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HEARTH ROLL FOR CONTINUOUS ANNEALING FURNACE AND MANUFACTURING METHOD OF HEARTH ROLL FOR CONTINUOUS ANNEALING FURNACE
HEARTH ROLL FOR CONTINUOUS ANNEALING FURNACE AND MANUFACTURING METHOD OF HEARTH ROLL FOR CONTINUOUS ANNEALING FURNACE
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机译:连续退火炉的热轧辊及制造方法
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PROBLEM TO BE SOLVED: To provide a hearth roll for a continuous annealing furnace capable of providing stable transportation of a metallic strip and making service life longer, and a manufacturing method of the hearth roll for the continuous annealing furnace.;SOLUTION: A hearth roll for a continuous annealing furnace comprises: a cylindrical outer layer sleeve 2 made of heat resistant steel; and a cylindrical inner layer sleeve 3 which is made of a metal having thermal conductivity higher than that of the outer layer sleeve 2 and containing copper, and of which the outer peripheral surface is joined to an inner peripheral surface of the outer layer sleeve 2. An angle θ1 formed by a free edge of an axial direction end part of the outer layer sleeve 2 and a joint boundary 6 between the outer layer sleeve 2 and the inner layer sleeve 3, and an angle θ2 formed by a free edge of an axial direction end part of the inner layer sleeve 3 and the joint boundary 6, satisfy formula (1) and one of formula (2) and formula (3). θ1+θ2=180° ±10° ...(1), 55°≤θ1≤80° ...(2), 125°≤θ1180° ...(3).;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2018,JPO&INPIT
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