Abrasives are classified according to their source of raw materials, including natural abrasives and artificial abrasives. The only natural abrasive used in the machinery industry is oil stone. Artificial abrasives are distinguished by their basic shape and structural characteristics. They include grinding wheels, grinding heads, whetstones , sand tiles (collectively referred to as bonded abrasives) and coated abrasives. In addition, abrasives are also conventionally classified as a type of abrasive. Consolidation tools can be classified into ordinary abrasive bonded abrasives and superhard abrasive bonded abrasives, depending on the abrasive used. The former uses ordinary abrasives such as corundum and silicon carbide, and the latter is made of superhard abrasives such as diamond and cubic boron nitride. In addition, there are some special varieties, such as sintered corundum abrasives. Ordinary abrasive bonded abrasive tool is a grinding tool with a certain strength, which is formed by bonding a common abrasive to a certain shape with a binder. Generally composed of abrasives, binders and pores, these three parts are often referred to as the three elements of bonded abrasives. Abrasives play a cutting role in abrasives. Binders are materials that consolidate loose abrasives into abrasives, both inorganic and organic. Inorganic binders include ceramics, magnesite and sodium silicate, organic resins, rubber and shellac. The most common of these are ceramic, resin, and rubber binders. The pores act as chip and chip evacuation debris during grinding, and can accommodate coolant, which helps to dissipate heat. In order to meet certain special processing requirements, some fillers such as sulfur and paraffin can also be impregnated into the pores to improve the performance of the abrasives. This filler is also known as the fourth element of abrasive whetstone . The items that characterize ordinary abrasive bonded abrasive tools are: shape, size abrasive, grain size, hardness, texture, and bonding agent. Abrasive hardness refers to the degree of difficulty that the abrasive particles are detached from the surface of the abrasive tool under the action of external force, and it reflects the strength of the abrasive particles held by the binding agent. The hardness of abrasives depends mainly on the amount of binder added and the density of abrasives. Abrasives tend to fall off and indicate that the hardness of the abrasives is low; otherwise, it indicates high hardness. Hardness grades are generally divided into seven grades: supersoft, soft, medium soft, medium, medium hard, hard, and superhard. From these grades, several small grades can be further subdivided. The method of determining the hardness of the abrasive tool, the hand-cone method, the mechanical taper method, the Rockwell hardness tester, and the sandblast hardness tester method are more commonly used. .
The whetstone produced by our company is the necessary abrasive material in industrial machinery. Welcome to the order of major customers.
Company Name: Gongyi Hongfa Minerals Co., Ltd. Tel: 86-0371-85610369
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Address: Hetaoyuan Development Zone, Gongyi City, Henan, China