EP1006202A2 - Procédé et dispositif pour le traitement thermique de pièces - Google Patents

Procédé et dispositif pour le traitement thermique de pièces Download PDF

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Publication number
EP1006202A2
EP1006202A2 EP99122351A EP99122351A EP1006202A2 EP 1006202 A2 EP1006202 A2 EP 1006202A2 EP 99122351 A EP99122351 A EP 99122351A EP 99122351 A EP99122351 A EP 99122351A EP 1006202 A2 EP1006202 A2 EP 1006202A2
Authority
EP
European Patent Office
Prior art keywords
parts
homogenization
station
hardening
carrier
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Withdrawn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
EP99122351A
Other languages
German (de)
English (en)
Other versions
EP1006202A3 (fr
Inventor
Günter Disch
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.)
Aichelin GmbH
Original Assignee
ALD AICHELIN GmbH
Aichelin GmbH Germany
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 ALD AICHELIN GmbH, Aichelin GmbH Germany filed Critical ALD AICHELIN GmbH
Publication of EP1006202A2 publication Critical patent/EP1006202A2/fr
Publication of EP1006202A3 publication Critical patent/EP1006202A3/fr
Withdrawn legal-status Critical Current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
    • C21D9/0062—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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/26—Methods of annealing
    • 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
    • C21D1/63—Quenching devices for bath 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • 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

Definitions

  • the invention relates to a method for the heat treatment of Parts, preferably made of steel, in which the parts are under protective gas at a temperature above a conversion line, preferably at a temperature above the eutectoid of Steel of 723 ° C and then homogenized in one Quench bath can be hardened martensitic.
  • the invention further relates to a plant for heat treatment parts, preferably made of steel, with a homogenizing furnace with protective gas atmosphere for homogenization annealing Parts at a temperature above a conversion line, preferably above that of the steel eutectoid of 723 ° C, and with a hardening station to quench the parts after homogenization annealing in a quench bath.
  • the invention further relates to a plant for heat treatment of parts with a hardening station for hardening the parts in a quenching bath, and with a vertically movable parts carrier.
  • the invention relates to a plant for heat treatment of parts, with a plurality of treatment stations the parts, preferably at least with a homogenization station and a hardening station for hardening the parts.
  • the parts are first placed in an oven under a protective gas atmosphere annealed or austenitized, provided that it is Steel parts.
  • the parts are then removed from the furnace using a roller conveyor pulled out and on a parts carrier with the help of a Move vertically movable slide on a portal and then immersed from above in a quench bath for hardening. After hardening, the workpiece carrier is moved up again and then transferred to a subsequent station, where it can be a washing station to which one Starter station connects.
  • the known method and the known system already enable a relatively compact structure.
  • the object of the invention is therefore an improved Process and an improved plant for heat treatment to create parts, which is as compact and cost-saving construction is made possible and the environmental impact is kept as low as possible.
  • the invention is also in the system mentioned at the beginning Heat treatment of parts solved in that the homogenizing furnace a preheating station for preheating the parts in air to a temperature of at least 300 ° C, preferably to a Temperature of 400 to 600 ° C, is connected upstream.
  • the duration of the parts in the homogenization furnace can be clearly be shortened, which is why the homogenization furnace accordingly can be run shorter.
  • the parts quenched after homogenization with exclusion of air and then blown off with inert gas.
  • the parts are preferably nitrogen, preferably blown off at a temperature of about 150 ° C.
  • the object of the invention is also in a plant for heat treatment parts with a hardening station for hardening the parts in a quench bath, and with a vertically movable one Parts carrier solved in that the parts carrier at least has two levels for receiving parts and while the immersion of parts picked up on the lower level dripping into the quench bath from the one above parts included in the upper level.
  • the Allowing parts to be picked up in at least two levels, that is, it is made possible during the quenching of Parts that are on the lower level at the same time Drain parts located on a level above allow.
  • the quenching bath enclosed in a housing and via a side loading channel with an outlet opening of the homogenization furnace connected, with a transport device for transport of parts from the outlet opening into the laterally open parts carrier is provided.
  • the transport device designed as a roller conveyor that goes over the quenching bath is sufficient, with the parts carrier running parallel Has webs whose spacing is such that the parts carrier can be lowered through the gaps between adjacent roles is.
  • the curing station enclosed by a housing, one on the top Opening for retracting and extending the parts carrier is provided, the parts carrier preferably having one in the opening gastight insertable lid is connected and by means of a Lifting device can be moved vertically when the lid is closed is.
  • This measure prevents liquid from escaping from the Quench bath prevented during the hardening process and at the same time dripping of hardened parts during hardening enabled by other parts.
  • a portal is provided, on which at least one vertically movable slide with a gripper for transporting parts or part carriers is provided between adjacent stations.
  • This measure supports a compact construction of the plant.
  • a blowing device to blow off recorded on the upper level Parts provided.
  • the object of the invention is also in a plant for heat treatment of parts, with a plurality of stations for Treatment of the parts, preferably at least with an annealing station and a hardening station for hardening the parts, solved in that the stations on a common frame are attached.
  • the object of the invention is accomplished solved because by using a common warp resistant Frame on which all stations of the system are pre-assembled be a compact and space-saving design of the Facility is made possible. Furthermore, the total cost of the facility reduced because all stations in the manufacturer's factory the entire system can already be pre-assembled and tested, whereby the assembly effort and the commissioning effort the system is significantly reduced by the user. Also such a pre-assembly allows additional cable ducts save as this is integrated into the frame of the system can be.
  • Fig. 1 is an inventive system for heat treatment of parts, preferably steel parts, in total with the Number 10 denotes.
  • All stations of the plant are on a common framework 36 mounted.
  • the assembly can already be done in the factory of the Manufacturer and the entire system in completely assembled Condition to be transported and delivered. It can the electrical wiring has already been completed be and optionally integrated into the frame, so that the frame simultaneously as a cable duct and for attachment of other electrical installation material.
  • the system 10 comprises a preheating station 14 which is in the air an oil or gas burner 15 is operated, a homogenization furnace 16, a subsequent curing station 18 to which connect a washing station 20 and a starting station 22.
  • a portal 26 is provided on which two horizontally movable carriages 28 and 31 are provided, on each of which a vertically movable Carriage 29 and 32 with a gripper arranged thereon 30 or 33 is provided.
  • the parts carrier 48 can by means of the first gripper 30 from the curing station 18 upwards in the direction of the arrow 34 are moved and after moving the carriage 28 on the Portal 26 are transferred to the adjacent washing station 20.
  • the curing station 18 completely by a housing 54 is enclosed, has a side opening 46 which over a gas-tight feed channel 44 immediately connected to the outlet opening 40 of the homogenization furnace 16 is.
  • This construction enables a particularly compact design and at the same time without additional locks or the like elaborate measures a transport of parts 11 from the Homogenization oven 16 in the absence of air immediately up to the curing station 18 enables.
  • the workpiece carrier 48 is as shown below 2 is explained in more detail, arranged and designed in such a way that the parts 11 with the shutter 42 of the homogenization oven open 16 through the roller conveyor 13 into the side open parts carrier 48 can be transferred.
  • the parts 11 to be treated can be any Trade parts that are first annealed and then in one Quench bath must be hardened, e.g. around rings made of bearing steel for rolling bearings.
  • FIG. 2 The enlarged sectional view according to FIG. 2 shows that the curing station 18 completely from a housing 54 is enclosed, at the top of which an opening 58 is provided is.
  • This opening 58 is gas-tight by means of a cover 56 closable, on the underside of which the parts carrier 48 is hung.
  • the parts carrier 48 is in the opening 58 inserted cover 56 by means of a total of the number 60 designated lifting device vertically movable.
  • two lifting cylinders 61, 64 are provided, by means of which Carriers 62, 65, which engage the parts carrier 48 laterally, in Direction of arrows 63, 66 are vertically movable so as to Parts carrier 48 with lid 56 closed in the vertical direction to be able to adjust.
  • the parts carrier 48 has two levels arranged one above the other for receiving parts, a lower level 49 and an upper one Level 50. These levels 49, 50 are of parallel to each other extending webs 51 are formed, the distance between which is dimensioned so that the parts carrier 48 through spaces between adjacent roles 52 of the roller conveyor 13 can be lowered.
  • the quenching process itself is preferably done by the Quenchant, such as the oil or salt liquid, and the rollers 52 are reversely moved relative to one another, as is known in principle from DE 44 01 228 A1. Thereby is a largely distortion-free hardening of the parts 11th enables so that a large dimensional accuracy is achieved.
  • the Quenchant such as the oil or salt liquid
  • the lid 56 After quenching, draining and blowing off the on the parts carrier 48 recorded parts 11, the lid 56 is put together with the parts carrier 48 suspended from it by means of the gripper 30 of the first slide 28 upwards from the hardening station 18 drove out to the neighboring station, the washing station 20, passed where the parts 11 unloaded from the parts carrier 48 are then returned to the curing station 18 to accommodate the next batch of parts.
  • the entire system 10 can thus be complete in the manufacturer's factory mounted on the frame 36 and completely electrically wired become. This enables the entire system 10 without additional effort completely preferably in the cold state to check their function. Furthermore, the assembly effort significantly reduced by the user, since the system 10 in the complete assembled state can be transported and at the user only needs to be set up and put into operation. In this way, the manufacturing and assembly effort becomes clear reduced and the risk of malfunctions during commissioning reduced.

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  • 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)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
EP99122351A 1998-12-05 1999-11-10 Procédé et dispositif pour le traitement thermique de pièces Withdrawn EP1006202A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19856191 1998-12-05
DE1998156191 DE19856191C2 (de) 1998-12-05 1998-12-05 Anlage zur Wärmebehandlung von Teilen

Publications (2)

Publication Number Publication Date
EP1006202A2 true EP1006202A2 (fr) 2000-06-07
EP1006202A3 EP1006202A3 (fr) 2003-08-06

Family

ID=7890111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122351A Withdrawn EP1006202A3 (fr) 1998-12-05 1999-11-10 Procédé et dispositif pour le traitement thermique de pièces

Country Status (2)

Country Link
EP (1) EP1006202A3 (fr)
DE (1) DE19856191C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008055477A3 (fr) * 2006-11-09 2008-11-27 Schaeffler Kg Procédé de production d'une bague de roulement, et bague de roulement correspondante
CN104313259A (zh) * 2014-11-22 2015-01-28 唐山亚捷机械有限公司 高铬轴承钢零件的马氏体、贝氏体等温盐浴淬火生产线
CN109252039A (zh) * 2017-07-14 2019-01-22 江苏持华轴承有限公司 一种连续热处理工序的装置及其使用方法
CN116219142A (zh) * 2023-02-01 2023-06-06 高安市顺辉科技有限公司 一种钨镍合金加工用热处理设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919199A1 (de) * 1989-06-13 1990-12-20 Skf Gmbh Verfahren zur herstellung von waelzlagerelementen
DE4007852C1 (en) * 1990-03-12 1991-05-29 Aichelin Gmbh, 7015 Korntal-Muenchingen, De Withdrawal device in heat-treatment plant - has grip of parallel bars with rollers positioned between them
US5456773A (en) * 1992-03-27 1995-10-10 Heimsoth Verwaltungen Gmbh & Co. Kg Heat treatment process for metal articles
DE19647248A1 (de) * 1996-11-15 1998-05-20 Ald Aichelin Gmbh Werkstückträger zum Wärmebehandeln von Werkstücken, Vorrichtung zum Entnehmen von Werkstücken aus einem Rollenherdofen und Wärmebehandlungsanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE886013C (de) * 1951-12-18 1953-08-10 Siemens Ag Durchlaufofen und Verfahren zu seinem Betrieb
DE4401228C2 (de) * 1994-01-18 1996-03-21 Aichelin Gmbh Verfahren und Vorrichtung zum Abschrecken von Werkstücken

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919199A1 (de) * 1989-06-13 1990-12-20 Skf Gmbh Verfahren zur herstellung von waelzlagerelementen
DE4007852C1 (en) * 1990-03-12 1991-05-29 Aichelin Gmbh, 7015 Korntal-Muenchingen, De Withdrawal device in heat-treatment plant - has grip of parallel bars with rollers positioned between them
US5456773A (en) * 1992-03-27 1995-10-10 Heimsoth Verwaltungen Gmbh & Co. Kg Heat treatment process for metal articles
DE19647248A1 (de) * 1996-11-15 1998-05-20 Ald Aichelin Gmbh Werkstückträger zum Wärmebehandeln von Werkstücken, Vorrichtung zum Entnehmen von Werkstücken aus einem Rollenherdofen und Wärmebehandlungsanlage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008055477A3 (fr) * 2006-11-09 2008-11-27 Schaeffler Kg Procédé de production d'une bague de roulement, et bague de roulement correspondante
CN104313259A (zh) * 2014-11-22 2015-01-28 唐山亚捷机械有限公司 高铬轴承钢零件的马氏体、贝氏体等温盐浴淬火生产线
CN109252039A (zh) * 2017-07-14 2019-01-22 江苏持华轴承有限公司 一种连续热处理工序的装置及其使用方法
CN116219142A (zh) * 2023-02-01 2023-06-06 高安市顺辉科技有限公司 一种钨镍合金加工用热处理设备
CN116219142B (zh) * 2023-02-01 2023-09-15 高安市顺辉科技有限公司 一种钨镍合金加工用热处理设备

Also Published As

Publication number Publication date
DE19856191A1 (de) 2000-06-15
DE19856191C2 (de) 2001-02-15
EP1006202A3 (fr) 2003-08-06

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