Method for continuously casting sheet band by dual roller

A twin-roll thin strip continuous casting and casting strip technology, which is applied in metal rolling and other directions, can solve problems such as limited effect, complicated equipment, and inconvenient operation, and achieve the effects of improving production efficiency, reducing surface roughness, and improving surface quality

Active Publication Date: 2009-06-03
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the disadvantages of traditional thin strip continuous casting technology, such as inconvenient operation, complex equipment, limited effect, etc., and provide a method for high-speed, high-quality twin-roll thin strip continuous casting, which can be realized in thin strip continuous casting operations, Improve the quality of cast strip products, increase production efficiency, and reduce production costs

Method used

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  • Method for continuously casting sheet band by dual roller
  • Method for continuously casting sheet band by dual roller
  • Method for continuously casting sheet band by dual roller

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Embodiment Construction

[0024] In order to better understand the above technical solutions of the present invention, a further detailed description will be given below in conjunction with the drawings and embodiments.

[0025] see figure 1 , figure 2 Shown, strip continuous casting method of the present invention is realized by following steps:

[0026] A. Before pouring, open the argon and hydrogen valves, and control the ratio of argon and hydrogen according to the process requirements of different cast strip quality to generate mixed gas;

[0027] B. Enter the mixed gas into the molten pool formed by the rotating water-cooled crystallization 5 rollers through the gas introduction pipe 8, so that the mixed gas is filled with the airtight chamber 7;

[0028] C. At the beginning of pouring, the molten steel enters the molten pool filled with argon and hydrogen gas mixture from the ladle 1 through the long nozzle 2, the tundish 3 and the submerged nozzle 4, and the molten steel S is cooled by the w...

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Abstract

The invention discloses a double- roller sheet band continuous casting method. It induces mixture gas of argon gas and hydrogen into molten steel, reasonably controls the ratio of mixture gas to decrease oxygen partial pressure. Thus, the condensate depression of molten steel is decreased, and molten steel curing condition is altered, molten steel and crystal roller contacting time are increased. It improves producing efficiency. It also decreases the surface roughness of casting band and improves equal-axial crystal ratio, refines crystal grain.

Description

technical field [0001] The invention relates to a thin strip continuous casting process in metallurgical casting, in particular to a twin-roll thin strip continuous casting method. Background technique [0002] In recent decades, with the advancement of continuous casting technology and the improvement of online computer control, metallurgical industries in various countries in the world have been hoping to reduce energy consumption and production costs in the iron and steel industry. Therefore, it has become a research topic to directly cast molten steel into finished products. goal pursued tirelessly. [0003] One of the main forms of thin strip continuous casting is that molten steel passes through high-speed rotating crystallization rolls, and is solidified into a 2-5mm cast strip under the action of rolling force. At present, the basic technological process of thin strip continuous casting production is: thin strip continuous casting machine (twin roll, single roll, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/46B22D11/11
Inventor 于艳方园崔健
Owner BAOSHAN IRON & STEEL CO LTD
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