| 摘要 |
<p>A linear furnace body of a heat treatment furnace (1) has in its inside a preheating chamber (3), a heat treatment chamber (4), and a uniformly heating chamber (5) with partitioning doors (1, 2) provided between them. Independently driven hearth roller groups (6, 7, 8) are respectively provided in each of the chambers. At the time of preheating and uniform heating of work (W), two (6, 8) of the hearth roller groups of the preheating chamber (3) and uniformly heating chamber (5) are rotated in a normal direction and a reverse direction to oscillate the work (W). At the time of heating the work (W), one (7) of the hearth roller groups in the heat treatment chamber (4) is stopped.</p> |
