| 摘要 |
PURPOSE: An integrated cylinder manufacturing method is provided to form the central two of four metal sheets through blow forming in a vacuum condition, thereby improving reliability through a simple process. CONSTITUTION: An integrated cylinder manufacturing method comprises the steps of: preparing four annular metal sheets, welding or diffusion-bonding the two central metal sheets(102,103) located between the outermost and innermost metal sheets(104,101), overlaying and arranging the four metal sheets concentrically, welding or diffusion-bonding the parts of the outermost and innermost metal sheets forming the outer and inner peripheries of a cylinder to the two central metal sheets, mounting the overlaid four metal sheets on a jig, forming a vacuum in the jig, raising the internal temperature of the jig, and injecting gas between the central metal sheets between the outermost and innermost metal sheets.
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