Title:
SECONDARY COOLING CONTROL METHOD FOR CONTINUOUS CASTING MACHINE AND SECONDARY COOLING CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/009514
Kind Code:
A1
Abstract:
The main purpose of the present invention is to provide a secondary cooling control method for a continuous casting machine such that it is possible to improve the accuracy of controlling the overall surface temperature of a cast slab to a predetermined target temperature. The present invention has a cast slab surface temperature measurement process, a casting speed ascertainment process, a tracking surface setting process, a cast slab target temperature setting process, a temperature/solid-phase rate estimation process, a heat transfer coefficient estimation process, a heat transfer/solidification model parameter correction process, a future prediction surface setting process, a future prediction process, a future temperature influence coefficient prediction process, a cast slab surface reference temperature calculation process, an optimization problem coefficient matrix calculation process, an optimization problem solution process, and a cooling water amount changing process. By repeated changing of the amount of cooling water in each cooling zone in the cooling water amount changing process, the surface temperature of a future prediction surface of the cast slab at a future prediction surface position is controlled to a target surface temperature for the cast slab set in the cast slab target temperature setting process, while each tracking surface is being moved to the exit of a cooling zone subjected to secondary cooling control at an arbitrary time during the casting.
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Inventors:
KITADA HIROSHI (JP)
Application Number:
PCT/JP2014/068956
Publication Date:
January 21, 2016
Filing Date:
July 16, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B22D11/22; B22D11/16
Foreign References:
| JP2014014854A | 2014-01-30 |
Attorney, Agent or Firm:
YAMAMOTO, Noriaki et al. (JP)
Yamamoto 典輝 (JP)
Yamamoto 典輝 (JP)
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