Aluminium oxide, Zirconia - artificial material-is produced on the basis of electrocorundum white with the addition of zirconium oxide. This material has a very high strength. He is able to handle the material with the clamping force is about 10 times bigger than a normal grinding wheel made of other materials. Rough and обдирочном the use of grinding circles of such material is very effective. Due to the slight heating of the workpiece machined surface not arise |