FIELD: process engineering.
SUBSTANCE: invention relates to contact tube for welding torch. Through channel 30 is arranged along tube lengthwise axis 31 for welding wire 13 to pass from inlet zone 37 and outlet channel 39 toward workpiece. At least, one spline 34 is arranged in outlet zone 35 for contact of welding electrode wire 13. For better contact of welding wire 13 in contact tube zone 37, one more spline 36 is arranged in said zone. Note here that said spline 36 in inlet zone 37 and spline 34 in outlet zone 35 are aligned while web 38 is arranged between said splines to make a center of turn.
EFFECT: higher efficiency.
12 cl, 4 dwg
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