洛阳日出磨料有限公司

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白刚玉 WHITE FUSED ALUMINA

白刚玉颜色呈白色，硬度略高于棕刚玉，韧性稍低，用其制成的磨具适用于磨削高碳钢、高速钢及不锈钢、细粒度磨料还可用于精密铸造及高级耐火材料等。

用途及产品代号

用途	用于陶瓷磨具	用于树脂磨具	用于涂附磨具
产品代号	WA	WA-B	WA-P1

理化性能指标

产品代号	粒度范围	化学成份%		真密度	粒度形状
产品代号	粒度范围	Al2O3	Na2O	真密度	粒度形状
WA	F12-80	≥98.50	≦0.40	≥3.90	等体积
	F90-150	≥98.50	≦0.40
	F180-220	≥98.20	≦0.40
	F230-400	≥98.00	≦0.50
	F500-1200	≥97.50	≦0.60
WA-B	F12-80	≥99.00	≦0.40	≥3.90	等体积
	F90-150	≥98.50	≦0.40
	F180-220	≥98.00	≦0.40
	F230-600	≥97.50	≦0.50
WA-P1	P16-80	≥99.00	≦0.40	≥3.90	等体积针状
	P100-150	≥98.50	≦0.40
	P180-400	≥98.00	≦0.50
	P500-1200	≥97.50	≦0.60

白刚玉磁性物含量的国家标准

粒度范围	磁性物含量 ≤ %
粒度范围	WA	WA-B,WA-P
12-30	0.0023	0.0040
36-60	0.0022	0.0035
70-120	0.0021	0.0030
150-220	0.0016	0.0025

White fused alumina is electrically fused in arc furnace with high grade Bayer's process alumina as raw material. It has higher hardness and slight lower toughness comparing with brown fused alumina. It is also characterized by its high purity, ability of self-sharpening, better cutting, less heat emit, higher efficiency, acid and alkali resistance, good thermal stability. Abrasives tools made of it are suitable for grinding high-speed, high carbon steel, etc. It also can be used as materials for grinding and polishing, precision casting, spraying and coating, medium body for chemical industry, special ceramics and high-grade refractory materials, etc.

1) For refractories materials

Specification(ⅰ):

Al2O3	99%Min
Na2O	0.5%Max
Size	0-1mm/1-3mm/3-5mm/5-8mm/8-15mm/10-20mm/0-50mm

Specification(ⅱ):

Al2O3	98.5%Min
Na2O	0.5%Max
Size	150mesh/200mesh/325mesh

2) For abrasives
For bonded abrasives

	Chemical composition (weight %)
Grit NO.	Al2O3		Na2O
F12-F80	98.50Min		0.50Max
F90-F150	98.50Min		0.60Max
F180-F220	98.20Min		0.70Max
Grit NO.		Magnetic material content (%)
F12-F30		0.0023Max
F36-F60		0.0022Max
F70-F120		0.0021Max
F150-F220		0.0016Max