The VTL series top charging vertical vacuum furnace is an efficient industrial equipment designed for long-axis, tubular and hanging heat treatment workpieces. The top vertical charging structure, combined with the vertical furnace body layout, significantly improves space utilization and operation convenience. The equipment can achieve complex processes such as quenching, annealing, solution and brazing through precise temperature control under vacuum or controlled atmosphere, especially suitable for processing thin and heavy workpieces that are easy to deform and require high precision. Its unique design can effectively reduce the risk of workpiece lifting deformation, widely used in aerospace engine rotors, energy equipment long axis, precision mold, semiconductor materials and other fields, suitable for high-temperature alloy, stainless steel, titanium alloy, ceramics and other materials without oxidation heat treatment, to ensure the performance of the workpiece uniformity, surface finish and dimensional stability, meet the stringent standards of high-end manufacturing.