HEATING DEVICE OF METAL TUBE BODY

摘要

PROBLEM TO BE SOLVED: To form each receiving roller with an inexpensive metal material easy to purchase and to compose a heating device with a structure capable of preventing spark between workpiece receiving rollers for providing long-term durability, in a heating device of a metal tube body for induction-heating the total length of a workpiece while rotatably supporting it with two receiving rollers.

SOLUTION: This metal tube body heating device 40 is equipped with: the receiving rollers 50 and 60 for mounting the metal tube body 10 in a manner capable of horizontally and rotatably transmitting it; roller driving devices 25-26 for rotatably driving them by pivoting them; and induction heating devices 21-22 for induction-heating the total length of the metal tube body 10. The rollers 50 and 60 are composed of: metallic core members 51 and 61; a plurality of metallic short sleeves 52 and 62 each having an axially split form; and spacers 53 and 63 serving as mutual insulation thereof.

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