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Zirconia Fused Alumina

  • Zirconia Fused Alumina
  • Zirconia Fused Alumina
  • Zirconia Fused Alumina
  • Zirconia Fused Alumina
Zirconia Fused Alumina Zirconia Fused Alumina Zirconia Fused Alumina Zirconia Fused Alumina

Zirconia Fused Alumina

Description:

Zirconia fused alumina is produced by putting rich aluminum, zirconium materials and additives in electric furances, 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.

Characteristic:

l  Higher roughness than alumina without Zirconium.

l  40%ZrO2 Zirconia has better self-sharpening ability, abrasive tools like cutting disc and grinding wheel would be sharper and more durable.

l  25%ZrO2 Zirconia is more Suitable for making heavy duty grinding disc which works good for heat-resistant alloy steel, titanium alloy and austenitic stainless steel.

Application

1.     Making zircon fused alumina brick and building materials.

2.     Used for making bonded abrasives products,and process of grinding,sandblasting,surface treatment of metal products and other materials.

3.     With good melt erosion resistance,Zirconia fused alumina has good grinding effect on steel,iron casting,heat resistant steel and other alloy materials.

4.     Fused zirconia can be made for heavy duty grinding wheel,snagging,cutting disc,Fiber disc,grinding rails,high speed abrasive belts etc.

5.     Used for making coated abrasives products.

6.     Used for making lapping paste,polishing wax,emery cloth,sandpaper etc.

 

Chemical   composition

Item

ZA25

ZA40

AL2O3

68-72%

55-57%

ZrO2

24-30%

35-44%

TiO2

Max 1.5%

Max 1.5%

Fe2O3

Max 0.5%

Max 0.5%

SiO2

Max 1.0%

Max 1.0%

 Typical physical properties

Particle   shape

monoclinical   tetragonal

Chemical   property

Amphoteric

Reaction with   acid and alkali

No

Reaction with   carbon

Forming   carbide since 1650 ℃

Crystal Size

≤30   μm

Hardness

Mohs:9.0

Knoop   hardness

1450-2000   kg/cm3

Melting Point

1850 ℃

Maximum   service temperature

1600 ℃

Specific   Gravity

4.20g/cm3

Bulk   density(LPD)

2.18 g/cm3

Color

Gray

Specific heat   capacity(cal/g.C)

0.2205(50-500℃)

Heat   conductivity

0.2718   cal/cm2.sec.℃

Linear   expansivity(X10-6)

6.82(100-700℃)

Grains grit

4# 5# 6# 8#   10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120#   150# 180# 220#