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Abrasives |
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Black
Aluminum Oxide
With high toughness, black aluminum oxide is extremely
suitable for polishing stainless steel and non-ferrous metals. It"s
grinding efficiency is much higher than that of brown A/O and the
finishing effect is much better than many of other abrasive materials.
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Black Silicon Carbide
Black silicon carbide is produced at high temperature
in an electric resistance type furnace with quarts sand and petroleum
coke as its main raw materials. Its hardness is between fused
alumina and synthetic diamond. Mechanical intensity of it is higher
than fused alumina.
It is brittle and sharp and has electrical and heat conductivity
in some degree. The abrasives made of it are suitable for working
on cast iron, non-ferrous metal, rock, leather, rubber, etc. It
is also broadly used as refractory material and metallurgical
additive.
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Boron
Carbide(BC)
The hardness of boron carbide is second only to diamond.
New Mohs scale shows the hardness is 14. Its specific gravity is
2.5g/cm3. It is charaterized by absorption of neutron, semi-conducting
property, light mass and high efficiency in grinding, so suitable
for grinding and polishing hard alloy, precious stones. It is also
main raw material for making engeering
ceramic, refractory materials. Many products such as precision spray
nozzle, sealing ring, moulds and some measuring elements are also
make of it. |
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Brown
Aluminum Oxide(A)
Brown fused alumina is fused and crystalized under
high temparature from a mixture of bauxite and other raw materials.
It is characterized by its high hardness, good toughness and sharp
shape in size.
Abrasives tools made of it are suitable for grinding metals of high-tensile
strength such as : carbon steel, general-purpose alloy steel, annealed
malleable iron and hard bronze, etc. It also can be used as refractory
materials. |
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For more information on
Abrasives. Click
here |
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