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Method for electromagnetically controlling steel ladle drainage and vortex slag entrapment at last stage of molten steel pouring

An electromagnetic control, ladle technology, applied in the direction of manufacturing tools, casting melt containers, metal processing equipment, etc., can solve the problems of reducing the cleanliness of molten steel, reducing the yield of molten steel, and low self-opening rate of ladle, and improving the recovery of molten steel. High yield, fast heating speed, and the effect of reducing slag entrainment

Pending Publication Date: 2021-12-17
NORTHEASTERN UNIV
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Problems solved by technology

This method needs to judge the direction of the vortex in advance, otherwise the applied electromagnetic field will accelerate the formation of the vortex, and the direction of the vortex formed at the end of the ladle tapping is determined by many factors, so it is difficult to judge
[0012] In summary, there are problems such as drainage sand polluting molten steel, low self-opening rate of ladle, vortex slag rolling at the end of tapping, and low yield of molten steel during molten steel pouring.
The existence of these problems will not only reduce the cleanliness of molten steel, affect the quality of steel, but also reduce the yield of molten steel

Method used

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  • Method for electromagnetically controlling steel ladle drainage and vortex slag entrapment at last stage of molten steel pouring
  • Method for electromagnetically controlling steel ladle drainage and vortex slag entrapment at last stage of molten steel pouring
  • Method for electromagnetically controlling steel ladle drainage and vortex slag entrapment at last stage of molten steel pouring

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Embodiment Construction

[0035] Below, the present invention will be further described in detail in conjunction with the accompanying drawings and specific implementation examples. However, the scope of protection of the present invention is not limited by specific implementations.

[0036] The structure of the device of the present invention is as figure 1 As shown, it mainly includes a seat brick 4, an upper nozzle 5, a slide plate 6, and an induction coil 7.

[0037] In the ladle manufacturing or rebuilding stage, the block 4 encapsulating the induction coil 7 is built at a designated position in the bottom substrate 3 of the ladle 2 , and the induction coil 7 is arranged around the upper nozzle 5 . The casting hole 11 at the center of the block brick communicates with the upper nozzle 5 . Before being packaged into the seating brick 4, the surroundings of the induction coil 7 are covered with heat insulating material. A slide plate 6 is arranged at the bottom of the upper nozzle 5 . The induct...

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Abstract

The invention belongs to the technical field of steelmaking and molten steel pouring, and particularly relates to a method for electromagnetically controlling steel ladle drainage and vortex slag entrapment at the last stage of molten steel pouring. In order to overcome the defects in the prior art, the invention provides the method for controlling automatic drainage and tapping of a steel ladle by applying alternating currents to a coil for induction heating in the drainage process, and applying direct currents to the coil at the last stage of molten steel pouring so as to generate a stable magnetic field around a water gap to inhibit vortexes. Pollution of stuffing sand to molten steel can be avoided, the automatic casting rate of the steel ladle is increased to 100%, slag entrapment caused by the vortexes can be restrained at the last stage of molten steel pouring, the cleanliness and the yield of the molten steel are increased, and the automation degree of steel production is also increased.

Description

technical field [0001] The invention belongs to the technical field of steelmaking and molten steel pouring, and in particular relates to a method for electromagnetically controlling ladle drainage and vortex slag rolling in the final stage of molten steel pouring. Background technique [0002] The cleanliness of molten steel directly affects the quality of steel products. The cleaner the steel, the better it will perform, and the more versatile and competitive the steel will be. The cleanliness of steel is mainly determined by the number, size and distribution of non-metallic inclusions, so it is very important to reduce non-metallic inclusions in steel. In actual production, the cleanliness of molten steel is often improved by refining outside the furnace, and the molten steel is subjected to degassing, deoxidation, desulfurization, removal of inclusions and fine-tuning of components in containers with vacuum, inert gas or reducing atmosphere. [0003] The casting proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/60B22D41/48
CPCB22D41/60B22D41/48
Inventor 王强赵立佳何明马帅朱晓伟刘晓明
Owner NORTHEASTERN UNIV
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