Research On Green Degree Evaluation System Of Superheated Water Vapor As Coolants And Lubricants

In 21st century, cutting as an important and widely used method of processing in manufacturing is facing new challenges, so the green cutting technique emerged. Because water vapor has many benefits such as cheapness, no pollution and no recycling and handling, it provides a new method for the green cutting technology. Practice has proven that a reasonable choice of coolant and lubricant can take advantage of its properties, save processing costs and reduce the environmental pollution, therefore, the study of the green degree evaluation of superheated water vapor as coolants and lubricants is of great significance.Firstly, to receive evaluation indicators data, analyzed current vapor feed system and to achieve energy efficiency and miniaturization requirements, eddy reheater for water vapor was developed.Secondly, use multi-level fuzzy comprehensive evaluation method from cutting performance, cost and environmental impact to evaluate water vapor as coolants and lubricants. The evaluation method is not only comprehensive account of all factors, but also retained the various factors of judgment information.Thirdly, under superheated water vapor supplied by vapor feed system composed by developed eddy reheater for water vapor, nitrogen, oxygen, argon and carbon dioxide as coolants and lubricants and dry cutting conditions, cutting experiments to 45 steel and Austenitic Stainless Steel 1Cr18Ni9Ti were done which cutting tool is respectively YT15 and YG6 and received water vapor as coolants and lubricants green degree evaluation indicators data.Lastly, evaluated the green degree of those six cutting conditions, using multi-level fuzzy comprehensive evaluation method and received conclusions as from favorable to the inferior the above six different cutting conditions were superheated water vapor, oxygen, argon, carbon dioxide, nitrogen and dry cutting when cutting 45 steel, however, when cutting 1Cr18Ni9Ti from favorable to the inferior the above six different cutting conditions were superheated water vapor, oxygen, argon, carbon dioxide, dry cutting and nitrogen.