The abrasive particles applied or pressed onto the surface of the grinding tool are used to process and refine the surface of a workpiece (such as for cutting processes) through relative motion between the tool and the workpiece under certain pressure. Grinding can be used on all kinds of metal and non-metal materials, with shapes including flat surfaces, inner and outer cylindrical surfaces, conical surfaces, convex and concave spherical surfaces, threads, tooth surfaces, and other shaped surfaces. Processing accuracy can be up to IT5-01, and the surface roughness can reach Ra0.63-0.01 micrometers. Grinding methods are typically divided into three groups: dry grinding, semi-dry grinding, and wet grinding.
Also known as sand-embedding grinding, the abrasive is uniformly embedded on the surface layer of the grinding tool. During grinding, only a small amount of auxiliary material, such as a mixture of stearic acid and lard, needs to be applied to the surface of the grinding tool. Dry grinding is often used for precision grinding, and the particle size of the abrasive used is finer than W7.
Similar to wet grinding, a paste-like abrasive is used. Grinding can be done manually or using a grinding machine. Prior to grinding, the workpiece must be machined with higher accuracy, and the grinding allowance usually ranges from 5 to 30 micrometers.
Also known as sand-applying grinding, liquid grinding fluid is continuously added or applied to the grinding surface. The abrasive material constantly slides and rolls between the workpiece and grinding tool, forming a cutting motion. Wet grinding is usually used for coarse grinding, and the particle size of the abrasive used is coarser than W7.
Grinding tools are the tools used to grind and shape workpieces, and are the medium for the abrasive material. The hardness of the grinding tool should be lower than that of the workpiece, and have a certain degree of wear resistance. They are most commonly made of gray cast iron. Dry grinding tools have a uniform and fine pearlite matrix, while the matrix of wet grinding tools is primarily ferrite. When grinding small holes and soft metal materials, brass and copper grinding tools are mostly used. During the grinding process, the grinding tool is also subject to cutting and wear. With proper operation, the accuracy of the grinding tool can also be improved, allowing the processing accuracy of the workpiece to be higher than the original accuracy of the grinding tool.
Brown fused aluminum oxide abrasive materials are mainly used in industries such as bicycles, aluminum die-casting, zinc die-casting, furniture hardware accessories, clothing hardware accessories, luggage hardware accessories, eyewear parts, clock and watch parts, locks, electronic components, all kinds of jewelry, and powder metallurgy and resins. They are used for different cutting and polishing effects on materials such as stainless steel, iron, copper, zinc, aluminum, and magnesium alloys processed by stamping, die-casting, casting, and forging, as well as on wire, ceramics, jade, coral, synthetic resins, plastics, porcelain, and other materials. There are also solutions for problems such as surface brightness, chamfering, burr removal, rust removal, and rough polishing.