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Pickled plate and production method thereof
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A production method and technology for pickling plates, applied in the direction of manufacturing converters, etc., can solve the problems of low strength, poor quality of pickling plates, and high production costs, and achieve high tensile strength, less difficulty in process control, and low production costs. Effect
Pending Publication Date: 2022-07-15
湖南华菱涟源钢铁有限公司 +1
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[0004] The application provides a pickling board and its production method, aiming to solve the problems of poor quality, low strength and high production cost of the pickling board
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Embodiment 1
[0061] The present embodiment provides the production method of pickling plate, which is as follows:
[0062] (1) The target components of the pickling plate are: C: 0.05%, Si: 0.06%, Mn: 0.45%, P: 0.015%, S: 0.004%, Ti: 0.045% and the balance of Fe and inevitable impurities ;
[0063] (2) Using 100t converter smelting, adding molten iron and scrap steel into the converter, the amount of molten iron added is 80 tons / furnace, the amount of scrap steel added is 35 tons / furnace, the total charging amount is 115 tons / furnace, and the scrap ratio is 30% , the degree of scrap steel added is 3 , the carbon content at the end point of the converter smelting process is 0.035%, and the end point temperature is 1620±10℃;
[0064] (3) After the tapping is completed, aluminum blocks are added for deoxidation, and the addition amount is 1.3kg / t steel. The manganesealloy is selected from low-carbon ferromanganese and silicon manganese (the N content is 120±30ppm and 40±15ppm respectively),...
Embodiment 2
[0068] The present embodiment provides the production method of pickling plate, which is as follows:
[0069] (1) The target components of the pickling plate are: C: 0.05%, Si: 0.06%, Mn: 0.55%, P: 0.015%, S: 0.004%, Ti: 0.05%, Nb: 0.013% and the remainder Fe and inevitable impurities;
[0070] (2) Using 100t converter smelting, adding molten iron and scrap steel into the converter, the amount of molten iron added is 80 tons / furnace, the amount of scrap steel added is 35 tons / furnace, the total charging amount is 115 tons / furnace, and the scrap ratio is 30% , the degree of scrap steel added is 3 , the carbon content at the end point of the converter smelting process is 0.035%, and the end point temperature is 1620±10℃;
[0071] (3) After the tapping is completed, aluminum blocks are added for deoxidation, and the addition amount is 1.3kg / t steel. The manganese alloy is selected from low-carbon ferromanganese and silicon manganese (the N content is 120±30ppm and 40±15ppm respe...
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Abstract
The invention discloses a pickling plate and a production method thereof. The production method of the pickled plate comprises the steps that molten iron and scrap steel are added into a converter for converter smelting, and molten steel is obtained; after the molten steel is tapped from a converter and transferred into a ladle refining furnace, aluminum blocks, siliconmanganese and low-carbon ferromanganese are added into the molten steel for deoxidation and alloying, and deoxidized alloyed molten steel is obtained; in the early slagging stage of a ladle refining furnace, ladlecasting residues are added into the deoxidized alloyed molten steel, and then high-carbon ferromanganese and ferrotitaniumalloy are added to obtain refined molten steel; and the refined molten steel is subjected to continuous casting, hot rolling, cooling, coiling and acid pickling, and the acid pickling plate is obtained. The pickling plate production method is low in process control difficulty, high in operability and simple, and the prepared pickling plate is good in quality, high in tensile strength and low in production cost.
Description
technical field [0001] The application belongs to the technical field of pickling board manufacturing, and in particular relates to a pickling board and a production method thereof. Background technique [0002] Pickling sheet is an intermediate product with high-quality hot-rolled sheet as raw material, after removal of oxide layer, trimming and finishing by pickling unit, the quality and use requirements are between hot-rolled sheet and cold-rolled sheet. It is a part of hot-rolled sheet Ideal alternative to plate and cold-rolled sheet, widely used in vehicles, machinery, construction and other fields. [0003] However, the carbon-manganese-niobium-titanium components are currently used by steel mills at home and abroad for the synthesis of pickled plates. On the one hand, the cost is too high, resulting in poor market competitiveness, which seriously affects the performance of steel mills; The influence of composition and production process leads to a large tendency of c...
Claims
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Application Information
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