Roller Marine Inflatable Rubber Airbag for Vessels Pull
Ship launching airbags are to be constructed of a cylindrical body and two conical heads (one at each end). Ship launching airbags with lots of advantages, such as easy to operate, time saving, saving investment safety, etc.
Major Strengths of Ship Launching Airbags:
High level of safety: Equipped with a reliable safety valve, our airbags can stand the maximum pressure up to 4 times that of the operating pressure.
Good air tightness: Pressure decreases less than 10% for a period of 24 hours.
Long lifespan: It is guaranteed that our airbags can sustain their designed operating pressure for 3 years.
Specification
1. Structure
2. Diameters: 0.8 m - 2.0 m or customized.
3. Length: 6 m - 20 m or customized.
4. Loading Capacity: about 10 T/M to 40 T/M.
5. Grades:
Ordinary airbags - 3, 4 or 5 layers of synthetic-tire-cord.
High bearing capacity airbags - 6, 7 or 8 synthetic-tire-cord.
Super high bearing capacity airbags - 9, 10 or more layers of synthetic-tire-cord.
6. Accessories: Pull ring, iron airlock, tee joint, pressure gauge, ball valve, hose joint etc.
7. Technical Data of Ship Launching Airbags
| Model | Diameter (m) |
Initial pressure (KPa) |
Rated working pressure, Pe (KPa) |
Bearing capacity (kN/m) | Minimum burst pressure (KPa) |
| QP3 | 0.8 | 25 | 130 | 114 | 390 |
| 1.0 | 18 | 100 | 110 | 300 | |
| 1.2 | 15 | 85 | 112 | 260 | |
| 1.5 | 13 | 70 | 115 | 210 | |
| QP4 | 0.8 | 35 | 170 | 149 | 510 |
| 1.0 | 25 | 130 | 143 | 390 | |
| 1.2 | 20 | 110 | 145 | 330 | |
| 1.5 | 16 | 90 | 148 | 270 | |
| 1.8 | 14 | 80 | 158 | 240 | |
| QP5 | 0.8 | 48 | 210 | 184 | 630 |
| 1.0 | 35 | 170 | 186 | 510 | |
| 1.2 | 28 | 140 | 185 | 420 | |
| 1.5 | 20 | 110 | 181 | 330 | |
| 1.8 | 16 | 90 | 178 | 270 | |
| QP6 | 1.0 | 45 | 200 | 219 | 600 |
| 1.2 | 32 | 165 | 217 | 490 | |
| 1.5 | 25 | 130 | 215 | 390 | |
| 1.8 | 20 | 110 | 218 | 330 | |
| Note: 1. Rated working pressure:±5%. 2. Compress deformation: ±2%. 3. Bearing capacity: one meter airbag at a deformation rate of 70%, internal pressure equivalent to the rated pressure value of Pe. | |||||
9. Rubber Material Test:
| No. | Test item | Required value | Test method | |
| 1 | Tensile Strength, MPa | ≥ 18 | ISO37 | |
| 2 | Elongation at break, % | ≥ 400 | ISO37 | |
| 3 | Hardness, shore A | 60±10 | ISO7619-1 | |
| 4 | Tear Strength N/cm | ≥ 400 | ISO34-1 | |
| 5 | Compression set, % (70 ºC ± 1 ºC, 22 h) | ≤ 30 | ISO815-1 | |
| 6 | After thermal aging at (70 ºC, ±1 ºC, 96 h) |
Holding of pull lengthening,% | ≥ 80 | ISO188 |
| 7 | Holding of elongation at break,% | ≥ 80 | ISO188 | |
| 8 | Change of hardness, hardness | ≤ 8 | ISO7619-1 | |
| 9 | Static ozone aging at 40 ºC*96 h, {ozone concentration( 50±5)*10} |
No crack | ISO1431-1 | |
10. Reinforcing Material: the warp should be (90±5) cord per 100 mm in width, and the breaking strength shall be more than 205 N per cord.
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11. Appearance: The appearance of an air bag shall be smooth, glossy and without blemish such as crack, blister, delamination pits or impurities.
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12. Dimensional Tolerances:
The length and diameter of an airbag shall be measured with the rated working pressure and be within ±3%.
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13. Ship Launching Airbags Performance:
| D (M) |
(4-5 layers) | (6-8 layers) | Â | ||
| Initial pressure (MPa) |
Working pressure (MPa) |
Initial pressure (MPa) |
Working pressure (MPa) |
 | |
| Â | |||||
| 1.0 | 0.14 - 0.16 | 0.12 - 0.14 | 0.22 - 0.26 | 0.20 - 0.24 | Â |
| 1.2 | 0.12 - 0.14 | 0.10 - 0.12 | 0.20 - 0.24 | 0.17 - 0.22 | Â |
| 1.5 | 0.10 - 0.12 | 0.08 - 0.10 | 0.15 - 0.20 | 0.13 - 0.18 | Â |
| 1.8 | 0.08 - 0.10 | 0.07 - 0.09 | 0.13 - 0.16 | 0.11 - 0.14 | Â |
| 2.0 | 0.07 - 0.09 | 0.06 - 0.08 | 0.12 - 0.15 | 0.10 - 0.13 | Â |
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Ni base alloy powder is mainly made of NiCrBSi or NiBSi. Ni-based self-fluxing powder has good wettability, corrosion resistance and high temperature self-lubricating effect, and is used in components with heat resistance, corrosion resistance and thermal fatigue resistance. In general Ni35,Ni45,Ni60 etc can be used for laser cladding, the No means hardness of powder. Inconel 625 and 718 has good corrosion property under higher temperature, also widely used for laser cladding process.
Cobalt based Laser Cladding Powder
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Co-based self-fluxing alloys have good high temperature performance and wear resistance and corrosion resistance, and are used in petrochemical power, metallurgy and other industrial fields where they are wear-resistant, corrosion-resistant and high-temperature resistant.
Iron based Laser Cladding Powder
The work pieces required for laser cladding and manufacturing in the actual industry are mainly carbon steel and cast steel. The Fe-based alloy is close to the base material in composition and has good wettability. The advantage of Fe base powder is lower cost and good wear resistant of cladding layer. As a result, it`s the most widely used for laser cladding process. It is suitable for parts that require local wear resistance and are easily deformed.
WC blended Laser Cladding Powder
Tungsten carbide blended with Ni alloy powder is the best choice for wear resistant work piece. This unique process can bring excellent wear, corrosion and high temperature resistant. Our blend powder can achieve different portion of WC from 35% to 60% without crack under suitable cladding parameter.
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