Method and device for automatic control of rh furnace top lance oxygen blowing

Abstract

The invention discloses a RH furnace top lance oxygen blowing automatic control method and a device; the method comprises the following steps: provides a display interface used for inputting control top lance oxygen blowing parameters by a user; the user inputs corresponding parameter values according to prompts of the display interface; controls the top lance to carry out oxygen blowing operation according to the parameter value inputted by the user; if the user modifies the parameters in the furnace top lance oxygen blowing process, then the parameter modification order is rejected, and the top lance is controlled to carry out oxygen blowing operation according to the parameters. The RH furnace top lance oxygen blowing automatic control method and device can prevent people from frequently calculating corresponding device operation parameters, and thereby eliminating influences to a follow up step because of abnormity of molten steel component and temperature generated by labor input errors.

Description

technical field [0001] The invention belongs to the technical field of RH refining, in particular, the invention relates to an automatic control method and device for oxygen blowing of RH top lances. Background technique [0002] RH refining furnace is a secondary refining process device for molten steel used to produce high-quality steel. The RH refining furnace top gun device is mainly composed of the top gun lifting device, the top gun body, the vacuum sealing channel, the gun storage facility and other parts. . [0003] During the vacuum treatment of molten steel, the top gun can be used to blow oxygen into the molten steel in the vacuum chamber according to the process requirements for forced decarburization and chemical heating of aluminum. During molten steel treatment, the top gun is used to blow oxygen into the molten steel in the vacuum chamber for forced decarburization and aluminum chemical heating. On the other hand, the aluminum chemical heating operation ca...

AI Technical Summary

Problems solved by technology

Due to the amount of molten steel, the amount of decarburization by oxygen blowing, the compensation temperature (the compensation temperature is the temperature of the molten steel caused by the heat released by the oxidation-reduction reaction of aluminum and the metal oxide in the molten steel), the amount of aluminum consumption and other parameters vary from furnace to furnace. There are differences between times, so each furnace needs to manually calculate the oxygen blowing amount and aluminum consumption parameters. During the manual calculation, due to calculation errors or improper setting of the corresponding device operation parameters after calculation, it is easy to cause operational errors, resulting in strong oxygen blowing. The function of decarburization or aluminum chemical heating cannot achieve the purpose of the process

On the one hand, the carbon content of molten steel is out of control, resulting in steel modification; on the other hand, it leads to abnormal temperature loss in the molten steel treatment process, which affects subsequent processes.

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