How to derust the surface of sandblasting gun :
Manual or power tools should be used to remove rust on the parts that the sandblasting gun cannot spray.
I. Sand blasting abrasive control The sand used for sand blasting and rust removal is compared with the pre-blasting. Quartz sand and river sand are mixed with 1: 1 for best rust removal effect.
2. When the blasting gun controls the blasting operation, understand the nozzle wear. When the diameter of the orifice increases by 25%, the nozzle should be replaced.
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 temperature of the metal surface 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.