Vacuum heat treatment furnace

The invention discloses a vacuum heat treatment furnace, and relates to the technical field of heat treatment furnaces. The vacuum heat treatment furnace comprises a furnace body and a plurality of heating devices, wherein a heating chamber is arranged in the furnace body; and the heating devices are located on the upper side, the front side, the rear side, the left side, the right side and the lower side of the heating chamber. According to the invention, the heating devices are arranged on the front face, the rear face, the left face, the right face, the upper face and the lower face of the heating chamber respectively, the heating chamber is provided with six heating faces, and six-face heating is conducted on a workpiece in the heating chamber, so that the workpiece is evenly heated in a heat treatment process, and the heating speed is increased. 本发明公开了一种真空热处理炉，涉及热处理炉技术领域，包括炉体和多个加热装置，炉体的内部具有加热室，加热装置位于加热室的上侧、加热室的前侧、加热室的后侧、加热室的左侧、加热室的右侧和加热室的下侧。加热室的前、后、左、右四个面和上下两个面分别设有加热装置，加热室一共有六个加热面，对加热室内的工件进行六面加热，热处理过程中使工