| 摘要 |
PROBLEM TO BE SOLVED: To provide a curved tube part and manufacturing method of the curved tube parts, when a superelastic pipe member is used as a curved tube part, capable of preventing damage of a wire guide part by subjecting the pipe member to proper shape-memory treatment.SOLUTION: A curved tube part 10 is formed by molding a wire guide part 30 on a pipe member 20 formed of a NiTi alloy, by shape-memory treatment. The wire guide part 30 is molded on a neutral plane 20c in the width direction of the pipe member 20 such that a perimeter in the cross section of the neutral plate 20c after the shape-memory treatment is not changed substantially with respect to the perimeter in the cross section of the neutral plane before the shape-memory treatment. |
