Protective gas for tig welding
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
May 29, 2001
Grant Date -
N/A
app pub date -
May 1, 2000
filing date -
Nov 3, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a protective gas for TIG welding of metals, especially high alloy or low alloy steel, whose thermal conductivity is lower than that of aluminium. The inventive gas consists of argon, helium and hydrogen and enables significant improvements to be made in electric arc stability, welding speed, oxidation of weld surface and adjacent area, flow-on performance and weld appearance.
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