Ordinary train aluminum foam floor is composed of 1mm aluminum plate, 15-20mm aluminum foam plate, 1mm aluminum sandwich plate, aluminum foam density is about 0.5g/cm³, with excellent sound insulation, isolation function;No
combustion, good fire performance;The bending strength reaches about 20Mpa, and the service life is more than 30 years.Light weight, about half the weight of the board.
2. Make the inner lining of the carriage
Subway cars‘ lined with 20mm thick aluminum foam, which reduces noise by more than 20 decibels.The side lining of large line trains, high-speed trains and urban rail trains is made of 20mm aluminum foam board and 20mm polyurethane foam composite board, which have good heat insulation and sound insulation performance.
3. Make sound absorption lining of subway station
The side wall and top sound absorption board of subway station are made of perforated aluminum foam sound absorption board with a thickness of 10mm and a 20mm thick cavity at the back. The sound absorption and noise reduction effect is still good even in the humid environment of subway station, which is more than twice as good as that of other sound absorption materials.
4. Making the compartment wall
The foamed aluminum plate is used to make the passenger car partition wall, which has good sound insulation and vibration isolation function.
5. Making high-speed train floors
Aluminum foam flooring for high-speed trains is composed of 1mm aluminum foam board, 25-30mm aluminum foam board and 1mm aluminum sandwich board. The aluminum foam density is about 0.5g/cm³.Sound insulation above 20 db, vibration to reduce an order of magnitude, fire, corrosion resistance, bending strength to reach about 20Mpa, not collapse, service life of more than 30 years.
6. Make electrical cabinets
Use aluminum foam sandwich board (0.5mm aluminum, 5 ~ 10mm aluminum foam board, 0.5mm aluminum board) to make generators, motors, frequency converters, central air conditioning and other noise and electromagnetic wave equipment electrical cabinets, noise can be reduced by more than 20 decibels, shielding electromagnetic wave more than 90 decibels.
7. Making subway tunnel vent muffler
The noise of tunnel vents can be effectively reduced by using aluminum foam sound absorber as sound absorber.
8. Make train door sandwich
Aluminum foam plate as the door sandwich material, with excellent sound insulation, shock isolation, heat insulation, bearing the load, isotropic.
9. the production of high-speed railway sound insulation screen
The sound barrier of high-speed railway is made with the height of 2800mm, the thickness of the perforated aluminum foam sound absorption plate is 10mm, the air layer of 20mm is set at the back, and the back plate is galvanized steel plate.The inner side of the sound barrier is the bare surface of aluminum foam, which can absorb sound and the whole wall can be sound-proof to achieve the effect of efficient noise reduction.After the aluminum foam is soaked by the rain, the noise reduction function does not reduce, aluminum foam absorption shock absorption, in the train after the vibration, the rivet will not loose, long-term safety.
