| 摘要 |
<p>A heat processing furnace supplies gas from gas supply pipes and carries out heat processing on a heat processed article, and is capable of suppressing temperature deviation in a heat processing area. The heat processing furnace 10 carries out heat processing on the heat processed article 15 continuously in the heat processing area 12 in the furnace 2 by conveying the heat processed article 15 along a preset conveying direction. The gas supply pipes 4 are inserted in multiple positions in the furnace body along the conveying direction A in such a manner that the gas supply pipes are orthogonal to the conveying direction. The front ends 14a of the gas supply pipes inserting into the furnace body are sealed, and gas spraying ports 24 are arranged in multiple positions in the furnace body along the length direction of the peripheral wall 14b to supply air from an open end 14c opposite to the front end. For a pair of adjacent gas supply pipes along the conveying direction in the furnace body, one the gas supply pipe and the other gas supply pipe are inserted in the furnace body from opposite sides.</p> |
