Research on Broaching Performance of Castor Oil Based Cutting Fluid with Additives.

In order to study the influences of green cutting fluid on broaching performance, pure water(W), castor oil, surfactant(s) and nano-graphite(G) were used to prepare three kinds of cutting through ultrasonic, namely water based oil cutting Hind (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 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, W-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 1 855 % 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.%, when compared with that under dry broaching conditions. [ABSTRACT FROM AUTHOR]