Sound insulation door features
The structure of the soundproof door frame is basically the same as that of the wall and the soundproof board used for the top. The whole door is made of double magnetic sound pad or through the corresponding sealing strip to achieve sound tightness.
Bottom closed compression design: Closed compression design at the bottom of the soundproof door. This closed compression design uses the top hinge adjustment screw to move the entire door vertically in the door frame for adjustment. The minimum acceptable standard for acoustic paneling of doors is the test standard for STC47 in accordance with ASTM E90 and ASTM E413.
Sound insulation observation window: double-sided tempered glass is installed, the glass thickness is at least 10mm, and the gap around the glass is sealed by a synthetic rubber gasket. The distance between the double glazing is 60mm. A galvanized cold-tempered embossed panel is used to isolate the sound absorbing frame in its interlayer.
It conforms to the national standard GB/T16403-1996 "Pure tone air conduction and bone conduction hearing threshold basic audiometry" standard.
Sound insulation door process
The wooden frame is used to wrap the artificial leather in the artificial leather and the 1.5mm thick cold-rolled steel plate is used to form the sound-absorbing cotton. The multi-layer sound insulation structure is subjected to gas high temperature and pneumatic load. When the door is opened, the whole door floats up. When closed, the magnetic sealing edge strip is completely closed, ensuring that the edge leakage sound is eliminated and the strength meets the operation requirements.
Selection criteria for wood acoustical door wood: The wood should be dried by dry method. The moisture content should not exceed 12%. When restricted by conditions, except for the easily deformed tree species such as Northeast Larch, Yunnan Pine, Masson Pine and Birch, Air-dried wood can be used, and its moisture content should not be greater than the local equilibrium moisture content. It is advisable to use high quality wood treated with flame retardant treatment;
The steel door of the steel door is made of cold-rolled steel, the surface layer is thin steel plate (stainless steel), and is filled with porous sound-absorbing material to obtain high damping characteristics of acoustic coupling; thresholds, thresholds and thresholds are also used. Profile steel is manufactured to ensure sufficient strength and support stiffness;
A double special elastic stop (seal) and a pressing device are installed around the door to completely eliminate the leaks caused by the "hole" and "gap". The inside of the door frame is filled with fireproof sound insulation material, the outer steel plate is wrapped, and a rubber strip is arranged in the sealing groove at the door frame mouth;
The door leaf is made of a thin steel plate, and the outer side of the door leaf and the inner side panel of the door leaf are longitudinally provided with steel reinforcing ribs; the outer side edge of the door leaf is provided with a sealing groove along the side length, and a magnetic sealing strip is fixed in the groove;
The edge of the inner panel of the door leaf protrudes into an angular cutting edge, and is tightly sealed with the rubber strip on the door frame;
The filling material shall comply with the provisions of Article 7 of GB5464-85 of the Test Method for Noncombustibility of Building Materials;
The glass shall be qualified products that do not affect the fire resistance test of the fire door;
According to the quality rule, the heavier the quality of the object, the better the sound insulation. In order to achieve the sound insulation effect, the 4cm thick steel plate can be used as the door panel or the cement in the door panel to improve the quality and improve the sound insulation effect, while considering the sound insulation. The effect reaches the burden of the door anklet on the weight of the door panel. The inability of the anklet to fully load will cause the door leaf to be unable to be easily switched or even cause damage to the anklet. When the soundproof door is designed, the weight can be reduced as much as possible within the required sound insulation effect;
The hardware accessories shall be the matching supporting products that have passed the test by the national fire testing agency.
Application areas:
Pure tone audiometry, tinnitus examination, hearing aids, brainstem evoked potentials, otoacoustic emissions, sound field audiometry and other medical precision detection; large high-end hotels, restaurants, commercial buildings, equipment room, factory and personnel-intensive, evacuated acoustic sites, such as The studio, the studio, the theater, and the concert hall have a series of acoustic requirements for office, activities, and research.
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