HEAT TREATING DEVICE FOR SMALL-DIAMETER METALLIC COLUMNAR MATERIAL AND METHOD FOR CONTROLLING DRIVING OF THIS DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain a device for driving a work and to allow this work to travel in such a manner as to obviate the occurrence of the deformation in a test at the time of subjecting a work to hardening with high efficiency and a method for controlling the driving of this device. SOLUTION: This device for subjecting the work 3, such as small-diameter metallic columnar material, to a heat treatment by passing the work through a heat treatment zone by allowing the work to travel in a longitudinal direction is arranged with plural sets of skew roller sets each having two pieces of receiving skew rollers for supporting the work 3 and a pressing skew rollers for pressing the work placed on these receiving skew rollers in a direction where the work 3 is made to travel. A heat treatment means is arranged between the skew roller sets, by which a heat treatment zone is formed. Driving systems are connected to the pressing skew rollers positioned on the inlet side and outlet side of the heat treatment zone to constitute inlet side driving rollers 4 and outlet side driving rollers 5. In addition, the driving operations of the work 3 by the inlet side driving rollers 4 and outlet side driving rollers 5 are separately set and controlled.