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Steelmaking process for large-scale customized production

A technology of technology and production planning, applied in the direction of steel manufacturing technology, sustainable manufacturing/processing, metal processing, etc., can solve the problems of restricting product diversification of enterprises, difficult production scheduling, and difficult to realize customized production, so as to achieve flexible production Scheduling, the effect of shortening the lead time

Active Publication Date: 2016-08-03
CISDI ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the existing production mode of iron and steel enterprises is to integrate small orders from different users as much as possible, and then issue production plans from pouring to heat. The smallest production unit can only be heat. The product target of the tank molten steel is determined at the beginning of converter steelmaking. After LF refining and RH refining, it finally enters the continuous casting machine (as attached figure 1 As shown), its process flow is complicated, production scheduling is difficult, and it is difficult to realize customized production, which limits the diversification of enterprise products

Method used

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  • Steelmaking process for large-scale customized production
  • Steelmaking process for large-scale customized production

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Embodiment 1

[0019] Such as figure 2 As shown, the present invention is a large-scale custom-made steelmaking process, which uses equipment including two sets of molten iron pretreatment devices, three sets of primary smelting furnaces as converters, one set of intermediate furnaces, and three sets of refining furnaces as RH furnaces. The molten steel is supplied to three sets of continuous casting machines. The steelmaking process of the present invention is characterized in that: the molten steel is transferred from the three primary furnaces to the intermediate furnace for thermal insulation storage and uniform composition according to the basically consistent composition and temperature, and then loaded according to the customized demand. into three refining furnaces, and then into three different continuous casting machines for casting after adjusting the composition.

[0020] The specific process flow is as follows: after two sets of molten iron pretreatment devices successively rec...

Embodiment 2

[0023] A steel group owns carbon structural steel hot-rolled thick steel plate, low-alloy structural steel hot-rolled thick steel plate, ship hull structural steel plate, pressure vessel steel plate, boiler steel plate, bridge structural steel plate, building structure steel plate, low carbon steel hot Rolled round wire rods, high-quality carbon steel hot-rolled wire rods, steel strands for prestressed concrete, seamless steel pipes for high-pressure boilers, etc. have more than 800 varieties and more than 3,000 specifications of products. 4.5 million tons of qualified slabs, with 2 KR desulfurization stations, 2 210t converters, 2 online CAS stations, 2 double-station LF furnaces, 1 double-station RH, 1 double-station VD, 2-stream slabs 3 continuous casting machines. The transformation of steelmaking equipment is as follows: stop using the online CAS station, dismantle one LF furnace, and build a new 600t intermediate furnace at the original site. The steelmaking process is ...

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Abstract

The invention discloses a steelmaking process for large-scale customized production, and belongs to the technical field of metallurgical production. The steelmaking process comprises the following steps: desulfurizing molten iron through a molten iron pretreatment device, and transferringthe molten iron into a primary melting furnace to complete desiliconizing, dephosphorizing and decarbonizing; transferring the molten iron into an intermediate furnace to store in a thermal-insulation manner and homogenize the components according to the almost consistent components and temperature; and transferring the molten iron into a refining furnace to regulate components according to customized quantity demanded, and then introducing the molten iron into a continuous casting machine. According to the steelmaking process, the intermediate furnace is arranged as buffer, so that the influences of any converter accident on the casting machine can be isolated, and multi-steel-ladle continuous taping and continuous casting is not affected by the converter production rhythm. When the steelmaking process is applied to steelmaking production, large-scale customized production can be realized, the small-amount order delivery period can be shortened, wider customer requirements can be met, and the production scheduling function is flexible.

Description

technical field [0001] The invention belongs to the technical field of metallurgical production and relates to a steelmaking process for large-scale customized production. Background technique [0002] Mass customization is a modern production and management model that organically combines large-scale batch production with small-scale production, and it has a high degree of process agility, flexibility and integration. Customized production is a transformation from the traditional "production-centered" to "consumer-centered". It can not only meet the individual needs of consumers, but also avoid excessive inventory accumulation in the market, resulting in price cuts, etc. vicious circle. [0003] However, the existing production mode of iron and steel enterprises is to integrate small orders from different users as much as possible, and then issue production plans from pouring to heat. The smallest production unit can only be heat. The product target of the tank molten ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/02C21C7/06C21C7/064C21C7/068
CPCC21C1/02C21C7/06C21C7/064C21C7/068C21C2300/08
Inventor 刘向东王勇吴令艾磊何腊梅王翔
Owner CISDI ENG CO LTD
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