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How to adjust the shot blasting speed of the shot blasting machine
发布时间:
2026-07-31
Adjusting the shot blasting speed of a shot blasting machine requires a comprehe
Adjusting the shot blasting speed of a shot blasting machine requires a comprehensive consideration of the type of equipment, the material of the workpiece and the process objective, and precise control should be achieved through systematic steps. The ejection velocity usually refers to the linear velocity of the projectile ejection, which directly affects the surface treatment effect. Generally, it ranges from 40 to 120 meters per second, and the specific range needs to be adjusted according to the application scenario.
The adjustment of the ejection speed is mainly achieved by controlling the rotational speed of the shot blasting machine's impeller. The core methods include:
Adjust the motor power or inverter parameters
The ejection speed can be adjusted by changing the impeller speed. For instance, the hook-type shot blasting machine can indirectly manage the speed by controlling the current of the shot blasting machine. Under normal working conditions, the current should be maintained at 80% to 90% of the motor's rated value. When operating, start the machine without load first, and then gradually add materials to increase the current by 5 to 8A to avoid overloading.
Optimize shot parameters: The particle size and flow rate of the shot will affect the actual shot blasting effect. For example, for steel bridge deck shot blasting, steel shot with a diameter of ≤1.2mm should be selected, and the shot blasting speed should be controlled at 80-120m/min (about 1.3-2m/s), while for concrete shot blasting, mixed shot can be used and the flow rate can be adjusted to match the speed.
Dynamic adjustment of injection Angle
The Angle of the deflector plate needs to be optimized according to the shape of the workpiece. A 45° Angle is recommended for flat parts, and a 30°+60° compound Angle can be adopted for complex structural parts to ensure effective coverage of the shot.
Combined with the characteristics of the workpiece and the process requirements:
The shot blasting speed for metal workpieces is generally 60 to 80 meters per second, and for non-metal workpieces, it is 40 to 60 meters per second. The through-type shot blasting machine also needs to coordinate the traveling speed with the shot blasting power. For instance, when cleaning steel plates, the shot blasting speed should be 300-350r/min (corresponding to a shot speed of approximately 60m/s), and the traveling speed can be flexibly adjusted to achieve the best cleaning effect.
During the adjustment process, it is necessary to monitor the equipment status in real time, such as current fluctuations or shot blockage, and determine the optimal parameter combination through experiments to avoid excessive wear or insufficient treatment
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