In the internal mechanical blasting process the pipe surface is blast cleaned with dry-grit using a blast boom system. A highly concentrated stream of steel abrasive particles are projected at the surface. The goal is to remove rust, mill scale and contaminations in order to create the correct cleanness and surface roughness profile, beneficial for coating adhesion.
Advantages:
Improved capacity, quality and change-over time
Less wear parts and downtime
Reduction of operational costs
More evenly distributed surface pattern
Compatible with existing blasting equipment
Improvements in comparison with the existing wheel design of the 6″ and 8″ wheels:
Precision cast process which results in minimal vibrations
Integrated distributor and casing, so no adjustments required
Reduced blast wheel change-over time
Flow optimization of abrasives when entering the distributor area
Optimized design of blades
Higher output capacity
How it Works
Surface cleaning is accomplished by high power mechanical blast wheels accelerating abrasives with high impact against the pipe surface. For this, abrasives are fed through a grit channel towards the center of the blast wheel. From there, due to high speed spinning of the blast wheel, the abrasives are centrifugally propelled by the blades and thrown against the steel pipe surface.
