Device for gas cooling of a heat treated workpiece (9) with a treatment container filled with a cooling gas and impacting the workpiece with a cooling medium useful in heat treatment of metal workpieces has liquid nitrogen as preferred

摘要

Device for gas cooling of a heat treated workpiece (9) with a treatment container filled with a cooling gas (10) involving impacting the workpiece with a cooling medium of boiling point below 0[deg]C, e.g. liquid nitrogen, or argon, helium and/or water. A control device is included with a sensor for measuring the temperature inside the treatment chamber.