Online molten steel sampling azotification method for molten steel online sampling device
A sampling device and molten steel technology, applied in the field of metallurgical industry production, can solve the problems of difficulty in stabilizing product quality, high price, and inability to accurately monitor the nitrogen increase value, and achieve the effects of low cost, convenient operation, and easy production and replacement.
Inactive Publication Date: 2016-02-24
WUHU XINXING DUCTILE IRON PIPES
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Problems solved by technology
However, due to the high price of online sampling nitrogen determination equipment, most domestic manufacturers do not have special sampling nitrogen determination equipment, resulting in the inability to accurately monitor the nitrogen increase value of each process in the smelting process, which brings certain difficulties to the stability of product quality.
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[0036] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0037] Such as figure 1 The structure of the present invention shown is a molten steel online sampling device, which is applied to the online molten steel sampling and nitrogen determination method, and is an online molten steel sampling device for steelmaking plants in the metallurgical industry.
[0038] In order to solve the problems existing in the existing sampling and nitrogen determination tooling equipment and overcome its defects, and realize the invention purpose of online sampling and tracking the amount of nitrogen increase, the technical scheme adopted by the present invention is:
[0039] Such as figure 1 As shown, t...
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Abstract
The invention discloses a molten steel online sampling device, which comprises a sampling cup (2), a sampling rod (1) and a sampling cup lid (3); the sampling rod (1) is parallel with an outer cylinder generatrix of the sampling cup (2), and is welded on the outer wall of the sampling cup (2). The invention also discloses an online molten steel sampling azotification method applied to the molten steel online sampling device. By adopting the abovementioned technical scheme, the nitrogen incremental amount of all procedures in a smelting process can be monitored in real time, accurate data can be provided for research of reducing the nitrogen content in molten steel, a sampling and azotification result error is within 5 ppm, and a special-supply steel nitrogen control process is benefited through optimization; the device is simple in structure, easy to manufacture and replace, low in cost, circularly usable, environment-friendly and durable; the azotification method is convenient to operate, and easy for popularization and application in large, excellent and special steel plants.
Description
technical field [0001] The invention belongs to the technical field of metallurgical industrial production. More specifically, the present invention relates to an online sampling device for molten steel. In addition, the invention also relates to the online molten steel sampling and nitrogen determination method of the device. Background technique [0002] With the development of the metallurgical industry, customers have higher and higher requirements for steel quality and purity. [0003] ω(N) in steel has great influence on the mechanical properties of steel. When the content of ω(Al) and ω(B) in the steel is high, a large amount of AlN and BN embrittlement phases are easily formed. During the continuous casting process, the local area of the slab is in a two-dimensional heat transfer state, and its cooling intensity is higher than that in the middle of the slab, and the produced AlN is preferentially precipitated in the austenite grain boundary along with the softer...
Claims
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Login to View More IPC IPC(8): G01N1/12G01N1/28
CPCG01N1/125G01N1/286G01N2001/1031G01N2001/2873
Inventor 朱喜达黄雁韩伦杰杨伟勇
Owner WUHU XINXING DUCTILE IRON PIPES