Title:
MASH SEAM WELDING METHOD AND EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2010/004656
Kind Code:
A1
Abstract:
A pair of upper and lower electrode rings (1, 2) are arranged such that their axes (17, 18) incline in the opposite directions in a horizontal plane against a line (Y) perpendicularly intersecting a welding line (X) formed at the overlapping portion (L) of two metal plates (5, 6), and mash seam welding is performed while driving the electrode rings (1, 2) positively by means of electric motors (61, 62). Consequently, increase in thickness and level difference gradient can be reduced remarkably at the joint, and high joint strength can be assured by reducing stress concentration coefficient. Furthermore, a nugget (N) is jointed not to come off from the joint interface. The axes (17, 18) of the electrode rings (1, 2) incline in such a direction as the advancing direction portions (1A, 2A) of the electrode rings (1, 2) are directed to the direction where a metal plate touching the electrode rings (1, 2) at first exists in the horizontal plane. Consequently, the end portion of the metal plate at the overlapping portion (L) can be prevented from biting into the electrode rings (1, 2) to cause a flaw thereto or generation of dust can be prevented at the time of welding.
Inventors:
KAGA SHINICHI (JP)
TOMINAGA NORIAKI (JP)
SAITO TAKEHIKO (JP)
ONOSE MITSURU (JP)
YOSHIMURA YASUTSUGU (JP)
TAGATA HIROTOSHI (JP)
WATANABE YUJIRO (JP)
ZENITANI SATORU (JP)
WAKAMOTO IKUO (JP)
TOMINAGA NORIAKI (JP)
SAITO TAKEHIKO (JP)
ONOSE MITSURU (JP)
YOSHIMURA YASUTSUGU (JP)
TAGATA HIROTOSHI (JP)
WATANABE YUJIRO (JP)
ZENITANI SATORU (JP)
WAKAMOTO IKUO (JP)
Application Number:
PCT/JP2008/062633
Publication Date:
January 14, 2010
Filing Date:
July 11, 2008
Export Citation:
Assignee:
MITSUBISHI HITACHI METALS (JP)
KAGA SHINICHI (JP)
TOMINAGA NORIAKI (JP)
SAITO TAKEHIKO (JP)
ONOSE MITSURU (JP)
YOSHIMURA YASUTSUGU (JP)
TAGATA HIROTOSHI (JP)
WATANABE YUJIRO (JP)
ZENITANI SATORU (JP)
WAKAMOTO IKUO (JP)
KAGA SHINICHI (JP)
TOMINAGA NORIAKI (JP)
SAITO TAKEHIKO (JP)
ONOSE MITSURU (JP)
YOSHIMURA YASUTSUGU (JP)
TAGATA HIROTOSHI (JP)
WATANABE YUJIRO (JP)
ZENITANI SATORU (JP)
WAKAMOTO IKUO (JP)
International Classes:
B23K11/06; B21D1/02; B23K11/36; B23K31/00; B23K37/08
Foreign References:
| JPH09141449A | 1997-06-03 | |||
| JPH0577054A | 1993-03-30 | |||
| JP2003071567A | 2003-03-11 |
Other References:
See also references of EP 2322308A4
None
None
Attorney, Agent or Firm:
KASUGA, Yuzuru (JP)
Kasuga 讓 (JP)
Kasuga 讓 (JP)
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