| 摘要 |
PROBLEM TO BE SOLVED: To extend the service line of a mesh belt by improving the furnace operation method of a mesh belt conveyor non-oxidation atmosphere heat treatment furnace. SOLUTION: A heat treatment furnace is provided with a furnace body where a heating camber 10 in that an entrance tunnel 11 and a heating part 12 are provided continuously is arranged in contact with the rear end of a mount stand 20, a heating source 25 in a heating part, and a high-temperature mesh belt 40 for configuring limitless orbit continuously traveling on a horizontal furnace floor surface 14a that penetrates through the entrance tunnel and the beating part from an area on a roller conveyor 21 being provided near the upper surface of the mount stand 20. In a first process, workpiece W being placed on the carrying stand by moving a mesh belt is fed into the heating chamber rapidly through the entrance tunnel before stopping. In a second process, the temperature of the workpiece in the heating chamber is increased based on a specific program by a heating source during the stop. In a third process, the mesh belt is moved again and the workpiece in the heating camber is taken out of the opening at the bottom of the furnace by moving the mesh belt again.
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