Title:
WIRE-DRAWING METHOD AND SUPERCONDUCTING WIRE ROD
Document Type and Number:
Japanese Patent JP2023006905
Kind Code:
A
Abstract:
To ensure processing stability resulting from suppression of a nonuniform deformation shape in a wire-drawing method.SOLUTION: Provided is a wire-drawing method for decreasing, by wire-drawing, a cross-section diameter of a first wire rod having a center material, a plurality of first peripheral lines arranged so as to surround the center material, and a shell material arranged outside the first peripheral lines. A shape on a cross section perpendicular to a longitudinal direction of the first peripheral lines is an approximately isosceles trapezoid composed of a long side in contact with the shell material, a short side in contact with the center material, and a first oblique side and a second oblique side in contact with the peripheral lines adjacent to each other.SELECTED DRAWING: Figure 1
Inventors:
HSIEH ZHENGFING
HONG YOUNJEONG
HONG YOUNJEONG
Application Number:
JP2021109756A
Publication Date:
January 18, 2023
Filing Date:
June 30, 2021
Export Citation:
Assignee:
HITACHI LTD
International Classes:
B21C1/00; H01B12/10; H01B13/00
Attorney, Agent or Firm:
Seiryo Patent Attorneys Corporation