How to set the parameters of automatic sandblasting machine when processing the surface of notebook frame?

The parameter setting of automatic sandblasting machine for processing the surface of notebook frame needs to be adapted around three cores: frame material (mostly aluminum alloy), surface requirements (such as deoxidation layer/wire drawing texture/matte effect) and processing efficiency. The key parameters and setting logic are as follows:

Abrasive selection: choose 80-120 mesh white corundum (oxidized layer+lightly roughening) or 150-200 mesh glass beads (fine and dull, without scratches) to avoid high-hardness abrasives (such as brown corundum) scratching the outer frame;

Sandblasting pressure: 0.3-0.5MPa, 0.4-0.5MPa for oxide removal layer and 0.3-0.4MPa for matte finish. Excessive pressure will cause the surface to be too coarse;

Sandblasting distance: 150-250mm, if the distance is too close, it is easy to spray locally, and if it is too far, it will affect the efficiency;

Sandblasting angle: 45-60, moving evenly along the curved surface of the outer frame to avoid excessive wear of corners caused by 90 vertical spraying;

Gun speed: 50-80mm/s, match the conveyor belt speed (for example, 1-2m/min) during batch processing, and ensure that the sandblasting time of each surface is consistent (about 2-3s) to ensure uniformity.