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AssigneeIpsen, Inc.
InventorsWerner Hendrik Grobler, Thomas Eversmann, Bernd Edenhofer, Jens Bechthold, Dirk Joritz, Nils Bernhagen
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For regulating process gases for heat treatments of metal materials/workpieces in industrial furnaces (1), which have at least one treatment chamber (2), at least one burnoff point (4) having at least one first valve (4.1), and a regulator (5) having pressure meter (5.1), the burnoff point (4) is only to be opened as a function of requirements related to the process gas. For this purpose, in a first step, with open first valve (4.1), a quantity of a flushing gas (6.1) of the gas mixture (6) of the respective process gas is supplied in a controlled manner to the industrial furnace (1) and then burned off, in a second step, the valve (4.1) is closed, the industrial furnace (1) is regulated to a preset furnace pressure and this is permanently detected via the pressure meter (5.1), in a third step, with the target pressure of the industrial furnace achieved, this pressure is detected via the pressure meter (5.1) and maintained, the first valve (4.1) further remaining closed. In a fourth step, the flushing gasification can be activated and adjusted. In the event of large pressure rise, in a fifth step, an overpressure flap (4.3) of the burnoff point (4) can be opened in a controlled manner via a fixed limiting value for pressure dissipation.
A method for controlling the flow of a process gas for the heat treatment of metal materials/workpieces in an industrial furnace (1), which has at least one treatment chamber (2), at least one burnoff point (4) having a first valve (4.1), and a regulator (5) having a pressure meter (5.1), wherein the process gas comprises a gas mixture (6) and is used as a flushing gas (6.1) and as a fresh gas (6.2), the method comprising the following steps:
Dependencies are inferred from the claim text.