High Temperature Treated BFA

High temperature calcined brown fused alumina is formed by high temperature and medium temperature calcined abrasives in the production process of raw brown fused alumina, and then annealed.

Description of High Temperature Treated BFA

Bulk Density of Brown Fused Alumina

Grit	Bulk density (g/cm3)	Grit	Bulk density (g/cm3)
F12		F54
F14		F60
F16		F70
F20		F80
F22		F90
F24		F100
F30		F120
F36		F150
F40		F180
F46		F220

Particle Size Distribution of Brown Fused Alumina (P12-P220) for Coated Abrasives

Grit	Particles Sizes Distribution						Magnetic Materials Content (%)
	Special Coarse Size	Most Coarse Size	Coarse Size	Basic Size	Blend Size	Fine Size
P12	6#	8#	12	45	85	/
	0	≤1	11	46	83	/
P16	8#	12#
	0	≤3
P20	12#	16#
	0	≤7
P24	14#	18#
	0	≤1
P30	16#	20#
	0	≤1
P36	18#	25#
	0	≤1
P40	25#	35#
	0	≤7
P50	30#	40#
	0	≤3
P60	35#	45#
	0	≤1
P80	45#	60#
	0	≤3
P100	50#	70#
	0	≤1
P120	70#	100#
	0	≤7
P150	80#	120#
	0	≤3
P180	100#	140#
	0	≤2
P220	120#	170#
	0	≤2

Typical Physical Properties of High Temperature Treated BFA

Eliminate Abnormal Expansion

Calcination of brown fused alumina will produce abnormal expansion, which will lead to grid cracks on its surface, while calcination can eliminate abnormal expansion and reduce the formation of waste.

Improve Toughness And Grinding Performance

The calcined brown fused aluminium oxidehas a hard reaction inside, the compressive strength is enhanced, and the durability and sharpness are greatly improved.

Improve Hydrophilicity

The hydrophilic performance of the calcined brown fused alumina is more than doubled.

Improve Strength of Abrasive Tool

The specific surface area of the brown fused alumina particles after high temperature calcination is greatly increased, so the abrasive and the cloth base are much stronger.

Improved Durability

The durability of calcined brown fused alumina is more than 40% higher than that of ordinary brown fused alumina.

Improve Appearance And Cutting Ability

After the brown fused alumina is calcined, the magnetic substance inside is reduced, reducing the probability of rust spots on the surface.

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