The present invention is undercurrent type passage mechanism for magnesium alloy melt converter and belongs to the field of metal material processing technology and metallurgical technology. The undercurrent type passage mechanism includes undercurrent passage for magnesium alloy melt to flow through, cooling water jacket with water inlet and water outlet separately on two ends, induction heating coil around the water jacket, resistance wires embedded inside annular silicon carbide furnace body around the undercurrent passage, heat insulating material outside the silicon carbide furnace body, and support. The present invention has simple operation, convenient control, fast response and the undercurrent passage made of stainless steel to avoid contamination on magnesium alloy melt. |