US20180202015A1 - Device for treating, by heat tempering, a metal element of the tube or bar type having arched portions - Google Patents

Device for treating, by heat tempering, a metal element of the tube or bar type having arched portions Download PDF

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Publication number
US20180202015A1
US20180202015A1 US15/578,414 US201615578414A US2018202015A1 US 20180202015 A1 US20180202015 A1 US 20180202015A1 US 201615578414 A US201615578414 A US 201615578414A US 2018202015 A1 US2018202015 A1 US 2018202015A1
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US
United States
Prior art keywords
metal element
clamp
treatment device
induction coil
heat treatment
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.)
Abandoned
Application number
US15/578,414
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English (en)
Inventor
Philippe Jaubert
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.)
Eaton Leonard Group
Original Assignee
Eaton Leonard Group
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
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Publication of US20180202015A1 publication Critical patent/US20180202015A1/en
Abandoned legal-status Critical Current

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    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085—Cooling or 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
    • 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 invention relates to a thermal quenching treatment device for a metal element, tube or bar type, having curved sections.
  • this invention relates to a heat treatment device comprising heat treatment means comprising an induction coil and cooling means composed of spray nozzles integrated in an annular sprinkler ring.
  • the heat treatment device also includes holding means for holding the metal element and relative displacement means for the metal element holding means and heat treatment means adapted to generate a relative displacement of the metal element inside the induction coil and the sprinkler ring arranged close to each other.
  • the thermal treatment devices comprise a fixed support on which a plurality of clamps, each composed of two jaws, are secured.
  • the jaws are spaced from each other and arranged to be distributed along the longitudinal axis of the metal element.
  • the jaws are adapted to be successively opened to allow for the displacement of the induction coil and the annular sprinkler ring along the metal element.
  • the heat treatment devices comprise a fixed induction coil and a multi-axis robot whose arm is equipped with a support on which are positioned a plurality of clamps arranged to be distributed along a portion of the longitudinal axis of the metal element.
  • the clamps are spaced from each other so as to ensure the maintenance of the metal element during its passage through the induction coil.
  • the heat treatment device also includes, a multi-axis robot on whose arm is mounted the sprinkler ring.
  • the present invention aims at overcoming the disadvantages of the above-described devices for the heat treatment of metal elements. Its main purpose is to provide heat treatment devices designed to make it possible to treat, very simply, a wide range of metal elements by means of a single tooling.
  • the invention provides a device for thermal-quenching treatment of a metal element, of the tube or bar type, having curved sections.
  • the thermal quenching treatment device comprises a heat treatment device comprising an induction coil and cooling means.
  • the cooling means comprises spray nozzles integrated in an annular sprinkler ring.
  • the thermal quenching treatment device also includes a holding device for holding the metal element.
  • the thermal quenching treatment device further includes a relative displacement device associated with the metal element holding device and heat treatment device to generate a relative displacement of the metal element inside the induction coil and the sprinkler ring, which are arranged close to each other.
  • the holding device of the metal element is composed of a clamp arranged to grip an end section, the upper end, of the metal element, and to hold the metal element freely suspended under the clamp.
  • the displacement device is composed of a displacement mechanism able to simultaneously move the induction coil and the sprinkler ring along a metal element suspended under the clamp, from an end section, the lower end, of the metal element opposite to its upper section.
  • This design which consists of suspending the metal element by a holding device consisting of a simple clamp, and simultaneously moving the induction coil and the sprinkler ring along the metal element from its lower end, proves to lead to heat treatment, especially without causing interference between the heat treatment and cooling, of a wide range of metal elements that may have very complex shapes.
  • the clamp for holding the metal element is carried in a manner allowing for rotation of the clamp about an axis of rotation (x) able to give a movement oscillation of the metal element suspended under this clamp.
  • the clamp holding the metal element is, advantageously according to the invention, carried by a displacement device allowing for at least one axis of translation.
  • a combination consists, moreover, advantageously according to the invention, to mount the displacement device for rotation of the clamp about an axis of rotation (x) on means for moving the clamp along a vertical axis of translation (z) and a horizontal translation axis (y).
  • the thermal quenching treatment device can also, advantageously according to the invention, comprise means for driving the clamp in rotation about a vertical axis (z).
  • the degrees of freedom conferred on the clamp of the metal element offer additional possibilities of relative movement between the metal element and the induction coil/sprinkler ring assembly, and thus make it easier to maintain this element in the operating zone of the means for moving the induction coil and the sprinkler ring, and/or avoiding interference between the heat treatment and the cooling.
  • the displacement device of the induction coil is advantageously adapted, according to the invention, for an induction coil of a length so that the center of the median transverse plane of the induction coil is noticeably coaxial with the axis centered on the median plane of the neutral fiber Fn of the metal element.
  • This mode of defining the trajectory of the induction coil which consists in subtending this trajectory relative to the neutral fiber of the metal element, makes it possible to guarantee obtaining a minimum distance between the internal face of the induction coil and, respectively, the intrados and extrados of the metal element. This is possible for even very short radii of curvature of the order of 1, 5 to 2 times the diameter of the metal element, and leads to a significant increase in the range of metal elements that can be heat-treated by the treatment device according to the invention.
  • the induction coil and the sprinkler ring are each carried by a displacement device consisting of a multi-axis robot.
  • the holding device of the metal element can also be carried by a displacement device consisting of a multi-axis robot adapted to confer several degrees of freedom in rotation and in translation.
  • the heat treatment device according to the invention comprises, moreover, advantageously according to the invention, a multi-axis unloading robot provided with a clamp for gripping the metal element after heat treatment.
  • the clamp for holding the metal element consists of a tubular clamp adapted to cap and grip the upper portion of the metal element and to extend in the axial extension of the section superior thereto.
  • this tubular clamp advantageously has, according to the invention, an outer diameter less than the respective internal diameters of the induction coil and the sprinkler ring, and is adapted to allow the axial displacement of the induction coil and the sprinkler ring along the tubular clamp.
  • This tubular clamp design makes it possible to bring the induction coil and the sprinkler ring to a final position in which they extend around the tubular clamp, and thus release the entire length of the tube metal element.
  • the thermal treatment device advantageously comprises a source of cold fluid connected to inject a flow of cold fluid into the upper end section of the metal element, during the heat treatment of the latter.
  • This injection of cold fluid into the upper portion of the metal element makes it possible to evacuate the hot vapors produced in the metaflique element during its cooling, and thus favors this cooling step.
  • FIG. 1 is a schematic perspective view of a thermal quenching treatment device according to the invention
  • FIG. 2 is a perspective view of the means of this device for processing, holding and moving a metal element:
  • FIG. 3 is a longitudinal section through an axial plane of the clamp for holding a metal element and means for heat treatment of this metal element, represented positioned at the end of the treatment operation:
  • FIG. 4 is a cross section through a plane A of FIG. 3 ;
  • FIG. 5 is an explanatory diagram of the mode of displacement of the induction coil.
  • the treatment device according to the invention shown in the figures consists of a device for heat-quenching treatment of a metal element of the bar or tube type, such as a suspension element of a motor vehicle, which may notably consist of: shown in a torsion bar 1 .
  • This thermal quenching treatment device comprises a holding device 2 for holding the metal element 1 .
  • the holding device 2 is composed of a clamp arranged to be positioned in the vicinity of an end section, the upper end, of the metal element so that the metal element 1 is kept freely suspended under the clamp.
  • the thermal quenching treatment device also includes displacement devices for moving the clamp 2 , on the one hand, in translation along a vertical axis (z) and along a horizontal axis (y), and on the other hand, in rotation around the vertical axis (z) and around a horizontal axis (x) perpendicular to the plane (y, z).
  • the clamp consists of a tubular clamp 2 of the type of free cutting pliers comprising a part of revolution partially split along several generatrices, allowing, by its elasticity, to tighten on the outside of a cylindrical part of the metal element 1 .
  • this clamp 2 comprises an outer tube 10 having a flared end forming a conical seat 11 and an inner tube 12 pierced with a longitudinal axial bore 13 .
  • the longitudinal axial bore 13 is extended by a conical head 14 adapted to be housed in the seat 11 of the outer tube 10 .
  • the conical head 14 is provided with four radial slots such as to give it its elasticity.
  • the conical head 14 has a front face in which is formed a countersink 16 for clamping the end of the metal element 1 , and a displacement device for relative displacement of the outer tube 10 and the inner tube 12 between a loading position of a metal element 1 in the counterbore 16 , in which the conical head 14 extends in the extension of the outer tube 10 , and a clamping position of the end of the metal element 1 , in which the conical head 14 is clamped in the conical seat 11 .
  • the displacement device of the outer tube 10 and the inner tube 12 is adapted to move the outer tube 10 longitudinally along the inner tube 12 .
  • the displacement device consists of a jack 17 vertically connected to the outer tube 10 by a system of rods 18 .
  • the displacement device of the clamp 2 is positioned on the vertical front face of a frame 3 .
  • the displacement device of clamp 12 comprises a first carriage 4 guided along vertical rails 5 , and driven along the rails 5 by a motorized assembly (not shown), and a second carriage 6 carried by the first carriage 4 , guided along horizontal rails 7 extending along axes (y) parallel to the front face of the frame 3 , and driven along the rails by a motorized assembly (not shown).
  • the displacement device also includes a gallow 8 rotatably mounted relative to the second carriage 6 about a horizontal axis (x) perpendicular to the front face of the frame 3 .
  • the gallow 8 is rotated by a motor assembly (not shown).
  • the tubular clamp 2 is rotatably mounted within the gallow 8 for rotation around a vertical axis (z), by means of a motor 9 .
  • the first carriage 4 is equipped with a retractable stand for stiffening the tubular clamp 2 .
  • the first carriage comprises a support piece 19 mounted on the end of the two rods 20 a of a jack 20 arranged along an axis (x), whose body 20 b is secured to the first carriage 4 .
  • this support piece 19 comprises a housing 21 of a shape adapted to house the lower end of the tubular clamp 2 .
  • a groove 22 intended to house the upper section of the suspended metal element 1 under the tubular clamp 2 .
  • the thermal quenching treatment device further comprises a heat treatment device and a cooling device of the type described in the European Patent EP 1 405 926, and thus constituted, respectively, of an induction coil 23 and an annular sprinkler ring 26 in which are integrated spray nozzles 27 .
  • Displacement devices are provided to simultaneously move the induction coil 23 and the sprinkler ring 26 along the metal element 1 suspended under the tubular clamp 2 , from the lower end section of the metal element 1 .
  • the displacement device comprises, for each of the two elements, that is, the induction coil 23 and the sprinkler ring 26 , a multi-axis robot 24 , 28 shown schematically in FIG. 1 .
  • Each of the multi-axis robots 24 , 28 comprise, in a conventional manner, a terminal arm 25 , 29 provided with a gripping member for the induction coil 23 and the sprinkler ring 26 .
  • the thermal quenching treatment device furthermore comprises, as shown diagrammatically in FIG. 3 , a third multi-axis unloading robot 30 equipped with a terminal arm 31 equipped with a gripper 32 for gripping the metal element 1 after heat treatment.
  • the treatment device comprises, finally, an air source 33 connected to inject a cold air flow into the upper end section of the metal element 1 during the heat treatment of the metal element 1 .
  • the metal element 1 is suspended under the tubular clamp 2 .
  • the heat treatment is then carried out by simultaneously moving the induction coil 23 and the sprinkler ring 26 along the metal element 1 from the lower end section of the metal element 1 .
  • the simultaneous movement of the induction coil 23 and the sprinkler ring 26 along the metal element 1 may be by combined with displacements in translation along the axis (y) and/or along the axis (z), and/or rotations around the axis (x) and/or the axis (z) of the tubular clamp 2 .
  • Such displacement is intended to allow the metal element 1 to be held in the operating zone of the two multi-axis robots 24 , 28 , and/or to avoid interference between the heat treatment and the cooling.
  • the displacement of the induction coil 23 and, possibly, of the tubular clamp 2 are controlled, as shown in FIG. 5 , for the length of the induction coil 23 , so that the center of the median transverse plane of the induction coil 23 (that is to say the transverse plane located at half-length 1 ⁇ 2 of the induction coil 23 ), is at least substantially coaxial with the neutral fiber Fn of the metal element on the median plane thereof (that is to say the longitudinal axis 1 ⁇ 2 on either side of the median plane).
  • the trajectory conferred on the induction coil 23 according to this principle 25 makes it possible to guarantee obtaining a minimum distance between the internal face of the induction coil 23 and the intrados and the extrados of the metal element 1 , even for very short radii of curvature of the order of 1.5 to 2 times the diameter of the metal element.
  • the simultaneous displacement of the induction coil 23 and the sprinkler ring 26 is further adapted to bring the induction coil 23 and the sprinkler ring 26 to a final position, shown in FIG. 3 , in which they extend around the tubular clamp 2 .
  • this end length is usually intended to undergo machining by forming and therefore does not need to be heat treated, so that the treatment device leads to treat the entire length of the metal element 1 requiring a heat treatment.
  • This final position also allows easy access to the metal element 1 , allowing its unloading by means of the unloading robot.
US15/578,414 2015-03-30 2016-03-29 Device for treating, by heat tempering, a metal element of the tube or bar type having arched portions Abandoned US20180202015A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1500661A FR3034432A1 (fr) 2015-03-30 2015-03-30 Dispositif de traitement par trempe thermique d'un element metallique, du type tube ou barre, presentant des troncons cintres
FR1500661 2015-03-30
PCT/FR2016/000060 WO2016156679A1 (fr) 2015-03-30 2016-03-29 Dispositif de traitement par trempe thermique d'un élément métallique, du type tube ou barre, présentant des tronçons cintrés.

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US20180202015A1 true US20180202015A1 (en) 2018-07-19

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US15/578,414 Abandoned US20180202015A1 (en) 2015-03-30 2016-03-29 Device for treating, by heat tempering, a metal element of the tube or bar type having arched portions

Country Status (7)

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US (1) US20180202015A1 (fr)
EP (1) EP3277849A1 (fr)
CN (1) CN108012547A (fr)
CA (1) CA2987060A1 (fr)
FR (1) FR3034432A1 (fr)
RU (1) RU2017142372A (fr)
WO (1) WO2016156679A1 (fr)

Cited By (3)

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CN110438300A (zh) * 2018-09-17 2019-11-12 湖北江山专用汽车有限公司 一种立式回火定位支撑装置
CN111206145A (zh) * 2020-03-30 2020-05-29 上海精智实业股份有限公司 一种夹持工装
CN111270053A (zh) * 2020-03-30 2020-06-12 上海精智实业股份有限公司 一种淬火系统及淬火方法

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CN112430718A (zh) * 2020-12-18 2021-03-02 辉县市恒兴金属制品有限公司 一种花生捡拾机排草风机叶轮叶片淬火工艺

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US20110284526A1 (en) * 2010-05-19 2011-11-24 Benteler Automobiltechnik Gmbh Clamping apparatus and method of heat-treating a long material

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CN1020754C (zh) * 1988-11-26 1993-05-19 A·E·毕晓普及合夥人有限公司 一种在扫描感应加热淬火中对弯曲工件矫直的方法
EP1052295B1 (fr) * 1999-05-12 2004-07-21 Benteler Ag Méthode de fabrication d'éléments structurels dans la construction automobile
FR2845397B1 (fr) * 2002-10-02 2005-07-29 Allevard Rejna Autosuspensions Installation de trempe par induction, notamment pour la fabrication d'elements de suspension
JP5496584B2 (ja) * 2009-09-04 2014-05-21 デルタ工業株式会社 板状部品の高周波焼入れ方法
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CN103114191A (zh) * 2013-03-20 2013-05-22 南京盛泰工程机械有限公司 一种薄壁长管内壁高频淬火专用机床
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110438300A (zh) * 2018-09-17 2019-11-12 湖北江山专用汽车有限公司 一种立式回火定位支撑装置
CN111206145A (zh) * 2020-03-30 2020-05-29 上海精智实业股份有限公司 一种夹持工装
CN111270053A (zh) * 2020-03-30 2020-06-12 上海精智实业股份有限公司 一种淬火系统及淬火方法
WO2021197119A1 (fr) * 2020-03-30 2021-10-07 上海精智实业股份有限公司 Système de trempe et procédé de trempe

Also Published As

Publication number Publication date
RU2017142372A3 (fr) 2019-08-09
EP3277849A1 (fr) 2018-02-07
CN108012547A (zh) 2018-05-08
RU2017142372A (ru) 2019-08-09
FR3034432A1 (fr) 2016-10-07
CA2987060A1 (fr) 2016-10-06
WO2016156679A1 (fr) 2016-10-06

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