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Method for capturing continuous casting inclusion and novel submersed nozzle

An inclusion and immersion technology, which is used in casting melt containers, casting equipment, manufacturing tools, etc., can solve the problems of insufficient consideration and consideration of the ability of immersion nozzles to adhere and remove inclusions, so as to improve the melting ability, The effect of preventing slag entrainment and improving the quality of the slab

Active Publication Date: 2013-06-26
ZHONG NAT ENG & RES CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In existing submerged nozzle devices, insufficient or no consideration has been given to the ability of the submerged nozzle itself to adhere and remove inclusions

Method used

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  • Method for capturing continuous casting inclusion and novel submersed nozzle
  • Method for capturing continuous casting inclusion and novel submersed nozzle
  • Method for capturing continuous casting inclusion and novel submersed nozzle

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Embodiment Construction

[0056] The present invention will be further described below according to accompanying drawing.

[0057] Such as figure 1 As shown, the submerged nozzle 1 with the function of capturing inclusions of the present invention is composed of upper and lower parts, the upper part 2 of the nozzle is a submerged nozzle with conventional functions; the lower part 3 of the nozzle is a part longer than the conventional submerged nozzle , is an inclusion trapping device; the upper part of the nozzle 2 and the lower part of the nozzle 3 are closely connected. When in use, the submerged nozzle is inserted into the molten steel in the mold 4, and the molten steel in the mold 4 rotates under the action of the electromagnetic stirring of the mold, and the inclusions in the molten steel will accumulate toward the center and be mixed with the lower part 3 of the nozzle. The inclusion capture device collides with it, is captured by it, and adheres to the surface of the inclusion capture device, ...

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Abstract

The invention relates to the field of metal solidification and continuous casting, in particular to a method for capturing continuous casting inclusion and a novel submersed nozzle. The novel submersed nozzle (1) with a function of capturing the continuous casting inclusion consists of an upper part and a lower part, namely a submersed nozzle upper part (2) and a submersed nozzle lower part (3); the submersed nozzle upper part (2) is provided with a submersed nozzle side outlet hole (5) which has a conventional molten steel guidance function; the submersed nozzle upper part (2) is provided with the submersed nozzle lower part (3) which is tightly connected with the submersed nozzle upper part (2) and has an inclusion capturing function, so that the inclusion on in the rotary molten steel is captured by the submersed nozzle lower part (3) and gathers on the outer surface of the lower part of the submersed nozzle lower part (3) and the function of effectively removing the inclusion fromthe molten steel is realized. The novel submersed nozzle has long service life, and can effectively remove the inclusion from the molten steel, improve the casting blank quality, and prolong the service life of a crystallizer.

Description

technical field [0001] The invention relates to the fields of metal solidification and continuous casting, in particular to a method for capturing inclusions in continuous casting and a submerged nozzle thereof. Background technique [0002] With the continuous progress of metallurgical technology, the development of the national economy has higher and higher requirements for high strength, high toughness and service life of steel products. In particular, automobiles, high-speed trains, cable bridges, etc. have higher requirements on the fatigue life of steel, and the control of inclusions in steel is becoming more and more strict. The total amount of inclusions in steel (usually expressed by total oxygen content) has changed from the past Dozens of ppm and dozens of ppm are reduced to several ppm, and the service life and safety performance of steel are improved. [0003] At present, in the iron and steel production process, the removal of inclusions mainly depends on ladl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/10B22D41/50
Inventor 干勇张慧吴夜明王明林席常锁姬秀琴王玫陶红标吕晓军
Owner ZHONG NAT ENG & RES CENT
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