The large-pore pink fused alumina grinding wheel is a common grinding tool. The following will introduce it from the dimensions of material composition, characteristics, application scope, selection method, etc.:
Materials and Composition of pink fused alumina Grinding Wheels
Pink fused alumina abrasive: The main abrasive of pink fused alumina grinding wheel is pink fused alumina, which is made of industrial alumina powder as the main raw material, adding an appropriate amount of metal oxide, and smelting in an electric arc furnace. Pink fused alumina abrasive has the characteristics of high hardness and good toughness. Its hardness is similar to that of white aluminum oxide, and its toughness is higher than that of white aluminum oxide grinding wheel, and it can maintain good grinding performance and shape retention.
Binder: Commonly used binders include ceramic binder, resin binder, etc. Ceramic binder has stable chemical properties, good heat resistance, corrosion resistance, large porosity, and the grinding wheel manufactured has high grinding efficiency, low wear, and can better maintain the geometric shape of the grinding wheel; the grinding wheel manufactured by resin binder has high strength, certain elasticity, low heat resistance, good self-sharpening, simple production, short process cycle, and can be used to manufacture grinding wheels with working speeds higher than 50 m/s and very thin grinding wheels.
Characteristics of pink fused alumina grinding wheel
Good grinding performance: Pink fused alumina itself has high hardness and good toughness, which enables the grinding wheel to effectively cut the workpiece material during the grinding process, with high cutting efficiency, while ensuring the quality of the grinding surface and obtaining good finish.
Not easy to clog: The design of large pores enables the grinding chips to be taken away by the air flow in time during the grinding process, or fall into the pores, avoiding the accumulation of grinding chips on the surface of the grinding wheel, thereby reducing the possibility of grinding wheel clogging and ensuring the continuous grinding ability of the grinding wheel.
Good heat dissipation: The large pores increase the contact area between the grinding wheel and the air. During grinding, air can flow through the pores, taking away a large amount of grinding heat, reducing the temperature of the grinding wheel and the workpiece, and reducing the risk of deformation, burns and other defects of the workpiece due to overheating. It is also beneficial to extend the service life of the grinding wheel.
Good self-sharpening: During the grinding process, the pink fused alumina abrasive grains can be broken and fallen off in time under the action of a certain grinding force, exposing new sharp abrasive grains and maintaining the grinding performance of the grinding wheel. This self-sharpening property helps to improve grinding efficiency and quality.
Application scope of pink aluminum oxide grinding wheel
Metal processing: widely used in grinding of metal materials such as hardened steel, high-speed steel, alloy steel, 40 chrome, 45 steel, chrome-plated workpieces, high-carbon steel, such as grinding crankshafts, axles, guide rails and other parts, and can also be used for grinding of workpieces with high surface processing quality requirements such as tools, measuring tools, instruments, threads, etc.
Other fields: In addition to the metal processing field, large-pore pink aluminum oxide grinding wheels may also be used in the processing of some non-metallic materials with high grinding accuracy and surface quality requirements, such as grinding of ceramic materials, glass fiber reinforced plastics, etc.
Selection method of pink fused alumina grinding wheel
Select according to the workpiece material: For metal materials with higher hardness, such as hardened steel, high-speed steel, etc., large-pore pink aluminum oxide grinding wheels can be effectively used for grinding; for materials with lower hardness and greater toughness, it is necessary to select the appropriate grinding wheel hardness and grain size according to the specific situation.
Select according to the grinding process: When rough grinding, you can choose a large-pore pink aluminum oxide grinding wheel with coarser grain size and lower hardness to improve the grinding efficiency; when fine grinding, you should choose a grinding wheel with finer grain size and higher hardness to obtain better surface quality.
Select according to the type of grinder: Different types of grinders have different requirements for the size, shape and speed of the grinding wheel. Therefore, it is necessary to select a suitable large-pore pink aluminum oxide grinding wheel according to the specific specifications of the grinder to ensure the matching of the grinding wheel and the grinder to ensure the smooth progress of the grinding process.
