| 摘要 |
A continuous gas carburizing furnace includes a gas carburizing processing chamber (a preheating chamber 2, a heating chamber 3, a carburizing chamber 4, a diffusion chamber 5 and a temperature decrease chamber 6) in which a gas carburizing process is performed on a workpiece 50, an oil quenching chamber 8 in which oil quenching is performed on the workpiece 50, and a gas quenching chamber 7 in which gas quenching is performed on the workpiece 50. The gas carburizing processing chamber includes a temperature decrease chamber 6 in which the temperature of the workpiece heated by a gas carburizing process is lowered. The temperature decrease chamber 6, the gas quenching chamber 7 and the oil quenching chamber 8 are arranged in that order from the upstream side to the downstream side in the conveying direction of the workpiece 50, and are adjacent to each other.
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