Bar Shot Blasting Machine - Accuracy: 99 %

1. Loading the workpiece
   
   
   
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     The metal workpiece is placed on the roller conveyor.
     
   
   
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     Motor-driven rollers move the workpiece through the machine at a controlled speed.
     
   
   
   
   


2. 
   Entry chamber
   
   
   
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     Rubber curtains or seals prevent abrasive steel shots from escaping.
     
   
   
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     The workpiece enters the blasting chamber.
     
   
   
   
   


3. 
   Shot blasting chamber
   
   
   
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     High-speed blast wheels (turbines) rotate at about 2,5003,000 RPM.
     
   
   
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     These wheels throw steel shots at high velocity (around 6080 m/s) onto the surface.
     
   
   
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     The impact removes:
     
     
     
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       Rust
       
     
     
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       Mill scale
       
     
     
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       Old paint
       
     
     
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       Welding slag
       
     
     
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       Surface contaminants
       
     
     
     
     
   
   
   
   


4. 
   Abrasive collection
   
   
   
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     After striking the workpiece, the steel shots fall into a hopper below.
     
   
   
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     A screw conveyor collects the used abrasive.
     
   
   
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     A bucket elevator lifts it to the separator.
     
   
   
   
   


5. 
   Abrasive separator
   
   
   
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     Airflow separates:
     
     
     
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       Dust
       
     
     
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       Broken shots
       
     
     
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       Rust particles
       
     
     
     
     
   
   
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     Clean steel shots are returned to the blast wheels for reuse.
     
   
   
   
   


6. 
   Dust collection
   
   
   
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     Dust-laden air is drawn into a dust collector (bag filter or cartridge filter).
     
   
   
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     Clean air is released while dust is collected in bins.
     
   
   
   
   


7. 
   Exit cleaning
   
   
   
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     Air blowers or brushes remove any remaining steel shots from the workpiece.
     
   
   
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     The cleaned workpiece exits the machine, ready for inspection, painting, galvanizing, or further processing.
     
   
   
   
   

Process flow

Loading
 
Roller Conveyor
 
Entry Seal
 
Shot Blasting Chamber
 
Air Blow-off / Brush Cleaning
 
Exit Conveyor
 
Finished Product

Abrasive recycling flow

Blast Wheels
 
Steel Shots Fall
 
Screw Conveyor
 
Bucket Elevator
 
Air Separator
 
Storage Hopper
 
Blast Wheels (Reuse)

Main components

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  Roller conveyor
  


• 
  Blast wheels (turbines)
  


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  Blasting chamber
  


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  Steel shot storage hopper
  


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  Screw conveyor
  


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  Bucket elevator
  


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  Abrasive separator
  


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  Dust collector
  


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  Air blow-off system
  


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  Electrical control panel
  


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  Variable-speed conveyor drive
  

Advantages

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  Continuous operation for high production.
  


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  Uniform surface cleaning.
  


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  Reusable steel shots reduce operating costs.
  


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  Improves paint and coating adhesion.
  


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  Suitable for large and heavy steel components.
  

This type of machine is widely used in steel fabrication plants, shipbuilding, bridge construction, pressure vessel manufacturing, and structural steel industries for efficient, automated surface preparation.