Método de tratamiento térmico

摘要

In a heat treatment process work pieces are placed within an oven in which the existing hot atmosphere is circulated by the jet injection of a further gas e.g. nitrogen to drive the circulation process. The injected gas is introduced essentially transverse to the oven longitudinal axis at a speed above 50 m/s, preferably above the speed of sound and at a pressure of 2 to 10 bar. The gas is injected in pulses together with a gaseous or liquid hydrocarbon agent at a pressure above 100 bar.