Experiment Study With Oils On Water (OoW) As Coolants And Lubricants In Green Cutting

In the machining process, cutting fluid is usually used to reduce cutting force, lower cutting temperature, extend tool life and enhance machining efficiency and surface finish quality during machining. However, conventional cutting fluid also have bad effect on environmental,health problem and the increase of production costs. The current attention to the environmental impacts of machining processes by governmental regulations has been forcing manufacturers to reduce or eliminate the amount of wastes. Therefore, more and more new green cutting method has become focus of attention in manufacture field in the 21th century. The investigation of pollution-free and eco-friendly green cutting technique has been predominant emphasis in each country. Because Oils on water (OoW) cutting fluid is cheap, pollution-free, eco-friendly and no recovery, the cutting technology that OoW cutting fluid is used as coolants and lubricants is a new green cutting technique. According above, we issued a study on action mechanism and experiments with OoW as coolant and lubricant in green cutting, which is a frontier project in the world. Some researching results of theory significance and application value have been drawn.Based on reviewing the developing of green cutting technique in the world, the present research status & application value of OoW, and the study source was explained. In this paper, the investigation of the formation mechanism and method is explained with OoW cutting fluid, and experimental study of its formation effect.The cutting research has been carried out by using Oils on Water(OoW) spray device, and analyzed the cooling and lubrication effect of OoW cutting fluid, and the effect on improve the quality of surface machining characteristics from different spray angles.The experiments was studied with OoW cutting fluid under different spray angles and different spray pressure, and using 45 carbon structural steel and 1Cr18Ni9Ti stainless steel as experiments material. The experiments results showed: with OoW as coolants and lubricants, the main cutting force,the path force and the feed force with are lower than cutting force using dry cutting method and oil water emulsion cutting method. And the effect on reduce cutting force was more obvious when OoW cutting fluid spray at flank face. Cutting fluid cooling effect can effectively cutting away the heat and reduce cutting temperature. So it can improve the tool life. In the experiment studied of tool life, the tool life, using Oils on Water(OoW) cutting fluid spray direction at flank face, is 1.57 times,1.46 times compared to the tool life using dry cutting method and oil water emulsion cutting method when cutting 45 carbon steel process; and is 1.54 times,1.14 times compared to the tool life using dry cutting method and oil water emulsion cutting method when cutting 1Cr18Ni9Ti stainless steel process. On the experiments studied of surface finish, Oils on Water (OoW) cutting fluid can also effective reduce surface roughness compared to dry cutting method and oil water emulsion method, therefore, surface quality was improved.In the cutting experiments studied by change Oils on Water(OoW) cutting fluid spray pressure, it is also found that the effect on reduce cutting force,extend tool life and surface quality was obvious when compress air pressure at 2.0MPa,water and biodegradable oil injection pressure at 0.8MPa and 0.5MPa.However, the effect of OoW cutting fluid was not so good with low pressure.