SAR 6 Shot Blasting Machine – High-Power 6-Turbine Intensive Shot Blasting Tunnel
The SAR 6 is an industrial tunnel shot blasting machine with 6 turbines, designed for the automatic and continuous surface treatment of metal parts, with a 24-hour operating capability.
Thanks to its six high-performance impellers, it ensures homogeneous shot blasting without shadow areas, ideal for cleaning, deburring, surface preparation or mechanical reinforcement of parts.
Its continuous conveyor and shot recycling system ensures high productivity, controlled wear and consistent processing quality, even on large or complexly shaped workpieces.
The SAR 6 machine is a 6-turbine blast tunnel. It is an industrial machine of imposing size used for the automatic and continuous surface treatment of metal parts designed to work 24 hours a day.
Imagine a kind of “washing tunnel” for metal, but instead of soap and water, abrasive shot or stainless steel spheres are used to treat the surface. With the grit we obtain a significant and homogeneous roughness, with the stainless steel spheres we polish and reinforce the structure for better resistance to stresses.
Here are the key components and operation of this machine:
- The principle of shot blasting
Shot blasting consists of projecting microbeads or shot at a very high speed on a workpiece to:
- Clean (remove rust, scale or foundry residue).
- Deburring (smoothing out imperfections).
- Prepare the surface before painting or galvanizing (create a roughness so that the coating sticks better).
- Increase stress resistance .
- Why 6 turbines?
The turbines are the “heart” of the system. These are paddle wheels that use centrifugal force to propel the shot at a speed controlled by a PLC. The use of 6 impellers allows the workpiece to be covered from all possible angles in a single pass. They are usually strategically placed (top, bottom, and sides) to avoid “shadow areas” on parts with complex shapes (H-beams, frames, wide plates). For special applications, it is possible to design machines with a larger number of turbines.
- Tunnel operation
Unlike a blasting machine with a bin or table, the tunnel involves linear movement:
- The conveyor: The parts are placed on a bed of motorized rollers or suspended from an overhead rail that runs through the tunnel.
- The projection area: This is the heart of the machine, armored with 10 to 20 mm manganese steel plates, ultra-resistant to prevent wear of the walls.
- Recovery: The shot falls through a grid, is collected by an auger, cleaned of dust by a magnetic or draught separator, and then returned to the turbines for further projection against the surface.
