摘要 |
The present invention relates to a circulation-type heat treatment furnace. The heat treatment furnace comprises a heating furnace (100) for heating objects to be thermally treated and a cooling furnace (200) formed under the heating furnace (100) to cool the heated objects (60). The circulation-type heat treatment furnace can improve heat treatment efficiency by thermally treating the objects while the objects (600) to be treated circulate the heating furnace (100) and the cooling furnace along a closed curve track using a transfer device (400). |