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Due to the performance advantages of white fused aluminum oxide, such as high hardness, good toughness, high specific gravity, and no harmful substances, white fused aluminum oxide is a natural and environmentally friendly grinding material, which plays an important role in the international blasting treatment industry. However, in addition to white fused aluminum oxide, brown corundum, green silicon carbide and other abrasives are also often used for spray grinding, so what are the main advantages of white fused aluminum oxide compared to them? In addition, what is the specific ratio of glass beads and white fused aluminum oxide used in sandblasting?
It is understood that white fused aluminum oxide currently used as a blasting medium accounts for 45% of all industrial usage. White corundum usually used as a blasting medium is required to be composed of iron-aluminum garnet, because iron-aluminum garnet contains different main end member molecules, which meets the hardness requirements of the industry. Among various spray abrasives, the advantages of white fused aluminum oxide mainly include the following points:
The more uses the product has, the more elastic the demand is. The more substitutes there are for a certain product, the closer the substitutes are, the greater the elasticity of demand. Because there are many substitutes, the price will rise, and consumers will buy other products. For most products, the increase in sales will be more pronounced when the product is at a high price point.
White corundum is used for surface blasting treatment. Due to its relatively high specific gravity, less dust is generated during the blasting process. This ensures operator health and safety and improves operator visibility. Compared with slag (in the process of slag formation, cold water or even sea water is used for high-temperature cooling, so it forms a glass phase structure and is brittle), because slag is relatively brittle, it is easy to be smashed into small pieces during the spray grinding process. particles. Due to the relatively small proportion of slag, small slag particles are suspended in the air, causing environmental pollution. Likewise, quartz sand is a very brittle abrasive.
Under a certain pressure, white fused aluminum oxide can hit the surface of the object with a large number of sharp edges and corners quickly, so it is regarded as a very fast grinding method. The acceleration and velocity of the particles in the gas flow are a function of the inertia of the white fused alumina and the particle size. The smaller the particle, the easier it is to accelerate and therefore produce a higher impact force against the surface, resulting in a very high cleaning speed - typically, this speed is twice as fast as other conventional abrasives.
About 4:1 (mainly according to your own observation of the matt degree of the surface, customers are using the ratio of glass pellets to 1:1), the less white corundum, the better the matte effect. Adding some white corundum still wants to improve the shot peening efficiency, and at the same time eliminate minor scratches on the stainless steel surface faster. If it is a liquid sandblasting room, the amount of sand added is about 75-125kg; first add glass pellets in proportion, and then add white corundum several times, so that it is easier to control the surface matte effect.
