What Are The Performance Advantages Of High-temperature Calcined Brown Corundum Abrasive?

Compared with ordinary brown corundum, the production process of brown corundum abrasive is more difficult, because ordinary brown corundum needs to be calcined twice at about 1400.
After the brown corundum abrasive is calcined at a specific temperature, the corundum turns blue. The impurities in the brown corundum precipitate or vaporize, and the particle surface becomes rougher, greatly improving the hydrophilicity of the brown corundum. After high temperature calcination, the microcracks in the process of crushing and crystal cooling can be healed, greatly improving the toughness and strength, thus improving the abrasive wear resistance. The weak magnetic field of brown corundum is converted into strong magnetic field and purified by magnetic separation.
Performance advantages of brown corundum abrasive:
1. Improve the magnetic induction of abrasive: the weak magnetic field can be converted into a strong magnetic field, which can remove magnetic substances smoothly.
2. Improve the hydrophilicity of abrasive: increase the hydrophilicity by 2-3 times.
3. Improve the recoverability of abrasives: high temperature can effectively repair the cracks of abrasives during heavy load crushing, which is conducive to the healing of crystal cracks.
4. Improve the bonding strength: during the high-temperature sintering process, the impurities on the abrasive surface are vaporized, which increases the specific surface area of the particles, and the bonding between the abrasive and the cloth base is stronger.
5. Improving durability: The durability of high-temperature abrasives is more than 40% higher than that of ordinary brown corundum.
After calcination, impurities such as volatiles on the abrasive surface are removed, and the purity and cleanliness of the abrasive are improved. Therefore, in the manufacturing of abrasive tools, the binding force between abrasive particles and binder is increased, the amount of binder is reduced, and the strength of abrasive tools is improved. High temperature calcination of brown corundum abrasive is mainly used for high speed and strong abrasive belt, advanced consolidated abrasive, resin grinding wheel, abrasive paper sand table, large cutting parts, etc. Suitable for grinding stainless steel plate, alloy steel and hard alloy. The shell mold involved in the production has stable thermochemical properties, high fluidity and no delamination.
Brown corundum abrasive has been used in the casting industry for many years, and has also been widely used abroad. The abrasive is made of bauxite, coke (anthracite) and iron chips as the main raw materials, purified and crystallized in the electric arc furnace through high temperature melting. It has the characteristics of high hardness, large toughness, sharp particles, strong grinding force, high temperature resistance and high efficiency.
Abrasive tools made of brown corundum are suitable for grinding metals with high tensile strength. They can cut and grind all kinds of general steel, carbon steel, general alloy steel, malleable green steel, hard green steel, etc. They can also be used as advanced refractory materials and are widely used in steel, chemical and other industries.