ROLLER DEVICE FOR INDUCTION HEATING

摘要

PROBLEM TO BE SOLVED: To provide a reduced weight roller not requiring a hole machining for a jacket room. SOLUTION: Multiple hollow pipes 10 made of a magnetic material are arranged in parallel in the longitudinal direction along a circumference. A roller is constituted by connecting the arranged hollow pipes each other as a cylinder. The insides of the individual hollow pipes are designated as a jacket room sealing a heating medium in gas/liquid two phases. In place of the follow pipes, a long piece comprising vertical and horizontal walls may be used, and hollow parts for the jacket rooms may be formed between the neighboring long pieces by arranging the individual long pieces.