| 摘要 |
PURPOSE:To prevent the breakdown of a bend part and to perform a safe and sure winding by performing the winding by preventing the bend of the small diameter axial part on the outer periphery of a winding drum by giving a bend plastic deformation to the large diameter axial part in advance in case of winding a tapered oil temperature wire. CONSTITUTION:The tapered oil tempering wire 1 that a small diameter axial part 3 and large diameter axial part 2 are formed linearly alternately via a taper axial part 4 is wound on a winding drum 11 after giving it a plastic deformation by using a straightening roller 14, which gives a bend plastic deformation by using fixed rollers 15a, 15b and a reforming roller 16 to the large diameter axial part 2 of the oil temper wire 1 water-cooled by coming out of a tempering furnace 17. The radius of curvature (r) of the large diameter axial part 2 is taken 1-8 times the radius R of the drum 11. The bend of the small diameter axial part 3 on the outer periphery of the drum 11 is thus prevented. In this way the breakdown of the bend part of the tapered oil temper wire is prevented to perform a safe winding.
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