To provide a novel gas nitriding furnace and gas soft nitriding furnace capable of preventing generation of solid matter caused by outflowing of treatment gas.
The gas nitriding furnace 100 includes a standby chamber 30 for passage and standby of an object S to be treated, between a heating chamber 10 for nitriding the object S to be treated and a pre/post-treatment chamber 20 for carrying out pretreatment and posttreatment of the object S to be treated. The standby chamber 30 has a heating means 38 for heating an interior of the standby chamber 30 to a predetermined temperature or more, and an exhaust means L3 for exhausting gas in the standby chamber 30. Since the treatment gas flowing out to the standby chamber 30 is discharged without solidifying thereby, deterioration of treatment efficiency of the whole treatment furnace is prevented which is due to generation of solid matter caused by outflowing of the treatment gas.
| JP2013248597 | LOW-OXYGEN ATMOSPHERE APPARATUS |
| JPS60164188 | METHOD OF DIVIDING ZONE OF HEATING FURNACE |
| JPH08134626A | 1996-05-28 | |||
| JPH04214852A | 1992-08-05 | |||
| JPH10185440A | 1998-07-14 | |||
| JPH03105194A | 1991-05-01 |
Yoshiaki Naito
Cui Shu Tetsu