Tunnel Shot Blast Machine

Key Benefits for Tunnel Type Shot Blaster

• Latest transport technology

• Highly efficient blast wheels

• Short blasting times

• Multiple machine sizes and variations

How Does A Tunnel Shot Blast Machine Work?

1. Workpieces are loaded:  Workpieces are loaded onto a conveyor system at the infeed end of the tunnel. This conveyor system can be a  powered  hook conveyor system or trolleys at floor level,  depending on the machine and the weight of the workpieces.

2. Blasting chamber: The conveyor system carries the workpieces through a long blasting chamber.  Inside the chamber, multiple blast wheels, typically with  wearing-resistant  liners, are strategically positioned on the sides and/or top of the chamber to ensure complete cleaning coverage as the workpieces pass through. The blast wheels propel a high-velocity stream of abrasive media, like steel shot or grit,  against the surface of the workpieces. This abrasive blasting action removes contaminants like rust, mill scale, old paint, and  oxidation  from the metal surface.

3. Abrasive media recycling:  After passing through the blasting chamber, the abrasive media falls down to a hopper located below the chamber. Here, an air wash system separates the reusable media from dust and spent abrasive particles. The cleaned abrasive media is then returned to the blast wheels to be reused.

4. Dust collection: A dust collection system  continuously removes dust particles generated during the blasting process from the chamber to maintain a clean working environment.

5. Unloading: Once blasting is complete, the conveyor system carries the clean workpieces to the exit end of the tunnel where they are unloaded.