Title:
ディスクバルブをクロスウェッジ圧延する方法
Document Type and Number:
Japanese Patent JP7007390
Kind Code:
B2
Abstract:
The invention relates to a method for producing poppet valves, the method including: cross-wedge rolling a preform (2), which has at least one disk portion (4) and a shaft portion, to produce a valve blank (10), wherein a diameter of the shaft portion (6) is reduced substantially to a shaft diameter of a shaft (16), and additionally a length of the shaft portion (6) is increased substantially to a length of the shaft (16) by means of a rolling-out process.
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Inventors:
Torsten Matthias
Antonius Walking
Guido Bayyard
Antonius Walking
Guido Bayyard
Application Number:
JP2019543990A
Publication Date:
January 24, 2022
Filing Date:
October 26, 2017
Export Citation:
Assignee:
FEDERAL-MOGUL VALVETRAIN GMBH
International Classes:
B21H1/18
Domestic Patent References:
| JP2012197718A | ||||
| JP5057388A | ||||
| JP2001317315A | ||||
| JP2007092535A |
Foreign References:
| CN104924028A | ||||
| CN101856706A | ||||
| WO2011104903A1 | ||||
| WO2016179780A1 |
Attorney, Agent or Firm:
Haruo Awano
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