含添加剂蓖麻油切削液的拉削加工性能研究

摘要/Abstract

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%。

关键词: 绿色切削液, 蓖麻油, 活化剂, 纳米石墨, 拉削加工

Abstract: 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.

Key words: green cutting fluid, castor oil, surfactant, nano-graphite, broaching

中图分类号:

TH17

倪敬;刘晓帆;何利华;蒙臻. 含添加剂蓖麻油切削液的拉削加工性能研究[J]. 中国机械工程.

NI Jing;LIU Xiaofan;HE Lihua;MENG Zhen. Research on Broaching Performance of Castor Oil Based Cutting Fluid with Additives[J]. China Mechanical Engineering.

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