Application of garnet sand in hull sandblasting
The application of garnet sand in hull sandblasting is mainly reflected in the following aspects:
1. Physical property adaptability
Moderate hardness
Garnet sand has a Mohs hardness of 7.5-8, which can effectively remove rust, old coatings and pollutants on the surface of the hull without causing excessive damage to the metal substrate.
Adjustable particle size
The particle size ranges from 8 mesh to 3000 mesh. The coarse particle size is suitable for rapid rust removal, and the fine particle size can be used for fine polishing to meet the sandblasting needs at different stages.
Self-sharpening and durability
Garnet sand can still maintain sharp edges after crushing, and can be recycled for multiple times to reduce material consumption costs.
2. Economic benefits
Controllable cost
Compared with other abrasives, garnet sand is moderately priced and widely available. Combined with its reusable characteristics, the overall processing cost is lower.
Efficiency improvement
The sandblasting speed is fast, which can shorten the hull maintenance cycle and reduce downtime.
3. Environmental protection and safety
Non-polluting property
Garnet sand does not contain harmful substances such as free silicon, and there is no dust pollution during the sandblasting process, which meets the requirements of industrial environmental protection.
Operation-friendly
After water washing and screening, it is clean and dust-free, ensuring the health and safety of operators.
4. Application effect
Surface treatment quality
After sandblasting, the surface of the hull presents a uniform rough surface, which enhances the adhesion of the coating and prolongs the service life of the anti-corrosion coating.
Wide applicability
In addition to the hull, it can also be used for the surface treatment of other large metal components such as petrochemical equipment and building steel structures.
5. Industry recognition and prospects
Garnet sand has been widely used in shipbuilding, military industry and cutting-edge industrial fields, and its performance advantages have promoted its continued penetration in high-end manufacturing.
