Method of producing bainitic rail from steel casting at continuous casting machine
	KOSHKAROV D A; SMIRNOV L A; DOBUZHSKAIA A B; GALITSYN G A; BELOKUROVA E V; PUZYREV S S; KIRICHKOV A A; SHVEDOV K N; SKOROKHODOV A A; SOKOLOV K E; RUBTSOV V YU; GAEV D V; TRUBIN E A; ULEGIN K A; ROSHCHUPKIN S A
	2023-12-21
专利权人	EVRAZ NIZHNII TAGIL METALLURGICAL PLANT (EVRA-Non-standard)
申请日期	2023-12-21
专利号	RU2825330-C1
成果简介	NOVELTY - Invention relates to production of bainitic rails. Method includes production of steel containing wt.%: carbon 0.30–0.40, manganese 1.20–1.70, silicon 0.80–1.50, aluminum <0.004, phosphorus <0.020, sulfur <0.020, chromium 1.20–1.50, nickel 1.00–2.50, vanadium 0.10–0.30, nitrogen 0.01–0.02, hydrogen <2 ppm, iron—the rest, steel casting at continuous casting machine, thereafter, the steel billet is heated, rolled to produce a rail, and the rail is cooled in still air from rolling end temperature to room temperature. After cooling the steel rail in still air, low-temperature tempering is performed, including reheating of the steel rail to temperature of 180–350 °C, holding at preset temperature for at least 60 minutes and subsequent cooling in still air with provision of additional decay of residual austenite and formation of new bainite sections. USE - Metallurgy. ADVANTAGE - Obtaining rails having the required combination of high strength and hardness, as well as plasticity and impact strength at low temperatures. 1 cl, 10 dwg, 3 tbl, 1 ex
IPC 分类号	C21D-008/00 ; C21D-009/04 ; C22C-038/46 ; C22C-038/58
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/18809
专题	中国科学院新疆生态与地理研究所
作者单位	EVRAZ NIZHNII TAGIL METALLURGICAL PLANT (EVRA-Non-standard)
推荐引用方式 GB/T 7714	KOSHKAROV D A,SMIRNOV L A,DOBUZHSKAIA A B,et al. Method of producing bainitic rail from steel casting at continuous casting machine. RU2825330-C1[P]. 2023.

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