GP steel grit: The hardness range is 40-50 HRC, the color is black and blue, and it is suitable for pretreatment of steel surface to remove oxide scale.
GL steel grit: The hardness range is 50-55 HRC, the color is blue, the hardness is higher than GP steel grit, and it is also suitable for steel surface pretreatment.
GH steel grit: The hardness range is 60-65 HRC, the color is grayish white, the hardness is the highest, and it can always maintain the edges and corners during sandblasting operations. It is suitable for occasions where a regular and hairy surface needs to be formed.
The effect of steel grit of different hardness on the use effect is mainly reflected in the following aspects:
Wear resistance and service life:
The higher the hardness, the better the wear resistance of the steel grit and the longer the service life. For example, GH steel grit has a high hardness and can maintain performance during multiple uses, reducing the frequency of replacement.
Steel grit with lower hardness (such as GP steel grit) is easy to be rounded during sandblasting, and its service life is relatively short.
Cutting ability and processing efficiency:
Steel grit with high hardness (such as GH steel grit) can cut and remove materials more effectively during sandblasting or grinding, improving processing efficiency.
Steel grit with lower hardness has relatively weak cutting ability and may require longer processing time.
Surface treatment effect:
Steel grit with high hardness can obtain smoother, rougher or more textured surface effects, which are suitable for occasions with high surface quality requirements.
Steel grit with moderate hardness (such as GL steel grit) can form a more uniform surface effect while removing oxide scale.
Equipment wear and cost:
Steel grit with too high hardness may cause excessive wear of equipment and increase equipment maintenance costs.
Steel grit with too low hardness may not effectively remove the oxide layer or rust on the surface of the workpiece, resulting in poor processing results, or even requiring reprocessing, increasing production costs.
Applicable scenarios:
GH steel grit is suitable for occasions that require high hardness and long life, such as roller processing in cold rolling mills.
GP and GL steel grit are suitable for general steel surface pretreatment operations, and the cost is relatively low.
Steel shot is widely used for descaling and rust removal treatment
How are steel shot and grit used to treat steel surfaces?
Steel shot is widely used for descaling and rust removal treatment
What are the unique characteristics of steel shot?
