JPS641602A - Method for improving fatigue strength of automobile wheel - Google Patents

Method for improving fatigue strength of automobile wheel

Info

Publication number
JPS641602A
JPS641602A JP15494687A JP15494687A JPS641602A JP S641602 A JPS641602 A JP S641602A JP 15494687 A JP15494687 A JP 15494687A JP 15494687 A JP15494687 A JP 15494687A JP S641602 A JPS641602 A JP S641602A
Authority
JP
Japan
Prior art keywords
fatigue strength
disk
air holes
wheel
automobile wheel
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
JP15494687A
Other languages
Japanese (ja)
Other versions
JPH011602A (en
Inventor
Koichiro Ishihara
Juichi Kawashima
Hideo Komatsu
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP62-154946A priority Critical patent/JPH011602A/en
Priority claimed from JP62-154946A external-priority patent/JPH011602A/en
Publication of JPS641602A publication Critical patent/JPS641602A/en
Publication of JPH011602A publication Critical patent/JPH011602A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To attain improvement of fatigue strength, of an automobile wheel having air holes on the disk thereof, by concentrically cold rolling the wheel under a given pressure over a given range radially inside and outside the air hole edges.
CONSTITUTION: A range radially inside and outside the edges of the air holes 11-1 of a disk 11 is concentrically cold rolled over 1W5 times the material thickness of the disk 11 to the depth of 5W15% of the material thickness under a heltz pressure of 500W700kgf/mm2 by use of a roller or the like. This constitution will ensure the improvement of both fatigue strength around the air holes and the durability of the title wheel.
COPYRIGHT: (C)1989,JPO&Japio
JP62-154946A 1987-06-22 Method for improving fatigue strength of automobile wheels Pending JPH011602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154946A JPH011602A (en) 1987-06-22 Method for improving fatigue strength of automobile wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154946A JPH011602A (en) 1987-06-22 Method for improving fatigue strength of automobile wheels

Publications (2)

Publication Number Publication Date
JPS641602A true JPS641602A (en) 1989-01-06
JPH011602A JPH011602A (en) 1989-01-06

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ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06193012A (en) * 1992-12-25 1994-07-12 Nippon Hodo Co Ltd Pressing method of paving material end part and device thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06193012A (en) * 1992-12-25 1994-07-12 Nippon Hodo Co Ltd Pressing method of paving material end part and device thereof

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