Hanger shot blasting machine is a type of industrial equipment designed for cleaning, surface preparation, and finishing of workpieces by blasting them with abrasive materials like steel shot or grit. The term “hanger” refers to the machine’s design, where workpieces are hung on hooks or hangers that move through the machine for blasting.

Hanger Shot Blasting Machine Key Feature

Hanger Design:

Workpieces are suspended from hooks, hangers, or trolleys. These hooks can rotate or move along a track for even blasting coverage.
The hanger system is ideal for cleaning complex or delicate shapes without direct contact.

Blasting Process:

Abrasive material is propelled at high speed onto the surface of the workpiece using turbines or air nozzles.
This removes rust, scale, old paint, or contaminants and prepares the surface for coating or further processing.

Rotational Cleaning:

The hangers often rotate during the blasting process to ensure all sides of the workpiece are evenly cleaned.

Applications:

Metal components: Castings, forgings, and welded structures.
Automotive parts: Engine blocks, gearboxes, and frames.
Steel structures: Beams, girders, and sheet metal.
Ideal for heavy, bulky, or oddly shaped workpieces.

Material Recovery:

The abrasive material is collected, cleaned, and reused in a continuous cycle, minimizing waste and operational costs.

Types of Hanger Shot Blasting Machine:

Single Hanger Machines: Designed for batch processing.
Continuous Hanger Machines: For high-volume, continuous production lines.

How Hanger Shot Blasting Machine Works

Hanger shot blasting machine works by using abrasive blasting to clean or prepare the surface of workpieces. The process is automated, efficient, and designed to handle heavy, complex, or irregularly shaped parts.

1. Loading the Workpiece
   Hanging:
   Workpieces are mounted or hung on rotating hooks, hangers, or trolleys.
   These hangers are part of a conveyor system that moves the parts through the blasting chamber.
   Parts are spaced to ensure the abrasive material can effectively reach all surfaces.
2. Blasting Chamber
   The workpieces are transported into a sealed chamber, where the blasting process occurs.
   The chamber is designed to contain the abrasive material and prevent it from escaping into the environment.
3. Abrasive Blasting Process
   Turbine or Air Blasting:
   High-speed turbines or air nozzles propel abrasive media (e.g., steel shot, grit) onto the surface of the workpiece at high velocity.
   The impact of the abrasive removes rust, paint, scale, or other surface contaminants.
   Rotating Hangers:
   The hanger rotates the workpiece during blasting, ensuring all sides are evenly cleaned or prepared.
4. Abrasive Recycling
   The used abrasive material falls to the bottom of the chamber.
   A recovery system collects, cleans, and recycles the abrasive for reuse:
   Separator: Removes dust, debris, and broken abrasive particles.
   Elevator: Returns clean abrasive to the blasting turbines or nozzles.
5. Dust Collection
   A built-in dust collector removes fine particles and maintains air quality inside and around the machine.
   This ensures visibility and safety while preventing environmental contamination.
6. Unloading the Workpiece
   After blasting, the workpieces are moved out of the chamber.
   They are inspected to ensure the desired surface quality is achieved.
   Cleaned or prepared parts are ready for further processing, such as painting, coating, or assembly.

Hanger Shot Blasting Machine Application

Automotive
Aerospace
Metal fabrication
Construction
Foundry and forging industries

Advantages

Suitable for cleaning large and irregularly shaped parts.
Can handle multiple parts simultaneously.
Provides consistent surface finish.
Reduces manual labor and improves efficiency.

Conclusion

Hanger type shot blasting machine is mainly suitable for a variety of medium, large castings, forgings, welding, thermal treatment of the surface, including and irregular shape of the work piece. It is suitable for surface cleaning or strengthening of multi-variety, medium- and small-batch forging and riveting parts, especially for slender and thin-walled parts. It can apply strong shot blasting to the surface of steel in the original state, remove the surface rust spot, welding slag and oxidized skin to obtain the metallic gloss surface with uniform finish, in order to remove the stress and improve the surface coating quality and anticorrosion performance of steel.