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Cost Reductions in Welded Tungsten Lamp Lead Seals

Published on February 3, 2011 By admin

Seal Grade Tungsten for Lamp Leads The making of welded tungsten lamp leads requires the use of seal grade tungsten cuts to insure a gas tight seal of the lamp envelope. Grinding to Remove Surface Defects The typical seal grade tungsten used in the past was made from rod that was centerless ground with diameter [...]