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A nozzle swirl generating device and a nozzle swirl continuous casting method

A generating device and swirl generator technology, which is applied to casting equipment, casting molten material containers, metal processing equipment, etc., can solve the problem of affecting the service life of the submerged nozzle, the guide groove is easily blocked or eroded, and the swirl strength is weakened, etc. problems, achieve the effect of reducing nozzle nodulation, preventing nozzle clogging, and improving flow state

Active Publication Date: 2018-05-29
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the electromagnetic swirl method, the electromagnetic force that generates the swirl needs to be provided by consuming electric energy, and the electromagnetic swirl device also needs to spend a lot of equipment costs
For the blade swirling method, there is always a shortcoming in blade life, and the deposition of non-metallic inclusions on the blade surface can easily lead to blockage of the nozzle
For the guide groove swirl method, it is not easy to process a spiral guide groove on the inner wall of the submerged nozzle, and the guide groove is easily blocked or corroded, which weakens the swirl strength and affects the service life of the submerged nozzle

Method used

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  • A nozzle swirl generating device and a nozzle swirl continuous casting method
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  • A nozzle swirl generating device and a nozzle swirl continuous casting method

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specific Embodiment

[0052] In the continuous casting production process, the size of the cylindrical swirl generator and the cylindrical swirl tundish can be set according to the actual production capacity requirements. The specific dimensions are as follows:

[0053] Cylindrical swirl generator: the generator cylinder 1 can be of equal diameter structure or variable diameter structure. When the equal diameter structure is preferred, the inner diameter of the generator cylinder 1 is 100mm-500mm, and the generator molten steel inlet 2 can be a circular pipe , rectangular tube or other shape tubes, preferably circular tubes, the inner diameter of the generator molten steel inlet 2 is 10 mm to 100 mm, the number of generator molten steel inlets 2 is preferably 1 to 2, and the number of slag retaining weirs 6 is preferably 4 and can be cuboid The length, width and height of the slag retaining weir 6 are 20mm-100mm, 20mm-50mm and 20mm-200mm respectively.

[0054] Cylindrical swirling tundish: the tund...

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Abstract

A nozzle cyclone generating device and a nozzle cyclone continuous casting method. The device is divided into a cylindrical cyclone generator and a cylindrical cyclone tundish. The cylindrical cyclone generator is installed inside the traditional continuous casting tundish. The traditional continuous casting The inner cavity of the tundish is connected to the immersed nozzle through the cylindrical cyclone generator; the cylindrical cyclone tundish has two installation forms. The first one: the cylindrical cyclone tundish is used in conjunction with the traditional continuous casting tundish. The cyclone tundish is installed outside the traditional continuous casting tundish, and the traditional continuous casting tundish is connected to the immersed nozzle through the cylindrical cyclone tundish; the second type: the cylindrical cyclone tundish is used alone, and the nozzle of the ladle is It is directly connected to the immersed water inlet through the cylindrical cyclone tundish. The method is: before continuous casting, select the nozzle swirl generating device according to the continuous casting process, and then assemble it with the traditional continuous casting tundish. During continuous casting, the molten steel will rotate under the action of the gravity of the molten steel and the tangential inlet, and the immersed The molten steel in the nozzle produces a rotating flow.

Description

technical field [0001] The invention belongs to the technical field of metal liquid pouring in the metallurgical industry, and in particular relates to a nozzle swirl flow generating device and a nozzle swirl continuous casting method. Background technique [0002] The quality of iron and steel products is crucial to improving the competitiveness of iron and steel enterprises, and the production process of continuous casting of iron and steel is an important part of determining the quality of iron and steel products. In the continuous casting process of iron and steel, after passing through the ladle and the tundish, the molten steel will flow into the crystallizer through the submerged nozzle connected to the tundish, and cool and solidify in the mold to form a slab, while the flow of molten steel in the mold Field, temperature field and the stability of molten steel liquid level are crucial to the quality of casting slab. [0003] Since the flow behavior of molten steel i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/50B22D41/00
CPCB22D41/00B22D41/507
Inventor 厉英倪培远
Owner NORTHEASTERN UNIV LIAONING
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