About emery abrasive categories and methods of use

Metal cutting and abrasive surfaces Shuhei process of the main material . In actual production , the commonly used abrasives are synthetic diamond , corundum , silicon carbide, diatomaceous earth, pumice, quartz sand and so on.
Artificial corundum - with high hardness and toughness small ( compared to other abrasives ) is mainly used for rough grinding and polishing low strength metals ( such as pig iron , brass, bronze, etc. ) polished .
Corundum - There are two man-made and natural . The bauxite corundum Al2O3 content , the more the higher the hardness . Corundum is the use of better materials coarse grinding wheel , than artificial corundum toughness . Corundum particles are multi-faceted , sharp edges of particles than artificial corundum was blunt sharp edges . For polishing and tough and has a large breaking strength metals such as hardened steel , malleable iron, manganese bronze.
Emery - with medium hardness and excellent toughness , applicable to all metal polish .
Diatomaceous earth - with less sharp cutting surface and excellent toughness , repairable flat metal surface scratches and scratches and other defects. It is generic , polishing materials .
Quartz sand - particles with medium hardness , it is not a sharp cutting surface , and its toughness is also very good , the universal grinding and polishing materials .
Pumice - its hardness is poor , but also more crunchy , suitable grinding, polishing wood, leather , rubber, plastic and glass.
According to the above kinds of abrasive nature , summed up in the grinding hard metal products , to use artificial corundum , corundum or emery, then fine emery , pumice, finely ground quartz powder . The polished softer metal products , generally with diatomaceous earth and pumice .