The principle of solid polishing wax and how long the shelf life can be kept. First of all, let's look at the characteristics, precautions and selection criteria of solid polishing wax and polishing abrasives. First, let's talk about the tools, polishing wheels, and plane grinders (polishing machines) of solid polishing wax. When polishing metal surfaces, solid polishing waxes play a vital role and require different working properties. So, what properties does solid polishing wax need to have in order to meet the requirements of the surface grinder (polishing machine) to give full play to the polishing of metal surfaces? 1. Three characteristics of solid polishing wax: 1. Polishing performance: The polishing liquid equipped with appropriate particles of abrasives has the effect of fast light output and stable polishing performance in the process of polishing with a flat polishing machine. The polishing can achieve large smoothness and good gloss within 1 hour. Precision precision. 2. Anti-rust performance: For the mirror polishing of some stainless steel plates, the polishing liquid of the plane polishing machine should also have an anti-rust function. Avoid strength reduction at stress concentration locations. 3. Cooling performance: The cooling performance of the polishing liquid is mainly for those processing materials with poor thermal conductivity. It is beneficial for the frictional heat to be dissipated in time. Generally, the thermal conductivity of water is much larger than that of oil, so in many cases, the polishing liquid is oil-in-water to meet the heat dissipation requirements and avoid burns in the plane polishing machine. The performance of the plane grinder (polishing machine) is fully exerted, which has a great relationship with the configuration of the above-mentioned polishing performance, anti-rust performance and cooling performance of the solid polishing wax. Solid polishing wax and sandpaper, dust-free dry grinder, sandpaper are equivalent to polishing abrasive materials. So, where are polishing abrasives used specifically? What are the precautions in the manufacturing process? Second, the characteristics of polishing abrasive materials Polishing abrasive materials can be used to process various surfaces of metal and non-metal materials, such as planes, cylinders, conical surfaces, threads, tooth surfaces, spherical surfaces, etc. In addition, the polishing abrasive material also has the following characteristics: 1. Manual grinding is used for single-piece small batch production, and mechanical grinding is used for large batches. The hardness of the grinding tool should be lower than that of the workpiece, and the wear resistance is better. The commonly used materials are gray cast iron, mild steel, brass, red copper, etc. 2. Abrasives are mixtures of abrasives and grease, and are available in three types: liquid, paste and solid. 3. In order to reduce cutting heat, grinding is generally carried out under low pressure and low speed conditions. During rough grinding, the pressure is less than 0.3 MPa, and the speed is 20-120 m/min; during fine grinding, the pressure is 0.03-0.05 MPa, and the speed is 10-30 m/min. 3. Matters needing attention in the manufacturing process of polishing and abrasive materials In the production process of polishing and abrasive materials, it mainly includes before, during and after production. these three steps. 1. Polishing and abrasive material is a kind of finishing process on the machined surface through the relative movement of the grinding tool and the workpiece under certain pressure by using abrasive particles coated or pressed on the grinding tool. 2. The workpiece should be pre-processed by fine grinding before grinding, and the grinding allowance left is generally 0.005-0.03 mm. 3. After grinding, the machining accuracy can reach IT5-01, and the surface roughness can reach 0.63-0.01 microns. After understanding the characteristics and precautions of the above-mentioned solid polishing wax, sand disc, dust-free dry grinder and other polishing and abrasive materials, what criteria should we choose according to when choosing polishing and abrasive materials? 4. Criteria for selecting polishing and abrasive materials: The type, shape and particle size of the polishing material are selected according to the base material and polishing requirements of the workpiece to be processed. Usually metal parts are polished with hard polishing abrasives, and soft parts such as plastics are polished with a mixture of animals and plants and hard polishing abrasives. When polishing the surface with high quality requirements, polishing and abrasive materials with a relatively smooth shape should be used. The size of the polishing abrasive material should be smaller than 1/3 of the inner hole of the part, but not too small to prevent the hole from being blocked by the polishing abrasive material. white wax Because the surface hardness of the polished metal needs to be higher than the hardness and toughness of the polished product, otherwise the grinding cannot be achieved. Solid polishing wax has good heat resistance and thermal stability. During the polishing process, the friction of the high-speed rotation of the polishing wheel is a dramatic increase in the temperature of the polishing surface. (The temperature can reach more than 120-500) If the abrasive is easily decomposed, the hardness and toughness will decrease, which will affect the polishing effect. It has good stability at working temperature and solid polishing wax, without any chemical reaction, solid polishing wax polishing surface or solid polishing wax and inherent mechanical properties change, which affects the smoothness of polishing surface. In the process of preparing materials for the production of solid polishing wax, first of all, the materials with various water ratios are not necessary to be said, and then the paste materials are mixed with welding and heating to melt. After stirring evenly, slowly grind the materials until they have melted and mixed with oil. Mix the solution, stir and melt to mix, add additives, stir slowly evenly, well control the melting temperature of the cavity material can not be too high or burn, heat evenly, the wax solution on the body surface is mixed evenly and shiny, stop heating, stir to make the temperature drop slowly, when the temperature Drop to a suitable discharge temperature, add the wax solution to the wax solution prepared for the cooling surface of the mold to solidify, cool it in cold water and release the mold, and then put the wax dry water into the box for packaging. Therefore, it must be used within the shelf life, and the solid polishing wax does not have the polishing effect of the expired product.
