abrasive


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Related to abrasive: Abrasive wear

abrasive,

material used to grind, smooth, cut, or polish another substance. Natural abrasives include sandsand,
rock material occurring in the form of loose, rounded or angular grains, varying in size from .06 mm to 2 mm in diameter, the particles being smaller than those of gravel and larger than those of silt or clay.
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, pumicepumice
, volcanic glass formed by the solidification of lava that is permeated with gas bubbles. Usually found at the surface of a lava flow, it is colorless or light gray and has the general appearance of a rock froth.
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, corundumcorundum
, mineral, aluminum oxide, Al2O3. The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in crystals of the hexagonal system and in masses. It is transparent to opaque and has a vitreous to adamantine luster.
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, and ground quartzquartz,
one of the commonest of all rock-forming minerals and one of the most important constituents of the earth's crust. Chemically, it is silicon dioxide, SiO2.
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. Carborundum (silicon carbidesilicon carbide,
chemical compound, SiC, that forms extremely hard, dark, iridescent crystals that are insoluble in water and other common solvents. Widely used as an abrasive, it is marketed under such familiar trade names as Carborundum and Crystolon.
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) and aluminaalumina
or aluminum oxide,
Al2O3, chemical compound with m.p. about 2,000°C; and sp. gr. about 4.0. It is insoluble in water and organic liquids and very slightly soluble in strong acids and alkalies. Alumina occurs in two crystalline forms.
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 (aluminum oxide) are important synthetically produced abrasives. The hardest abrasives are natural or synthetic diamondsdiamond,
mineral, one of two crystalline forms of the element carbon (see allotropy), the hardest natural substance known, used as a gem and in industry. Properties
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, used in the form of dust or minuscule stones.

abrasive

[ə′brās·əv]
(geology)
A small, hard, sharp-cornered rock fragment, used by natural agents in abrading rock material or land surfaces. Also known as abrasive ground.
(materials)
A material used, usually as a grit sieved by a specified mesh but also as a solid shape or as a paste or slurry or air suspension, for grinding, honing, lapping, superfinishing, polishing, pressure blasting, or barrel tumbling.
A material sintered or formed into a solid mass such as a hone or a wheel disk, cone, or burr for grinding or polishing other materials.
Having qualities conducive to or derived from abrasion. Also known as abradant.

Abrasive

A material of extreme hardness that is used to shape other materials by a grinding or abrading action. Abrasive materials may be used either as loose grains, as grinding wheels, or as coatings on cloth or paper. They may be formed into ceramic cutting tools that are used for machining metal in the same way that ordinary machine tools are used. Because of their superior hardness and refractory properties, they have advantages in speed of operation, depth of cut, and smoothness of finish.

Abrasive products are used for cleaning and machining all types of metal, for grinding and polishing glass, for grinding logs to paper pulp, for cutting metals, glass, and cement, and for manufacturing many miscellaneous products such as brake linings and nonslip floor tile.

The important natural abrasives are diamond, corundum, emery, garnet, feldspar, calcined clay, lime, chalk, and silica, SiO2, in its many forms—sandstone, sand, flint, and diatomite.

The synthetic abrasive materials are silicon carbide, aluminum oxide, titanium carbide, and boron carbide. The synthesis of diamond puts this material in the category of manufactured abrasives.

abrasive

A hard substance for removing material by grinding, lapping, honing, and polishing. Common abrasives include silicon carbide, boron carbide, diamond, emery, garnet, quartz, tripoli, pumice, diatomite, metal shot, grit, and various sands; usually adhered to paper or cloth.
References in periodicals archive ?
Buffalo Abrasives caters mainly to the North American market with distribution spread across the entire continental US.
Figure 3(a) indicates that there are some pits on the surface of the glass which is machined by abrasive waterjet; the diameter of the pit is about 1.5 mm, the maximum depth of the pit is about 8.2 [micro]m, and the plastic deformation zone is around the erosion pit.
He continues: "Our relationship with Meister Abrasives and Schmeier provides access to the complete range of vitrified and hybrid-bonded CBN and diamond grinding wheels for internal and external grinding applications.
In discussions with former colleagues, it seems that EAPs still play little or no role in helping employers resolve the problem of abrasive conduct in the workplace (another term for workplace bullying).
Saleem said that Modern Abrasives boasts of a conversion facility in the Middle East that provides a wide range of abrasives for every processing level in any industry.
Based on SEM images and mass loss measurements, the effects of vibration amplitude and abrasive concentration on the extent of cavitation erosion and surface characteristics were investigated.
Following thorough analysis of the line, the Wheelabrator Plus team proposed a number of solutions, including a change in abrasive type (from S460 to S390), small adjustments to the machine and the installation of a new part.
The Commission therefore required that Ahlstrom divest all of its heavy-weight abrasive paper backings and PRIP business.
Superior Abrasives are best known for their coated, non-woven, grinding and polishing products including quick-change discs, pressure sensitive adhesive discs, cartridge rolls and conversion of surface conditioning materials.
It was observed in the research that the use of gradual change structures improved the adhesive strength and abrasive resistance in the coatings, especially at high abrasive loads, in comparison with the homogenous coatings.
In the test, the samples are fixed in the depth of abrasive about 70mm.