The Detailed Description Of SEPPE Calcined Brown Fused Alumina

SEPPE Calcined Brown Fused Alumina is calcined at the high temperature, and with the anneal treatment. Calcined with High Temperature Treatment Brown Fused Alumina is characterized by very low coefficient of linear expansion, very good hydrophilicity, good toughness and high hardness, producing the sintered grinding tools that is characterized by deep blue color after firing, without resillage, without rust and so on. 

After 800 ℃-1350 ℃ calcination, hydrophily of abrasive grain has been enhanced 3.5 times than before, which mainly because volatiles on abrasive grain surface and other impurities are cleared, the low-melting materials are burned, the capillary phenomenon on abrasive surface increases. Without the volatiles and impurities, purity and cleanliness of abrasive grain has been improved. Thus, during the process of abrasive tools manufacturing, abrasive grains and binding agent can be bonded easily, which improve the abrasives tools strength for 30% durability. After calcined, the abrasive grains contain iron expand crack, magnetic materials can be removed easily, therefore no rust spots appear on appearance of abrasives and grinding ability will be better. Better accuracy and grinding effect during processing , Calcined Brown Fused Alumina is suitable for producing high level abrasives products.