| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat treatment oven capable of maintaining a condition for making a stable heat treatment through keeping the atmospheric temperature thereinside, and suitable for producing carbon fiber in particular, and to provide a method for producing carbon fiber using the heat treatment oven. SOLUTION: This heat treatment oven has such a construction as to have an opening through which a to-be-treated object is to be put into and drawn out of a heat treatment chamber and be respectively plurally arranged with nozzles to blow off hot air in the direction along the pathway for a to-be-treated object moving inside the heat treatment chamber and nozzles to suck such hot air on both sides of the pathway, and is characterized by having a means for maintaining the pressure p between the blow-off nozzles adjacent to each other and the pressure pout outside the heat treatment chamber so as to meet the relationship: p>=pout. |
