Brown corundum

Product Description

Introduction of brown fused alumina

The common name for a brown fused alumina is also called the emery, are made of alumina, carbon materials, scrap iron three kinds of raw materials in electric arc furnace melting reduction and made of brown alundum, reason for this name. Brown fused alumina is mainly chemical composition is AL2O3, and its content from *5.*0% to *5.*0%, the other contains a small amount of Fe, Si, Ti, etc. Brown fused alumina is the most basic of abrasive, grinding performance is good, because of its applicability is wide and cheap, are widely used.

Jin Lin brown fused alumina is bauxite, coke, anthracite as main raw materials, in the Canon of high temperature smelting electric arc furnace and become, use it made of abrasive, suitable for grinding the high tensile metals, such as all kinds of steel, malleable cast iron, hard bronze, etc.

Level of brown fused alumina

Corundum principal component is the alumina, aluminum content hierarchical is used to distinguish, the lower the aluminum content is, the lower the hardness. Product size according to the international standard production, granularity processing according to user requirement. Gm grain sizes of the F4 ~ F**5, its chemical composition depending on the size of the particle size. Outstanding characteristic is little impact resistance, crystal size as broken with autogenous grinding machining, the particles are spherical particles, the surface dry clean, easy to bond.

Primary corundum: palm red, black, granular, is mainly used for precision casting, wear-resisting material, the higher requirements for abrasive industry, such as grinding wheel manufacturing fine buffing, brown corundum grinding wheel in grinding is the main type of grinding tool. In abrasive grinding wheel is to join the binder, the compact, drying, and roasting, made of a porous body. 

Secondary corundum: black granule, mainly used for sanding, polishing, grinding, anti-corrosion derusting, stone carving, gauze materials, cut pieces, etc. Such as cleaning, surface coating on the surface of the workpiece before processing, change the physical and mechanical properties of the workpiece, workpiece surface finishing processing.

Level 3 corundum: black particles gray powder, can be applied to all kinds of ground floor sand required. Such as airport runways, playground, and factory use wear-resisting flooring.

Brown fused alumina purposes

1, sand corundum (corundum used in aluminum, copper profile glass, washing jeans precision mould, etc).

2, free abrasive (corundum used in tube, optical glass, monocrystalline silicon, lens, clock and watch glass, crystal, jade, etc).

3, resin abrasive (because of corundum colors, good hardness and toughness, suitable particle cross section type and keeping degree blade, abrasive corundum used for resin, effect ideal);

4, coated with abrasive (such as brown fused alumina used as sand paper, gauze production factory production of raw materials);

5, brown fused alumina filler (corundum used in special automobile brake parts, tires, special construction products such as led can be used as building highway pavement, airport runway, docks, car parks, industrial floor, wear-resisting material such as sports venues);

6, the filter medium (corundum as the underlying medium of filter bed, purify drinking water or wastewater, brown fused alumina is especially suitable for non-ferrous metal processing, oil drilling mud weighting agent);

7, abrasive hydraulic cutting (corundum used in oil (gas) pipe, steel components, such as cutting, is a new type, environmental protection, safe way of cutting).