Title:
PRESSURE CONTAINER FOR HYDROGEN AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2018009683
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure container for hydrogen capable of effectively suppressing progression of a crack in the pressure container for hydrogen, and excellent in a safety, reliability and durability.SOLUTION: A pressure container for hydrogen is made of low-alloy steel whose tensile intensity is equal to or more than 725 MPa. On an inner surface side of a pressure container body for hydrogen, a plastic region is provided; on an outer surface side, an elastic region is provided; and on the inner surface, compression residual stress occurs. Desirably, equivalent plastic distortion remaining on an internal surface of the pressure container body for hydrogen is equal to or less than 1%. The plastic region on the inner surface side in a radial direction of the pressure container body for hydrogen is equal to or less than 50%.SELECTED DRAWING: Figure 1
Inventors:
ARASHIMA HIRONOBU
WADA HIROHARU
YANAGISAWA YUSUKE
WADA HIROHARU
YANAGISAWA YUSUKE
Application Number:
JP2016140774A
Publication Date:
January 18, 2018
Filing Date:
July 15, 2016
Export Citation:
Assignee:
JAPAN STEEL WORKS LTD
International Classes:
F17C1/00
Domestic Patent References:
| JP2016089891A | 2016-05-23 | |||
| JP2015158243A | 2015-09-03 | |||
| JP2017141919A | 2017-08-17 | |||
| JP2004028120A | 2004-01-29 |
Attorney, Agent or Firm:
Yuki Yokoi
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