JPS56166379A - Method for preventing corrosion cracking - Google Patents

Method for preventing corrosion cracking

Info

Publication number
JPS56166379A
JPS56166379A JP6962180A JP6962180A JPS56166379A JP S56166379 A JPS56166379 A JP S56166379A JP 6962180 A JP6962180 A JP 6962180A JP 6962180 A JP6962180 A JP 6962180A JP S56166379 A JPS56166379 A JP S56166379A
Authority
JP
Japan
Prior art keywords
cover plates
gaseous
inert gas
corrosion cracking
spaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6962180A
Other languages
Japanese (ja)
Inventor
Yoshiyasu Ishibashi
Hiroshi Honma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6962180A priority Critical patent/JPS56166379A/en
Publication of JPS56166379A publication Critical patent/JPS56166379A/en
Pending legal-status Critical Current

Links

Landscapes

  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PURPOSE: To prevent corrosion cracking owing to the water flow in runners having cover plates by forming the spaces between the runner base bodies and the cover plates into tightly closed structure, and sealing an inert gas therein.
CONSTITUTION: The spaces constituted by cover plates 1 and runner base bodies 2 are filled with an inert gas substance such as gaseous N2 or gaseous CO2 and the sealing pressure is kept at around 1kg/cm2, whereby the breakdown phenomena by corrosion or erosion owing to flowing water are prevented. According to this method, there is an advantage of permitting early nondestructive discovery of cracking, if any, by measuring pressure drop.
COPYRIGHT: (C)1981,JPO&Japio
JP6962180A 1980-05-27 1980-05-27 Method for preventing corrosion cracking Pending JPS56166379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6962180A JPS56166379A (en) 1980-05-27 1980-05-27 Method for preventing corrosion cracking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6962180A JPS56166379A (en) 1980-05-27 1980-05-27 Method for preventing corrosion cracking

Publications (1)

Publication Number Publication Date
JPS56166379A true JPS56166379A (en) 1981-12-21

Family

ID=13408120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6962180A Pending JPS56166379A (en) 1980-05-27 1980-05-27 Method for preventing corrosion cracking

Country Status (1)

Country Link
JP (1) JPS56166379A (en)

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