Method of production of welding wire
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United States of America Patent
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-
Jun 27, 2000
Grant Date -
N/A
app pub date -
Nov 20, 1998
filing date -
Mar 31, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In manufacturing of welding wires, rough surfaces are formed on the product wires to ensure retention of applied lubricants for satisfactory feeding performance. For this purpose, steps of dry hole die drawing with an application of powder lubricants, roller dies drawing, and wet hole die drawing are executed, at least in a part of a sequence of wire drawing processes. As a result of denting of the powder lubricants on the surfaces of the wires during the dry hole die drawing, rough surfaces are formed on the drawn wires.
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