How to derust the surface of sandblasting gun :
Manual or power tools should be used to remove rust from the parts that the sandblasting gun cannot spray.
I. Sandblasting Abrasive Control The sand used for sandblasting and rust removal. After pre-blasting comparison, it is best to mix quartz sand and river sand at a ratio of 1: 1.
2. When the blasting gun controls the blasting operation, understand the nozzle wear and tear, and replace the nozzle when the orifice diameter increases by 25%.
3. Sandblasting environment control In view of the fact that sandblasting and rust removal of hydraulic metal structures is an open-air operation, in addition to dust prevention and environmental protection during construction, the ambient temperature, humidity and metal surface temperature of the construction site must be tested daily to calculate the dew point of the day Make good construction records.
4. Before the rust-removing sandblasting gun, carefully inspect the surface of the metal structure substrate, remove attachments such as welding slag and splashes, and clean the surface grease and soluble dirt. Also useless welding bodies or joints should be properly treated.