Liner end enclosure molding process of high-pressure hydrogen storage cylinder

Abstract

The invention provides a high-pressure hydrogen storage cylinder, which comprises a liner body, a liner end enclosure and a transition section of the joint of the liner body and the liner end enclosure. A molding process of the liner end enclosure comprises threes steps of clamping processing, billet heating, and neck-spinning. The invention has the beneficial effects that: clamping jaws are designed to clamp during fixing so as to solve the problem that aluminum alloy easily deforms when being tightly clamped, so that the surface of a product has no clamping marks; and the reasonable heating speed and pass number are selected to solve the problem that the aluminum alloy end enclosure is difficult to mold. The process provided by the invention effectively solves the problem of the molding of the transition section of the hydrogen cylinder, and eliminates the manufacturing processes of the gas cylinder.

Description

technical field

[0001] The invention relates to a molding process of an aluminum liner head of a high-pressure hydrogen storage cylinder, which belongs to the field of mechanical manufacturing. Background technique

[0002] High-pressure gas cylinders are one of the essential key components for compressed hydrogen storage. At present, metal containers and composite material containers are mainly used for filling compressed hydrogen. Metal containers are generally heavy, and the hydrogen storage density per unit mass of a steel pressure vessel with a pressure of 15 MPa is generally only about 1 wt%, which limits its application in fuel cell vehicles. With the rapid development of fuel cell electric vehicles, high requirements have been placed on the mass and volume hydrogen storage density of the on-board hydrogen storage system (the target requirement of the U.S. Department of Energy is 6wt%H 2 / m 3 and 60kgH 2 / m 3 ). Composite material high-pressure vessels have many...

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