Secondary Cooling Water Control Method for Irregular Billets
A control method and special-shaped billet technology, which is applied in the field of iron and steel metallurgy, can solve the problems of billet straightening and low temperature in the billet head area, etc., and achieve the effects of ensuring straightening, improving the success rate of casting, and increasing the temperature
Active Publication Date: 2021-06-08
CONTINUOUS CASTING TECH ENG OF CHINA
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Problems solved by technology
[0006] In view of the above problems, the purpose of the present invention is to provide a secondary cooling water control method for special-shaped billets to solve the problem that when the special-shaped billet continuous casting machine starts casting, the temperature in the billet head area is too low to straighten the billet through the tension leveler
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[0035] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.
[0036] Aiming at the above-mentioned problems existing in the control method of the dummy head and the amount of pouring water in the current special-shaped billet continuous casting machine, the present invention provides a secondary cooling water control method for special-shaped billets. Ensure that the slab passes through the straightening machine smoothly, and at the same time increase the temperature of the slab head area at the time of casting, ensure that the slab can be straightened, and improve the success rate of casting of the special-shaped slab casting machine.
[0037] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying dr...
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The invention provides a secondary cold water control method for a special-shaped billet, which is used for controlling the special-shaped billet to enter the secondary cold water area from a crystallizer for cooling after the continuous casting machine is poured. On the second side, the first side of the special-shaped blank and the upper flange of the second side have a slope, and the slope is formed by the special-shaped pressing plate; the secondary cold water area is divided into 5 cooling zones, and each cooling zone is provided with a corresponding cooling control circuit, Each cooling control circuit has a corresponding relationship with the inner arc surface, outer arc surface and two side surfaces of the special-shaped blank, and the corresponding relationship is the combination of different cooling control circuits and / or cooling control circuits and the inner arc surface and outer arc surface of the special-shaped blank. , the corresponding cooling control relationship of the first side and the second side; according to the corresponding relationship, the special-shaped blank is cooled in five cooling zones in turn. The invention can solve the problem that the temperature of the billet head area is too low when the special-shaped billet continuous casting machine starts pouring, and the billet cannot be straightened by the tension leveler.
Description
technical field [0001] The invention relates to the technical field of iron and steel metallurgy, and more specifically, relates to a method for controlling the secondary cooling water of a special-shaped billet. Background technique [0002] At present, when the special-shaped billet casting machine is started to pour, two bolts are inserted into the inscribed circles on both sides of the dummy head as the dummy rod. In order to prevent pull-off, the casting speed of the casting machine is very low. The conventional method of controlling the amount of water is to spray water with the minimum amount of water when the billet head enters the cooling zone to cool the billet head and avoid pulling it off. Especially for the section of large special-shaped billet (for example, 1200×500×120mm), the pouring speed is only 0.2-0.4m / min. In the case of such a low casting speed, the temperature of the billet head is often very low. Below 600°C. Under such low temperature conditions, ...
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IPC IPC(8): B22D11/22B22D11/08
CPCB22D11/083B22D11/225
Inventor 谢长川刘伟涛宁曙光张钊
Owner CONTINUOUS CASTING TECH ENG OF CHINA