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Sandpaper, also known as coated abrasive, is a type of material that consists of sheets of paper or cloth with an abrasive substance glued to one face. [1] In the modern manufacture of these products, sand and glass have been replaced by other abrasives such as aluminium oxide or silicon carbide.
ISO 3017:1981 Abrasive discs — Designation, dimensions and tolerances — Selection of disc outside diameter/centre hole diameter combinations [Withdrawn: replaced with ISO 21950] ISO 3018:1974 Textile floor coverings — Rectangular textile floor coverings — Determination of dimensions
To achieve optimal surface speed and cutting conditions, burrs are rapidly rotated at high speeds, often in the range of thousands or tens of thousands of RPM, which is typically the maximum speed supported by a given spindle. The cutters depicted in the image, being made of tungsten carbide, can withstand and operate at these elevated speeds.
the chemical composition of the abrasive particles (common abrasives include diamond, cubic boron nitride (CBN), chromium(III) oxide, tungsten carbide, silicon carbide and other ceramics). In synthetic stones, the grit size is related to the mesh size used to select the particles to be included in the abrasive. Sandpaper also uses a similar system.
Silicon carbide (SiC), also known as carborundum (/ ˌ k ɑːr b ə ˈ r ʌ n d əm /), is a hard chemical compound containing silicon and carbon. A wide bandgap semiconductor , it occurs in nature as the extremely rare mineral moissanite , but has been mass-produced as a powder and crystal since 1893 for use as an abrasive .
For long straight cuts on sheet metal or for light cut-off work, a standard circular saw is used with a 7 + 1 ⁄ 4-inch cutting wheel. These cutting discs are made just like the smaller wheels of an angle grinder, with resin bonded abrasive material, or are of metal with a diamond-coated edge. A cutoff saw is used for cutting larger items ...