What problems should be paid attention to when sandblasting with garnet abrasive
1. The humidity of the air.
When the relative humidity in the air reaches 85% or the surface temperature of the object to be sandblasted is less than 3 degrees Celsius, the sandblasting operation should be stopped.
2. Time interval between sandblasting and painting.
Generally speaking, the garnet sand should be painted immediately after sandblasting, so that the contact time between the object to be sandblasted and the air is short, and the dust and moisture content falling on the surface of the workpiece are small, which can maintain excellent sandblasting effect and achieve Longer coating life. The best time between sandblasting and painting is 4 hours, if it is more than 6 hours without painting, a secondary surface treatment must be carried out.
3. Detection of moisture and chloride content of pomegranate sand.
Sandblasting requires less than 1% moisture and chloride content of pomegranate sand. If the content of the two is too high, it is very easy to produce soluble salts.