| 摘要 |
A straight type heat treatment furnace is provided to adjust the processing speed in heat treatment chambers according to the heat treatment condition by individually driving hearth rollers using a driving motor. A straight type heat treatment furnace comprises a preheating chamber(10), a heat treatment chamber(20), and a hardening chamber which are arranged in a straight configuration. The preheating chamber includes a loading door(11), a first partition door(12), and a first heater. A first hearth roller(14) is provided at a bottom of the preheating chamber to feed a workpiece. A circulation fan is provided at a top of the preheating chamber. The heat treatment chamber includes a second partition door(32) and a second heater. A second hearth roller(24) is provided at a bottom of the heat treatment chamber. The hardening chamber includes a discharge door(31), and a third heater. A third hearth roller(34) is provided at a bottom of the hardening chamber. |
