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Continuous casting special-shaped blank head temperature simulation method

A simulation method and technology of special-shaped slabs, which are applied in the field of metallurgy, can solve problems such as the lack of a better simulation method for the temperature of the billet head of continuous casting billets, and achieve the effects of simplifying calculations and avoiding crossover

Active Publication Date: 2020-05-26
CONTINUOUS CASTING TECH ENG OF CHINA
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  • Description
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Problems solved by technology

Therefore, up to now, there is no better simulation method for billet head temperature

Method used

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  • Continuous casting special-shaped blank head temperature simulation method
  • Continuous casting special-shaped blank head temperature simulation method
  • Continuous casting special-shaped blank head temperature simulation method

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Embodiment Construction

[0038] Embodiments of the method for simulating the head temperature of the continuous casting special-shaped billet according to the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.

[0039] The billet head temperature simulation method of the present invention is suitable for continuous casting billets such as special-shaped billets, slabs, square billets, and round billets. The temperature simulation process will be described below with special-shaped billets as an example. The billet can also use the following steps to ...

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Abstract

The invention discloses a continuous casting special-shaped blank head temperature simulation method which comprises the following steps: taking a water-cooled copper crystallizer, an internal chill,a casting blank, a dummy bar head, crystallizer cooling water, air and the like as a system, establishing a heat transfer model between the systems, and considering the influence of a cold crystallizer and the internal chill on the temperature of a blank head at the initial stage of casting. The continuous casting process is simulated in the following three stages: a seedling emergence stage of starting to inject molten steel into a crystallizer to a meniscus position, a starting stage of starting a casting machine to carry out continuous casting, and a stage of moving a casting blank head outof the casting machine when the length of the casting blank reaches a set value. Aiming at the problem of multi-material heat transfer, a discrete heat transfer equation is established by using a finite volume method. The invention provides a method for calibrating the secondary cooling heat transfer coefficient in the initial stage of continuous casting, that is, the temperatures of three pointson the cross section of a casting blank are actually measured and compared with theoretical calculation values, and the secondary cooling heat transfer coefficient is finally obtained through correction iteration. Through on-site temperature measurement and theoretical calculation, blank head temperature distribution is given, and a basis is provided for formulating a continuous casting process.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for simulating the temperature of a billet head of a continuous casting special-shaped billet. Background technique [0002] The continuous casting of special-shaped billet is a near-final steel production technology, and special-shaped billet refers to the continuous casting billet that is close to the shape and size of the final product of H-beam. Rolled products produced from special-shaped blanks are widely used in construction, bridges and other fields. China Metallurgical South Continuous Casting Co., Ltd. designed the largest cross-section (1200×500×90mm) special-shaped slab continuous casting machine for a steel factory. The factory uses the slab of this cross-section to roll cloud rails for urban rail construction. Good prospects for economic and social benefits. In May 2019, the steel plant trial-produced this special-shaped billet. Before that, there was ...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/17B22D11/22G06F111/10G06F119/08
CPCB22D11/225
Inventor 刘伟涛韩占光谢长川
Owner CONTINUOUS CASTING TECH ENG OF CHINA
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