Three series of characteristic Abrasives
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Referred to as abrasive grinding tools, grinding with abrasive, coated abrasives and superhard abrasive three major series, have their own characteristics, independent existence, their own merits. 1, Bonded Abrasives Bonded Abrasives is abrasive (grinding material) and the binding agent made of a certain shape and a certain tool grinding capacity. Bonded Abrasives tag example: the shape and size of abrasive particle size binder hardness organizations 35M/SGB/T2485 shape code 300 × 50 × 75 types of grit size of abrasive hardness of bonded abrasives grinding pace of work organization was the highest standards of technical conditions in which No. In addition to the maximum operating speed and technical conditions where abrasive standard number, the other for the consolidation of the abrasive characteristics. Thickness of abrasive grit size is the size of the abrasive abrasive products are used in the series of standards, which are based on seven characteristics of the 1998 National Standardization Technical Committee abrasives prepared by the Chinese machinery industry standards published by the provisions of each . (1) hardness: the hardness is here in the Externally Bonded Abrasives, combined with the strength and abrasive agents, according to the thickness of particle size were used to blast hardness and Rockwell hardness. Hardness of sub-super soft (super-soft one, super soft 2), soft (soft 1, soft 2), soft (the soft one, the soft-2), medium (in 1, 2), the hard (the hard one , the hard-2, the hard-3), hard (hard 1, hard 2), hard (super-hard 1, hard 2) a large class of 7 of 15 small level. (2) bond: bond in all kinds of abrasive products is the combination of bonding agent and abrasive materials. Bonded Abrasives usually ceramic, resin, rubber, magnesite binder four categories. These four types of bond to the proportion of vitrified maximum. The main material of vitrified clay, feldspar, loess, composed of quartz by different abrasive systems for different purposes and different methods (poured or pressed), such as different ceramic binder. Phenolic resin bond is mainly the type of resin, powder resin and liquid resin divided into two categories, but also according to different laws and different uses of the system is divided into different resin binder. Currently used synthetic rubber SBR bonding agent, plastic and liquid rubber Buna three categories, according to the different system of law and the use, in turn divided into a variety of rubber adhesives. Magnesite binder materials are magnesium oxide and magnesium chloride mainly two kinds of materials composed of fine-grained abrasives are mainly used for fine processing purposes. The code of various binders as follows: Name of bonding agent bonding agent bonding agent code-named V ceramic resin-bonded rubber binder B R magnesite binder MG. (3) Organization: Organization is the consolidation of the volume occupied by abrasive abrasive, by weight% vs said. Organizations in abrasives signs usually do not appear, but when the time of manufacture recipe based system, self-control to Arabic numerals, the lower the number, the more loose organization, the consolidation of abrasive in the ratio of the less abrasive, whereas the greater number of The more tightly organized, the share of the more abrasive ratio. No organization is usually a total of 13 organizations from the numbers 0-12. 2, Coated Abrasives Coated Abrasives Abrasive is the binder to adhere the abrasive on flexible substrates, also known as soft abrasive. Coated Abrasives has nine characteristics: type of substrate - substrate processing - abrasive types - abrasive particle size - sand-planting density - binder type - bond strength - Shape - Dimensions 3, super-hard abrasive super-hard abrasive is diamond or cubic boron nitride employing caused superabrasive grinding tools made of, the Department of abrasive another big series. Superhard Abrasives has the following features and markers: the concentration of binder, particle size, abrasive grade, grain thickness, diameter, total thickness, diameter, shape code in accordance with the above features and markings are standardized the 1998 National Abrasives the preparation of the Technical Committee of China by the Chinese machinery industry published standards requirements of each standard, on the concentration: the organization and the abrasive much the same numbers, but in the super-hard abrasive shall be marked in the flag. The so-called super-hard abrasive concentration is contained in each volume CM3 grams of super-hard abrasive to% numbers indicate the concentration of the following codes: Code abrasive content (G/CM3) concentration 250.2225% 500.4450% 750.6675% 1000.88100% 1501.32150% on binders: is the combination of super-hard abrasive agent used in class. Binder code is as follows: binder resin bond agent code-named metal bonded M B vitrified V.