Loading jig for wire coil and heat treatment method for wire coil using this

摘要

PROBLEM TO BE SOLVED: To provide a loading jig for a wire material coil capable of improving a gas flow at the time of heat treatment in a wire material coil stacked in multiple stages and reducing a temperature difference between the inside and outside of the wire material coil. SOLUTION: A loading jig 1 for a wire coil is a first mounting plate 2 on which a lower wire coil W1 is mounted, and an upper wire coil W2 located above the first mounting plate 2. A second mounting plate 3 to be mounted, a first support column 4 that is interposed between the mounting plates 3 and supports the second mounting plate 3, and a first that closes the upper end of the lower wire coil W1. The lid 8 and the second lid 9 that closes the upper end of the upper wire coil W2 and the first mounting plate 2 are penetrated in the plate thickness direction and upward from below the first mounting plate 2. A first gas flow path 11 that guides the gas flow of the lower wire coil W1 to the inner diameter hole W1a of the lower wire coil W1 and a flow path 26 formed inside the first support column 4 along the axial direction. It includes a second gas flow path 13 that guides the flow to the inner diameter hole W2a of the upper wire rod coil W2. [Selection diagram] Fig. 2