When it comes to polishing sheets, everyone may not understand them. The following low price grinding disc manufacturers will let you know. The polishing sheets will be damaged to varying degrees during use, so small that they are not easy to detect. The reason for falling off is related to the hardness of the polishing sheet. The hardness of the polishing sheet refers to the difficulty of the abrasive grains on the surface of the polishing sheet falling off from the bonding agent under the action of the cutting force. The abrasive particles are easy to fall off, the hardness of the grinding tool is low; otherwise, the hardness is high. The general principle of hardness selection of polishing sheet is: grinding hard material, soft-grinding should be used to keep it good self-sharpness, improve the service life of the low price grinding disc, reduce grinding force and grinding heat; When softening the material, the hard low price grinding disc should be used, which can keep the sharp edge of the abrasive grain sharper for a long time, which is good for cutting. The details are as follows: 1. When grinding toughness, such as non-ferrous metal workpieces, high-hardness cutting tools, grinding thin-walled parts and materials that have blocked the grinding discs, softer grinding discs should be used; super-soft grinding discs should be selected for mirror grinding. 2, the workpiece material is the same, longitudinal grinding and plunge grinding, peripheral grinding and end grinding, cylindrical grinding and inner circle, plane grinding, wet grinding in dry grinding, fine grinding in rough grinding, intermittent surface grinding Cutting and continuous surface grinding, etc., the former must use a harder than the latter. 3, high-speed, high-precision grinding, steel blank grinding, workpiece deburring, etc., should choose a harder grinding. Generally speaking, it is required to have high efficiency, large surface roughness value, large contact surface between the grinding plate and the workpiece, or grinding of the workpiece to the bevel of the workpiece, high toughness of the workpiece material, large elongation and processing of thin-walled workpieces. Some particle sizes; conversely, processing materials with high hardness, brittleness and tight structure; when grinding, forming or high-speed grinding, choose a smaller particle size. Henan Aurora Abrasive Tool Co., Ltd. specializes in low price grinding disc, grinding wheel ultra-thin, Henan abrasive abrasive equipment special equipment development and production management business. If you need to welcome to inquire.