Patent ID: 11958136
Assignee: DAICEL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A metal assembled body disposed to come into contact with an accommodating space in which a predetermined pressurized gas is contained, the metal assembled body, comprising:
a first member being a member formed by forging a predetermined metal material, the first member including,
a peripheral wall portion having a tubular shape in which a metal flow of the predetermined metal material is formed along an axial direction, and
an extending portion extending from the peripheral wall portion in a direction different from the axial direction of the peripheral wall portion, the extending portion having an opening that causes an inner space formed on an inner side of the peripheral wall portion and the accommodating space on an outer side to communicate with each other, the peripheral wall portion and the extending portion being formed integrally by the predetermined metal material; and
a closing member welded to a welding surface having an annular shape on the extending portion to close the opening and inhibit movement of the predetermined pressurized gas between the inner space and the accommodating space, wherein
in a state before the closing member is welded, the extending portion is formed to expose an end portion of the metal flow in the predetermined metal material at the welding surface; and
a welding position of the closing member on the welding surface is set to make a width of a first region larger than a width of a region excluding the first region in the welding surface, the first region being a region divided by a welding site with the closing member on the welding surface, where arrival of the predetermined pressurized gas from the accommodating space is inhibited.