JPS5525579A - Hardening of axial end of engine valve - Google Patents
Hardening of axial end of engine valveInfo
- Publication number
- JPS5525579A JPS5525579A JP9884478A JP9884478A JPS5525579A JP S5525579 A JPS5525579 A JP S5525579A JP 9884478 A JP9884478 A JP 9884478A JP 9884478 A JP9884478 A JP 9884478A JP S5525579 A JPS5525579 A JP S5525579A
- Authority
- JP
- Japan
- Prior art keywords
- axial end
- concavity
- hardening
- engine valve
- defects
- 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
Links
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To eliminate completely defects by the procedure in which a spheroidized solid self-soluble alloy is welded to the spherical concavity of the axial end portion of valve and then the blowholes in the surface layer are removed by a post-treatment.
CONSTITUTION: The spherical concavity 4 is formed in the axial end 1 by machining, and then the spheroidized solid self-soluble alloy 2 of a size smaller than the curvature radius of the spherical concavity 4 is put in the concavity 4 and welded to the bottom 4 of the concavity 4 by heating by means of the high-frequency heating coil 3. By successive machining, defects in the surface layer of the weld can be removed completely.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9884478A JPS5525579A (en) | 1978-08-14 | 1978-08-14 | Hardening of axial end of engine valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9884478A JPS5525579A (en) | 1978-08-14 | 1978-08-14 | Hardening of axial end of engine valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5525579A true JPS5525579A (en) | 1980-02-23 |
Family
ID=14230549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9884478A Pending JPS5525579A (en) | 1978-08-14 | 1978-08-14 | Hardening of axial end of engine valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5525579A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4844106A (en) * | 1971-06-11 | 1973-06-25 |
-
1978
- 1978-08-14 JP JP9884478A patent/JPS5525579A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4844106A (en) * | 1971-06-11 | 1973-06-25 |
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