[Jewelry making - Article 00569] - Re: [Orchid] Laser welding Niobium

[Bill Seeley]

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    Here is what came back from the engineers: 

          We have no experience laser welding. We have had some
          customers try with limited success. It is a "hot" process. Must
          be tough to "cover". As you know, we TIG weld. That said - the
          blue and black are both most likely oxcides. Argon (or better
          yet; an Ar and He mix) flow should be low enough to allow
          filling of the cover area.... Bottom coverage is, of course,
          just as important. Feeding the shield - Ar from the top; if He
          from the bottom. Maintain gas flow well after the work is
          complete. 

Bill Seeley
Reactive Metals Studio, Inc
bill AT reactivemetals.com
V-928/634-3434
F-928/634-6734
www.reactivemetals.com

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