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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

Al2O3

Na2O

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 ≤ %

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

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