Brown Fused Aluminium Oxide sandblasting and rust removal extend the durability of the coating film, and also facilitate the leveling and decoration of the coating. It removes impurities, parti-colour, and oxide layers from the surface, while roughening the surface of the medium, removing residual stress in the workpiece, and improving the surface hardness of the substrate. Below, let me tell you about the commonly used sandblasting and rust removal methods for brown Fused Aluminium Oxide.

Brown Fused Aluminium Oxide material has ideal rust removal effect, fast speed, and low cost; In addition, surface preparation can also be made for processes such as painting, spraying, electroplating, etc. The surface treated by sandblasting can meet the requirements of a clean and rough surface, thereby improving the adhesion between the covering layer and the workpiece.

The commonly used sandblasting methods for rust removal include dry sandblasting, wet sandblasting, dust-free sandblasting, and high-pressure water sandblasting.

1. Dry sandblasting has a large amount of dust, which is harmful to environmental protection and health;
2. Although there is no dust in wet methods, moisture can cause the surface to rust again. The method of prevention is to add 1% to 15% rust inhibitors (such as trisodium phosphate, sodium carbonate, sodium nitrite, etc.) and emulsifiers or soapy water to the water, so that the surface will no longer rust in a short period of time, and then apply maintenance primer.
3. Dust free sandblasting is a continuous cycle of sand addition, sandblasting, and sand collection recovery in a closed system to prevent dust from flying.
4. High pressure water sandblasting is mainly used for large-scale rust removal, such as ship hulls, oil tanks, boilers, etc. Passivation agents and soapy water are often added to the water.

Choose different abrasives based on different substrates and requirements. In principle, selecting abrasives of the same material as the substrate is the best way. Under a certain pressure, the higher the hardness of the abrasive, the higher the cleaning efficiency; The abrasive particles are small and the efficiency is relatively high.

Since the inner hole of the traditional Chinese patent medicines and simple preparations sand gun of the pressure feeding sand blasting machine is 6-12MM, the larger the abrasive particles are, the smaller the amount of particles passing through the hole diameter of the sand blasting gun is, the fewer points per unit area hit the workpiece surface, and the sand blasting efficiency is low.

On the contrary, the smaller the abrasive particles, the more particles pass through the aperture of the sandblasting gun, and the more points hit the surface of the workpiece per unit, resulting in higher sandblasting efficiency. However, if the diameter of abrasive particles is less than 0.05mm, like dust, the kinetic energy of impacting the surface of the workpiece is very small, without force, and the efficiency will not be high.