Method for safely stopping flow of double-flow slab caster in pouring
A technology of slab continuous casting machine and double-strand slab, which is applied in the field of metallurgy and can solve problems affecting production
Active Publication Date: 2021-01-08
LIUZHOU IRON & STEEL
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[0004] The invention provides a method for safely stopping the flow of a double-strand slab continuous casting machine during pouring, so as to solve the problem that the production is affected when the double-strand slab continuous casting machine is stopped
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[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention is now described.
[0026] Such as figure 1 , figure 2 and image 3 As shown, the tundish safety plug (also known as a safety plate) includes: a top plate 10, a support card platform 40 connected under the top plate, and a constriction portion 50 connected below the support card platform; the support card platform 40 is used for the top plate 10 is supported on the same plane as the water outlet, or the top plate 10 is fixed below the upper water outlet, and the contraction part 50 is used to fix the safety plug so that it will not shake; An inward and downward inclined surface, the support platform is a platform formed by a vertical plane and the slope; this support platform is suitable for the narrow space of the drain;
[0027] The top surface in contact with the upper nozzle is located on the top plate 10 of the tundish safety ...
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Abstract
The invention provides a method for safely stopping flow of a double-flow slab caster in pouring. The method comprises the following steps of A, keeping the superheat degree of a tundish in the previous heat and the heat of flow stopping over 30 DEG C; B, stopping flow operation in the middle and later periods of large ladle pouring, gradually reducing the pulling speed at a gear of 0.05m / min in the flow time of preparing flow stopping when the amount of large ladle molten steel is 30%, and reducing the pulling speed to 0.2-0.3m / min after the large ladle molten steel is poured; and C, planningthe heat of flow stopping, namely after the large ladle is poured and a new large ladle is transferred to a pouring position, not starting pouring, planning to stop production flow time, maintainingthe pulling speed of 0.1-0.3m / min, maintaining the normal pulling speed of the other flow, closing a stopper when the liquid level of the tundish molten steel is reduced to 50% of a normal productionheight, and stopping low-pulling-speed flow production by using a tundish safety plug for stopping flow of the double-flow slab caster. By the method, the casting flow production can be safely stoppedwhen the tundish of the double-flow slab caster is in a high liquid level state of over 50%.
Description
technical field [0001] The invention relates to the field of metallurgy, in particular to a method for safely stopping flow of a two-strand slab continuous casting machine during casting. Background technique [0002] Once the production of the conventional slab continuous casting process is interrupted, the production needs to be reorganized after the end of the production. The same is true for the double-strand slab, which seriously affects the production efficiency. [0003] To sum up, the following problems exist in the prior art: once the production strands in the double-strand slab continuous casting process are interrupted, the production needs to be terminated and then reorganized, which seriously affects the production efficiency. Contents of the invention [0004] The invention provides a method for safely stopping the flow of a double-strand slab continuous casting machine during pouring, so as to solve the problem that production is affected when the flow of th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B22D11/18B22D41/20
CPCB22D11/18B22D41/20
Inventor 钱学海周从锐胡鳌全唐锡明周博文李西德邓深樊雷阮志勇
Owner LIUZHOU IRON & STEEL