Gas Pressure Sintering Furnace with Positive-Negative Dewaxing Function Positive pressure Positive pressure leak detection of dewaxing system: low-pressure nitrogen is filled into the dewaxing tank through the busbar, and the relative pressure transmitter of the dewaxing system detects the pressure in the tank. The user can set the upper and lower pressure limits (both in mbar). When the pressure in the tank reaches the upper limit, the inflation is stopped, and a period of