The advantages of white fused alumina in sandblasting industry

- Jun 19, 2019-

The advantages of white fused alumina in sandblasting industry


Due to the performance advantages of high hardness, good toughness, high specific gravity and no harmful substances, white fused alumina, as an environmentally friendly abrasive material, plays an important role in the sandblasting industry. However, besides white fused alumina, brown fused alumina, green silicon carbide and other abrasive grits are also often used in sandblasting process. Then, what are the main advantages of white fused alumina compared to the other blasting abrasive grit?


It is understood that the white fused alumina currently used as a blasting material accounts for 45% in all industrial consumption. Among various sandblasting abrasive grit, the advantages of white corundum are as follows:


First, the dust content is very less.

Due to the high specific gravity, white fused alumina will produces less dust during the spraying process in sandblasting. This ensures operator health and safety and improves operator visibility. Compared with slag (the slag formation process is to use high temperature cooling with cold water or even sea water, so the glass phase structure is formed, which is brittle), its easy to be crushed and and formed into small grain because of the slag is relatively brittle. Due to the relatively small specific gravity,, small slag particles are suspended in the air, causing environmental pollution. Similarly, quartz sand is also a very fragile abrasive in sandblasting process. 


Second, super high efficiency.

White fused alumina, under certain pressure, can quickly hit the surface of the object with sharp edges and corners, so it is regarded as a very fast way of spraying in sandblasting. The acceleration and velocity of the particles in the air stream is the effect of the white fused alumina inertia and particle size. The smaller the particles, the easier the acceleration, and therefore the higher the impact force impacts 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.