Title:
METHOD FOR MANUFACTURING DRUM FOR WASTE HEAT RECOVERY APPARATUS USING FREQUENCY HEAT TREATMENT MACHINE
Document Type and Number:
WIPO Patent Application WO/2010/123170
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a drum for a waste heat recovery apparatus, and more specifically, to a method for manufacturing a waste heat recovery apparatus drum using frequency heat treatment, comprising the use of the following system: a first transfer means which transfers a thick iron plate having a thickness of 80 mm or more; the frequency heat treatment machine for the heat treatment of the iron plate; a bending machine for rolling operation; a second transfer means which transfers the rolled iron plate to a position for welding; and a control box which controls said series of procedures. The iron plate having a thickness of 80 mm or more is slowly entered into the frequency heat treatment machine by the first transfer means to be heated, the heated portion of the iron plate just after passing through the frequency heat treatment machine is immediately entered into the bending machine for rolling, thereby forming the iron plate into a drum shape, the drum shaped, rolled iron plate is transferred into a position whereby it can be tack-welded by the second transfer means immediately after placing both end portions of the rolled iron plate adjacent to each other, and both end portions of the iron plate rolled in the drum shape are finally welded to manufacture the iron plate in the drum form.
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Inventors:
KANG HYUN KI (KR)
KANG BYUNG KI (KR)
HWANG IN SEON (KR)
RYU JUNG HYUNG (KR)
KANG BYUNG KI (KR)
HWANG IN SEON (KR)
RYU JUNG HYUNG (KR)
Application Number:
PCT/KR2009/003567
Publication Date:
October 28, 2010
Filing Date:
June 30, 2009
Export Citation:
Assignee:
KT HEAVY IND CO LTD (KR)
International Classes:
B21D51/24
Foreign References:
| JPH0716739B2 | 1995-03-01 | |||
| JPH0550253A | 1993-03-02 | |||
| JPH09216056A | 1997-08-19 | |||
| JPH0810856A | 1996-01-16 |
Attorney, Agent or Firm:
LEE, MIN YOUNG (KR)
이민영 (KR)
이민영 (KR)
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