METHOD OF PRODUCING PRECIOUS METAL ALLOY OBJECTS
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United States of America Patent
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Issued Date -
Feb 10, 2011
app pub date -
Mar 26, 2009
filing date -
Apr 9, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention provides a method for manufacturing a biocompatible precious metal alloy object. According to a first aspect melting of alloying elements and casting of the biocompatible precious metal alloy are carried out in a process chamber (11) being provided with a process gas of predetermined composition. A burning flame (19) of a hydrocarbon-containing gas provides low oxygen and water content. According to a second aspect post-processing of a precious metal alloy is made in atmosphere provided by the process gas to form the biocompatible precious metal alloy object. The biocompatible precious metal alloy object manufactured according to the invention has a low probability of causing sensitisation when in contact with the human body.
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