Method for producing electrotinning substrate steel by using steel ladle casting residual molten steel

A technology of electroplating tin and molten steel, which is applied in the direction of improving process efficiency and manufacturing converters, and can solve problems such as high production costs and slag inclusion defects, and achieve short production cycles, strong castability of continuous casting, and reduced degradation rate Effect

Pending Publication Date: 2022-03-08
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing electro-tinned substrate steel by ladle casting surplus steel, which mainly solves the technical problems of slag inclusion defect and high production cost in the existing electro-tinned substrate steel

Method used

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  • Method for producing electrotinning substrate steel by using steel ladle casting residual molten steel
  • Method for producing electrotinning substrate steel by using steel ladle casting residual molten steel
  • Method for producing electrotinning substrate steel by using steel ladle casting residual molten steel

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Embodiment Construction

[0024] Below in conjunction with specific embodiment 1-8, further illustrate the present invention.

[0025] In the embodiment of the present invention, a 150-ton top-bottom combined blowing converter is used to smelt the grade as MR-2 tinplate electroplated tin plate, and the bottom blowing gas in the converter smelting process is argon. The production method includes: converter smelting, molten steel treatment at an argon blowing station, and continuous casting of molten steel by a continuous casting machine. The control parameters of molten steel production in the embodiment of the present invention are shown in Table 1 to Table 6.

[0026] Table 1 Parameters of converter smelting metal material in the embodiment of the present invention

[0027]

[0028] Table 2 Composition and temperature of molten steel at the end point of converter smelting

[0029]

[0030] Table 3 Consumption parameters of alloys and auxiliary materials in converter tapping process

[0031] ...

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Abstract

The invention discloses a method for producing electrotinning substrate steel by using steel ladle casting residual molten steel, and mainly solves the technical problems of slag inclusion defect and high production cost of the existing electrotinning substrate steel. According to the technical scheme, the method for producing the electrotinning substrate steel through the steel ladle casting residual molten steel comprises the following steps that (1) converter top and bottom composite smelting is adopted, and the fed metal main materials comprise, by weight, 78%-92% of molten iron and the balance light scrap steel; (2) transporting molten steel in the steel ladle to an argon blowing station, and carrying out temperature regulation and secondary deoxidation on the molten steel; (3) argon blowing treatment is conducted on the molten steel again, 5-10 tons of steel ladle casting residual molten steel of the same steel type is added into the molten steel, obtained after weak stirring treatment, in the steel ladle, argon is introduced into the molten steel in the steel ladle, and the molten steel is strongly stirred for 3.0-5.0 minutes; and 4) continuously casting the molten steel to obtain a continuous casting slab. The method is short in production period, and the produced molten steel is low in cost.

Description

technical field [0001] The invention relates to a method for producing molten steel, in particular to a method for producing electro-tinned substrate steel by using molten steel left over from ladle casting, and belongs to the technical field of steelmaking and continuous casting. Background technique [0002] The application field of electroplated tin plate is mainly used for packaging materials, and it is also used in the fields of electronics and auto parts. In addition to food packaging materials, tinned steel plates are also widely used in various bottle caps, can lids, barrel lids, chemical cans, beverage cans, and decorative cans. [0003] The difficulty in production control of tin-plated substrate steel is specifically reflected in the high purity requirements for steel in the steelmaking process; due to the thin thickness of the finished steel plate of the electro-tin-plated substrate, the aluminum content of the electro-tin-plated substrate is high, and it is cast...

Claims

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Application Information

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IPC IPC(8): C21C5/35C21C7/06C21C7/072C22C38/00C22C38/02C22C38/04C22C38/06
CPCC21C5/35C21C7/06C21C7/072C22C38/02C22C38/04C22C38/06C22C38/001Y02P10/20
Inventor 朱坤唐洪乐孙玉军王彬
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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