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A working method of two-strand slab continuous casting

A slab continuous casting and double-strand slab technology, which is applied in the field of metallurgy, can solve problems affecting production, etc., and achieve the effects of improving operation rate, reducing downtime and maintenance time, and reducing closing and capping time

Active Publication Date: 2021-10-01
LIUZHOU IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an operation method of double-strand slab continuous casting to solve the problem that the production is affected after the flow of the double-strand slab continuous caster is stopped during pouring

Method used

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  • A working method of two-strand slab continuous casting
  • A working method of two-strand slab continuous casting
  • A working method of two-strand slab continuous casting

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Embodiment Construction

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention is now described.

[0041] Taking a converter with a tapping capacity of 150t and a double-strand slab caster with cross-sections of 220mm×1250mm and 220mm×800mm to produce SPHC series steel grades as an example, the working method of the present invention includes the following steps:

[0042] T1: Method for safely stopping flow of double-strand slab continuous casting machine during pouring;

[0043] T2: The method of closing and capping the slab continuous casting;

[0044] T3: Method for non-stop local overhaul of double-strand slab caster after closing and capping;

[0045] T4: The method of changing the cross section during pouring of the double-strand slab continuous caster after maintenance;

[0046] T5: the method of re-opening after the flow of the double-strand slab continuous casting machine after changing the cross-secti...

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Abstract

The invention provides a double-strand slab continuous casting operation method, comprising the following steps: T1: a method for safely stopping the flow of the double-strand slab continuous casting machine during casting; T2: a method for closing and capping the slab continuous casting; T3: double-strand slab continuous casting The method of non-stop local overhaul of slab continuous casting machine; T4: the method for changing the section of double-strand slab continuous casting machine during pouring; T5: the method of opening flow again after the flow of double-strand slab continuous casting machine is stopped during pouring; The method for the double-strand slab continuous casting machine to safely stop the flow during pouring includes: Step A: the superheat of the tundish of the previous heat and the stopped heat should be above 30°C; In the middle and late stages of the ladle, when the liquid steel volume of the ladle is 30% left, the casting speed is gradually reduced at a level of 0.05m / min when the flow is ready to stop. The invention enables the tundish to be safely stopped when the liquid level is above 50%. Strand production can effectively reduce the downtime and maintenance time of the continuous casting machine and improve the operation rate.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to the field of continuous casting of slabs, in particular to an operation method of continuous casting of two-strand slabs. Background technique [0002] In the current conventional slab continuous casting process, once the production stream 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: the production is affected after the flow of the two-strand slab continuous casting machine stops during pouring. Contents of the invention [0004] The invention provides a double-strand slab continuous casting operation method to solve the problem that the production is affected after the flow of the double-strand slab continuous caster is stopped during pouring. [0005] For this reason, the present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/16B22D11/115B22D11/20B22D11/22B22D41/28
CPCB22D11/115B22D11/16B22D11/20B22D11/22B22D41/28
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
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