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Straight-through submerged nozzle with stirring effect

A straight-through, immersion-type technology, applied in the direction of casting molten material containers, manufacturing tools, metal processing equipment, etc., can solve various problems that cannot be solved, have no stirring effect, cannot achieve the effect of stirring molten steel, etc., and achieve suitable Good for promotion, simple structure and remarkable effect

Active Publication Date: 2012-11-07
江苏华滋能源工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can also be known from the analysis that since the thread on the inner wall of the nozzle is divided into several sections, and the inner wall of the nozzle is provided with multiple concave platforms, the inner diameter of the nozzle has many mutations, so the thread has almost no stirring effect on the molten steel. More importantly, The nozzle is opened on both sides, so even if the threads in the vertical inner cavity have a stirring effect on the molten steel, it is difficult to transfer it to the crystallizer through the horizontal side holes
Therefore, this patent does not achieve the effect of stirring molten steel, and also cannot solve various problems in the above-mentioned molten steel pouring process

Method used

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Embodiment 1

[0020] See attached figure 1 , a straight-through submerged nozzle with a stirring effect, comprising a tubular body 1 that penetrates up and down, the body 1 defines an inner cavity 3, and a slag line 2 is provided on the outside of the side wall of the body 1, and the depth of the slag line 2 is 10-25mm, height 100-160mm, the distance between the lower end and the end of the nozzle is 30-100mm. The inner surface of the side wall is provided with a continuous spiral groove 4 from the opening end of the top of the body to the outlet end of the bottom of the body. The width of the upper surface of the spiral groove 4 is 20mm, the depth is 20mm, and the cross section in the depth direction is triangular. Of course, this The spiral groove at the center can also be rectangular or trapezoidal, the pitch of the spiral groove 4 is 50 mm, the cross-sections of the body 1 and the inner cavity 3 are circular, the side wall thickness of the body 1 is 40 mm, and the diameter of the inner ...

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Abstract

The invention belongs to the technical field of continuous casting of the iron and steel industry, and particularly relates to a submerged nozzle device with a stirring effect for square billet and round billet continuous casting molds. The submerged nozzle device comprises a vertically through tubular body, an inner cavity is defined by the body, a slag line is sleeved outside the side wall of the body, and connected spiral grooves are arranged on the inner surface of the side wall of the body. Cleanliness and the mechanical property of molten steel are improved, and the submerged nozzle device has the advantages of simple structure, remarkable effect, low cost and suitability for popularization.

Description

technical field [0001] The invention belongs to the technical field of continuous casting in the iron and steel industry, and in particular relates to a submerged nozzle device for a billet and round billet continuous casting crystallizer with stirring effect. Background technique [0002] With the development of the national economy and the continuous improvement of the level of industrial modernization, the demand for high-quality steel is increasing. Continuous casting of steel is a process in which liquid steel with a certain degree of superheat is continuously cooled into a billet shell with a certain shape through a water-cooled crystallizer. In the continuous casting process, a very important step is to continuously inject the molten steel in the tundish into the mold by using the submerged nozzle device made of refractory materials. Under the existing technical conditions, the billet and round billet crystallizers mostly use straight-through submerged nozzles for po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/114B22D41/50
Inventor 徐海伦青雪梅马春武幸伟徐永斌
Owner 江苏华滋能源工程有限公司
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