Title:
METHOD AND DEVICE FOR MANUFACTURING METAL TUBE WITH GROOVE
Document Type and Number:
Japanese Patent JP2017185498
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a metal tube with a groove by an electro-resistance-welded tube manufacturing device.SOLUTION: When concaved grooves extending in a tube longer direction are formed at plural portions which are spaced from one another in a circumferential direction of an external surface of a metal tube by an electro-resistance-welded tube manufacturing device, concaved grooves 8a extending in a tube longer direction are formed at plural portions which are spaced from one another in a circumferential direction of an external surface of a metal tube 8 which passed through a sizing roll by spheres 55 of plural spherical convexes 56 and plural recesses 20a of an inner ring 20 in an inner ring grooving device 10A. After formation of the metal tube, the concaved groove 8a is formed on the metal tube 8 by the sphere 55 of the spherical convex 56 and the recess 20a of the inner ring 20, and therefore a metal tube having an irregular cross-sectional shape can be easily obtained.SELECTED DRAWING: Figure 3
Inventors:
SATO TADAYUKI
NISHIMURA KOHEI
MIYATA TOSHIYUKI
NISHIMURA KOHEI
MIYATA TOSHIYUKI
Application Number:
JP2016073758A
Publication Date:
October 12, 2017
Filing Date:
April 01, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMIKIN METAL PRODUCTS CO LTD
International Classes:
B21C37/08; B21C37/15; B21D5/12; B21D17/04; B23K13/00; B23K13/02
Attorney, Agent or Firm:
Yasuhiko Kagawa
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