| 摘要 |
<p>This invention concerns a method of joining forged, machined, formed or cast components with metal tube. In another aspect it concerns a metal object constructed according to the method. The tube heated to expand its diameter, but not sufficiently to anneal it, or otherwise adversely affect its mechanical properties. Then, while the tube is still hot, it is pushed over part of the central component so that part of the tube overlies a circumferential groove in the central component. Then, while still hot, the circumferential part of the tube which overlies the groove, is rolled into the groove, so that when cooled the rolled part of the tube is clamped into the groove. The invention is particularly, but not exclusively, applicable to the construction of vehicle wheels having a forged, machined, formed or cast hub or centre and a metal rim.</p> |
