| 摘要 |
PROBLEM TO BE SOLVED: To provide a partition door which partitions chambers in a continuous vacuum carburizing furnace and the thermal deformation of which is minimized even when a temperature raising chamber, a carburizing chamber, a diffusion chamber, or a carburizing and diffusion chamber is exposed to high temperature of about 1,000 deg.C and carburizing gas and the carburized part of which can be replaced without forming the whole partition door from that having heat resistance capable of withstanding high temperature of about 1,000 deg.C. SOLUTION: The partition door 1 has a partition door body 10, and a heat- resistant and carburizing-resistant covering member 11 for covering opening parts 4 and 5 of a chamber and fitted to both sides of the partition door body 10, and is held by a plurality of L-shaped fixed members 12 disposed in a circular notch 13 made in a partition door supporting frame 17 and disposed inwardly in a circumferential direction, with a slight space in the transverse direction, and with a space (d) in the radial direction from the inner circumference of the circular notch 13.
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