Referred to as abrasive grinding tools, grinding with abrasive products, coated abrasives and superhard abrasive three major series, have their own characteristics, independent existence, their own merits. 1, Bonded Abrasives Bonded Abrasives are used abrasives (grinding material) and the binding agent made of a certain shape and a certain ability double disc grinding tool. Abrasive markup example: Dimensions abrasive particle binder hardness organization 35M/SGB/T2485 outline code 300 × 50 × 75 kinds of abrasive grit size of bonded abrasives hardness maximum operating speed abrasive organization number where the scales Except as technical prerequisites maximum operating speed and abrasive technology premise where the scale number, the rest of the characteristics of bonded abrasives. Abrasive grit size refers to the thickness of the size of the abrasive abrasive scale using the next series, which features seven 1998 are based on the national standardization technical committee abrasives prepared by the China Publishing House of the machinery industry in each of the designated scale fixed. (1) Hardness: Hardness is here under loads abrasive, binder and abrasive combination of strength, according to the thickness of grain size were sandblasted and Rockwell hardness measurement. Hardness of ultra-soft (super-soft one, super-soft 2), soft (soft one, soft 2), the soft (the soft one, the soft 2), medium (medium 1, 2), the hard (the hard one, the hard 2, the hard-3), hard (hard one, hard 2), hard (superhard 1, hard 2) other seven large class of 15 small magnitude. (2) binders: binding agent is abrasive in the abrasive bonded with various binder materials. Bonded Abrasives usually ceramic, resin, rubber, magnesite four kinds of other binding agent. These four binders with vitrified bond for the largest proportion. The main materials are vitrified clay, feldspar, loess, quartz and other components according to different abrasives, different uses and different production method (casting or pressed), such as different ceramic binder. Mainly phenolic resin binder resin type, sub-powdered resin and liquid resin into two categories, depending on the production method is also different uses and is divided into a variety of different resin bond. Rubber binders currently used artificial SBR, Buna rubber and liquid rubber three categories, based on different system of law and the use of different turn divided into a variety of different rubber binder. Magnesite binders main materials are magnesium oxide and magnesium chloride is composed of two materials, mainly used for fine-grained abrasive for fine processing purposes. Various binders code is as follows: Name of bonding agent bonding agent code vitrified V resin bond B R magnesite bonded rubber binder MG. (3): the organization refers to the abrasive abrasive according to some volume, expressed in weight percent ratio. Typically organizations abrasive flag is not displayed when you set up the system to manufacture formulations, self-control in Arabic numerals, ie the lower the number, the more loose tissue, ie the ratio of abrasive products in the less abrasive, whereas larger numbers The more tightly organized, the share of the more abrasive ratio. Usually number from 0-12 Organization of 13 organizations numbers. 2, Coated Abrasives Coated Abrasives is a binder to adhere abrasive abrasive flexible substrate, also known as flexible abrasive. Coated abrasives have nine characteristics: Substrate Type - Substrate processing - Abrasive Type - abrasive grain size - sand-planting density - binder category - bond strength - Shape - Size 3, superhard abrasive superhard abrasive means employing caused superabrasive diamond or cubic boron nitride machine grinding tools made of, the Department of abrasive another big series. Superhard abrasive has the following characteristics and marking: the concentration, binders, particle size, grade of abrasive, abrasive layer thickness, diameter, total thickness, diameter, shape code in accordance with the above characteristics and marking are abrasive 1998 National scaling prepared by the Technical Committee of China Publishing House of the Chinese machinery industry scale delineation of each scale on concentration: abrasive organization with approximately the same number, but in the superhard abrasive in the logo should be marked. The so-called superhard abrasive concentration is contained within each volume of superabrasive CM3 number of grams in% number indicates the concentration code below: Code abrasive content (G/CM3) concentration 250.2225% 500.4450% 750.6675% 1000.88100% 1501.32150% About binders: superhard abrasive is used in other types of binding agents. Bond Code is as follows: Code binder binder resin bond B metal bonded M vitrified V.