Equipotential control device and method for plasma heating of continuous casting tundish
A continuous casting tundish and control device technology, which is applied in the direction of manufacturing tools, casting equipment, metal processing equipment, etc., can solve the problem that the temperature of molten metal is difficult to ensure stability, and achieve the effect of ensuring heating, ensuring stability, and ensuring effective changes
Active Publication Date: 2021-10-19
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology
With the existing tundish plasma heating equipment, without external supplement, it is difficult to keep the temperature of the molten metal in the tundish stable, and its fluctuation range reaches 40 degrees
Method used
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[0028] Such as figure 1 As shown, an equipotential control device for plasma heating of a continuous casting tundish, the device is controlled by a PLC control system, the tundish 1 contains a slag layer 2 and molten steel 3, including pre-buried between the refractory material layers of the tundish 1 The steel wire 4 is connected to the zero potential sampling point of the PLC control system. One end of the steel wire 4 leaks about 3~5mm from the bottom of the tundish 1, and the other end of the steel wire 4 is connected to a galvanized round steel 5. And it is reliably connected with the shell of the tundish 1, the galvanized round steel 5 is connected with an insulated flexible wire, the insulated flexible wire is connected with an electrode 6, the electrode 6 is installed on the lifting device, and the PLC control system is connected to and controls the lifting device.
[0029] The electrode 6 includes an anode and a cathode. The electrode 6 is connected to an external pow...
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The invention relates to an equipotential control device and method for plasma heating of a continuous casting tundish, and belongs to the technical field of process equipment for continuous casting of metal slabs. An equipotential control device for plasma heating of a continuous casting tundish. The device is controlled by a PLC control system. The tundish contains a slag layer and molten steel, including steel wires pre-buried between the refractory material layers of the tundish. The steel wires are connected To the zero potential sampling point of the PLC control system, one end of the steel wire leaks about 3~5mm from the bottom of the tundish, and the other end of the steel wire is connected to a galvanized round steel, which is reliably connected to the shell of the tundish There are insulated flexible wires, and the insulated flexible wires are connected with electrodes, and the electrodes are installed on the lifting device, and the PLC control system is connected to and controls the lifting device. According to the liquid level change when the molten steel rises or falls, the present invention can timely feedback and adjust the PLC system to control the rise or fall of the electrode, so as to ensure the effective change of the arc length and ensure the stability of heating.
Description
technical field [0001] The invention relates to an equipotential control device and method for plasma heating of a continuous casting tundish, and belongs to the technical field of process equipment for continuous casting of metal slabs. Background technique [0002] The tundish is the key equipment on the continuous casting machine to use the liquid metal as a buffer before solidification and forming. It has the functions of connecting the supply of molten metal and improving the cleanliness of the molten metal, and plays a decisive role in the quality and production efficiency of steel products. [0003] The constant temperature pouring of molten metal in the tundish is an important goal in the continuous casting production, and it is a necessary condition to ensure the quality of the continuous casting slab and the stable and smooth production. In the existing tundish plasma heating equipment, without external supplement, it is difficult to keep the temperature of the mol...
Claims
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IPC IPC(8): B22D41/01
CPCB22D41/01
Inventor 宋景欣王勇李京社杨树峰
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD