Metal windproof dust suppression net is an important facility for industrial dust control. Its windproof effect depends not only on the material, but also on the punching process. Different punching designs will directly affect the air permeability, structural strength and dust suppression efficiency of the net.

1. Punching shape and windproof principle
Metal dust suppression nets are mostly punched in round, strip or diamond shapes. Among them:

Circular holes: vortices are easily generated when air flows through, which has a significant effect on reducing wind speed, but may increase local wind pressure;

Strip holes: Directly guide airflow, suitable for sites with clear dominant wind direction, but less adaptable to multi-directional wind;

Diamond holes: Balance air permeability and strength, with the best comprehensive dust suppression effect, commonly found in high wind pressure environments such as ports.

2. The key role of punching rate (opening rate)
The punching rate refers to the proportion of the hole area to the total area of ​​the plate, which is usually controlled at 30%-50%:

Too high punching rate (>50%): increased air flow and decreased dust suppression efficiency;

Too low punching rate (<30%): excessive wind resistance, which can easily lead to structural deformation or surrounding air flow turbulence.

3. The influence of punching arrangement
Staggered punching: The holes are distributed in a plum blossom shape, which can disperse the wind pressure and improve the tear resistance of the mesh;

Straight punching: Simple processing, but weak wind resistance, need to increase the thickness of the plate to compensate.

4. Process accuracy and edge processing
Laser or CNC punching can ensure that the hole edge is smooth and burr-free to avoid stress concentration. If there are cracks or curling on the edge of the punching, it will accelerate metal fatigue and shorten the service life.