UA101440C2 - method for ring bearings hardening and roller bearing - Google Patents

method for ring bearings hardening and roller bearing

Info

Publication number
UA101440C2
UA101440C2 UAA201113229A UAA201113229A UA101440C2 UA 101440 C2 UA101440 C2 UA 101440C2 UA A201113229 A UAA201113229 A UA A201113229A UA A201113229 A UAA201113229 A UA A201113229A UA 101440 C2 UA101440 C2 UA 101440C2
Authority
UA
Ukraine
Prior art keywords
hardening
ring
followed
temperature
steel
Prior art date
Application number
UAA201113229A
Other languages
Russian (ru)
Ukrainian (uk)
Inventor
Анатолий Моисеевич Гиршфельд
Эдуард Альфредович Симсон
Иван Дмитриевич Прево
Юрий Васильевич Проценко
Original Assignee
Частное Акционерное Общество "У.П.Э.К."
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 Частное Акционерное Общество "У.П.Э.К." filed Critical Частное Акционерное Общество "У.П.Э.К."
Priority to UAA201113229A priority Critical patent/UA101440C2/en
Priority to RU2011150610/02A priority patent/RU2493269C2/en
Publication of UA101440C2 publication Critical patent/UA101440C2/en

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

Abstract

The invention relates to the field of mechanical engineering, in particular to a method for ring bearings hardening, which ring bearings are operated in rail transport (axle, motor axle, and geared wagon and locomotive ring bearings) – in particular, the rolling bearings. The hardening process of a steel rolling bearing comprises preliminary hardening of ring material, followed by induction heating at least part of the ring material and their cooling. Bulk hardening is carried out as a pre-hardening for steel having the following composition: C 0.95-1.05 wt. %, Si 0,15-0,3 wt. %, Mn 0,15-0,3 wt. %, Cr 0,35-0,5 wt. %, Ni, Cu not more than 0.3 wt. %, P, S not more than 0.3 wt. %, the rest is Fe. The bulk hardening is carried out by heating the steel to a temperature of 830- and a total maintaining time of at least 1 hour, followed with cooling, and induction hardening is carried out by heating the surface layer of the ring high-frequency current with a total heating time of 15-50 seconds to the temperature of 820 -1050 ° C followed with cooling for 4-10 seconds to the temperature below the temperature of the beginning of martensitic transformation, followed by aftercooling for 30-60 seconds to the ambient temperature. The steel roller bearing comprises inner and outer rings with race-receiving grooves and the rolling elements disposed between them, at that the race-receiving groove of at least one of the rings has a surface layer having a martensitic structure, while the core of the ring has troostite structure. The present invention provides increased surface hardness of the rings with the thickness less than up to 61-64 HRC, and the hardness of the main body of the ring is maintained at 32-44 HRC.
UAA201113229A 2011-11-09 2011-11-09 method for ring bearings hardening and roller bearing UA101440C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
UAA201113229A UA101440C2 (en) 2011-11-09 2011-11-09 method for ring bearings hardening and roller bearing
RU2011150610/02A RU2493269C2 (en) 2011-11-09 2011-12-13 Hardening method of rolling bearing rings, and rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
UAA201113229A UA101440C2 (en) 2011-11-09 2011-11-09 method for ring bearings hardening and roller bearing

Publications (1)

Publication Number Publication Date
UA101440C2 true UA101440C2 (en) 2013-03-25

Family

ID=48785107

Family Applications (1)

Application Number Title Priority Date Filing Date
UAA201113229A UA101440C2 (en) 2011-11-09 2011-11-09 method for ring bearings hardening and roller bearing

Country Status (2)

Country Link
RU (1) RU2493269C2 (en)
UA (1) UA101440C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2691022C1 (en) * 2018-03-28 2019-06-07 Общество с ограниченной ответственностью "Производственное коммерческое объединение "Термическая обработка металлов" Method for surface heat treatment of items from stainless chromium steels
RU2686403C1 (en) * 2018-04-25 2019-04-25 Общество с ограниченной ответственностью "Вологодский Завод Специальных Подшипников" Method for heat treatment of steel bearing ring
CN108486468A (en) * 2018-05-02 2018-09-04 本钢板材股份有限公司 A kind of high-carbon low-alloy bearing steel ring and its heat-treatment technology method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036824A (en) * 1957-09-03 1962-05-29 Alloyd Res Corp Heat treating devices
SU1257105A1 (en) * 1985-05-05 1986-09-15 Московский Ордена Трудового Красного Знамени Вечерний Металлургический Институт Method of heat treatment of large bearing races
RU2087549C1 (en) * 1995-03-23 1997-08-20 Московский вечерний металлургический институт Method of heat treatment of products
DE10250459A1 (en) * 2002-10-30 2004-05-13 Fag Kugelfischer Ag Rolling bearings in aircraft
JP4121128B2 (en) * 2003-10-29 2008-07-23 高周波熱錬株式会社 Induction heating device
DE102004053935B4 (en) * 2004-11-09 2015-04-09 Schaeffler Technologies AG & Co. KG Process for the heat treatment of a component made of a thermosetting heat-resistant steel and a component made of a thermosetting, heat-resistant steel
DE102005006701B3 (en) * 2005-02-15 2006-03-30 Rothe Erde Gmbh Production of bearing ring for large rolling bearing comprises arranging inductors over common zone of annular track to be hardened, heating the opposite-lying edge layer to the hardening temperature and further processing
JP4865265B2 (en) * 2005-07-07 2012-02-01 株式会社リコー Image processing apparatus, image processing method, program, and recording medium

Also Published As

Publication number Publication date
RU2011150610A (en) 2013-06-20
RU2493269C2 (en) 2013-09-20

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