Metal working – Method of mechanical manufacture – Impeller making
Patent
1997-12-12
2000-03-07
Cuda, Irene
Metal working
Method of mechanical manufacture
Impeller making
2989001, B23P 1500
Patent
active
060323612
ABSTRACT:
Provided are a gas turbine multi-hole film-cooled combustor liner, which can be manufactured with improved accuracy in shape and position of cooling holes in a very short time, ensuring desirable buckling strength and satisfactory cooling performance. A planar flat member is curved to form a liner shell of a cylindrical shape, the cylindrical member is welded in the longitudinal direction thereof to form a cylindrical shell. Then a wavy configuration and a corrugated configuration are formed on the cylindrical shell by a hydro-bulging method, cooling holes are formed through the liner shell by laser drilling at or near wave crest portions of the wavy configuration of the liner shell, and inner rings are attached to the liner shell by resistance spot welding or vacuum brazing.
REFERENCES:
patent: 4878283 (1989-11-01), McLean
patent: 5223692 (1993-06-01), Lozier et al.
European Search Report dated Nov. 19,1998 by Examiner A. Argentini at The Hague.
Aburatani Yoshihiro
Kaminaka Yamato
Kubo Hiroshi
Makino Yoshinobu
Matsui Hiroshi
Cuda Irene
Kabushiki Kaisha Toshiba
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