SU433815A1 - Method of heat treatment of steel articles - Google Patents
Method of heat treatment of steel articlesInfo
- 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
Links
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)
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)
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 |
-
1968
- 1968-04-19 SU SU6801237075A patent/SU433815A1/en active
Cited By (1)
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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