Refractory Grade 99.6% Al2O3 White Fused Alumina Grit (XG-029)

Refractory grade 99.6% Al2O3 white fused alumina grit

Product process
White corundum using industrial alumina powder as raw materials, measures in the arc after cooling in more than 2000 degrees high temperature melting, plastic surgery to through crushing, magnetic separation to iron, screen is divided into a variety of particle size, dense texture, high hardness, particle formation Angle shape, is suitable for manufacturing ceramic porcelain, resin abrasive and grinding, polishing, sandblasting of consolidation, precision casting, precision casting special corundum), etc., can also be used for manufacturing high-grade refractory materials, codenamed "WA" international general standards, national standards, most for export, also has a certain supply of domestic users.

Performance
Crystal of trigonal system
True density of 3.90 g/cm3
Bulk density of 3.60 g/cm3
Hardness hardness is 2000-2200 Kg/was Mr Spectra
9.0 mohs hardness
The color white
Color dark blue after calcination
Melting point of 2250 C
The highest use temperature is 1900 C
Specific heat (Cal/g. C) 0.26 (20-90 - C)
Heat transfer coefficient at room temperature to 900 C
(Cal/cm3. SEC. C)
Refractive index e = 1.760 w = 1.768 (Na line)
Resistivity 30 C 300 C 900 C 1600 C (cm)
10, 10, 10, 13, 16, 5, 10, 4
Linear expansion coefficient (7-9) * 10 ^ 6 / K (0-1600 - C)
Chemical properties of the two
Sexual reaction with acid in aqua regia and slightly in hydrofluoric acid corrosion
Reaction with alkali reaction heat and strong alkali solution only slightly
No oxidation reduction effect

Usage
1 can be used in all kinds of sandblasting and research the light (Lapping) homework;
2. Glass or acrylic engraving aesthetic feeling of atomization processing;
3. Television screens sandblasting process;
4. The cutting of silicon wafer;
Teeth clean sand;
6. Precision casting sand;