Abrasive Materials of Blasting

In abrasive blasting, abrasive materials are also very important. In this article, several abrasive materials will be introduced briefly. They are glass beads, aluminum oxide, plastics, silicon carbide, steel shot, steel grit, walnut shell, corn cobs, and sand.

Glass Beads

Glass beads are not hard as silicon carbide and steel shot. So, they are more suitable for dealing with soft and bright surfaces, and they are suitable for stainless steel.

Aluminum Oxide

Aluminum oxide is an abrasive material with superior hardness and strength. It is also durable, low in cost, and can be reused. Aluminum oxide can be used for blasting most types of substrate.

Plastics

Plastic abrasive materials are environment-protecting materials that are made from crushed urea, polyester, or acrylic. They can be manufactured in different sizes, hardness, shapes, and densities for different needs. Plastic abrasive materials are the best for mold cleaning and blasting.

Silicon Carbide

Silicon carbide is known as one of the hardest blasting abrasive materials, so it is suitable to deal with the most challenging surface. Silicon carbide can be produced in various sizes, from the coarse grit to fine powder.

Steel Shot & Grit 

Steel shot and grit are different in shape, but all come from steel. The steel shot is round, and the steel grit is angular. They are cost-effective because they are hard to improve the working efficiency and are recyclable to reduce the cost of abrasive materials. They are the better choices for deburring, shot-peening, removing the tough coating, and preparing for epoxy coating.

Walnut Shells

Walnut shells come from the walnut that we have in daily life. They are a kind of hard materials that can be used as the abrasive material. They can be used in polishing gems and jewelry and polishing most soft materials like wood and plastic.

Corn Cobs

Like the walnut shell, the abrasive material, corn cobs are also from our daily life, the dense wood ring of the corn cobs. They are very suitable for dealing with jewelry, cutlery, engine parts, and fiberglass and remove the containment from wood, brick, or stone.

Sand

Sand used to be a popular and major abrasive material in sandblasting, but fewer and fewer people are using that. There is silica content in the sand, which may be breathed in by the operators. The silica content can lead to serious illness in the respiratory system.

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