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High content 99% white corundum
Product introduction
Product introduction white corundum industrial alumina powder as raw material, in arc in 2000 degrees of above high temperature smelting made after cooling, after smashing plastic, magnetic separation to iron, screen is divided into many kinds of particle size, the dense texture, high hardness, grain formation Angle shape, white corundumSuitable for manufacturing ceramic porcelain, resin consolidation grinding tool and grinding, polishing, sandblasting, precision casting (jingzhu special corundum), etc., can also be used in the manufacture of high-grade refractory materials, codenamed "WA" the international general standards and national standard consistent, most for export, also have a certain amount supply domestic users. The granularity of product according to the international standards and national standards production, can be in accordance with the requirements of customers processing size. Universal size number is the F4 ~ F220, its chemical composition depending on the particle size and different. Outstanding characteristic is crystal size small impact resistance, if use since the mill processing broken, grain much for spherical particles, the surface dry clean, easy to bond combination. To edit this period of white corundum density density is divided into two kinds, one is white corundum deposit density, 2 it is BaiGang YuZhen density. Stacking density for: 1.53 ~ 1.99 g/cm3, abrasive of stacking density and abrasive particle size, particle size composition, species, particle shape factors are relevant, generally speaking, coarse granularity abrasive than fine particle size abrasive stacking density is big, mixed abrasive particle size of stacking density is greater than the single particle size density. Grain density for: 3.95 ~ 4.0 g/cm3, in recent years, zhengzhou HuaDi abrasives co., LTD. Of jingzhu special just YuZhen density has reached 4.1 g/cm3, abrasive true density is refers to the unit volume (excluding open pore volume) contained in the quality of the abrasive basic particle size for: 45% ~ 55%, the basic particle size is to guarantee the effect of grinding is an important index in production should be appropriate control, but production speed may slow. To edit this period of physical properties of crystal trigonal systemTrue density 3.90 g/cm3Bulk density 3.60 g/cm3Hardness knoop spectrum hardness 2000-2200 Kg/best callus inductionMorse's hardness 9.0White colorAfter calcining color dark blueMelting point 2250 CMaximum working temperature 1900 CSpecific heat (Cal/g. C) 0.26 (20-90 - C)Coefficient of thermal conductivity at room temperature 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 and 10 13 10 5 10 4Coefficient of linear expansion (7-9) * 10 ^ 6 / K (0-1600 - C)Chemical properties twoSex and acid reaction in aqua regia and a slight corrosion in hydrofluoric acidOnly with alkali reaction with alkali solution heat slightly reactionOxidation reduction effect noTo edit this period of white corundum physical and chemical index USES specifications main chemical composition %
Al2O3 Na2O magnetic material % SiO2abrasiveAbrasive add # - 80 # 99.4 or 0.4-0.03 or less or less90 #, 150 # 99.3 or 0.4 acuities acuities were 0.03 0.05 or less180 #, 240 # 98.2 or 0.4-0.03 or less or less1 # - 63 # 99.3 or 0.4 acuities acuities were 0.03 0.05 or lessrefractoryMaterial # 180-0# 200-0320 # 0 or less 99.3 or 0.4 acuities were 0.06 0.05 or lessFine powder 0 to 1 mm1-3 mm3-5 mm5-8 mm8-12 mm or less 99 or 0.4 acuities were 0.1 acuities were 0.02Edit this section, the main producing area of corundum main origin have China's henan, anhui, qinghai province, among them with some of the earliest established manufacturers produce of corundum quality is better. Also have Burma, Thailand, Sri Lanka, Vietnam, Tanzania corundum edit this section abrasive magnitude advantages 1, does not affect the color of the machined part; 2, in it is strictly prohibited to iron powder residual process used to sand; 3, micro powder level is very suitable for wet sand and inquiry light homework; 4, processing speed high quality; 5, contains the amount of iron oxide extremely low for it is strictly prohibited to iron residual sand homework; 6, after pickling steps to impurities. Edit this section USES for example 1, can be used in all kinds of sand and research of light (Lapping) homework; 2, glass or acrylic product of atomization aesthetic processing; 3, TV screen process in sand; 4, silicon crystal yuan of cutting; 5, tooth die of clean sand; 6, precision foundry sand; Edit this section applicable scope white corundum are suitable for all kinds of high-end products, technology or hardware product surface beautification processing, sand surface white without any impurities, sparing cleaning trouble. Fine, white corundum used for polishing grinding head. Can also be used to do all kinds of product additive. 1, surface processing: metal oxide, carbide black, metal or non-metal surface dirt rust removal, such as gravity die mold, rubber mold of the oxide or from the shape of the agent to remove, ceramic surface black spots, uranium color removal, coloured drawing or pattern rebirth. 2, beautification processing: all kinds of gold, K gold jewellery, precious metals products of extinction or fog surface processing, crystal, glass, corrugated, acrylic etc. Nonmetal the fog of surface processing and can make machining surfaces into metallic luster. 3, etching processing: jade, crystal, agate, semi-precious stones, seals, and stone, antiques, marble tombstone, ceramics, wood, bamboo piece of etching artists. 4, pretreatment processing: TEFLON (TEFLON), PU, rubber, plastic coating, rubber barrels (ROLLER), electroplating, metal spray welding, plating titanium before treatment, make the surface adhesion increase. 5, deckle edge processing: bakelite, plastics, zinc, aluminum die-casting products, electronic parts, core of burrs removal. 6, stress relieving processing: aerospace, national defense, precision industry
| Henan, China (Mainland) |
| Chaoyue |
| CYAC |
| Al2O3 |
| Abrasives |
| 0-1mm 1-3m 3-5mm 5-8mm |
| granule |
| white |
| white fused alumina for refractory(white corundum) |
| Al2O3 |
| china |
| 0-1,1-3,3-5,5-8mm |
| Tianjin |
| usd800/ton |
| 25KG/bag |
| 1 |
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High content 99% white corundum