Title:
CURVED SURFACE WELD OVERLAY METHOD AND LANCE MANUFACTURING METHOD EMPLOYING SAME
Document Type and Number:
WIPO Patent Application WO/2013/069573
Kind Code:
A1
Abstract:
A curved surface weld overlay method comprises: a first step of tack welding either steel or stainless steel netting material (29-31) in weld regions which are formed in the outer side of a bent portion (16) in the radial direction at the inner part of an inner pipe (14) of a lance, which is formed in whole or in part from a curved surface; and a second step of carrying out an overlay weld with a metal having heat and abrasion resistance upon the netting material (29-31) and forming overlays (19-21) in the weld regions. It is thus possible to smoothly carry out on an inner-side surface of a steel structure having a curved surface (for example, a pipe having a bent portion) an overlay weld with a metal having heat and abrasion resistance.
Inventors:
YAMASHITA MASAHIDE (JP)
HIRATA JUN (JP)
TSUKAMOTO SHINGO (JP)
ENOKIDO HIROFUMI (JP)
IKEGAMI HIROFUMI (JP)
HIRATA JUN (JP)
TSUKAMOTO SHINGO (JP)
ENOKIDO HIROFUMI (JP)
IKEGAMI HIROFUMI (JP)
Application Number:
PCT/JP2012/078496
Publication Date:
May 16, 2013
Filing Date:
November 02, 2012
Export Citation:
Assignee:
FUJICO CO LTD (JP)
SHINAGAWA REFRACTORIES CO (JP)
JFE STEEL CORP (JP)
SHINAGAWA REFRACTORIES CO (JP)
JFE STEEL CORP (JP)
International Classes:
B23K9/04; B23K9/00; B23K35/02; B23K35/30
Foreign References:
| JPH0825078A | 1996-01-30 | |||
| JP2011017529A | 2011-01-27 | |||
| JPS60191683A | 1985-09-30 | |||
| JPH01177080U | 1989-12-18 | |||
| JP2001314965A | 2001-11-13 | |||
| JPH0381351U | 1991-08-20 | |||
| JPS56144868A | 1981-11-11 | |||
| JPH02137671A | 1990-05-25 |
Attorney, Agent or Firm:
NAKAMAE FUJIO (JP)
Fujio Nakamae (JP)
Fujio Nakamae (JP)
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Claims:
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