Materials that are difficult to cut require the use of a water jetting nozzle with an abrasive entrainment chamber.
A high pressure water nozzle inside the assembly creates a water jet. This pressurised water jet travels through the entrainment chamber at high speed to a focusing nozzle dragging the air in the chamber with it and creating a vacuum.
Abrasive material is fed into the side of the chamber under air pressure. The abrasive particles are sucked into the air around the water jet and accelerated into the water stream to emit from the focusing nozzle.
The carrier trolley speed is manually controlled by a pneumatic system. Cutting speed and positioning speed are individually controlled.
To make straight cuts the guide chain is attached to a 6.5 ft long guide rail.
Nozzle carrier mounted on a rail
The abrasive entrainment nozzle assembly is mounted on a pneumatically driven carrier trolley which runs on a tensioned guide chain allowing a constant traverse speed to be achieved.