Method for producing a seamless pressure vessel for storing hydrogen
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United States of America Patent
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Feb 13, 2018
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app pub date -
Feb 17, 2015
filing date -
Feb 17, 2014
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Abstract
A method may be used to produce a seamless pressure vessel for storing hydrogen. So that such a pressure vessel withstands both very high internal pressures and pressure fluctuations and (low) temperatures and temperature fluctuations and also high mechanical loading, is resistant to embrittlement, and is comparatively lightweight, a round or tubular workpiece may be formed that includes a multi-layer composite sheet metal material comprising a carrier layer made of steel material and a shielding layer resistant to hydrogen embrittlement by a flow forming process into a seamless hollow body, which serves as a semifinished product to be further processed into the seamless pressure vessel. The shielding layer may represent an inner layer of the pressure vessel. During the flow forming of the workpiece, the shielding layer may be retained as a whole-area, uninterrupted layer.
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