Product Details

Production description

Zirconia Fused alumina Grain F12 F14 F16 for centerless grinding wheel

Zirconia Alumina is made of high-purity alumina and zirconium material as raw materials. After high-temperature smelting at 2700℃, it is formed by special processing technology and Barmac ball milling. It has high quality, extremely hard, compact structure, and special crystals. Dendritic eutectic structure. According to the content of ZrO2, zirconia alumina can be divided into ZA25 Zirconia alumina (ZrO225%) and ZA40 Zirconia alumina(ZrO2 40%).

Zirconia alumina is different from ordinary fused alumina and silicon carbide with superior self-sharpening, toughness, and wear resistance. Used for making grinding wheels, it can significantly improve the life and sharpness of grinding wheels, and for grinding and cutting workpieces with higher hardness, the wear resistance is particularly obvious. Mainly used for the production of heavy-duty grinding wheels, resin-bonded grinding wheels, cutting discs, wear-resistant products, high-grade abrasive tools, etc., Zirconia Alumina is suitable for grinding steel parts, cast iron parts, heat-resistant steel, titanium alloys, nickel alloys, aluminum alloys, tungsten titanium alloys and other materials. The grinding ability is higher than that of ordinary abrasive materials.

The characteristics of zirconia alumina:

1. The toughness of Zirconia is very high, about 13-15 times that of brown aluminum oxide.

2. The crystal size of zirconia is very small (HAIXU ordinary quality crystal size is 18-20um, HAIXU high-quality crystal size is 10-12um), which is one-twentieth of the ordinary electron fused alumina. The smaller crystal size can continuously produce small sharpness edges during grinding. So the service life is improved.

3. The bulk density of zirconia is high (1.9-2.45g/cm3), while the bulk density of ordinary fused corundum such as white aluminum oxide and brown aluminum oxide is 1.55-1.95g/cm3. Zirconia alumina is suitable for the production of high-speed grinding wheels, heavy-duty grinding wheels, and cutting discs and other abrasive tools.

The difference between ZA25 and ZA40:

ZA25 has a higher alumina content than ZA40, which is suitable for wear-resistant products such as wear-resistant hammers, heavy-duty grinding wheels, bonded abrasive tools, etc.
The self-sharpening, hardness, and toughness of ZA40 are better than ZA25, suitable for cutting discs, railway cutting & grinding wheel, high-level resin grinding wheels, coated abrasives, etc.

Chemical Content
Item	ZA25	ZA40
AL2O3	70-72%	55-57%
ZrO2	24-30%	35-44%
TiO2	Max 1.0%	Max 0.8%
Fe2O3	Max 0.3%	Max 0.25%
SiO2	Max 0.8%	Max 0.6%
Physical Properties
Item	ZA25	ZA40
Specific Gravity	4.30g/cm3	4.60g/cm3
Bulk Density	1.90-2.30g/cm3	2.15-2.45g/cm3
Knoop Hardness	1600	1450
Smelting Point	1950℃	1900℃
Crystal shape	monoclinical tetragonal
Chemical property	Amphoteric
Reaction with acid and alkali	No
Reaction with carbon	Forming carbide since 1650 ℃
Crystal Size	HXB Series18-20um,HXA Series 10-12um
Maximum service temperature	1600 ℃
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℃)

Available Sizes:

F-Grit(For bonded abrasive tools)	6# 8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#
P-Grit(For coated abrasive tools)	24# 30# 36# 46# 50# 60# 70# 80# 90# 100# 120# 150# 180# 220#
Section sand and finer powder(For refractory)	0-0.5mm,0-1mm,1-3mm,3-5mm,5-8mm,100#-0,200#-0,320#-0

AZ25 F-Grit Size	Bulk density (g/cm3)
F8	2.10-2.28
F10	2.20-2.38
F12	2.16-2.34
F14	2.10-2.28
F16	2.05-2.26
F20	2.00-2.24
F22	1.97-2.25
F24	1.99-2.22
F30	1.98-2.21
F36	1.93-2.11
F46	1.92-2.10
F54	1.90-2.08
F60	1.87-2.05
F70	1.86-2.04
F80	1.85-2.04
F90	1.85-2.03
F100	1.85-2.03
F120	1.88-2.02
F150	1.88-2.01
F180	1.88-2.00
F220	1.88-2.00

Applications

Making zircon fused alumina brick and building materials.
Used for making bonded abrasives products, and process of grinding, sandblasting, surface treatment of metal products and other materials.
With good melt erosion resistance, Zirconia fused alumina has a good grinding effect on steel, iron casting, heat resistant steel, and other alloy materials.
High toughness Zirconia corundum 25% ZrO2 grain can be made for heavy-duty Zirconia fused alumina grinding wheel, snagging, cutting disc, Fiber disc, grinding rails, high-speed abrasive belts etc.
Used for making coated abrasives products.
Used for making lapping paste, polishing wax, emery cloth, sandpaper etc.

Coated Abrasive Heavy-duty grinding disc Wear Resistance hammerhead

Production:

Packing and delivery

Why choose us

We are a manufacturer, which can control the cost easier than trade company also can give you answer more quickly.
As a manufacturer, we know much in technique and can give you more support in technique problems.
Professional and experienced service team, specialized in abrasive production, more than 10 years.
Our products are complete in specifications with various of sizes
We enjoy a good reputation in the customers in domestic and overseas markets.
Large production capacity, short lead time of products.
24*7 online service.

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