The average amount of chip adhesion in first five cutters is reduced by 35.8%,and that in total cutters is reduced by 23.0%,when compared with that under dry broaching conditions.
作者
倪敬
刘晓帆
何利华
蒙臻
NI Jing;LIU Xiaofan;HE Lihua;MENG Zhen(College of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou,310018)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2019年第23期2849-2856,共8页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51775153)
