抄録
In plastic metalworking, a lubricant is usually applied between the metal surface and the tool surface to reduce friction. The reduction in friction prevents seizing, improves the forming limit and decreases the energy that the process requires. Therefore the use of a lubricant is extremely important. Oil-based lubricants and phosphate coatings which have a high environmental load have mainly been used as conventional lubricants before and after the working process. However with the recent trend in environmental protection lubricants should be pollution-free materials. In this project we aim to develop and evaluate new lubricants based soap and detergents. These materials are good lubricants and have little environmental load. The performance of the new lubricants was evaluated by the Erichsen test and cold bar drawing. The results of the experiments and elastic-plastic FEA were compared to determine the coefficient of Coulomb friction. It was clarified that an appropriate mixture of soap and a mild detergent is superior to lubricants on the market. In particular, the soap-based lubricant mixed with washing powder shows excellent performance. In addition, these lubricants are easily removed by water. Guidelines for the development of environmentally friendly lubricants and the application of such lubricants to metalworking were obtained.
