Being transfer method at the time of heat treatment of the transfer jig null wire rod coil which is used for the transfer method

摘要

PROBLEM TO BE SOLVED: To greatly shorten the time required for heat treatment, to improve the working efficiency and to reduce the equipment cost.;SOLUTION: A transfer jig for a wire coil 2 is provided with an inner circumference receiving member 3 which is inserted in an inner circumferential hole in the wire coil whose axis is temporarily placed in the horizontal direction with both end parts projected from the coil 2 to receive an inner circumferential part of the coil, and an outer circumference receiving member 4 which is placed on a roller table toward an annealing furnace to receive an outer circumferential part of the coil 2 together with both end parts of the inner circumference receiving member 3, the shape of a receiving part 6 of the inner circumference part of the coil of the inner circumference receiving member 3 is arc-shaped section, the radius (r) of the receiving part 6 is not less than rc-0.2Rc to rc-0.15Rc, but below rc, where Rc is the radius of the outer circumference of the coil 2 and rc is the radius of the inner circumference of the coil 2, and the height H from the lowest position of the outer circumferential part of the wire coil 2 to the arc end of the receiving part 6 is not less than Rc-rc to not more than Rc.;COPYRIGHT: (C)2000,JPO