Because of the functional advantages of white aluminum oxide , such as high hardness, good toughness, high specific gravity, and no harmful substances, white corundum is an environmentally friendly grinding material, which plays an important role in the spray grinding and cleaning profession. But in addition to white corundum, brown corundum, green silicon carbide and other abrades are often used to spray grinding treatment, so what are the primary advantages of white aluminum oxide compared to them? In addition, how much is the share of glass beads and white corundum used in sandblasting?
It is understood that the white corundum used as a grinding medium now accounts for 45 percent of all industrial consumption. Usually used as a grinding medium for white corundum, people require that white corundum is composed of iron aluminum garnet, because iron aluminum garnet contains different primary end element molecules, to meet the requirements of occupational hardness. In a variety of abrasive spray, the advantages of white corundum are mainly the following:
First, the amount of dust is very small
The more useful the product, the more elastic the demand, the more substitutes for a product, the closer the substitutes are, the greater the demand elasticity, because more substitutes, resulting in higher prices, customers will buy other products, for most products, when the product is at a high price, the sales will increase more significantly.
White aluminum oxide is used for external spray grinding treatment, because its specific gravity is relatively high, so less dust occurs during the spray process. This ensures operator health and improves operator visibility. Compared with slag (slag formation process is cold water or even seawater for high temperature cooling, so the formation of a glass phase structure, with brittle), because the slag is relatively brittle, in the spray grinding process, easy to be smashed to form small particles. Because the proportion of slag is relatively small, the formation of small slag particles suspended in the air, the formation of environmental pollution. Similarly, quartz sand is also a very fragile abrasive.
second . Efficiency
White aluminum oxide , under a certain pressure, can quickly hit the surface of the object with sharp edges, so it is regarded as a very fast spray grinding method. The acceleration and velocity of particles in the air flow are the effects of white corundum inertia and particle size. The smaller the particles, the easier the acceleration, the higher the impact on the surface of the object, resulting in a very high cleaning speed - typically, this speed (m2/hr) is twice as fast as other conventional abrasives.
Third, the share of sandblasting glass beads and white aluminum oxide
About 4:1(First or according to your own investigation of the degree of matte appearance, thoroughly use glass pellets to 1:1 share of the way have customers in use); The less white corundum, the better the matte effect, adding some white corundum or want to improve the efficiency of shot peening, together faster to clean up the slight scratches on the stainless steel surface. If it is a liquid sandblasting room, the sand amount is about 75-125kg; According to the proportion of the first to participate in the glass pill, in the number of times to participate in the white corundum, so it is easier to control the appearance of matte effect.
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https://www.xfabrasive.com/abrasive-material/white-aluminum-oxide.html
