FIELD: machine building.
SUBSTANCE: pressure vessel contains solid-metal envelope implemented from tubular billet from thermally non hardenable aluminium-magnesium alloy, selected from the group: AMg2, AMg2.5, AMg3, AMg3.5, AMg4, AMg4.5, AMg5, AMg6 or its analog, hardening of which is implemented at loading of vessel by test pressure. In other version of implementation of pressure vessel contains external load-bearing envelope from composite material and solid-metal envelope. Manufacturing method of pressure vessel includes manufacturing of solid-metal envelope by method of flanging of at least one end section of tubular billet from thermally non hardenable aluminium-magnesium alloy.
EFFECT: usage of invention will provide simplification and price reduction of vessels' fabrication method.
36 cl, 2 dwg, 1 tbl
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