| 摘要 |
PROBLEM TO BE SOLVED: To stably straighten a winding tendency to prevent the wire from generating shakes, and to prevent weld quality from deteriorating. SOLUTION: In this device, when setting wire diameter to (t) mm, the deformation quantity of the wire on the inlet sides by first, second and third rolls toεin (%), the bite quantity of inlet rolls toδin (mm), distance between the axis of the first and the third rolls to 2Lin (mm), the cross-selectional area of the wire to (a) mm<2> (in the case of a flux-cored wire, a coating part) and the micro Vickers hardness of the wire to (hv), the positions of (n) rolls have been set so that the deformation quantity of the wire on the inlet side, which is calculated by a formula,εin = 2t(δin +t)/Lin <2> }×100, becomes withinεin =0.209(a×hv)<0.264>±0.3(%). For theεin , it is preferable that when the flux-cored wire has joints, theεin is adjusted from 0.6 to 1.1 (%), when the flux-cored wire has no joints, theεin is adjusted from 0.7 to 1.2 (%) and in the case of a solid wire, theεin is adjusted from 0.7 to 1.3 (%).
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