Method for manufacturing seamed flux-cored welding wire

Details Method for manufacturing seamed flux-cored welding wire Method for manufacturing seamed flux-cored welding wire

2004-08-04

2009-12-01

Elve, M. Alexandra (Department: 3742)

Electric heating

Metal heating

Weld rod structure

C219S145220, C219S13700R

Reexamination Certificate

active

07626139

ABSTRACT:
Disclosed herein is a manufacturing method, excellent in wire drawability, of a seamed flux-cored welding wire having both favorable feedability and low hydrogen content characteristic. The method for manufacturing a seamed flux-cored wire, comprises the steps of: drawing a tube-like formed wire including a flux filled therein using a lubricant; removing the lubricant from the drawn wire by a physical means; and coating a lubricant (coating an oil) for wire feeding on the wire surface. The respective steps are carried out in an in-line manner. In the wire drawing step, a wire drawing lubricant containing a sulfur-bearing high-pressure lubricant is used, and the overall wire drawing from the tube-like formed wire to a roughly product-diameter wire is carried out by means of a roller die.

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