The 5 Energies
The capital spend difference between dry abrasive blast equipment with negative air containment and high pressure water cleaning surface preparation equipment (water recovery and flow-through tarps) can slash your overall surface preparation spend by ~ 50%. Naturally, those costs savings can easily be eaten by labor costs if you do not have the right equipment.
Field experience has shown that 480 bar / 23 lpm hot water (60C) with rotating tip provides the ultimate impact, and balance between effectiveness, efficiency and worker safety.
Pressure & Volume:
When it comes to cleaning, pressure alone is not enough – you also need adequate flow to do an effective cleaning job. The pressure is for cleaning, the volume is for washing.
Field experience suggests that 23 lpm (6gpm) +/- 10%) volume does an excellent washing job and a pressure point of 480 bar (min 350) has produced an adequate cleaned steel substrate for overcoating or recoating with HRCSA.
Heat
Makes removal of salts and contaminants from the surface more effective. Here, field experience has shown that 60C does a superb job at optimizing contaminant removal during cleaning.
0 Degree Rotating Tip
Field experience confirms that 0 degree rotating tip “Cutting nozzle” is needed to remove undercutted coating systems, flush out corrosion pits and open up capillary channels inside pack-rust corrosion cells located inside joints and connections.
Salt Remover Additives
Combining the above mentioned forces with a salt removing chemistry provides assurance that
Example of a 480 bar / 23 lpm / hot water with rotating tip cleaning operation at work.
Example of multi-nozzle pressure washing clamp preparing steel for overcoating with HRCSA