20M Marine Ship Launching Airbags HDPE High Pressure Air Bags
Ship Launching Airbags Marine Airbag 20 Meters Rubber Airbag High-Pressure Air Bags
|Diameter||Rated Pressure MPa||Explosion Pressure Mpa||Working height Meter||Guaranteed bearing capacity per unit length ton/m|
|D=1.2m (D=3.94 ft)||0.19||≥0.85||0.48||21.48|
|D=1.5m (D=4.92 ft)||0.15||≥0.68||0.60||21.20|
|D=1.8m (D=5.90 ft)||0.13||≥0.59||0.72||22.04|
|D=2.0m (D=6.56 ft)||0.11||≥0.50||0.80||20.72|
How to repair the airbag?
For the marine rubber airbag with small damage, as long as no serious aging (surface without cracking and tacky ) all can be repaired. Recommend using the heating method, process as below:
1. Clean airbag surface:
2. Put the Nylon rubber:
The shipyard can make a working platform as shown in the picture and prepare Jack, U-steel, steel heating plate, cotton cushion, sandbag, steel plate. The heating steel plate thickness is 25mm, Length is 0.5m, width is 0.4m, all four corners, and edges should be smooth.
Put the airbag in the center and heat the steel plate, using the thermometer to check the temperature of the steel plate. When the temperature rises to 150 ±5 degrees centigrade, can be put on the cotton cushion and the damaged airbag area, tight the Jack (pressure up to about 0.6MPa). With steel plate cooling, the heating process can be finished (takes about 40 minutes ). If the damaged place is larger than the heating steel plate, heat the center first, then heat the two sides in order. When heating the next part, the heating steel plate should overlap 15mm in the position of the last heating place.
Checking if the repaired area is sealing tightly, don’t allow internal bubbles, peeling off layers, etc. The new repairing rubber can’t have an aging crack, underheated, or overheated. Do the pressure test after surface inspection, the testing pressure should be 1.2 times the working pressure.
Warning: The seriously damaged airbag after repairing, should reduce the working pressure.
5. Airbag not suitable for repairing:
To ensure safety, the airbag is not suitable for repairing if there are one of the following situations :
1. 8 years or longer since the original shipment.
2. The bursting airbag is caused by a serious violation of the rules of use and exceed guaranteed safety work pressure.
3. Seriously damaged airbag, such as horizontal cracks larger than 1/3 of the circumference. Longitudinal cracks are longer than 2m or cross damage fractures.
4. The airbag surface is severely aged, cracked, and sticky, Nylon is rotten.