Why is garnet used as water jet sand?
One reason is that the hardness of garnet is very moderate. Compared to brown corundum abrasive, garnet can effectively protect water knives and reduce wear. Compared to quartz sand, garnet abrasive has a slightly higher hardness, can cut a wide range of materials, has a fast cutting speed, and has good results. Quartz sand contains high levels of chloride, which can easily cause corrosion on the inside of the water jet.
Secondly, due to its moderate hardness, garnet can be reused multiple times and has a high cost-effectiveness