JPS54115641A - Elongating method for fatigue life of member having notch - Google Patents
Elongating method for fatigue life of member having notchInfo
- Publication number
- JPS54115641A JPS54115641A JP2296578A JP2296578A JPS54115641A JP S54115641 A JPS54115641 A JP S54115641A JP 2296578 A JP2296578 A JP 2296578A JP 2296578 A JP2296578 A JP 2296578A JP S54115641 A JPS54115641 A JP S54115641A
- Authority
- JP
- Japan
- Prior art keywords
- bottom part
- bolt
- fatigue life
- electropolishing
- electrode
- 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.)
- Granted
Links
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
PURPOSE: To elongate the fatigue life of a member by winding an electrode element for local electropolishing, round the notched bottom part of the member, obtd. by enclosing a wire electrode with a water absorbing and insulating substance and covering glass fibers, and then carrying out electropolishing to selectively remove the surface layer of the notched bottom part.
CONSTITUTION: A flixeble wire electrode with corrosion resistance, e.g. a copper wire is enclosed with water absorbing and insulating asbestos, etc. and covered with water permeable and insulating glass fibers, etc. to form an electrode element for local electropolishing. Element 4 is closely wound round the notched bottom part such as the screwed bottom part of bolt 5 and connected to the cathode of DC power source 6 through lead 7. bolt 5 is connected to the anode of source 6. Electrolytic soln. 9 is injected into element 4, and a current is supplied to electropolish the screwed bottom part alone of bolt 5 in contact with element 4, thereby removing the fatigued and damage surface layer of the bottom part. Thus the fatigue life of the member can be elongated sufficiently.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2296578A JPS594520B2 (en) | 1978-03-01 | 1978-03-01 | Method for extending fatigue life of parts with notches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2296578A JPS594520B2 (en) | 1978-03-01 | 1978-03-01 | Method for extending fatigue life of parts with notches |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54115641A true JPS54115641A (en) | 1979-09-08 |
JPS594520B2 JPS594520B2 (en) | 1984-01-30 |
Family
ID=12097285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2296578A Expired JPS594520B2 (en) | 1978-03-01 | 1978-03-01 | Method for extending fatigue life of parts with notches |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS594520B2 (en) |
-
1978
- 1978-03-01 JP JP2296578A patent/JPS594520B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS594520B2 (en) | 1984-01-30 |
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