MANUFACTURING OF CYLINDRICAL BODY FORMING PRESSURE CONTAINER, MANUFACTURE OF PRESSURE CONTAINER FORMED OF THE CYLINDRICAL BODY, CYLINDRICAL BODY, AND PRESSURE CONTAINER FORMED OF THE CYLINDRICAL BODY

摘要

PROBLEM TO BE SOLVED: To lighten a pressure container, reduce manufacturing cost, and dispense with a name plate by carrying out spinning work so as to form the wall thickness of at least one barrel part of two cylindrical bodies thinner than that of a bottom part. ;SOLUTION: A disk plate in which information is marked is pressed by means of pressing, and an upper side cylindrical body 3a and a lower side cylindrical body 3b. Spinning work is carried out on each barrel part 9 of the cylindrical bodies 3a, 3b. Namely, the upper side cylindrical body 3a is set to a main shaft part 5a of a spinning work machine, the upper side cylindrical body 3a is rotated around an axial core of a main shaft part 51 together with the main shaft part 51 by for example 1000rpm, and for example, the wall thickness of the barrel part 9 in an end plate part of 2.8mm is worked to 2.4mm. The fitting part of the lower side cylindrical part 3b is fitted to an opening part side end part 31 of the upper side cylindrical body 3a, and the lower side cylindrical body 3b is welded to the upper side cylindrical body 3a around an opening top part.;COPYRIGHT: (C)1998,JPO