| 摘要 |
Method and apparatus for making hollow links or rings and for making chain made from hollow links by receiving seamless wire which has an inner core and an exterior surface, for example, a gold alloy surface, making a perforation in the wire so as to expose the inner core at the perforation, and forming the wire into an open or closed link such that the perforation is located on a hidden portion of the link. The inner core may then be removed from the open or closed link by dissolving it in acid, wherein the acid contacts the inner core at the perforation thus allowing the acid to dissolve the inner core. A chain may be made by coupling each link with at least one preceding link to produce the chain.
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