EA202092198A2 - METHOD FOR PRODUCING ROLLED STEEL - Google Patents

METHOD FOR PRODUCING ROLLED STEEL

Info

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
Application number
EA202092198A
Other languages
Russian (ru)
Other versions
EA039568B1 (en
EA202092198A3 (en
Inventor
Владимир Николаевич УРЦЕВ
Антон Владимирович ШМАКОВ
Юрий Николаевич ГОРНОСТЫРЕВ
Михаил Львович ЛОБАНОВ
Илья Кимович РАЗУМОВ
Геннадий Васильевич САМОХВАЛОВ
Евгений Дмитриевич МОКШИН
Василий Николаевич ДЕГТЯРЕВ
Дим Маратович ХАБИБУЛИН
Сергей Владимирович ДАНИЛОВ
Никита Сергеевич СИДОРЕНКО
Николай Владимирович УРЦЕВ
Original Assignee
Антон Владимирович ШМАКОВ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Антон Владимирович ШМАКОВ filed Critical Антон Владимирович ШМАКОВ
Publication of EA202092198A2 publication Critical patent/EA202092198A2/en
Publication of EA202092198A3 publication Critical patent/EA202092198A3/en
Publication of EA039568B1 publication Critical patent/EA039568B1/en

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.

EA202092198A 2019-10-25 2020-10-15 Method for producing a rolled steel product EA039568B1 (en)

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

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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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
WO2018116192A1 (en) * 2016-12-20 2018-06-28 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

Also Published As

Publication number Publication date
EA039568B1 (en) 2022-02-11
EA202092198A3 (en) 2021-06-30
WO2021080470A1 (en) 2021-04-29
RU2729801C1 (en) 2020-08-12

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