L’oxyde d’aluminium brun est fondu électriquement dans un four à arc à partir d’un mélange de bauxite à haute température. Il a une couleur brune, une dureté élevée et une grande ténacité. Les outils abrasifs en oxyde d’aluminium brun conviennent au meulage de l’acier au carbone, de l’acier allié normal, de la fonte malléable et du bronze dur. Il est utilisé pour le mélange de revêtement d’oxyde d’aluminium réfractaire, le coulage de matériaux moulables, etc.
Qualité des abrasifs :
| TAILLE | AL2O3 MIN | SIO2 MAX | TIO2 MAX | Fe2O3 MAX |
| 12#-80# | 94,5-97% | 0,6-0,8% | 1,5-3% | 0,12-0,2% |
| 100#-180# | 93,5% | 0,7-1% | 1,5-3,8% | 0,15-0,25% |
| 240#-280# | 92% | 0,85-1,1% | 1,5-3,8% | 0,18-0,35% |
Applications typiques :
- applications collées ou revêtues
- finition ou préparation de surface
- élimination du revêtement ou du tartre
- polissage
- surfaces antidérapantes
Convient à ces matériaux :
- acier ferreux ou allié normal
- céramique
- plastique
- pierre
- verre
- bois
- caoutchouc
- matériaux composites
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