Due to the high requirements of the soundproofing of the soundproof box, the soundproof box is designed as a three-layer structure. The soundproof box shell is made of 2mm thick high-quality cold-rolled electrolytic steel sheet and multi-layer damping soundproof material. The exterior is sprayed with environmentally-friendly paint finish and the inner layer. There are sound absorbing materials, etc., there is a sealing rubber pad on the door of the soundproof box, and the product test cable interface is provided in the box.
A 50mm thick egg-absorbing cotton is attached to the inner surface of the box, which has a good sound absorption effect.
There are four dampers at the bottom of the soundproof box to reduce the influence of external vibration sources on the soundproof box.
The soundproof box adopts a suspended structure, which can effectively reduce the spread of solid noise. It is made of multi-layer polymer composite sheet, which can reduce the weight of the box and improve the sound insulation effect.
The inner casing of the box is made of 2mm cold-rolled steel plate, which is made by stamping, welding, pickling, spraying, etc. The interior is made of 3-6 layers of damping, sound insulation and sound absorbing materials. Sound insulation wall panel.
It’s just not enough to fill the sound-absorbing cotton. Because whether it is steel plate or glass, under the action of sound waves, it will generate resonance in some frequency bands. When resonance occurs, the sound insulation will drop greatly. The solution is to apply a damping material on the surface of the steel plate or glass. The thickness of the damping material is in principle as thick as possible, and the best effect can be achieved when the thickness reaches 3 times the thickness of the steel plate or glass.