| 摘要 |
The invention provides a light-alloy wheel for vehicles. In the light-alloy wheel for vehicles, a forged member is used at least for a disk portion, and outer and inner rim portions or an inner rim portion are separately worked, and these members are then joined to the disk portion by a friction pressure joining process. A forged light-alloy member in which an outer rim portion and a disk portion are integrally molded can be joined to an inner rim portion which is formed by casting a light alloy, by a friction pressure joining process, and a forged light-alloy member in which an outer rim portion and an inner portion are integrally molded can be joined to a disk portion which is formed by forging a light alloy, by a friction pressure joining process. Outer and inner rim portions are integrally molded by a casting process, and a portion which is to be formed as the inner rim portion can be molded by a spinning process.
|
