Technique method for increasing cold welding steel tundish continuous-casting number
A process method and tundish technology, applied in the field of steel smelting, can solve the problems of increased energy consumption, environmental pollution, easy junction of nozzles, etc., and achieve the effects of reducing work intensity, reducing energy consumption, and maintaining stable quality.
Inactive Publication Date: 2009-06-10
SHAGANG GROUP
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Generally, when the tundish of high-alumina billet cold pier steel produced by electric furnace is cast, the nozzle is easy to congeal, so the continuous pouring times of the tundish are generally 5 to 8 furnaces, and then the tundish needs to be replaced, resulting in unstable product quality. , increase energy consumption, increase the cost of solid waste disposal, increase the work intensity of workers, and pollute the environment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0006] It is strictly forbidden to drop slag when tapping in the smelting shaft furnace. When the molten steel in the ladle reaches about 10 tons during the tapping process, aluminum ingots are added for deoxidation and alloying. After the steel is finished, lift the molten steel to the waiting position for refining, and at the same time turn on the bottom of the ladle to blow argon for soft stirring, then turn the ladle turret to the refining position, and turn on the power for smelting. In the middle of smelting, feed the calcium iron wire for 200 meters. Adjust the composition of the steel and raise the temperature at the same time. After the refining is completed, feed the calcium iron wire for the second time for 150 meters, and at the same time perform soft stirring for more than 7 minutes to ensure that the inclusions in the steel can fully float up. Lift the ladle to the continuous casting for casting. Put some silicon-calcium powder in the upper nozzle. During the cast...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a technical method for improving tundish continuous casting frequency of cold heading steel. The method comprises the steps that aluminium ingot is added in a vertical furnace when tapping water reaches about 10 tons, the aluminium ingot filling is completed before the tapping ends, the tapping time is controlled to be between 3.5 and 4.0 minutes, a calcium iron line is fed when liquid steel is refined, softly stirring of the liquid steel after smelting is completed with the time more than or equal to 7 minutes, liquid steel is subjected to casting, silicon-calcium powder is put at an upper ladle nozzle, the superheat temperature of the liquid steel is controlled to be between 35 and 45 DEG C during casting, and the pulling speed is controlled to be between 2.3 and 2.7m / min, the whole process is subjected to protection casting, and the temperature fluctuation of two furnaces is within 10 DEG C. The quality of the products by the method is adopted is stable, and the method reduces energy consumption and the cost to treat solid waste, and reduces the work intensity of workers and the pollution to the environment.
Description
technical field [0001] A steel smelting method, in particular to a smelting and casting process in the smelting process of cold pier steel. Background technique [0002] Generally, when the tundish of high-alumina billet cold pier steel produced by electric furnace is cast, the nozzle is easy to congeal, so the continuous pouring times of the tundish are generally 5 to 8 furnaces, and then the tundish needs to be replaced, resulting in unstable product quality. , Increase energy consumption, increase the cost of solid waste disposal, increase the work intensity of workers, and pollute the environment. Contents of the invention [0003] The object of the present invention is to provide a process for increasing the number of continuous pouring times of the cold pier steel tundish, so as to increase the number of continuous pouring of the tundish, stabilize product quality and reduce energy consumption. [0004] In order to achieve the above-mentioned purpose of the inventio...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B22D46/00B22D47/00
Inventor 曹斌王德刚蒋关林朱丽国
Owner SHAGANG GROUP