Title:
原子炉燃料アセンブリのガイドチューブの製造方法およびガイドチューブ成形用マンドレルならびに得られたガイドチューブ
Document Type and Number:
Japanese Patent JP4933511
Kind Code:
B2
Abstract:
Successive axially spaced sections of a tubular blank (22) are pressed against different axially spaced sections (18,19) and (20,21) of a mandrel (14), which is shifted axially between pressing steps, to produce a tube of uniform external diameter but whose wall thickness varies axially. Also claimed is mandrel (14) which is rotationally symmetrical and whose external diameter varies axially from section (16) to section (21). Also claimed is a guide tube for a nuclear fuel assembly and presenting axially spaced sections with different wall thicknesses but uniform external diameter connected by a section of progressively varying wall thickness longer than 100 mm.
Inventors:
Jean Dorillon
Jean-Luc Aubin
Jean-Luc Aubin
Application Number:
JP2008262231A
Publication Date:
May 16, 2012
Filing Date:
October 08, 2008
Export Citation:
Assignee:
Company Europe Anne du Zirconium-Seju
International Classes:
B21B21/00; G21C3/326; B21B25/00; G21C7/20; G21C21/00; B21B15/00
Domestic Patent References:
| JP7306281A | ||||
| JP101119C2 | ||||
| JP48027953A | ||||
| JP30001561B1 | ||||
| JP4148893A | ||||
| JP56059522A | ||||
| JP54034703B1 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro