| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-treatment furnace enabling the change of the width of an opening formed on a sidewall according to the thickness of a strand group horizontally traveling in the heat-treatment furnace. SOLUTION: The heat-treatment furnace is provided with a heat-treatment chamber 31 having a pair of sidewalls 4, 6 provided with a plurality of slit openings 25, 27 through which a horizontally traveling strand group 3 is reciprocatively entering into and leaving from the chamber, and a means for heating the strand group 3 in the heat-treatment chamber 31. The sidewall is composed of perforated sidewalls 5, 7 having a plurality of slits 9, 11 horizontally directing the longitudinal direction of the slit, and mobile plates 13, 15 superposed to the outer side of the perforated sidewall in vertically slidable manner and having a plurality of slits 17, 19 horizontally directing the longitudinal direction of the slit. COPYRIGHT: (C)2006,JPO&NCIPI
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