TH68835B - steel making equipment, steel manufacturing methods and how the electricity is used in it - Google Patents

Abstract

DC60 (22/11/60) This invention relates to steelmaking equipment (1) and methods for producing steel. There is no interruption, or at least cyclical, in such equipment (1) where in the case of steel production. Uninterrupted at least the following first three steps And in the case of cyclical steel production All five steps are used - the feed material is melted uninterrupted or at least cyclically in the furnace. Electric arc type (10) - feed material, for example, in particular, shaded scrap (71) shed in shading (40) for shedding of discarded and / or unused iron. (Scrap) (70), Direct Iron (DRI) and / or Hot Brewet (HBI) iron uninterrupted, or at least continuously. During the cycle of the smelting process it is fed to the electric arc furnace (10) by the conveying path (50,51, ...) - part of the liquid steel is supplied uninterrupted or cyclically. From the tub Electric arc furnaces (10) - electrical energy from thermal energy incorporated in the hot process waste gas (upper part of the arc furnace) (20) of electric arc furnaces (10). Was produced without interruption? At least during the smelting cycle By power generation method (30,31, 32) - Shading system (40) assigned to electric arc furnaces (10) for steel shading. Discarded and / or unused iron (Scrap) (70) Uninterrupted power, or At least during the smelting cycle, the electric energy produced by the waste gas from the process (upper part of the furnace) (20), these machines (1) are in line with the trend of the past year. Which sets the standard New in terms of total energy balance with productivity and energy savings. ------ 22/11/2017 ------ (OCR) page 1 of number 1 page invention summary. The invention involved steel making equipment (1) and a method for producing steel. There is no interruption, or at least cyclical, in such equipment (1) where in the case of steel production. At least the following first three steps, and in the case of cyclical steel production All five steps are used - the feed material is melted uninterrupted, or at least cyclically in the furnace. Electric arc type (10) - feed material, for example, in particular, shaded scrap (71) shed in shading (40) for shedding of discarded and / or unused iron. (Scrap) (70), Direct Iron (DRI) and / or Hot Brewet (HBI) iron uninterrupted, or at least continuously. During the cycle of the smelting process it is fed to the electric arc furnace (10) by the conveying path (50, 51, ...) - part of the molten steel is supplied uninterrupted or cyclically. From the tub Electric arc furnaces (10) - electrical energy from thermal energy incorporated in the hot process waste gas (upper part of the arc furnace) (20) of electric arc furnaces (10). Was produced without interruption? At least during the smelting cycle By power generation method (30, 31, 32) - Shading system (40) assigned to electric arc furnaces (10) for shedding steel. Discarded and / or unused iron (Scrap) (70) Uninterrupted power, or At least during the smelting cycle, electric energy produced from the waste gas from the process (upper part of the furnace) (20) steelmaking equipment (1) is in line with last year's trend. Which sets the standard New in terms of total energy balance with productivity and energy savings ------------ This invention involves (1) steelmaking equipment and methods for uninterrupted or uninterrupted steelmaking. In the case of non-stop steel production, at least the following three first steps, and in the case of cyclical steelmaking, all five steps are used. - The feed material is melted uninterrupted, or at least cyclically in electric arc furnaces (10) - the feed material, for example, in particular the shaded scrap (71) shaded in the shading system. (40) For continuous shedding of discarded and / or unused iron (scrap) (70), direct-reducing iron (DRI) and / or hot-briquette (HBI) iron. Interrupted, or at least continuously during the melting cycle, is fed to the electric arc furnace (10) by the conveying path (50,51, ...) - part of the molten steel is supplied as Uninterrupted or cyclical from the steel bath of an electric arc furnace (10) - electrical energy from the thermal energy incorporated in the hot process waste gas (upper part of the furnace) (20) of the furnace. Electric arc smelting (10) is produced uninterrupted, or at least during the smelting cycle by the power generation method (30,31,32) - the shading system (40) assigned to Electric arc furnaces (10) for shedding of discarded and / or unused iron (scrap) (70) are supplied uninterrupted or low in power during the smelting cycle by Electric energy produced From process waste gas (upper part of the furnace) (20), these (1) steel-producing equipment is in line with recent year's trends that set new standards in terms of total energy balance with productivity and efficiency. Energy saving

Claims (1)

1.Steel wire for high strength springs with better workability. Available steel wire Softened martensite steel wire composed by mass C 0.53 to 0.68% Si: 1.2 to 2.5% Mn: 0.2 to 1.5% Cr: 1.4 to 2.5% Al: 0.05% or less, not including. At least one type of 0% selected from the group containing Ni: 0.4% or less, excluding 0%: V: 0.4% or less, excluding 0%; Mo: 0.05 to 0.5%; And Nb: 0.05 to 0.5% and: