EP3108018A1 - Système, installation de fabrication et procédé - Google Patents

Système, installation de fabrication et procédé

Info

Publication number
EP3108018A1
EP3108018A1 EP15708456.7A EP15708456A EP3108018A1 EP 3108018 A1 EP3108018 A1 EP 3108018A1 EP 15708456 A EP15708456 A EP 15708456A EP 3108018 A1 EP3108018 A1 EP 3108018A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
inductor
side cooling
cooling
heating
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15708456.7A
Other languages
German (de)
English (en)
Inventor
Marco Burtchen
Mathieu LANGELS
Tatiana ZEDLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp AG
ThyssenKrupp Rothe Erde Germany GmbH
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Rothe Erde GmbH
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 ThyssenKrupp AG, ThyssenKrupp Rothe Erde GmbH filed Critical ThyssenKrupp AG
Publication of EP3108018A1 publication Critical patent/EP3108018A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • 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
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
    • 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

Definitions

  • the present invention relates to a system for spatially limited heating of a workpiece during its curing and a method for inductive hardening, in particular surface hardening of a workpiece.
  • Inductive hardening is a widely used method for the partial hardening of workpieces and is known, for example, from the document DE 10 2012 101 304 A1.
  • an alternating magnetic field caused by an inductor is directed to the conductive workpiece.
  • the magnetic field induces eddy currents in a target area (an edge region of the workpiece) that cause heating required for the hardening process.
  • temperatures of about 1000 ° C in the workpiece edge can be achieved in this way.
  • the present invention achieves the object by a system for limited heating in a workpiece hardening process, the system comprising an inductor for partially heating the workpiece and a side cooling for limiting heat generation in the workpiece caused by the inductor, the side cooling being applied directly to the inductor is arranged.
  • the present invention has the advantage that by means of the side cooling, the area of the workpiece is adjacent, which immediately adjacent to the target area, where target area is the area to be hardened by the heating. This allows the heat development of the workpiece to be limited to the target area.
  • the workpiece is a roller bearing, in particular a large roller bearing.
  • Such slewing bearings are used for example in giant wheels or wind turbines. The occurring forces require high demands on the hardening, so that the rolling bearings can guarantee long-term safe operation.
  • the inductor comprises a coil or
  • Conductor loop in particular a copper coil, with an alternating current with a
  • the target area on the workpiece is preferably heated within a few seconds directly to a temperature of about 1000 ° C.
  • the side cooling is fixed in position relative to the inductor. By fixing the user of the system is also spared to align a device for cooling in changing workpieces again and again to the desired location on the workpiece.
  • the system is arranged stationary and the workpiece is movable relative to the system along a machining direction, wherein the inductor and the side cooling are arranged adjacent to each other along the machining direction.
  • the inductor and the side cooling are connected via supply lines with current or quenching means for a local cooling of the workpiece.
  • Supply lines should be sized and designed so that they could be carried along in an otherwise necessary movement along the circumference of the workpiece.
  • Basic body having an outlet bore for guiding a cooling jet comprising a quenching agent.
  • the outlet hole specifies at which point next to the target area the cooling should take place, wherein the outlet bore is advantageously dimensionally stable during the hardening process and thus the orientation of the cooling jet relative to the target area remains substantially constant in the hardening process.
  • the outlet bore is inclined to a direction perpendicular to the machining direction.
  • the outlet bore is inclined so that the inclination determines the distance between the target area and the area cooled by the quenching means.
  • the amount of quenching agent supplied to the workpiece can be determined or determined, adapted to the workpiece.
  • the side cooling for metering a volume flow of the cooling jet comprises a pressure reducer and / or a set screw.
  • the cooling can be set even more precisely by the side cooling. It is conceivable that via pressure reducer and / or screw fine tuning takes place.
  • pressure reducer and adjusting screw change the cooling flow during the curing process or post-corrected.
  • pressure reducer and screw are part of a control loop, which ensures a correction of the set cooling current as soon as a temperature is detected in the environment of the system, which exceeds a threshold.
  • the adjusting screw can be fixed. As a result, it can be ensured in an advantageous manner that the cooling flow does not change unintentionally during the hardening process.
  • the system comprises a further side cooling, which is arranged directly on the inductor and fixable in position, wherein the inductor between the side cooling and the further side cooling is arranged along the machining direction.
  • the quenching agent comprises air, water, oil, a solution and / or an emulsion.
  • the quenching agent comprises air, water, oil, a solution and / or an emulsion.
  • Quenchant before it is fed to the workpiece pre-cooled.
  • the appropriate quenching agent can be the desired areas on the workpiece efficiently and selectively cool.
  • the system comprises a plurality of inductors
  • the inductor has an adapted to the workpiece Induktorgeometrie and / or
  • the main body comprises a plurality of outlet holes. As a result, several sections can be cured simultaneously, which advantageously accelerates the curing process.
  • the system comprises a drive for a feed movement of the workpiece, wherein the feed movement is controllable by the drive.
  • the drive is a rolling drive, the causes the feed movement of the workpiece.
  • a continuous movement of the workpiece can be realized by the drive.
  • Another object is a production plant for manufacturing a rolling bearing, preferably a large rolling bearing, wherein the manufacturing plant one of the above
  • Another object is a method for inductive hardening, in particular for
  • the workpiece is moved by means of a drive relative to a system consisting of the inductor and the side cooling, in particular relative to one of the systems described above.
  • the workpiece is shaped, preferably cast and / or milled, in a zero-step method step upstream of the first method step. It is conceivable that the workpiece is hardened immediately after it has been cast, forged and / or milled.
  • Figure 1 shows in a perspective view a system for spatially limited heating of a workpiece during curing according to a first exemplary
  • FIG. 2 shows a system for spatially heating a workpiece during curing according to a second exemplary embodiment of the present invention.
  • FIGS. 3a to 3d each show a system for spatially heating a workpiece during curing according to third, fourth, fifth and sixth exemplary embodiments of the present invention.
  • FIG. 1 shows a system 1 for spatially heating a workpiece 10 during its hardening according to a first exemplary embodiment of the present invention.
  • an inductor 2 is provided, which is supplied with an alternating current and then partially applied to the workpiece 10 via a magnetic field caused by the alternating current, i. spatially limited, acts.
  • an edge layer of the workpiece 10 is heated and thereby, preferably within a few seconds, heated to about 1000 ° C.
  • the commonly used materials is in the outer layer through the
  • quenching occurs at a high cooling rate using a showerhead which directs the quenching agent onto the workpiece.
  • a showerhead which directs the quenching agent onto the workpiece.
  • it is possible to generate a heat-in-depth or a Rht-profile which, in addition, can also be generated by the temperature distribution in the surface layer of the workpiece or by the frequency of the alternating current
  • the workpiece 10 is a rolling bearing, in particular a large rolling bearing, as used for example in giant wheels or wind turbines.
  • Such workpieces 10 are preferably formed in advance of the curing process, in particular cast and / or milled. It is provided in particular that a closed curve of the workpiece 10, in particular a running surface of a bearing ring, is hardened. For the hardening of the entire workpiece 10 or only of certain areas of the workpiece 10, it is provided that the inductor 2 in
  • the movement along the machining direction B preferably takes place continuously.
  • the inductor 2 is directed to an inner side and / or an outer side of the workpiece 10. To prevent the heated edge area from obstructing other areas of the workpiece 10 or others
  • the system 1 next to the inductor 2 comprises a side cooling 3, which is arranged directly on the inductor 2.
  • a side cooling 3 which is arranged directly on the inductor 2.
  • Side cooling 3 is fixed, which it saves the user of the system 1 in an advantageous manner, re-align the side cooling 3 time-consuming repeated when changing the workpiece 10.
  • the side cooling 3 is arranged behind the inductor 2 when viewed in the machining direction B, in order to protect already hardened area from renewed and unwanted heating. It is also conceivable that the
  • Side cooling 3 is designed such that the side cooling 3 prevents heat transfer from the heated edge region, the target area, in several directions.
  • a further side cooling in the processing direction B is arranged in front of the inductor 2 in order to preserve areas of the workpiece 10 that have not yet hardened before the unwanted heating.
  • rolling bearings is a limitation of
  • FIG. 2 shows a system 1 for spatially limited heating of a workpiece 10 when it is hardened according to a second exemplary embodiment of the present invention, with only part of the embodiment shown in FIG.
  • Machining direction B moving workpiece 10 is illustrated.
  • this includes System 1 according to the second embodiment of the present invention, two inductors 2, on each of which a side cooling 3 is arranged directly.
  • the inductors 2 on each of which a side cooling 3 is arranged directly.
  • Inductors 2 with respect to the workpiece 10 arranged opposite to each other, whereby the workpiece 10, both along the inside and along the outside, preferably simultaneously, can be cured.
  • the side cooling 3 while the heat development of the workpiece 10 is limited or limited to a heating area 9 in a positive manner.
  • FIGS. 3 a to 3 d systems 1 for spatially limited heating of a workpiece 10 during its hardening according to a third, fourth, fifth and a sixth exemplary embodiment of the present invention are respectively shown.
  • the systems 1 are each shown in the already known from Figure 2 detailed representation.
  • the side cooling 3 has an outlet bore 12, which serves to guide a quenching agent comprehensive cooling flow.
  • the quenching agent comprises air, oil, water or a special emulsion or solution.
  • the cooling flow directed to the workpiece 10 in the side cooling 3 from FIG. 3 a will be greater than that of the side cooling from FIG.
  • the cooling flow can be aligned to a desired range relative to the area heated by the inductor 2 by aligning the outlet bore 12.
  • the general profile of the outlet bore 12 is inclined relative to a direction perpendicular to the machining direction B, as shown in the embodiment in Figure 3c.
  • the dosage of the volume flow by means of a pressure reducer 17 can be regulated.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

La présente invention concerne un système de chauffage spatialement délimité lors du durcissement d'une pièce, lequel système comprend un inducteur permettant le chauffage partiel de la pièce et un élément de refroidissement latéral permettant de délimiter un dégagement de chaleur dans la pièce induit par l'inducteur. L'élément de refroidissement latéral est placé directement sur l'inducteur et peut être fixé dans sa position.
EP15708456.7A 2014-02-21 2015-02-17 Système, installation de fabrication et procédé Withdrawn EP3108018A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014102288.2A DE102014102288A1 (de) 2014-02-21 2014-02-21 System, Fertigungsanlage und Verfahren
PCT/EP2015/053347 WO2015124585A1 (fr) 2014-02-21 2015-02-17 Système, installation de fabrication et procédé

Publications (1)

Publication Number Publication Date
EP3108018A1 true EP3108018A1 (fr) 2016-12-28

Family

ID=52630332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15708456.7A Withdrawn EP3108018A1 (fr) 2014-02-21 2015-02-17 Système, installation de fabrication et procédé

Country Status (4)

Country Link
EP (1) EP3108018A1 (fr)
CN (1) CN106029916A (fr)
DE (1) DE102014102288A1 (fr)
WO (1) WO2015124585A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016114895A1 (de) * 2016-08-11 2018-02-15 Thyssenkrupp Ag Verfahren zum Härten einer Wälzkörperlaufbahn eines Wälzlagerrings und Wälzlagerring
DE102020103299A1 (de) 2020-02-10 2021-08-12 Sms Elotherm Gmbh Verfahren zum induktiven Randschichthärten

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767227C (de) * 1939-09-30 1952-03-03 Deutsche Edelstahlwerke Ag Verfahren und Vorrichtung zum Oberflaechenhaerten von metallischen Gegenstaenden mittels induktiver Erhitzung
DE864561C (de) * 1949-03-14 1953-01-26 Robert Dr Pribyl Oberflaechenhaertung von plattenfoermigen Gegenstaenden
DE955514C (de) * 1944-02-16 1957-01-17 Siemens Ag Verfahren und Vorrichtung zum induktiven Oberflaechenhaerten von Werkstuecken durch nebeneinander gelegte Haertestreifen
DE956231C (de) * 1944-10-01 1957-01-17 Siemens Ag Werkstueckkuehlvorrichtung an Induktionshaertemaschinen
US3174884A (en) * 1961-03-04 1965-03-23 Deutsche Edelstahlwerke Ag Method of surface hardening steel rolls and apparatus for carrying out the same
JP2000054027A (ja) * 1998-08-06 2000-02-22 Nippon Seiko Kk リニアガイドレールの製造方法
DE102008009009B3 (de) * 2008-02-13 2009-01-02 Esser-Werke Gmbh & Co. Kg Verfahren und Vorrichtung zur Wärmebehandlung eines Rohrkörpers für ein Förderrohr sowie Verfahren zur Herstellung eines Förderrohrs
DE102008012577B3 (de) * 2008-02-13 2009-01-29 Esser-Werke Gmbh & Co. Kg Verfahren und Vorrichtung zur Wärmebehandlung eines Rohrkörpers für ein Förderrohr sowie Verfahren zur Herstellung eines Förderrohrs
DE102009053197A1 (de) * 2009-11-06 2011-05-12 Imo Holding Gmbh Verfahren und Vorrichtung zum induktiven Härten großer ringförmiger Werkstücke

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005330545A (ja) * 2004-05-20 2005-12-02 Ntn Corp 高周波焼入方法および装置
JP2008126915A (ja) * 2006-11-24 2008-06-05 Ntn Corp 車輪用軸受装置における外方部材の熱処理方法
JP5105228B2 (ja) * 2007-02-20 2012-12-26 高周波熱錬株式会社 高周波熱処理装置
JP2008303402A (ja) * 2007-06-05 2008-12-18 Nsk Ltd 高周波焼入れ装置、転がり軸受の製造方法、転がり軸受
CN101701285A (zh) * 2009-11-17 2010-05-05 地质矿产部无锡钻探工具厂 中频感应处理绳索钻杆的设备和工艺
CN103582709B (zh) * 2011-07-13 2015-04-01 都美工业株式会社 热处理系统及热处理方法
DE102012101304A1 (de) 2012-02-17 2013-08-22 Thyssenkrupp Rothe Erde Gmbh Verfahren und Anordnung zum Vorschub-Randschichthärten
DE102012101309A1 (de) * 2012-02-17 2013-08-22 Thyssenkrupp Rothe Erde Gmbh Verfahren zum induktiven Randschichthärten einer Ringfläche

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767227C (de) * 1939-09-30 1952-03-03 Deutsche Edelstahlwerke Ag Verfahren und Vorrichtung zum Oberflaechenhaerten von metallischen Gegenstaenden mittels induktiver Erhitzung
DE955514C (de) * 1944-02-16 1957-01-17 Siemens Ag Verfahren und Vorrichtung zum induktiven Oberflaechenhaerten von Werkstuecken durch nebeneinander gelegte Haertestreifen
DE956231C (de) * 1944-10-01 1957-01-17 Siemens Ag Werkstueckkuehlvorrichtung an Induktionshaertemaschinen
DE864561C (de) * 1949-03-14 1953-01-26 Robert Dr Pribyl Oberflaechenhaertung von plattenfoermigen Gegenstaenden
US3174884A (en) * 1961-03-04 1965-03-23 Deutsche Edelstahlwerke Ag Method of surface hardening steel rolls and apparatus for carrying out the same
JP2000054027A (ja) * 1998-08-06 2000-02-22 Nippon Seiko Kk リニアガイドレールの製造方法
DE102008009009B3 (de) * 2008-02-13 2009-01-02 Esser-Werke Gmbh & Co. Kg Verfahren und Vorrichtung zur Wärmebehandlung eines Rohrkörpers für ein Förderrohr sowie Verfahren zur Herstellung eines Förderrohrs
DE102008012577B3 (de) * 2008-02-13 2009-01-29 Esser-Werke Gmbh & Co. Kg Verfahren und Vorrichtung zur Wärmebehandlung eines Rohrkörpers für ein Förderrohr sowie Verfahren zur Herstellung eines Förderrohrs
DE102009053197A1 (de) * 2009-11-06 2011-05-12 Imo Holding Gmbh Verfahren und Vorrichtung zum induktiven Härten großer ringförmiger Werkstücke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2015124585A1 *

Also Published As

Publication number Publication date
WO2015124585A1 (fr) 2015-08-27
CN106029916A (zh) 2016-10-12
DE102014102288A1 (de) 2015-08-27

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