JPS5525579A - Hardening of axial end of engine valve - Google Patents

Hardening of axial end of engine valve

Info

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
Application number
JP9884478A
Other languages
Japanese (ja)
Inventor
Katsuyuki Tashiro
Kazuo Yoshino
Kenji Takada
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.)
Fuji Oozx Inc
Original Assignee
Fuji Valve 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 Fuji Valve Co Ltd filed Critical Fuji Valve Co Ltd
Priority to JP9884478A priority Critical patent/JPS5525579A/en
Publication of JPS5525579A publication Critical patent/JPS5525579A/en
Pending legal-status Critical Current

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  • 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
JP9884478A 1978-08-14 1978-08-14 Hardening of axial end of engine valve Pending JPS5525579A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844106A (en) * 1971-06-11 1973-06-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844106A (en) * 1971-06-11 1973-06-25

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