JPS6471545A - Production of exhaust valve - Google Patents

Production of exhaust valve

Info

Publication number
JPS6471545A
JPS6471545A JP62228016A JP22801687A JPS6471545A JP S6471545 A JPS6471545 A JP S6471545A JP 62228016 A JP62228016 A JP 62228016A JP 22801687 A JP22801687 A JP 22801687A JP S6471545 A JPS6471545 A JP S6471545A
Authority
JP
Japan
Prior art keywords
neck
bevel
bar stock
exhaust valve
bar
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
JP62228016A
Other languages
Japanese (ja)
Inventor
Junichi Yamamoto
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP62228016A priority Critical patent/JPS6471545A/en
Publication of JPS6471545A publication Critical patent/JPS6471545A/en
Pending legal-status Critical Current

Links

Landscapes

  • Forging (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

PURPOSE:To obtain the exhaust valve having the neck part and bevel part excellent in the oxidation resistance and corrosion resistance by forming the neck and bevel parts with the hot forging of a 1st material after joining it with a 2nd metal bar-like material by coating the surface of the 1st metal bar-like material by Al. CONSTITUTION:A metal bar-like material 2 is evaporated by melting Al inside a vacuum container with its heating, vapor-deposited to the surface of the material 2 and the neck/bevel parts bar stock 4 on which Al coating layer 3 is uniformly formed is obtd. One end part of the bar stock 6 for stem part used in forming the stem part of exhaust valve is joined by friction welding to one end of the bar stock 4. After joining, the neck/bevel bar stock 4 is subjected to upset forging and formed so that the outer diameter dimension becomes larger gradually. The exhaust valve 16 equipped with the stem part 10 having the sliding part 6a formed on the bar stock 6 for stem part and a head part 6b, the neck part 12 and bevel part 14 forming the Al coating layer 3 formed on the neck/bevel parts bar stock 4 can be obtd.
JP62228016A 1987-09-11 1987-09-11 Production of exhaust valve Pending JPS6471545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62228016A JPS6471545A (en) 1987-09-11 1987-09-11 Production of exhaust valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62228016A JPS6471545A (en) 1987-09-11 1987-09-11 Production of exhaust valve

Publications (1)

Publication Number Publication Date
JPS6471545A true JPS6471545A (en) 1989-03-16

Family

ID=16869867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62228016A Pending JPS6471545A (en) 1987-09-11 1987-09-11 Production of exhaust valve

Country Status (1)

Country Link
JP (1) JPS6471545A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010017879A1 (en) * 2008-08-14 2010-02-18 Märkisches Werk GmbH Method for producing a bimetal valve
JP2010120075A (en) * 2008-11-21 2010-06-03 Nippon Light Metal Co Ltd Base shape for suspension component, method for manufacturing the same, and bar-like compound material
JP2013014830A (en) * 2011-07-06 2013-01-24 Toyota Motor Corp Method for manufacturing engine valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010017879A1 (en) * 2008-08-14 2010-02-18 Märkisches Werk GmbH Method for producing a bimetal valve
JP2010120075A (en) * 2008-11-21 2010-06-03 Nippon Light Metal Co Ltd Base shape for suspension component, method for manufacturing the same, and bar-like compound material
JP2013014830A (en) * 2011-07-06 2013-01-24 Toyota Motor Corp Method for manufacturing engine valve

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