High Efficiency ELID Grinding of Garnet Ferrite

摘要

Hard and brittle material such as ferrite, optical glass and ceramics has been used in many fields andstill gains more attention. It is hard to machine and get good surface quality. Some parts of large batchproduction have large machining allowances and the machining efficiency is low with usual grinding method. Soit is of great importance to research the high efficiency grinding technology of hard and brittle material. In thispaper the cast iron bond diamond wheel and ELID (Electrolytic In-process Dressing) grinding technology areused on a surface grinder to research the high efficiency grinding technique. ELID grinding is used to precisiongrinding with fine abrasive wheel at previous. In this study, the feasibility of ELID grinding to high efficiencydeep cut has been researched. Garnet ferrite (YAG) has been machined both by the new method and by the resinbond diamond wheel. The grinding force of the cast iron bond diamond wheel is apparently smaller than the forceof the resin bond wheel. Under the same conditions, it is about 2/5～3/5 as the force using the resin bond diamondwheel. The result indicates that the grinding efficiency can be highly improved and the surface quality is ensuredby applying ELID grinding technology and adopting large grinding depth.