Contact tip for arc welding apparatus
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United States of America Patent
Stats
-
Jan 29, 1991
Grant Date -
N/A
app pub date -
Mar 5, 1990
filing date -
Mar 7, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A contact nozzle for a wire-shaped welding electrode for arc welding is designed as a contact tube in the front section and as a guide channel for the electrode in the rear section. The guide channel is formed by an open groove made in the nozzle body. The feed by the electrode is hindered in the rectilinear feed direction by a convex projection of the groove wall. Particles, dragged into the nozzle with the electrode, fall out of the open groove and therefore cannot displace the contact tube.
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