White alumina oxide 180#220mesh for sand blasting Semiconductor quartz products

White alumina oxide 180#220mesh for sand blasting Semiconductor quartz products

For sandblasting of semiconductor quartz products, white corundum is the preferred choice. The key points are high purity, low pollution, matching hardness, chemical stability, controllable particle size, and good self-sharpening performance, which perfectly meet the ultra-clean, precise, and low-damage requirements of semiconductors.

1. Ultra-purity, eliminating ion contamination (the lifeline of semiconductors)

2. Balance of hardness and toughness, efficient and low damage

3. Chemical stability + thermal stability, suitable for high-temperature / acidic and alkaline environments of semiconductors

4. Precise controllable particle size, controllable roughness

5. Good self-sharpening performance, long lifespan, and low cost

Description:

White alumina oxide uses high-quality alumina powder as raw material, smelted in an arc furnace at a high temperature of 2200 degrees to fully melt it, and then cooled naturally or cooled by water to fully crystallize the smelted alumina liquid. After the alumina powder is fully smelted, crystallized and cooled, it becomes the original block of white alumina oxide. After the original block of WFA grit is crushed by a jaw crusher, it is deeply screened in a five-screen vibrating screen in strict accordance with industry standards to obtain white corundum sand of different sizes. The proportion of basic particles and mixed particles in our factory’s particle size sand far exceeds the national standard, the particle size is more concentrated, and the use effect is better.

The Al2O3 content of white alumina alumina is greater than 99%, and its hardness is higher than that of brown fused alumina, but its toughness is not as good as that of brown corundum. The Fe2O3 content of WFA grit is very low, which is suitable for sandblasting operations where iron residue is strictly prohibited. At the same time, the material of white corundum is relatively hard, which is suitable for sandblasting with most sandblasting machines. It is also used as grinding and polishing materials, precision casting sand, spraying materials, chemical catalyst carriers, functional ceramics, refractory materials, etc.

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