making an aluminium scuba tank
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Uploader Comments (scubaengineering)
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Something I became aware of when looking at aluminium alloys and bike frames is that whilst aluminium is more ductile than steel, it develops micro fissures in it during the distortion.
Still, the aerospace industry seem to love it. So I doubt that alone is the reason for the rupture problem mentioned.
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I am very interested in the problem that affected your aluminium cylinders - what happened? Was it a manufacturing defect? How old were they?
All cylinder manufacturers are keen to weed out the occasional rogue cylinder - So let’s have some info, and if you have a genuine rogue cylinder, I can help you with the refund process.
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To remain independent, we neither sell nor promote steel, aluminium or fiber cylinders - or any one manufacturer. Our job is to instruct new technicians how to impartially inspect and repair diver’s life support equipment including high pressure cylinders.
All modern scuba cylinders be they NCM Steel or T6061 Aluminium types have a long design life if used according to the manufactures instructions.
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@frithwks Both steel & aluminium scuba cylinders are safe if filled with clean dry air to EN12021, handled accorded to the manufacturer’s instructions and inspected periodically.
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If you mean rupture, its due to people overfilling them (For an Aluminum 80 3000psi is the maximum fill). So people put more in for more bottom time. Another common reason is when they get old they start to pit and get small cracks that can eventually make the rupture. You are required to have them visually inspected every year and hydro statically tested every 5 years.
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okay then why did some of them rapture
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Nice.......Great video!
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beauty
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did she say "a standard US 80-foot scuba tank requires 14kg of aluminium"? 80 cubic feet is like 600 gallons...
braslfakr 10 months ago
@braslfakr (Top Secret)...
The 80 cubic foot of air (at 1 atm pressure) is compressed by 3,000psi of pressure into a conveniently portable volume, and voila, you have a scuba tank.
scubaengineering 10 months ago