EP1361287A2 - Vorrichtung zur Behandlung von metallischen Werkstücken mit Kühlgas - Google Patents
Vorrichtung zur Behandlung von metallischen Werkstücken mit Kühlgas Download PDFInfo
- Publication number
- EP1361287A2 EP1361287A2 EP03003948A EP03003948A EP1361287A2 EP 1361287 A2 EP1361287 A2 EP 1361287A2 EP 03003948 A EP03003948 A EP 03003948A EP 03003948 A EP03003948 A EP 03003948A EP 1361287 A2 EP1361287 A2 EP 1361287A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- workpieces
- cooling gas
- blower
- fan
- 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.)
- Granted
Links
Images
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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous 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
- 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
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
Definitions
- the invention relates to a device for treating metallic Workpieces with cooling gas, with a housing with an opening for Inserting and removing the workpieces using a cooling gas source the blower-conveyed cooling gas, which is passed through a heat exchanger is fed to the workpieces and with a workpiece carrier.
- Vacuum furnaces for plasma carburizing metallic are known Workpieces using a carbon-containing gas, for example Methane or propane.
- a carbon-containing gas for example Methane or propane.
- the carbonaceous Process gas passed into the furnace chamber and an electric field on the Batch of workpiece placed. This is followed by the hardening Cooling of the batch by an inflow through out of nozzles on the Batch of cooling gas escaping, with the cooling gas in particular Helium has proven.
- a vacuum shaft furnace is known (DE 32 08 574 A1) with a device for cooling the heat-treated batch by means of a gas flow that has openings through the interior of the preferably cylindrical heating chamber is performed and outside the heating chamber in the closed furnace housing by a Gas blower is circulated through a gas cooler, being for a vertical flow in the heating chamber in the floor and in the ceiling closable openings and for a horizontal flow opposite points in the side wall of the heating chamber closable openings over their entire height are arranged.
- cover plates covering all openings provided each with the openings in the side walls congruent openings included and by half Opening division are movable.
- a vacuum furnace for plasma carburizing is also known metallic workpieces (EP 0 535 319 B1) with an electrical one Heating device, a vacuum pump for generating a vacuum in the heating chamber, as well as gas inlet openings, by means of which one Cooling gas conveyed by the fan and passed through a heat exchanger the batch is supplied, the leading the cooling gas Gas inlet ports are placed in the heating chamber and onto the batch are aligned.
- the nozzles designed as gas inlet openings are arranged on all sides around the heating chamber and on the front, the front nozzles for the axial introduction of the cooling gas in serve the heating chamber.
- the present invention has for its object to provide a device for treating metallic workpieces with cooling gas, which avoids the disadvantages of known furnaces and which very compact design - with a small ratio of chamber volume to batch volume - enables rapid flow reversal and with mirror-symmetrical flow conditions after the flow reversal.
- the device should be single-walled and allow a high heat transfer coefficient on all workpieces within the batch at the beginning of the quenching phase, a small amount of quenching gas per Require quenching process and allow operation with particularly short cycle times.
- the device should be designed so that it allows controlled quenching - ie with variable intensity - and can be docked to existing furnaces for carburizing, so that several simple furnaces can be operated with a single device - without a heat exchanger and cooling gas blower - which costs and save space.
- this object is achieved by a device with a housing for inserting and removing the workpieces, with a Cooling gas source by means of the blower-promoted and above Heat exchanger-guided cooling gas is supplied to the workpieces a workpiece carrier with the workpiece carrier on both sides arranged, extending vertically and parallel to each other, the Workpieces separating from side spaces with openings provided support plates and with above and / or below the Workpieces held between the heat exchangers and with blower motors provided on both sides of the housing horizontal and at right angles to the housing axis in the side rooms extending shafts, which with the shafts in fan housings revolving fan wheels near the inner walls of the housing provided and separated from the carrier plates by air baffles are, which are kept parallel and each by the fan housing extend at a distance from the support plates and with the Carrier plates on both sides of the workpiece batch two each vertically extending shafts for guiding the cooling gas flow form, each at the upper and lower ends of the two air baffle
- the invention allows a wide variety of design options; one of them is in the attached drawing, which is a device schematically shows in cross section.
- the device consists of a cylindrical, single-walled Housing 3, one end of which is firmly closed with a cover and the other end by means of a door or a slider lockable and otherwise designed and dimensioned so that the in heated and carburized workpiece batch 4 in a separate furnace can be transferred into the housing 3 of the device without a additional transport device is required for this.
- a Workpiece carrier 5 in the form of a perforated or with openings provided plate on which the batch 4 rests.
- strongly dimensioned carrier plates 6, 7 are arranged on which the workpiece carrier 5 is held and between which Heat exchangers 8, 9 are located.
- blower motors 10, 11 Motor shafts sealingly passed through the wall of the housing 3 are, whereby the two motor shafts are aligned and extend horizontally.
- the blower housings 12, 13 themselves are each firmly connected to the housing 3 and each hold on Face of an air baffle 14, 15 which is parallel and at a distance the respective adjacent carrier plate 6 and 7 extends and with this forms a shaft 16 or 17.
- Air baffles 14, 15 are reversing flaps 18, 19, 20, 21, respectively stored, these are dimensioned and stored so that they each with their free ends either with the neighboring ones Carrier plates 6 or 7 correspond or rest on them or but in a - about 80 ° - pivoted position on the Hit the inside wall of the housing 3.
- Reversing flaps 19, 20 pivoted so that their free ends on the abut the upper edges of the support plates 6, 7 and the shafts 16, 17 to close up.
- the two at the bottom of the Air baffles 14, 15 are mounted reversing flaps 18, 21 on the other hand with their free ends on the inner wall of the housing 3 and cause that in the area 24 below the Heat exchanger 9 entering cooling gas in the direction of the arrow from below in the shafts 16, 17 enter, for which the lower parts of the Carrier plates 6, 7 are provided with openings 22, 23. That in the Shafts 16, 17 upward flowing cooling gas enters the central Intake openings of the fan housing 12, 13 and then back out into area 25 above the top Pressed heat exchanger 8 and then flows through the Heat exchanger 8 on the workpiece batch 4 and from this through the Heat exchanger 9 again in the area 24.
- the four reversing flaps 18, 19, 20, 21 in their respective other position pivoted.
- the carrier plates 6, 7 are expediently on their batch 4 facing side with a mirror layer or out a material with a high reflection coefficient, the Sheets themselves have a low heat capacity.
- the radiation the batch edge areas against the cold wall reduces what minimizes the warpage and the uniformity of the Hardness distribution improved.
- the motor shafts at an alternative embodiment does not seal through the wall of the Housing 3 are passed, but the housing of the motors 10, 11 themselves are designed to be pressure-resistant, so that a Pressure change across the shaft bushings inside the Housing 3 is excluded.
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)
- Furnace Details (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Wärmebehandlungsprozesses, nämlich das Aufheizen und Aufkohlen der Charge, verglichen mit der zweiten Phase, nämlich dem Härteprozeß, vergleichsweise lange dauert liegt der vorliegenden Erfindung die Aufgabe zugrunde eine Vorrichtung zur Behandlung metallischer Werkstücke mit Kühlgas zu schaffen, die die Nachteile bekannter Öfen vermeidet und die bei sehr kompaktem Aufbau - bei kleinem Verhältnis von Kammervolumen zu Chargenvolumen - eine rasche Strömungsumkehr ermöglicht und bei der spiegelsymmetrische Strömungsverhältnisse nach der Strömungsumkehr vorliegen. Darüber hinaus soll die Vorrichtung einwandig ausgebildet sein und schon zu Beginn der Abschreckphase einen hohen Wärmeübergangskoeffizienten an allen Werkstücken innerhalb der Charge ermöglichen, eine geringe Menge Abschreckgas pro
Abschreckvorgang benötigen und einen Betrieb mit besonders kurzen Taktzeiten gestatten. Schließlich soll die Vorrichtung so konzipiert sein, daß sie eine geregelte Abschreckung - d.h. mit variabler Intensität - ermöglicht und an vorhandene Öfen zum Aufkohlen andockbar ist, so daß mit einer einzigen Vorrichtung mehrere einfache Öfen - ohne Wärmetauscher und Kühlgasgebläse - betrieben werden können, was Kosten und Platz einspart.
- 3
- Gehäuse
- 4
- Werkstücke, Charge
- 5
- Werkstückträger
- 6
- Trägerblech
- 7
- Trägerblech
- 8
- Wärmetauscher
- 9
- Wärmetauscher
- 10
- Gebläsemotor
- 11
- Gebläsemotor
- 12
- Gebläsegehäuse
- 13
- Gebläsegehäuse
- 14
- Luftleitblech
- 15
- Luftleitblech
- 16
- Schacht
- 17
- Schacht
- 18
- Reversierklappe
- 19
- Reversierklappe
- 20
- Reversierklappe
- 21
- Reversierklappe
- 22
- Öffnung
- 23
- Öffnung
- 24
- Bereich unterhalb des unteren Wärmetauschers
- 25
- Bereich oberhalb des oberen Wärmetauschers
- 26
- Schacht
- 27
- Schacht
Claims (2)
- Vorrichtung zur Behandlung metallischer Werkstücke mit Kühlgas mit einem zylindrischen Gehäuse (3) mit einer Öffnung zum Ein- und Ausbringen der Werkstücke (4) mit einer Kühlgasquelle mittels der Gebläse-gefördertes und über Wärmetauscher (8, 9) geführtes Kühlgas den Werkstücken (4) zugeführt wird und mit einem Werkstückträger (5) mit beiderseits des Werkstückträgers (5) angeordneten, sich vertikal und parallel zueinander erstreckenden, die Werkstücke (4) von Seitenräumen abtrennenden mit Öffnungen (22, 23) versehenen Trägerblechen (6, 7) und mit oberhalb und / oder unterhalb der Werkstücke (4) zwischen den Trägerblechen (6, 7) gehaltenen Wärmetauschern (8, 9) und mit beiderseits des Gehäuses (3) angeordneten Gebläsemotoren (10,11) mit sich horizontal und rechtwinklig zur Gehäuselängsachse in die Seitenräume erstreckenden Wellen, wobei die mit den Wellen im Gebläsegehäuse (12, 13) umlaufenden Gebläseräder jeweils nahe der Gehäuseinnenwand vorgesehen und von den Trägerblechen (6, 7) durch Luftleitbleche (14, 15) getrennt sind, die sich jeweils von den Gebläsegehäusen (12, 13) gehalten parallel und mit Abstand zu den Trägerblechen (6, 7) erstrecken und mit den Trägerblechen (6, 7) jeweils beiderseits der Werkstückcharge (4) zwei sich vertikal erstreckende Schächte (16, 17 bzw. 26, 27) für die Führung des Kühlgasstroms bilden, wobei jeweils an den oberen und an den unteren Enden der beiden Luftleitbleche (14, 15) Reversierklappen (18, 19, 20, 21) gelagert sind die je nach Stellung dichtend an die Trägerbleche (6, 7) oder an die Gehäuseinnenwand anschlagen.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Gebläsemotore (10,11) außerhalb und die Gebläsegehäuse (12, 13) innerhalb des Gehäuses (3) gehalten sind, wobei der Gebläseeinlaß jeweils in einen sich vertikal erstreckenden Schacht (16, 17) einmündet und der Gebläseauslaß in den dem Schacht (16 bzw. 17) benachbarten von der Gehäuseinnenwand und einem Luftleitblech (14 bzw. 15) begrenzten Raum.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10210952 | 2002-03-13 | ||
DE10210952A DE10210952B4 (de) | 2002-03-13 | 2002-03-13 | Vorrichtung zur Behandlung von metallischen Werkstücken mit Kühlgas |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1361287A2 true EP1361287A2 (de) | 2003-11-12 |
EP1361287A3 EP1361287A3 (de) | 2004-11-03 |
EP1361287B1 EP1361287B1 (de) | 2006-04-19 |
Family
ID=27815604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03003948A Expired - Lifetime EP1361287B1 (de) | 2002-03-13 | 2003-02-22 | Vorrichtung zur Behandlung von metallischen Werkstücken mit Kühlgas |
Country Status (5)
Country | Link |
---|---|
US (1) | US6913449B2 (de) |
EP (1) | EP1361287B1 (de) |
AT (1) | ATE323783T1 (de) |
DE (2) | DE10210952B4 (de) |
ES (1) | ES2262914T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006042538A1 (de) * | 2004-10-22 | 2006-04-27 | Ald Vacuum Technologies Gmbh | Verfahren zum verzugsarmen einsatzhärten von metallischen bauteilen |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7531769B2 (en) * | 2006-06-13 | 2009-05-12 | Guy Smith | Carbon fiber composite muffle |
JP4458079B2 (ja) * | 2006-09-27 | 2010-04-28 | 株式会社Ihi | 真空浸炭処理装置 |
JP4458107B2 (ja) * | 2007-03-09 | 2010-04-28 | 株式会社Ihi | 真空浸炭処理方法及び真空浸炭処理装置 |
DE102009000201B4 (de) | 2009-01-14 | 2018-06-21 | Robert Bosch Gmbh | Chargiergestell sowie Abschreckvorrichtung mit Chargiergestell |
FR2981665B1 (fr) | 2011-10-21 | 2013-11-01 | Ecm Technologies | Cellule de trempe |
JP6596703B2 (ja) * | 2015-03-04 | 2019-10-30 | 株式会社Ihi | 多室型熱処理装置 |
JP6338314B2 (ja) | 2015-05-26 | 2018-06-06 | 株式会社Ihi | 熱処理装置 |
DE102015011504A1 (de) | 2015-09-09 | 2017-03-09 | Ipsen International Gmbh | Vorrichtung zur Behandlung von metallischen Werkstücken mit Kühlgas |
CN106048162A (zh) * | 2016-07-28 | 2016-10-26 | 上海先越冶金技术股份有限公司 | 一种冷室高压气淬的结构 |
KR101909794B1 (ko) * | 2016-12-29 | 2018-10-18 | 정원기 | 담금질 장치 |
DE102018220304B3 (de) * | 2018-11-27 | 2019-10-31 | Audi Ag | Abschreckvorrichtung mit Chargiergestell und Chargiergestell |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278421A (en) * | 1978-10-14 | 1981-07-14 | Ipsen Industries International Gesellschaft Mit Beschrankter Haftung | Industrial furnaces for the heat treatment of metallic workpieces |
DE3208574A1 (de) * | 1982-03-10 | 1983-09-22 | Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden | "vakuum-schachtofen" |
DE3224971A1 (de) * | 1982-07-03 | 1984-01-05 | Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden | Vakuum-schachtofen |
US4610435A (en) * | 1983-12-23 | 1986-09-09 | Ipsen Industries International Gmbh | Industrial furnace for the thermal treatment of metal workpieces |
US4906182A (en) * | 1988-08-25 | 1990-03-06 | Abar Ipsen Industries, Inc. | Gas cooling system for processing furnace |
DE10038782C1 (de) * | 2000-08-09 | 2001-09-06 | Ald Vacuum Techn Ag | Verfahren und Vorrichtung zum Abkühlen, insbesondere zum Abschrecken und Härten von metallischen Werkstücken |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1204662A (fr) * | 1958-05-19 | 1960-01-27 | Creusot Forges Ateliers | Installation de trempe au gaz soufflé et au brouillard d'un liquide |
USH777H (en) * | 1987-05-19 | 1990-05-01 | The United States Of America As Represented By The Secretary Of The Air Force | Method for jet gas impingement quenching |
US5121903A (en) * | 1991-03-11 | 1992-06-16 | Vacuum Furnace Systems Corporation | Quenching arrangement for a furnace |
DE4128422C2 (de) * | 1991-08-27 | 1994-04-21 | Schneider Geb Loegel | Vorrichtung und Verwendung der Vorrichtung zum Abtragen von Material |
-
2002
- 2002-03-13 DE DE10210952A patent/DE10210952B4/de not_active Expired - Fee Related
-
2003
- 2003-02-22 AT AT03003948T patent/ATE323783T1/de not_active IP Right Cessation
- 2003-02-22 DE DE50303007T patent/DE50303007D1/de not_active Expired - Lifetime
- 2003-02-22 ES ES03003948T patent/ES2262914T3/es not_active Expired - Lifetime
- 2003-02-22 EP EP03003948A patent/EP1361287B1/de not_active Expired - Lifetime
- 2003-03-06 US US10/382,708 patent/US6913449B2/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278421A (en) * | 1978-10-14 | 1981-07-14 | Ipsen Industries International Gesellschaft Mit Beschrankter Haftung | Industrial furnaces for the heat treatment of metallic workpieces |
DE3208574A1 (de) * | 1982-03-10 | 1983-09-22 | Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden | "vakuum-schachtofen" |
DE3224971A1 (de) * | 1982-07-03 | 1984-01-05 | Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden | Vakuum-schachtofen |
US4610435A (en) * | 1983-12-23 | 1986-09-09 | Ipsen Industries International Gmbh | Industrial furnace for the thermal treatment of metal workpieces |
US4906182A (en) * | 1988-08-25 | 1990-03-06 | Abar Ipsen Industries, Inc. | Gas cooling system for processing furnace |
DE10038782C1 (de) * | 2000-08-09 | 2001-09-06 | Ald Vacuum Techn Ag | Verfahren und Vorrichtung zum Abkühlen, insbesondere zum Abschrecken und Härten von metallischen Werkstücken |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006042538A1 (de) * | 2004-10-22 | 2006-04-27 | Ald Vacuum Technologies Gmbh | Verfahren zum verzugsarmen einsatzhärten von metallischen bauteilen |
Also Published As
Publication number | Publication date |
---|---|
EP1361287B1 (de) | 2006-04-19 |
US6913449B2 (en) | 2005-07-05 |
EP1361287A3 (de) | 2004-11-03 |
DE50303007D1 (de) | 2006-05-24 |
ES2262914T3 (es) | 2006-12-01 |
US20030175130A1 (en) | 2003-09-18 |
ATE323783T1 (de) | 2006-05-15 |
DE10210952A1 (de) | 2006-01-12 |
DE10210952B4 (de) | 2007-02-15 |
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