SU433815A1 - Method of heat treatment of steel articles - Google Patents

Method of heat treatment of steel articles

Info

Publication number
SU433815A1
SU433815A1 SU6801237075A SU1237075A SU433815A1 SU 433815 A1 SU433815 A1 SU 433815A1 SU 6801237075 A SU6801237075 A SU 6801237075A SU 1237075 A SU1237075 A SU 1237075A SU 433815 A1 SU433815 A1 SU 433815A1
Authority
SU
USSR - Soviet Union
Prior art keywords
heat treatment
heating
steel articles
subjected
hardening
Prior art date
Application number
SU6801237075A
Other languages
Russian (ru)
Inventor
И.Г. Хаит
Н.М. Мулин
Е.А. Гузеев
В.В. Вологдин
Г.Ф. Головин
Е.П. Евангулова
А.И. Жуков
Л.П. Стычинский
М.Г. Эрлих
Ю.З. Борковский
Original Assignee
Научно-исследовательский институт бетона и железобетона
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 Научно-исследовательский институт бетона и железобетона filed Critical Научно-исследовательский институт бетона и железобетона
Priority to SU6801237075A priority Critical patent/SU433815A1/en
Application granted granted Critical
Publication of SU433815A1 publication Critical patent/SU433815A1/en

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Heat Treatment Of Articles (AREA)

Description

1one

Изобретение относитс  к производству стальных изделий, подвергаемых термическому упрочнению.The invention relates to the production of steel products subjected to thermal hardening.

Известен способ термического упрочнени  стальных изделий, включающий закалку и отпуск с нагревом токани высокой частоты.The known method of thermal hardening of steel products, including quenching and tempering with heating to high frequency.

Однако при термическом упрочнении .арматурных стержней известным способом получают низкую коррозионную CTOflHowever, when thermally hardening. Rebar rods in a known manner, low corrosive CTOfl is obtained.

кость и предел выносливости, а также малую пластичность.bone and endurance limit, as well as low ductility.

Предлагаемый способ отличаетс  тем что после термического упрочнени  издели  подвергают дополнительному поверхностному нагреву, например, до 720-770 С.The proposed method is characterized in that after thermally hardening, the product is subjected to additional surface heating, for example, up to 720-770 C.

Этот способ позвол ет получить в сердцевине издели  структуру мдртенсита и тростита, а в поверхностном. слое структуру близкую к равновесной. Создание указанного сло  осуществл етс  не в процессе термического упрочнени , а выполн етс  после дополнительного скоростного поверхностного нагрева, например индукционного или электронно-лучевого. Само же термическое упрочнение может быть любым, закалка и отпуск с индукционного, печного , либо прокатного нагрева. This method allows to obtain in the core of the product the structure of medrensit and trostite, and in the surface one. layer structure is close to equilibrium. The creation of this layer is not carried out in the process of thermal hardening, but is performed after additional high-speed surface heating, for example, induction or electron beam. The thermal hardening itself can be any, hardening and tempering from induction, furnace, or rolling heating.

Нагреь поверхностного сло  до 720770С обеспечивает образование аустенита и получени  минимальное глубины проникновени  тока при индукционном нагреве.Heating the surface layer to 720770 ° C ensures the formation of austenite and obtaining the minimum penetration depth of the current during induction heating.

Требуемое сочетание механических свойств изделий получают изменением величины поверхностной зоны, подвергнутой высокому нагреву / 0,1 ф /.The required combination of mechanical properties of products is obtained by changing the size of the surface zone, subjected to high heat / 0.1 l /.

Повышение коррозионной стойкости и усталостной прочности объ сн етс  уменьшением вли ни  поверхностных концентратов напр жений, в большинстве случаев  вл ющихс  очагами разрушени  при нагружении.The increase in corrosion resistance and fatigue strength is attributed to a decrease in the effect of surface stress concentrates, which in most cases are centers of destruction during loading.

Так,арматурные стержни периодического профил  из стали 35ГС, изготовленные по предлагаемому способу, не склонны к коррозийному растрескиванию под напр жением, имеют более высокий предел выносливости и величину оста Гочных относительных равномерны : удлцнений по сравнению с изгстовлен ымс п известной технологии.Thus, the reinforcing bars of a periodic profile made of steel 35GS, manufactured by the proposed method, are not prone to stress corrosion cracking under stress, have a higher endurance limit and the magnitude of the residual ones are uniform: the extensions are compared with the manufacturing technology of the known technology.

Claims (2)

Формула изобретени  1. Способ термической обработки стальных изделий, например стержневой арматуры, включающий закалку и отпуск отличающийсртем, что, сClaim 1. A method of heat treatment of steel products, such as rod reinforcement, including quenching and tempering, characterized in that о433815о433815 а4a4 целью повышени  коррозионной стойкое- the purpose of increasing the corrosion resistant 2. Способ по п. 1,отлича юти , усталостной прочности и пластич-щ и и с   тем, что дополнительный поности , их подвергают дополнительномуверхностный нагрев производ т до 720поверхностному нагреву..2. The method according to claim 1, distinguished by yuty, fatigue strength, and plasticity, and with the fact that they are subjected to additional superheat heating to 720 surface heating by additional heat ..
SU6801237075A 1968-04-19 1968-04-19 Method of heat treatment of steel articles SU433815A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU6801237075A SU433815A1 (en) 1968-04-19 1968-04-19 Method of heat treatment of steel articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU6801237075A SU433815A1 (en) 1968-04-19 1968-04-19 Method of heat treatment of steel articles

Publications (1)

Publication Number Publication Date
SU433815A1 true SU433815A1 (en) 1977-11-25

Family

ID=20442375

Family Applications (1)

Application Number Title Priority Date Filing Date
SU6801237075A SU433815A1 (en) 1968-04-19 1968-04-19 Method of heat treatment of steel articles

Country Status (1)

Country Link
SU (1) SU433815A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2491355C1 (en) * 2012-03-05 2013-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" Method for thermal treatment of products, such as stems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2491355C1 (en) * 2012-03-05 2013-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" Method for thermal treatment of products, such as stems

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