The content of aluminum (Al) in white corundum powder is higher than 98.5%, its hardness is slightly higher than that of brown corundum, its toughness is slightly lower, its purity is high, its self sharpening is good, its grinding force is strong, its calorific value is small, its efficiency is high, it is resistant to acid and alkali corrosion, its high temperature resistance is above 1750 degrees, and its thermal stability is good.
Its abrasive tools are suitable for grinding materials with higher hardness and higher anti swelling hardness, such as high carbon steel, high speed steel and quenched steel. They can also be used as grinding and polishing materials, precision casting, spraying materials, chemical catalyst carriers, special ceramics, grinding wheels, steelmaking, advanced refractory materials, etc. It is characterized by strong cutting force, good chemical stability, and good insulation.
Through continuous technical improvement and industrial trial, white corundum abrasive has been recognized by the majority of customers. White corundum has high hardness, good self sharpening, excellent grinding and polishing performance. At the same time, through technical improvement, the production cost has been slightly reduced. In the electric melting process of white corundum, it has become complex due to chemical reaction, homogeneous polycrystalline transformation, recrystallization, and eutectic, However, it is mainly realized by the fact that the powder has a large surface area and a high surface energy. During the preparation of the powder, various lattice defects appear on its surface and inside.
White corundum micro powder is made from high-quality aluminum oxide powder, refined and crystallized by electric melting. The white corundum micro powder can be used in precision casting and advanced refractory materials. It has high purity, good self sharpening, acid and alkali corrosion resistance, high temperature resistance, and stable thermal performance. The hardness of white corundum micro powder is slightly higher than that of brown corundum. The white corundum micro powder has low toughness, strong grinding ability, low heat generation, and high efficiency. The white corundum micro powder can be used to make grinding tools, White corundum powder can be used to grind fine abrasive materials such as high carbon steel, high-speed steel and stainless steel.
White corundum micro powder has good chemical stability, good insulation, white is harder and more brittle than brown corundum, strong cutting force, can be used as solid structure and coated abrasive tools, wet or dry jet sand, suitable for ultra precision grinding and polishing of crystal and electronic industries, and the production of high-grade refractory materials, suitable for processing hardened steel, alloy steel, high speed steel and high carbon steel, and other materials with higher hardness and tensile strength, white corundum abrasive can also be used as contact media, Insulators and precision casting sand, etc.
In addition, the white corundum micro powder does not affect the color of the machined parts, and can be used for sand blasting in the process where iron powder residues are strictly prohibited. The micro powder level is very suitable for wet sand blasting and polishing operations, with fast processing speed and high quality, and extremely low iron oxide content, which is suitable for sand blasting operations where iron residues are strictly prohibited.
traditional preparation of white corundum micro powder is to process, finely grind, and then water classify the white corundum blocks made from raw materials by smelting them in an electric arc furnace at high temperature, and then divide them into white corundum micro powder with different particle sizes. Now, the preparation of white corundum micro powder, namely sintered white corundum micro powder, is to shape powdery raw materials, heat them at a temperature lower than their melting point, and make them adhere, bond, co melt, recrystallize, etc. under the action of additives, Sintering is dense and has specific properties.
White corundum powder is harder and more brittle than brown corundum, with stronger cutting force and good insulation. In addition to making solid structures and coated abrasives, wet or dry jet sand, white corundum micro powder is also suitable for ultra precision grinding and polishing in crystal and electronic industries, as well as making advanced refractories. White corundum micro powder has good insulation.