Title:
METHOD FOR PRODUCING Al-PLATED STEEL PIPE COMPONENT, AND Al-PLATED STEEL PIPE COMPONENT
Document Type and Number:
Japanese Patent JP2019073779
Kind Code:
A
Abstract:
To provide a method for producing an Al-plated steel pipe component capable of realizing an Al-plated steel pipe component having more excellent flange part corrosion resistance.SOLUTION: Provided is a method for producing an Al-plated steel pipe component comprising: a heating step where an Al-plated steel pipe having an Al-plated layer containing Al and Si is arranged between at least a pair of dies with a prescribed shape, and is heated by conduction heating to a heating temperature within the range from Ac3 transformation point or above to below 1,102°C: a bulging step where air under prescribed pressure is fed to the hollow part of the Al-plated steel pipe whose temperature has been reached to the heating temperature to subject the Al-plated steel pipe to hot blow molding, and a bulged part is formed from the surface of the Al-plated steel pipe; and a molding step where the dies are closed under prescribed pressure, and thereafter air under prescribed pressure is fed to the hollow part of the Al-plated steel pipe to mold a hollow part with a prescribed cross-sectional shape and a flange part projecting from the outer surface of the hollow part.SELECTED DRAWING: Figure 1
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Inventors:
NAKAMURA TOYOMITSU
MAKI JUN
MAKI JUN
Application Number:
JP2017201704A
Publication Date:
May 16, 2019
Filing Date:
October 18, 2017
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C21D9/00; B21D26/041; B21D26/053; C21D1/18; C22C21/02; C22C21/10; C22C38/00; C22C38/38; C22C38/58; C23C2/12; C23C2/38
Domestic Patent References:
| JP2011020137A | 2011-02-03 | |||
| JP2016036816A | 2016-03-22 | |||
| JP2008069398A | 2008-03-27 | |||
| JP2010265515A | 2010-11-25 | |||
| JP2019073778A | 2019-05-16 |
Foreign References:
| WO2010005121A1 | 2010-01-14 |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Tetsuo Kanamoto
Koji Hagiwara