H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 61/06 (2006.01) H01J 9/02 (2006.01)
Patent
CA 2518310
The invention relates to a process for producing an electrode for high-pressure discharge lamps, at least the discharge-side section of the electrode being produced from a prefabricated tungsten wire, and the tungsten wire being shortened to the required length during the production process of the electrode and being subjected to an annealing process as well as being mounted on other components of the electrode that may be present. According to the invention, the annealing process is carried out exclusively at temperatures below 1500 degrees Celsius. The invention also relates to an electrode for high-pressure discharge lamps, at least the discharge-side section of the electrode being constructed as a tungsten rod that has a long crystalline structure or an isotropic crystalline structure with grain diameters in the radial direction of the tungsten rod of less than or equal to 50 micrometers with the centroid of the grain size distribution in the range from micrometers to 20 micrometers.
Almanstoetter Juergen
Grundmann Dirk
Guenther Klaus
Hartmann Thomas
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
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