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Semi-brittle corundum

Semi-brittle corundum

Semi-friable fused alumina is a new type of top grade fused alumina in China whichcombines the merits of brown and white fused alumina, i.e. the toughness of brownfused alumina and the sharpness of white fussed alumina. With the unique grindingand cutting effect, it can be used for manufacturing high grade ceramic, resin grindingtools and coated abrasive tools. The bonded abrasive product manufactured with itprovides a higher durability, good sharpness and retentiveness. While processing somework pieces under the same conditions, it demonstrates better surface quality, higherprocessing efficiency and better durability of grinding tool than brown, white, chromeand monocrystalline fused alumina. Compared with brown fused alumina grinding wheel.after each trimming of grinding tool, the number of work pieces it processes can bedoubled. And compared with white fused alumina and monocrystalline fused alumina.it can increase by 10% to 30% or reach the same use effect. Used for rough grinding, itcan improve the processing efficiency and used for accurate grinding it can improve thesurface quality of work piece. lt is applicable to regular steels, bearing steels, stainlesssteels and tool steels for industrial use, especially stainless steels and work pieces whichis easily deformed or burned from overheat. lt can also be used to process special alloysteel with low content of chrome, vanadium, molybdenum, tungsten, cobalt, some castiron, all kinds of nonferrous metals, such as aluminum alloy which contains copper, nickeland magnesium, copper which contains sulfur and zinc, magnesium alloy which containaluminum and zinc, etc.

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Coated Brown Corundum Abrasives

Coated Brown Corundum Abrasives

Plated Brown Fused Alumina Abrasive is a new type of abrasivewhich is plated with ferric oxide on the surface by a specific processinglt is made from high quality brown fused alumina or brown fused aluminacalcined at high temperature through intensive deep processing andhigh temperature heating. The product features a large specific surfacearea, strong hydrophilicity, even particle size, high purity, strong bindingpower, cutting efficiency and good heat dispersion performance. lts mainperformance indexes are as below: compared with normal brown fusedalumina. lts micro-hardness increases by 10%, toughness increases by10%, hydrophilicity increases by 3.5 times, grinding and cutting quantityincreases by 3% and efficiency increases by 30 to 50%. lt can be used fortop grade coated abrasive tools and top grade resin wheel.

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Brown corundum high-temperature calcined abrasive

Brown corundum high-temperature calcined abrasive

Brown fused alumina shows blue after calcination at acertain high temperature. The impurities existed in the abrasiveswill be separated out or vaporized. The surface of each particlebecomes coarser, which greatly improves the hydrophilicity ofabrasive grains. After calcinations, cracks made from abrasivecrushing and crystal cooling process will be closed, thus greatlyimproving the toughness, strength and enhancing the wealresistance of the abrasive.

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Medium temperature calcined brown corundum

Medium temperature calcined brown corundum

After calcinations at a certain temperature according to different gritnumbers and subsequent processing, the organic matters inherent in theabrasive will vaporize and the abrasive will have higher purity, cleanlinessstronger hydrophilicity, smaller expansion coefficient, higher toughnessower content of magnetic materials and higher strength, thus improvingthe grinding efficiency, precision of grinding tools and being more suitablefor producing top grade coated abrasive tools and bonded abrasive tools.

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Brown corundum

Brown corundum

Brown fused alumina abrasive features micro-hardness of HV1800 - 2,200kg/mm'and is tougher than silicon carbide. lt is suitable for the normal grinding, cutting-off and loosegrain polishing of metal materials with high tensile strength, such as carbon steel, alloy steel.malleable cast iron and hard bronze. lt is also a very practical advanced refractory material.

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