Horizontal vacuum carburizing furnace is applied for the carburizing and quenching after carburzing of materials like structure steel (20CrMnTi, 12Cr2Ni4A, 12Cr2Ni3A), high alloy carburizing steel, stainless steel (1Cr13, etc), quenching of tool steel and die steel, quenching and annealing of gear parts, precision bearing, glib pump mechanical parts, precision machine parts.