|How is the finer grained brown corundum abrasive made?|
|Release time: 2019-4-22|
Brown corundum abrasives, like SG abrasives, belong to the corundum abrasive polycrystalline, but they are also very different.
Brown corundum can produce better self-sharpening under the condition of small grinding force (such as low-speed grinding discs). When the abrasive receives the grinding force, its passivation part will decompose along the crystal plane. A new front appears and participates in the cutting action, and the self-sharpness effect is proud to be realized. To put it simply, brown corundum is continuously producing layers that can be ground, and the matte surface is flattened, and new ones will appear immediately for grinding.
This type of brown corundum fine-grained abrasives are sintered at low temperature. When the abrasive is sintered at high temperature, it will be affected by high temperature, which will promote the growth of grains and destroy the original microcrystalline structure and performance. In order to give full play to the performance, a special high-efficiency low-temperature binder has been developed, which can reduce the firing temperature of the grinding tool to as low as 1000 ¡ã C.
Ultrafine grain size and brown corundum abrasives with special performance requirements, such as ultra-fine grinding stones used in automotive shock absorbers, textile machinery, bearings and other industries. At the same time, because the particle size is required to be extremely fine, the decomposition and oxidation and reaction capabilities at high temperatures are relatively strong.
In order to reduce the degree of decomposition and oxidation of ultra-fine brown corundum, on the one hand, it can also enable brown corundum abrasives to meet the requirements of ultra-fine low-temperature processing, and try to purchase low-temperature binders. In this way, the requirements of both parties can be met.
Today ’s sharing, here it is, it ’s me, Xiao Cao, who sells refractory materials, I wish you a prosperous business and a happy life!