Drum cathode for use in the production of metal foils and a method of producing the same
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United States of America Patent
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Aug 31, 1993
Issued Date -
N/A
app pub date -
Apr 1, 1992
filing date -
Apr 1, 1992
priority date (Note) -
Expired
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Abstract
The present invention provides a new and improved titanium metal drum cathode for use in the production of metal foils and a novel method of making the same. The method includes the steps of welding together the ends of a strip of titanium that has been roll formed into a cylinder. During the welding operation some of the weld beads that form the weld are hot peened immediately upon solidification. Upon complete formation of the weld, the formed and welded trip of titanium is subjected to a heat treating cycle that includes a double anneal. Preferably, the strip of titanium metal and the weld metal that is used to form the weld both comprise an addition agent such as yttria.
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