Product Introduction of White electrofused alumina grain

 

WFA Abrasive blasting media is made of 99% aluminum oxide powder as raw material, which is refined and crystallized by electric melting (thus white corundum is also called fused alumina and white fused alumina). The white corundum sand produced by our factory has high purity, low impurities, low sodium content, uniform particles and high whiteness.

 

Typical chemical analysis of White electrofused alumina grain

AL2O3	99.59%
Fe2O3	0.02%
Na2O	0.24%
K2O	0.02%
SiO2	0.01%
CaO	0.02%
MgO	0.01%
L.I.O.	0.09%

 

 

Characteristics of White electrofused alumina grain

1. Because the white fused alumina has good self-sharpening, strong toughness, strong grinding ability, hardness higher than brown corundum, and low heat generation, it can not only be used as a raw material for abrasive tools such as cutting discs and grinding wheels.

2. White fused corundum can also be directly used in grinding and polishing, surface treatment, sandblasting and rust removal, and can be used in dry and wet sandblasting, surface polishing and polishing, and surface treatment before spraying. 

3. Fused alumina sand has strong wear resistance, so it is suitable as an additive material for wear-resistant products.

4. White fused corundum has high refractory temperature, acid and alkali corrosion resistance, and good thermal performance. It can be used as high temperature resistant materials such as casting surface sand, thermally conductive ceramics, and high temperature resistant glue. It is widely used in casting, steel refractory, chemical refractory, 95 batteries, decorative porcelain and other special ceramics and porcelain for daily life, as well as high-tech industries such as semiconductors and electronics.

 

3. Typical physical properties of White electrofused alumina grain

 

Hardness:	Mohs:9.0
Maximum service temperature:	1900 centigrade
Melting Point:	2250 centigrade
Specific Gravity:	3.95g/cm3
Volume density	3.6g/cm3
Bulk density(LPD):	1.55-1.95 g/cm3
Color:	White
Particle shape:	Angular

 

4. Product Feature of WFA Abrasive blasting media:

• High Whiteness,WFA blasting media don’t affect the color of substrate.
• High hardness with good self-sharpening ability.
• Low grinding heat in blasting process. There is no metal and other residues on surface.
• Even particle distribution not blocking blasting nozzle.
• Low Na2O content and high Al2O3 purity.

 

 

5.Applications of WFA Abrasive blasting media:

 

• Metal sandblasting surface treatment:

Removing the oxide layer of metal, stainless steel, aluminum alloy, tungsten molybdenum, copper products and other materials. Abrasive sandblasting to remove rust. White aluminum oxide grain has strong grinding ability and high efficiency. It can be recycled and will not leave residues on the surface of the workpiece. White aluminum oxide grain does not contain iron, sulfur, chlorine and other elements. It can be used in dentistry, food, medical equipment, aerospace and other fields :

i. -Surface treatment before spraying for spraying, painting, supersonic thermal spraying, etc., to increase the unevenness of the surface of the material and enhance the holding power of the sprayed material. B-Prepare the surface treatment before painting the back panels of mobile phones and laptops.

ii.-Surface treatment before metal spray welding and titanium plating, such as sandblasting on the surface before brazing of super-hard grinding wheel and cemented carbide.

 

 

2. Surface treatment of glass and non-metallic materials:

i. Colored glass, glass products, ceramic products, bamboo chips, wood products, composite non-metallic materials and other materials such as sandblasting, matting, polishing, matte treatment, etc. Rubber materials such as printing rubber rollers, rubber molds, PU materials, acrylic sheets, plastics and other materials are surface-etched.

 

3. Semiconductor industry: White aluminum oxide used for surface treatment of aluminum alloy semiconductor components, surface treatment and sandblasting before vacuum sputtering; removal of impurities on the back of wafers.

 

4. Mold processing industry: White aluminum oxide blasting media for surface treatment of metal molds, forged steel molds, forged aluminum molds, mold steel, carbon steel, and mold processing industries such as matte surface treatment after mold biting. For example, wire cutting molds, glass molds, tire molds, conductive rubber molds, shoe molds, bakelite molds, electroplating molds, button molds, plastic product molds and other molds all use alumina sand.

 

5.Skin cleaning:Microdermabrasion Crystals white aluminum oxide could improve scars,blackheads,pore size. It makes skin smooth and clean without any contaminant.

 

 

 

 

6.Product Specification of WFA Abrasive blasting media:

 

Grit	1		2		3		3 and 4		5	Q5max,%
	W1,um	Q1,%	W2,um	Q2max,%	W3,um	Q3min,%	W4,um	Q3+Q4min,%	W5,um
F8	4000	0	2800	20	2360	45	2000	70	1700	3
F10	3350	0	2360	20	2000	45	1700	70	1400	3
F12	2800	0	2000	20	1700	45	1400	70	1180	3
F14	2360	0	1700	20	1400	45	1180	70	1000	3
F16	2000	0	1400	20	1180	45	1000	70	850	3
F20	1700	0	1180	20	1000	45	850	65	710	3
F24	1180	0	850	25	710	45	600	65	500	3
F30	1000	0	710	25	600	45	500	65	425	3
F36	850	0	600	25	500	45	425	65	355	3
F40	710	0	500	30	425	40	355	65	300	3
F46	600	0	425	30	355	40	300	65	250	3
F54	500	0	355	30	300	40	250	65	212	3
F60	425	0	300	30	250	40	212	65	180	3
F70	355	0	250	25	212	40	180	65	150	3
F80	300	0	212	25	180	40	150	65	125	3
F90	250	0	180	20	150	40	125	65	106	3
F100	212	0	150	20	125	40	106	65	90	3
F120	180	0	125	20	106	40	90	65	75	3
F150	150	0	106	15	90	40	75	65	63	3
F180	125	0	90	15	75	*	63	40	53	*
F220	106	0	75	15	63	*	53	40	45	*

 

7.Packing of WFA Abrasive blasting media:

• 25KGS/PVC Bag
• 1Metric Ton/Jumbo Bag
• 25KGS/PVC Bag,40Bags/Jumbo Bag
• 1 Metric Ton/Jumbo Bag/Pallet
• Other customized package are available

 

 

FAQ:

Q:Are you manufacturer or trading company?

A:We are manufacturer of white fused alumina. HAIXU Abrasives has white aluminum oxide manufacturing experience of 22 years. We produce WFA section sand, WFA grains, WFA powder, etc.

 

Q:Are the WFA grains you get is produced from Tilting furnace or Fixing furnace?

A:Our WFA grains F8-F220 are produced from fixing furnace. Fixing furnace WFA is of higher toughness and more durable.

 

Q:What is the content of Na2O of your WFA grains?

A: We have normal Sodium WFA grain and low Sodium WFA grain. Normal WFA grain Na2O content is max. 3% which is lower than most competitors. Low sodium WFA grain Na2O content is max.0.1%.

 

Q:Do you have a MOQ of WFA grain?

A:Generally no limit of MOQ. Even 25kgs(1 bag)is ok for us. But the logistic cost will be higher than normal.

 

Q:What substrate is the WFA grain blasting for?

A:WFA grain works good for Aluminum alloy, stainless steel, glass, acrylic,etc.

 

Q:What is the leadtime of FCL WFA grain?

A: Generally 7-10 days after receiving deposit.

Contact：

Ms. Chen

Moible/Whatsapp ： 0086 13526538098