Flexible heat treatment system for the bright hardening under protective gas and quenching in oil of small and medium-sized products ■maximum hardening temperature 1050°C ■ annealing furnace ME 45/13 with protective gas annealing box ■ bright hardening and decarbonising-free hardening under nitrogen or forming gas ■ amount of circulation gas about 10 litres/min ■ content of oil bath: 300 litres ■ maximum charging weight 30 kg ■ oil lever indicator ■ double-wall type ■ mobile quenching system on wheels ■ pneumatic charging with fully automated upward and downward movement
■ optionally: oil heating and suction
Working method:
◆ The charge is placed at the bottom of the gas bell and will be pushed into the furnace together with the bell. ◆ When closing the furnace door, the hinge blade of the SHA 300 will automatically be stopped in the upright position. Heat-up under protective gas and hold at temperature. ◆ Open the furnace door, the hinge blade will be positioned horizontally and the bell will be drawn out of the furnace, it will be still under the protective gas. ◆ Above the oil level it will be flushed with protective gas in order to disperse the oxygen and to prevent the oil from inflaming. ◆ The charge including the bottom of the gas bell will be automatically drawn into the oil. After the upward and downward movement, the charge will be listed in order to be taken off.
