A kind of molten steel precooling device and method
A pre-cooling and molten steel technology, applied in the field of steel casting equipment, can solve the problems of slow crusting, slow cooling speed, and affecting steel quality, etc., and achieve the effects of convenient use, faster cooling and crusting, and improved quality
Active Publication Date: 2018-02-06
嘉兴御创电力科技有限公司
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Problems solved by technology
The traditional cooling of molten steel is to set a large amount of molten steel in a cooling chamber and let the molten steel stand for cooling. The cooling speed of molten steel in this cooling method is slow, and the crusting is slow, and the molten steel will be mixed with air to varying degrees during the cooling process Contact, produce bubbles, seriously affect the quality of steel
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[0015] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0016] see figure 1 A molten steel precooling device according to the present invention includes a housing 10, and two sides near the bottom of the housing 10 are respectively provided with an inflow pipe 21 and an outflow pipe 22 for molten steel. The inflow pipe 21 and the outflow pipe 22 have the same pipe diameter and are symmetrically arranged at both ends of the casing 10 . The upper ends of the inflow pipe 21 and the outflow pipe 22 are provided with an inert gas inlet pipe 31 and an air outlet pipe 32 respectively, and the inert gas may be nitrogen, argon or other inert gases. The diameters of the inlet pipe 31 and the outlet pipe 32 are the same, and one end thereof communicates with the casing 10 respectively. The end of the end of the...
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The invention discloses a molten steel precooling device which comprises a shell, a flow-in pipe, a flow-out pipe, an air inlet pipe and an air outlet pipe. A cover plate is hinged to the end, connected with the shell, of the air inlet pipe, the input end of the air inlet pipe is provided with an air-blowing motor and an air supply bin, the air inlet pipe is provided with a flow control switch, and a temporary storage bin for inert gas is connected to the output end of the air outlet pipe; the top of the shell is provided with an extraction opening, an extraction mechanism is arranged at one side of the extraction opening, the extraction mechanism comprises an extraction pipe, a filter and an exhaust fan, and a first concentration sensor is arranged on the joint of the extraction opening and the shell; a first temperature sensor and a second temperature sensor are arranged on the joint of the air inlet pipe and the shell and the joint of the extraction pipe and the shell respectively, and at least one second concentration sensor is arranged on the inner wall of the shell. The molten steel precooling device can effectively avoid the contact of molten steel and air, accelerate cooling and crusting of the molten steel and improve the quality of steel.
Description
technical field [0001] The invention relates to the field of steel casting equipment, in particular to a molten steel precooling device and method. Background technique [0002] In the process of steel production, molten steel needs to be cooled to form a slab, and the solidification process of molten steel undergoes cooling of molten steel, formation of crystal nuclei, growth of crystal nuclei and complete solidification in sequence. Generally speaking, the more crystal nuclei formed in the early stage of solidification, the more refined the history of molten steel after solidification, and the better the quality of steel. Therefore, the quality of the initial stage of solidification of molten steel is particularly important to the quality of steel. The traditional cooling of molten steel is to set a large amount of molten steel in a cooling chamber and let the molten steel stand for cooling. The cooling speed of molten steel in this cooling method is slow, and the crustin...
Claims
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IPC IPC(8): B22D27/04B22D27/08C21C7/00
CPCB22D27/003B22D27/04B22D27/08C21C7/00
Inventor 陈瑛
Owner 嘉兴御创电力科技有限公司