The grinding is a precise machining process, one of the most expensive steps in the manufacture of in-jection molds for thermoplastic. In grinding the grinding wheel abrasive tool is responsible for removal. The number and types of abrasive grit sizes available are quite large and together with the number of possible alloys, structures and shapes of hardness beyond cause reach an enormous number of products. The knowledge of their technical characteristics, advantages, defects and working conditions are fundamental for product engineers, process and of course to the industrial area managers, which identify the most suitable grinding wheel to perform the grinding process. Among the steels used in the manufacture of molds for ther-moplastic injection highlight the VP-50 steel, which was the steel used in this experiment being machined by the cylindrical grinding process. In the grinding process was also adopted for the purpose of experiment two methods of lubrication and cooling them with the conventional method with abundant lubrication and cooling and MQL is the technique with minimal amount of lubrication and cooling. The objective of this study was to analyze comparatively cutting performance, performed with three types of conventional wheels: grinding of white aluminum oxide, green silicon carbide grinding wheel and grinding of black silicon carbide with white aluminum oxide. The results were analyzed and compared by the output variables of the three types of wheels, type of refrigeration and equivalent thickness.
cylindrical grinding; minimum amount of lubricant; grindstone white aluminum oxide grinding wheel green silicon carbide; black silicon carbide grinding wheel with white aluminum oxide
