Production of isotropic electrical steel strips involves steel smelting, casting, heating slabs, hot-rolling, preparing and annealing hot-rolled strips, pickling, cold-rolling, annealing, and cooling annealed strips at rate determined depending on non-flatness of strips
	BOZHKOV A I; DEGTEV S S; IVLIEV S N; KOVALEV D A; CHERNOMYRDIN V I; VLADIMIROV A D
	2023-04-26
专利权人	UNIV LIPETSK TECH (UYLI-Non-standard)
申请日期	2023-04-26
专利号	RU2023110896-A
成果简介	NOVELTY - A method for producing isotropic electrical steel strips with improved flatness involves steel smelting, with or without secondary processing, steel casting, low-temperature heating of slabs before hot-rolling, hot-rolling, preparing and annealing hot-rolled strips or without it, pickling, cold-rolling, combined decarburization-recrystallization annealing or recrystallization annealing and cooling the annealed strips. The cooling is performed at a rate determined depending on the non-flatness of the strips at the outlet of a continuous annealing unit according to preset formula (1). USE - Method for producing isotropic electrical steel strips with improved flatness. DETAILED DESCRIPTION - A method for producing isotropic electrical steel strips with improved flatness involves steel smelting, with or without secondary processing, steel casting, low-temperature heating of slabs before hot-rolling, hot-rolling, preparing and annealing hot-rolled strips or without it, pickling, cold-rolling, combined decarburization-recrystallization annealing or recrystallization annealing and cooling the annealed strips. The cooling is performed at a rate determined depending on the non-flatness of the strips at the outlet of a continuous annealing unit according to a formula of: Vcool(i+1)= a0.Vi+a1.(δ )Ai(1), where Vcoolis the current cooling rate of the strip, ° C/second and V is the speed of strip transportation along the unit line, m/second, (Δ )A = Aizm-Azad, where Aizmand Azadare the specified and measured or predicted deviation of the strip surface from the plane, mm, a0is coefficient depending on the cooling intensity, ° C/m, a0 = (Δ )T/L, (Δ )T = T0-T1, T0and T1are measured or predicted strip temperature at the entrance and exit of the cooling zone, ° C, L is length of the cooling zone, m, a1 is coefficient determined by calculations and (or) experimentally and depending on the strip dimensions, ° C/(c.M), a1= 0.82+0.55.10-4(B/h), B and h are width and thickness of the strip, mm, i is number of the processed batch of metal, and i = 1, I-1, I are number of metal batches in the processed type of product.
IPC 分类号	B21B-037/44 ; C21D-008/12
国家	俄罗斯
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/21973
专题	中国科学院新疆生态与地理研究所
作者单位	UNIV LIPETSK TECH (UYLI-Non-standard)
推荐引用方式 GB/T 7714	BOZHKOV A I,DEGTEV S S,IVLIEV S N,et al. Production of isotropic electrical steel strips involves steel smelting, casting, heating slabs, hot-rolling, preparing and annealing hot-rolled strips, pickling, cold-rolling, annealing, and cooling annealed strips at rate determined depending on non-flatness of strips. RU2023110896-A[P]. 2023.

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