EA202092198A2 - METHOD FOR PRODUCING ROLLED STEEL - Google Patents
METHOD FOR PRODUCING ROLLED STEELInfo
- Publication number
- EA202092198A2 EA202092198A2 EA202092198A EA202092198A EA202092198A2 EA 202092198 A2 EA202092198 A2 EA 202092198A2 EA 202092198 A EA202092198 A EA 202092198A EA 202092198 A EA202092198 A EA 202092198A EA 202092198 A2 EA202092198 A2 EA 202092198A2
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- rolled
- decomposition
- austenite
- heat
- layers
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Control Of Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Изобретение относится к области металлургии, в частности к технологии производства проката из стали. Для определения структурного состояния прокатанного металла по технологическим параметрам прокатки выплавляют сталь требуемого химического состава, осуществляют ее прокатку с фиксацией технологических параметров и определяют структурное состояние полученного проката в зависимости от реализованных технологических параметров. При этом расчетно определяют массовые доли продуктов распада аустенита в слоях, исходя из измеренной температуры поверхности проката до начала охлаждения, его толщины и реализованного режима отвода тепла с поверхности проката, используя метод конечных разностей для решения задачи теплопроводности для среды с внутренними источниками тепловыделений с виртуальным разбиением толщины проката на слои, при этом за источники тепловыделений принимаются слои проката, в которых согласно расчету происходят процессы распада аустенита по хотя бы одному из типов: ферритному (Ф), феррито-перлитному (Ф+П), перлитному (П), бейнитному (Б), мартенситному (М), тип распада определяют, исходя из температуры слоя и/или скорости охлаждения, и/или удельной мощности отвода тепла от слоя, прирост массовой доли продуктов распада аустенита (dM/d) определяют исходя из температуры и/или скорости охлаждения, и/или удельной мощности отвода тепла от слоя, величину тепловыделения рассчитывают по уравнению dQ=dMQpi, где dQ - теплота, выделившаяся в результате распада аустенита по какому-либо типу, кДж, Qpi - удельный тепловой эффект распада аустенита по i-му типу, кДж/кг.The invention relates to the field of metallurgy, in particular to a technology for the production of rolled steel. To determine the structural state of the rolled metal according to the technological parameters of rolling, steel of the required chemical composition is smelted, it is rolled with the fixation of the technological parameters, and the structural state of the obtained rolled stock is determined depending on the implemented technological parameters. At the same time, the mass fractions of austenite decomposition products in the layers are calculated based on the measured temperature of the rolled surface before the start of cooling, its thickness and the implemented mode of heat removal from the rolled surface, using the finite difference method to solve the problem of thermal conductivity for a medium with internal sources of heat release with virtual partitioning thickness of rolled products into layers, while the sources of heat are taken to be rolled layers, in which, according to the calculation, austenite decomposition processes occur in at least one of the types: ferritic (F), ferrite-pearlite (F + P), pearlite (P), bainite ( B), martensitic (M), the type of decomposition is determined based on the temperature of the layer and / or the rate of cooling, and / or the specific power of heat removal from the layer, the increase in the mass fraction of the decomposition products of austenite (dM / d) is determined based on the temperature and / or cooling rate, and / or specific power of heat removal from the layer, the amount of heat release is calculated by the equation dQ = dMQpi, where d Q is the heat released as a result of the decomposition of austenite by any type, kJ, Qpi is the specific heat effect of decomposition of austenite by the i-th type, kJ / kg.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2019134178A RU2729801C1 (en) | 2019-10-25 | 2019-10-25 | Method of producing rolled steel |
Publications (3)
Publication Number | Publication Date |
---|---|
EA202092198A2 true EA202092198A2 (en) | 2021-04-30 |
EA202092198A3 EA202092198A3 (en) | 2021-06-30 |
EA039568B1 EA039568B1 (en) | 2022-02-11 |
Family
ID=72086175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EA202092198A EA039568B1 (en) | 2019-10-25 | 2020-10-15 | Method for producing a rolled steel product |
Country Status (3)
Country | Link |
---|---|
EA (1) | EA039568B1 (en) |
RU (1) | RU2729801C1 (en) |
WO (1) | WO2021080470A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2762195C1 (en) * | 2021-03-15 | 2021-12-16 | Публичное Акционерное Общество "Новолипецкий металлургический комбинат" | Method for producing isotropic electrical steel |
CN113857247B (en) * | 2021-10-19 | 2023-11-21 | 攀钢集团攀枝花钢钒有限公司 | Production method of hot continuous rolling titanium alloy plate |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT408623B (en) * | 1996-10-30 | 2002-01-25 | Voest Alpine Ind Anlagen | METHOD FOR MONITORING AND CONTROLLING THE QUALITY OF ROLLING PRODUCTS FROM HOT ROLLING PROCESSES |
RU2413777C1 (en) * | 2009-11-27 | 2011-03-10 | ООО "Исследовательско-технологический центр "Аусферр" | Procedure for thermal treatment of items out of steel and alloys |
RU2563911C2 (en) * | 2014-01-09 | 2015-09-27 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Production of coiled stock at continuous wide-strip mill |
DE102014224461A1 (en) * | 2014-01-22 | 2015-07-23 | Sms Siemag Ag | Process for the optimized production of metallic steel and iron alloys in hot rolling and heavy plate mills by means of a microstructure simulator, monitor and / or model |
RU2655398C2 (en) * | 2016-08-26 | 2018-05-28 | Антон Владимирович Шмаков | Method of rolled products production |
EP3559285B1 (en) * | 2016-12-20 | 2021-09-22 | ArcelorMittal | A method of dynamical adjustment for manufacturing a thermally treated steel sheet |
RU2655458C1 (en) * | 2017-06-02 | 2018-05-28 | Антон Владимирович Шмаков | Method for determining a specific thermal effect of phase transformation |
-
2019
- 2019-10-25 RU RU2019134178A patent/RU2729801C1/en active
-
2020
- 2020-10-15 EA EA202092198A patent/EA039568B1/en unknown
- 2020-10-23 WO PCT/RU2020/050291 patent/WO2021080470A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EA202092198A3 (en) | 2021-06-30 |
WO2021080470A1 (en) | 2021-04-29 |
RU2729801C1 (en) | 2020-08-12 |
EA039568B1 (en) | 2022-02-11 |
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