Types and features of corundum abrasives
Corundum abrasives is artificial abrasives with Al2o3 as its main content.It includes white corundum abrasive,brown corundum abrasive and pink corundum and so on.Because corundum abrasives have advantages of high hardness,good wear resistance and good cutting ability,it is used widely in various industries.Of course,different corundum abrasive has its own features and used for different fields.
White corundum abrasives
White corundum abrasive is made from high purity aluminum oxide via smelt under high temperature.It appears white powder,with Al2O3 more than 99.4% and Mohs hardness 9.0.White corundum abrasives is suitable for grinding aluminum alloy, stainless steel,metal etc
Brown corundum abrasives
Brown corundum abrasives is also caleed brown aluminum oxide,brown emery sand etc,made mainly from bauxite.It appears brown powder,main chemical is Al2O3 too,which is about 95%.Brown corundum has lower hardness than white corundum,but has better toughness.Besides,brown corundum costs lower and it mainly is used for grinding and polishing normal metal etc.
Pink corundum abrasives
Pink corundum abrasives looks pink,very beautiful.It contains Al2O3 more than 98% and Cr2O3 0.2-2%.Because it posseses high strength,toughness and bulk density,the abrasive tools made from it has better cutting ability.
Besides, there are black corundum abrasives,zirconia corundum abrasives,single crystal corundum abrasives,ceramic corundum abrasives etc
In a summary,corundum abrasives are playing an important role is industrial production because of its perfect physical properties and chemical.
