Description

It is a kind of brown aluminum oxide abrasives treated with high temperature. Through calcinations, the foreign substances are vaporized or separated out of the abrasive, so the surface of abrasive is more pure and rough, the pro-water performance and strength are raised greatly as the abrasive crackles that engendered when breaking can be closed after calcinations. It is mainly used to manufacture high-speed intensity sand belts, top grade bonded abrasive tools, large scale incising wheels and giant grinding wheels. Bonded abrasives: F*4&#****9;F*0&#****9;F*6&#****9;F*6&#****9;F*4&#****9;F*0&#****9;F*0&#****9;F**0&#****9;F**0&#****9;F**0&#****9;F**0&#****9;F**0 Coated abrasives: P*4&#****9;P*0&#****9;P*6&#****9;P*0&#****9;P*0&#****9;P*0&#****9;P*0&#****9;P**0&#****9;P**0&#****9;P**0&#****9;P**0&#****9;P**0 There is a large difference for ball grinding toughness before and after calcination as below: Grit size Before calcination After calcination Increase rate&#****8;%&#****9; P*4 *7.*5 *9.*5 **7.8 P*0 *7.*5 *9.5 *7.7 P*6 *5.*5 *4.2 *5.7 P*0 *9.5 *3.5 *1.3 P*0 *8.8 *9.9 *3.3 P*0 *1.9 *2.8 *5.5 P*0 *4.*5 *9.*5 *3.2 P**0 *4.2 *7.*5 *5.0 P**0 *8.1 *2.5 *4.8 P**0 *1.*5 *6.8 7.8 P**0 *3 *5 *9.0 P**0 *1.4 *2.8 1.4