How to determine if the shot blasting speed matches the shot blasting machine's specifications.

The key to determining whether the shot blasting speed of a machine is appropriate lies in observing the effect on the workpiece surface.

First, shot blasting speed refers to the velocity of the abrasive media, which directly impacts the surface treatment outcome. If the speed is too low, the media cannot effectively strike the workpiece surface, making it impossible to remove contaminants and oxides; conversely, if the speed is too high, it can cause excessive wear and deformation of the part's surface. Therefore, the speed must be adjusted according to the workpiece material and processing requirements. Generally speaking, the speed should be 60–80 meters per second for metal workpieces and 40–60 meters per second for non-metallic workpieces.

Additionally, factors such as the blasting volume, cleaning time, and projection angle must be considered. Blasting volume refers to the quantity of media projected per unit of time, directly influencing the machine's processing efficiency. Cleaning time refers to the duration the workpiece is processed within the machine, directly affecting the number of impacts and the quality of the treatment. The projection angle refers to the angle between the direction of the media stream and the workpiece surface, which directly impacts the impact force and the resulting treatment effect.

In summary, to assess whether the shot blasting speed is appropriate, one must comprehensively evaluate the surface treatment results—including the degree of contaminant and oxide removal, the extent of surface wear, and whether the desired quality has been achieved. At the same time, depending on the specific material and the requirements for processing the workpiece, other key parameters of the shot blasting machine—such as the shot blasting intensity, cleaning time, and spray angle—are adjusted to achieve the best surface treatment results.