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2019 hotsales fused alumina zirconia for bonded abrasives

Fused zirconia alumina is produced by putting rich aluminum, zirconium materials and additives in electric furnace, smelting with high temperature above 2000°C,cooling down with special technology, and compacting with Barmac plastic, which has the characteristics of tenacious texture, dense structure and high strength.

It takes the advantages of high strength, high toughness, high temperature resistance, which can manufacture heavy-duty wheel with high performance, and has achieved very good results in grinding steel, cast iron, heat-resistant alloy steel, titanium alloys, aluminum alloys and austenitic alloy steel. And it is widely used in the production of refractoriness in the steel industry such as continuous casting and rolling, flow channel, and zirconia brick as well.

It is classified into ZA 25 and ZA 40 as the content of Zr02.

AZF25/40 Fused Alumina Zirconia for Bonded Abrasives
product	Al2O3	ZrO2	TiO2	Fe2O3	SiO2
ZA25	68%-72%	24%-30%	1.5%max	0.5%max	1.0%max
ZA40	55%-57%	35%-44%	1.5%max	0.5%max	1.0%max

Physical Characteristics

2016 hotsales fused alumina zirconia for bonded abrasives
Crystal form	a-Al2O3+Al2O3-ZrO2
Reaction with acid and alkali	No
Color	Gray
True density	4.55g/cm3
Bulk density	2.18g/cm3
Mohs hardness	9.0
Knoop hardness	1450-2000kg/cm2
Meltingpoint	1900°C
Maximumservice temperature	1700°C
Specific heat capacity(cal/g. °C)	0.2205(50-500°C)
Heat conductivity	0.2718 cal/cm2.sec. °C
Linear expansivity(X10-6)	6.82(100-700°C)