METHOD FOR PRODUCING A SEAMLESS PRESSURE VESSEL FOR STORING HYDROGEN

摘要

The invention relates to a method for producing a seamless pressure vessel for storing hydrogen and also to such a pressure vessel produced by the method. In order that such a pressure vessel withstands both very high internal pressures and pressure fluctuations as well as (low) temperatures and temperature fluctuations and also high mechanical loading from the outside, is resistant to embrittlement and is comparatively lightweight and can be produced cost-effectively, the invention proposes forming a round or tubular workpiece consisting of a multi-layer composite sheet metal material comprising a carrier layer made of steel material, preferably carbon steel, 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, wherein the workpiece is formed in such a manner that the shielding layer represents an inner layer of the pressure vessel, and in which the multi-layer composite sheet metal material or the workpiece is selected or produced with respect to the thickness of the shielding layer in such a way that, during the flow forming of the workpiece, the shielding layer is retained as a whole-area, uninterrupted layer.

主权项

1. A method for producing a seamless pressure vessel for storing hydrogen, comprising:
producing a multilayered composite sheet metal workpiece having at least a steel carrier layer, and a shielding layer that is resistant to hydrogen embrittlement; flow forming the multi-layer composite sheet metal workpiece into a seamless hollow body having an inner surface and an outer surface, the shielding layer being the inner surface layer thereof, said hollow body configured to be used as at least a part of a pressure vessel;