The early 1980s on the successful development of a new type of abrasive

Microcrystalline alumina ceramic sand abrasive technology appraisal was held in four, the project passed the technical appraisal. Microcrystalline alumina ceramic abrasive is an American Norton & Company and 3M Company in the early 1980s on the successful  synthetic diamond  of a new type of abrasive, which uses a special process and raw materials, with sub-micron microcrystalline structure, which has toughness,  abrasive wheels , good self-sharpening, etc., in high-grade abrasive and coated abrasives aspect was widely used. As the product with excellent performance, expensive,  abrasive grinding turers has taken security measures, and thus in a very long time, the domestic only know this abrasive, but has been unable to get the sample studied.