Title:
HOLLOW MOLDED ARTICLE AND METHOD FOR MANUFACTURING HOLLOW MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2018/051733
Kind Code:
A1
Abstract:
Provided is a hollow molded article that comes into contact with high-pressure hydrogen and has a bonded section at which two or more split bodies are bonded by welding, wherein the hollow molded article is characterized in that the average spherulites size in a portion extending 500 μm inward from the surface of the hollow molded article is 20 μm or less, and the tensile strength of a test piece including the bonded section of the hollow molded article is 80% or higher in relation to the tensile strength of a test piece that does not include the bonded section of the hollow molded article. The present invention provides a hollow molded article that is brought into contact with high-pressure hydrogen and that has a bonded section, in which the occurrence of cracking at the bonded section can be inhibited even when the filling of the hollow molded article with high-pressure hydrogen and the releasing of the pressure of the high-pressure hydrogen are repeated.
Inventors:
OCHIAI SHINICHIRO (JP)
SUZUKI SHOTA (JP)
KOBAYASHI SADAYUKI (JP)
SUZUKI SHOTA (JP)
KOBAYASHI SADAYUKI (JP)
Application Number:
PCT/JP2017/029789
Publication Date:
March 22, 2018
Filing Date:
August 21, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
F17C1/16; B29C45/00; B29C45/26
Foreign References:
| JP2005254757A | 2005-09-22 | |||
| JP2005279963A | 2005-10-13 | |||
| JP2003119375A | 2003-04-23 |
Other References:
See also references of EP 3514438A4
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