Title:
HOLLOW ENGINE VALVE WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/077405
Kind Code:
A1
Abstract:
Provided is a hollow engine valve welding method which can improve the quality of a welding part. The hollow engine valve welding method can obtain a hollow engine valve by means of a valve umbrella member (11) having a hollow shaft shape with an umbrella shape at an end thereof and a shaft-end sealing member (12) having a shaft shape being welded to each other, wherein electronic beams (E) are irradiated, from two positions which are point-symmetric with respect to the axis of the valve umbrella member (11) and the shaft-end sealing member (12), onto a welding part formed by bringing an end surface (21) of a hollow shaft part (11b) of the valve umbrella member (11) into contact with an end surface (31) of the shaft-end sealing member (12), and along with this the valve umbrella member (11) and the shaft-end sealing member (12) which have been brought into contact with each other are rotated about said axis. As a result, the valve umbrella member (11) and the shaft-end sealing member (12) are welded together.
Inventors:
FUJIYA YASUYUKI (JP)
MORII HIROKAZU (JP)
HIRAO KENICHIRO (JP)
TSUBOTA SHUHO (JP)
MORII HIROKAZU (JP)
HIRAO KENICHIRO (JP)
TSUBOTA SHUHO (JP)
Application Number:
PCT/JP2011/073478
Publication Date:
June 14, 2012
Filing Date:
October 13, 2011
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
FUJIYA YASUYUKI (JP)
MORII HIROKAZU (JP)
HIRAO KENICHIRO (JP)
TSUBOTA SHUHO (JP)
FUJIYA YASUYUKI (JP)
MORII HIROKAZU (JP)
HIRAO KENICHIRO (JP)
TSUBOTA SHUHO (JP)
International Classes:
F01L3/24; B23K15/00; B23K20/12; B23K26/073; B23K26/21; B23K33/00; F01L3/20
Foreign References:
| JPS61216875A | 1986-09-26 | |||
| JPS61135491A | 1986-06-23 | |||
| JPH03258903A | 1991-11-19 | |||
| JPH03258469A | 1991-11-18 | |||
| JPH11109079A | 1999-04-23 |
Attorney, Agent or Firm:
MITSUISHI Toshiro et al. (JP)
Toshiro Mitsuishi (JP)
Toshiro Mitsuishi (JP)
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Claims: