Slab cast-rolling system and method for improving production efficiency of cast-rolling interface

A production efficiency and slab technology, applied in the direction of metal rolling, metal rolling, workpiece surface treatment equipment, etc., can solve the problems of low continuous rate, low production efficiency, large heat loss of slabs, etc., to improve direct loading rate and hot charging rate, improve efficiency, and improve production efficiency

Active Publication Date: 2022-04-29
CENT IRON & STEEL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above analysis, the present invention aims to provide a slab casting and rolling system and a method for improving the production efficiency of the casting and rolling interface, in order to solve the problem of casting in the prior art Problems of low production efficiency at the rolling interface, low continuous rate, and large heat loss of the slab

Method used

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  • Slab cast-rolling system and method for improving production efficiency of cast-rolling interface
  • Slab cast-rolling system and method for improving production efficiency of cast-rolling interface

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Embodiment 1

[0089] Such as figure 1 As shown, the present embodiment provides a slab casting and rolling system, and the slab casting and rolling system includes a first continuous casting machine 1-1, a second continuous casting machine 1-2, a first conveying roller table 10-1, and a second conveying roller table 10-1. Roller table 10-2, first heating furnace 9-1, second heating furnace 9-2 and third heating furnace 9-3; first conveying roller table 10-1 and first heating furnace 9-1 and second heating furnace The furnaces 9-2 are connected respectively; the second conveying roller table 10-2 is connected with the third heating furnace 9-3; the first continuous casting machine 1-1 only produces hot-charged slabs, and the second continuous casting machine 1-2 alternately produces Hot-charged slab and cold-charged slab; the first conveying roller table 10-1 can send the hot-charged slab into the first heating furnace 9-1 or the second heating furnace 9-2, and the second conveying roller ta...

Embodiment 2

[0097] This embodiment provides a method for improving the production efficiency of the casting-rolling interface by using the slab casting-rolling system of Embodiment 1. details as follows:

[0098] The first continuous casting machine 1-1 produces SPHC steel grade, and its chemical composition is shown in Table 1 below. The size is 200mm×1500mm×95000mm.

[0099] Table 1 The main chemical composition of SPHC (wt%)

[0100] C Si mn P S Alt margin 0.15 0.05 0.6 0.035 0.015 0.015 Fe and other unavoidable impurities

[0101] Scenario 1: When the first continuous casting machine 1-1 and the second continuous casting machine 1-2 are producing SPHC steel at the same time, the casting speed of the first continuous casting machine 1-1 is 1.0m / min. The prediction model of the billet heating and holding time in the furnace determines that the heating time of the hot-charged slab in the furnace is 90 minutes. Taking into account other uncertain facto...

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Abstract

The invention discloses a slab cast-rolling system and a method for improving the production efficiency of a cast-rolling interface, belongs to the technical field of production processes of hot-rolled plate coils, and solves the problems of low production efficiency of the cast-rolling interface, low continuous rate and large heat loss of slabs in the prior art. The system comprises a first continuous casting machine, a second continuous casting machine, a first conveying roller way, a second conveying roller way, a first heating furnace, a second heating furnace and a third heating furnace, wherein the first continuous casting machine is only used for producing hot charging slabs; the second continuous casting machine is used for producing hot charging slabs and / or cold charging slabs; the first conveying roller way is respectively connected with the first heating furnace and the second heating furnace; the second conveying roller way is connected with the third heating furnace; the first conveying roller way can feed a hot charging plate blank into the first heating furnace or the second heating furnace, and the second conveying roller way can feed a cold charging plate blank into the third heating furnace; the hearth length of the first heating furnace and the second heating furnace is smaller than that of the third heating furnace. By adopting the system and the method, the production efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of production technology of hot-rolled coils, and in particular relates to a slab casting-rolling system and a method for improving the production efficiency of the casting-rolling interface. Background technique [0002] In the casting-rolling interface of slab hot-rolling production (the casting-rolling interface is the connection between continuous casting and hot rolling), the slab warehouse is an important buffer link connecting the two processes of steelmaking and hot rolling, and the rhythm and sequence of billet feeding directly affect to the production efficiency of the hot rolling line. During the on-site production process, the slabs in the slab warehouse are loaded sequentially according to the rolling plan, and the rolling plan and continuous casting plan sometimes change greatly, and there are various varieties. Therefore, the slabs produced by continuous casting need to be The line is re-queu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/00B21B45/02B21B38/00
CPCB21B45/004B21B45/0209B21B38/006
Inventor 张宏亮冯光宏王卫卫肖金福白宇王宝山马健
Owner CENT IRON & STEEL RES INST
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