EP0753587A1 - Plant for hardening and tempering metallic articles - Google Patents
Plant for hardening and tempering metallic articles Download PDFInfo
- Publication number
- EP0753587A1 EP0753587A1 EP96110951A EP96110951A EP0753587A1 EP 0753587 A1 EP0753587 A1 EP 0753587A1 EP 96110951 A EP96110951 A EP 96110951A EP 96110951 A EP96110951 A EP 96110951A EP 0753587 A1 EP0753587 A1 EP 0753587A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- furnace
- tempering
- goods
- hardening
- cooling
- 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
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
-
- 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
- C21D1/673—Quenching devices for die 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
Definitions
- the invention relates to a device for tempering metallic goods, in particular for tempering tool steels, comprising a furnace for austenitizing the goods, a hardening press for the still hot goods and a tempering furnace for adjusting the hardness and structure of the goods.
- a device for heat treatment is known: "Heat treatment of structural and tool steels", 3rd ed., Publisher Hans Benninghoff, Sigma series of books, 1978, pp. 451 to 444, Ruhfus, "heat treatment of iron materials", Verlag Stahl Eisen mbH, 1958, pp. 380 to 383 and 386.
- the invention in particular wants to eliminate these disadvantages and therefore proposes a device that starts from A device of the type mentioned at the outset is characterized in that the tempering furnace is designed as a continuous roller furnace with a preheating area and temperature-maintaining zone and that cooling presses are arranged at the outlet of the roller furnace for the purpose of temperature-controlled cooling of the goods.
- the tempering machine according to the present invention can on the one hand reduce the starting times to a few minutes and on the other hand each individual piece can be aligned without this leading to additional work processes.
- the device according to the invention can be used to achieve the same hardness values and, moreover, to provide parts which are much better aligned.
- the single figure of the drawing shows a schematic longitudinal cross-sectional view of a tempering machine according to the present invention.
- the actual hardening furnace is designated by 10, it has an input region 11 and a preheating zone 12 and an austenitizing region 13. After leaving the furnace 10, the material reaches the hardening press 20, which works discontinuously. In this press, the goods are slowly and selectively cooled and straightened at the same time.
- the material reaches the inlet 34 of a tempering furnace 30 from the hardening press.
- the tempering furnace 30 has a preheating stage 31 and a temperature holding stage 32 and is also equipped with straightening presses 33 in its interior. This means that after the goods have passed the holding stage, they are kept in the straightening press 33 in the furnace for a corresponding period of time under a certain pressure and a certain temperature.
- the material is then removed from the furnace 30 and, while still warm, cooling presses 40 can be supplied which are located in the immediate vicinity of the outlet of the furnace 30 and cool the material in a defined manner.
- a roller conveyor passing through the two furnaces is provided, so that the device operates continuously except for the pressing and straightening processes.
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)
- Tunnel Furnaces (AREA)
- Forging (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Vergüten von metallischem Gut, insbesondere zum Anlassen von Werkzeugstählen, aufweisend einen Ofen zum Austenitisieren des Gutes, eine Härtepresse für das noch heiße Gut sowie einen Anlaßofen zwecks Einstellung der Härte und des Gefüges des Gutes. Eine derartige Vorrichtung zur Wärmebehandlung ist bekannt: "Wärmebehandlung der Bau- und Werkzeugstähle", 3. Aufl., Herausgeber Hans Benninghoff, Sigma Fachbuchreihe, 1978, S. 451 bis 444, Ruhfus, "Wärmebehandlung der Eisenwerkstoffe", Verlag Stahl Eisen mbH, 1958, S. 380 bis 383 und 386.The invention relates to a device for tempering metallic goods, in particular for tempering tool steels, comprising a furnace for austenitizing the goods, a hardening press for the still hot goods and a tempering furnace for adjusting the hardness and structure of the goods. Such a device for heat treatment is known: "Heat treatment of structural and tool steels", 3rd ed., Publisher Hans Benninghoff, Sigma series of books, 1978, pp. 451 to 444, Ruhfus, "heat treatment of iron materials", Verlag Stahl Eisen mbH, 1958, pp. 380 to 383 and 386.
Üblicherweise werden lufthärtende Stähle sowie Werkzeugstähle nach dem Härtevorgang wieder angelassen. Die Anlaßtemperatur wird nach gewünschter Endhärte ausgewählt. Das Anlassen dient einerseits dem Einstellen der exakten Härte und des gewünschten Gefüges und andererseits auch als Richtprozeß. Bei bekannten Verfahren werden daher die einzelnen Teile in Stapeln zwischen 10 bis 100 Stück miteinander verspannt und anschließend zwischen drei bis zehn Stunden angelassen.Air-hardening steels and tool steels are usually tempered again after the hardening process. The tempering temperature is selected according to the desired final hardness. The tempering serves on the one hand to set the exact hardness and the desired structure and on the other hand also as a straightening process. In known methods, the individual parts are therefore clamped together in stacks of between 10 and 100 pieces and then left on for between three and ten hours.
Es hat sich hierbei gezeigt, daß bei einem derartigen Vergütungsvorgang eine Reihe von Hilfstätigkeiten durchgeführt werden müssen, die zeitraubend sind. Hierzu gehört vor allen Dingen das Verspannen der einzelnen Teile und das spätere Entnehmen aus dem Stapel. Auch ist ein Anlaßvorgang im Bereich von mehreren Stunden aus zeitlichen Gründen nicht erwünscht.It has been shown here that a number of auxiliary activities which are time-consuming have to be carried out in the case of such a compensation process. Above all, this includes bracing the individual parts and later removing them from the stack. A starting process in the range of several hours is also undesirable for reasons of time.
Die Erfindung will insbesondere diese Nachteile beseitigen und schlägt daher eine Vorrichtung vor, die ausgehend von einer Vorrichtung der eingangs genannten Art dadurch charakterisiert ist, daR der Anlaßofen als kontinuierlicher Rollenofen mit Vorwärmbereich und Temperaturhaltezone ausgebildet ist und daR am Ausgang des Rollenofens Kühlpressen zwecks temperaturgesteuerter Abkühlung des Gutes angeordnet sind.The invention in particular wants to eliminate these disadvantages and therefore proposes a device that starts from A device of the type mentioned at the outset is characterized in that the tempering furnace is designed as a continuous roller furnace with a preheating area and temperature-maintaining zone and that cooling presses are arranged at the outlet of the roller furnace for the purpose of temperature-controlled cooling of the goods.
Es ist zu erkennen, daR bei der Vergütungsmaschine gemäß der vorliegenden Erfindung einerseits die Anlaßzeiten auf einige Minuten herabgesetzt werden können und andererseits jedes einzelne Stück für sich ausgerichtet werden kann, ohne daß dies zu zusätzlichen Arbeitsvorgängen führt. Man kann im Vergleich mit den Ergebnissen bekannter Verfahren mit Hilfe der Vorrichtung gemäß der Erfindung zu den gleichen Härtewerten gelangen und darüber hinaus wesentlich besser ausgerichtete Teile zur Verfügung stellen.It can be seen that the tempering machine according to the present invention can on the one hand reduce the starting times to a few minutes and on the other hand each individual piece can be aligned without this leading to additional work processes. In comparison with the results of known methods, the device according to the invention can be used to achieve the same hardness values and, moreover, to provide parts which are much better aligned.
Es liegt im Rahmen der Erfindung, das alleinige Anlassen ohne Härteofen und ohne Härtepresse durchzuführen. Auch können erfindungsgemäß Werkstücke sowohl vergütet als auch nur angelassen werden.It is within the scope of the invention to carry out the sole annealing without a hardening furnace and without a hardening press. Workpieces according to the invention can also be both quenched and tempered.
Die Erfindung wird nachstehend an Hand der Zeichnung beispielsweise erläutert.The invention is explained below with reference to the drawing, for example.
Die einzige Figur der Zeichnung zeigt eine schematische Längsquerschnittsansicht einer Vergütungsmaschine gemäß der vorliegenden Erfindung.The single figure of the drawing shows a schematic longitudinal cross-sectional view of a tempering machine according to the present invention.
In der Figur ist mit 10 der eigentliche Härteofen bezeichnet, er hat einen Eingabebereich 11 und eine Vorwärmzone 12 und einen Austenitisierungsbereich 13. Nach Verlassen des Ofens 10 gelangt das Gut zu der Härtepresse 20, die diskontinuierlich arbeitet. In dieser Presse wird das Gut langsam und gezielt abgekühlt und gleichzeitig gerichtet.In the figure, the actual hardening furnace is designated by 10, it has an
Von der Härtepresse gelangt das Gut zum Einlauf 34 eines Anlaßofens 30. Der Anlaßofen 30 hat eine Vorwärmstufe 31 sowie eine Temperaturhaltestufe 32 und ist darüber hinaus noch in seinem Ofeninnenraum mit Richtpressen 33 ausgestattet. Dies bedeutet, daß das Gut, nachdem es die Haltestufe passiert hat, für eine entsprechende Zeitspanne unter einem bestimmten Druck und einer bestimmten Temperatur in der Richtpresse 33 im Ofen gehalten wird. Anschließend wird das Material dem Ofen 30 entnommen und kann in noch warmem Zustand Kühlpressen 40 zugeführt werden, die sich in unmittelbarer Nähe des Auslasses des Ofens 30 befinden und das Gut in definierter Weise abkühlen.The material reaches the
Bei der Vorrichtung gemäß der Erfindung ist eine durch die beiden Öfen durchlaufende Rollenbahn vorgesehen, so daß die Vorrichtung bis auf die Preß- und Richtvorgänge kontinuierlich arbeitet.In the device according to the invention, a roller conveyor passing through the two furnaces is provided, so that the device operates continuously except for the pressing and straightening processes.
Es besteht die Möglichkeit, das Material nach dem Verlassen der Kühlpressen 40 der weiteren Bearbeitung zuzuführen oder noch einmal erneut zum Einlaß 34 des Ofens 30 zurückzuführen, so daß ein weiterer Anlaßvorgang durchgeführt werden kann. Es ist weiterhin möglich, das Gut, wenn es den Ofen 30 verläßt, direkt zum Einlaß 34 des Ofens zurückzuführen, anstatt es zu den Kühlpressen 40 zu geben.It is possible to feed the material for further processing after leaving the cooling presses 40 or to return it again to the
Als Beispiel für Produktionsdaten werden folgende Angaben gemacht:
Werkstoff 1.2003, 75 Cr1 - φ 420 mm x 3,2 mm
Material 1.2003, 75 Cr1 - φ 420 mm x 3.2 mm
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19525342 | 1995-07-12 | ||
DE19525342A DE19525342C1 (en) | 1995-07-12 | 1995-07-12 | Device for tempering metallic material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0753587A1 true EP0753587A1 (en) | 1997-01-15 |
EP0753587B1 EP0753587B1 (en) | 2002-05-08 |
Family
ID=7766610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96110951A Expired - Lifetime EP0753587B1 (en) | 1995-07-12 | 1996-07-06 | Plant for hardening and tempering metallic articles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0753587B1 (en) |
AT (1) | ATE217355T1 (en) |
DE (2) | DE19525342C1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0984071A1 (en) * | 1998-09-03 | 2000-03-08 | Wärmetechnik Heimsoth GmbH & Co. KG | Use of copper alloys for cooled press plates |
EP1191111A1 (en) * | 2000-09-18 | 2002-03-27 | J:son Härdteknik AB | A method and an apparatus for press tempering |
FR2827874A1 (en) * | 2001-07-27 | 2003-01-31 | Usinor | Fabrication of steel components used for production of sub-frame components involves cutting a piece from a steel strip with a given composition, reheating the piece above its austenitizing temperature and anvil tempering |
CN110527814A (en) * | 2019-10-12 | 2019-12-03 | 大连汇程铝业有限公司 | A kind of aluminum alloy pre-stretching cut deal roller-bottom type glowing furnace control method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20016367U1 (en) | 2000-09-21 | 2000-12-21 | Skf Gmbh, 97421 Schweinfurt | Tempering furnace |
DE102008036237B3 (en) * | 2008-08-02 | 2010-01-28 | GMT Gesellschaft für metallurgische Technologie- und Softwareentwicklung mbH | Method and plant for inline forming, tempering and straightening rod-shaped metal parts |
DE102016219761A1 (en) * | 2016-10-11 | 2018-04-12 | Volkswagen Aktiengesellschaft | Method for producing a hot-formed part |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE412608C (en) * | 1922-09-03 | 1925-05-28 | Koll & Cie G M B H | Process for tempering and straightening (tensioning) saw blades, planer knives and similar tools |
DE887051C (en) * | 1944-06-25 | 1953-08-20 | Siemens Ag | Device for tempering thin sheets |
JPS59129718A (en) * | 1983-01-14 | 1984-07-26 | Sankyo Seiki Mfg Co Ltd | Continuous press hardening and transferring device |
EP0632137A1 (en) * | 1993-05-19 | 1995-01-04 | HEIMSOTH VERWALTUNGEN GmbH & CO. KG Beteiligungsgesellschaft | Process for the thermal pretreatment of metallic articles |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018566C2 (en) * | 1990-06-09 | 1997-04-24 | Nold Ernst Dr | Process for changing the shape of tempering, case hardening or precipitation hardening materials |
-
1995
- 1995-07-12 DE DE19525342A patent/DE19525342C1/en not_active Expired - Fee Related
-
1996
- 1996-07-06 EP EP96110951A patent/EP0753587B1/en not_active Expired - Lifetime
- 1996-07-06 AT AT96110951T patent/ATE217355T1/en not_active IP Right Cessation
- 1996-07-06 DE DE59609179T patent/DE59609179D1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE412608C (en) * | 1922-09-03 | 1925-05-28 | Koll & Cie G M B H | Process for tempering and straightening (tensioning) saw blades, planer knives and similar tools |
DE887051C (en) * | 1944-06-25 | 1953-08-20 | Siemens Ag | Device for tempering thin sheets |
JPS59129718A (en) * | 1983-01-14 | 1984-07-26 | Sankyo Seiki Mfg Co Ltd | Continuous press hardening and transferring device |
EP0632137A1 (en) * | 1993-05-19 | 1995-01-04 | HEIMSOTH VERWALTUNGEN GmbH & CO. KG Beteiligungsgesellschaft | Process for the thermal pretreatment of metallic articles |
Non-Patent Citations (3)
Title |
---|
HANNS BENNINGHOFF: "Wärmebehandlung der Bau- und Werkzeugstähle", 1978, BAZ BUCHVERLAG, BASEL , CH 3. AUFLAGE, XP002015629 * |
HEINRICH RUHFUS: "WÄRMEBEHANDLUNG DER EISENWERKSTOFFE", 1958, VERLAG STAHLEISEN, DÜSSELDORF , DE, XP002015630 * |
PATENT ABSTRACTS OF JAPAN vol. 008, no. 251 (C - 252) 16 November 1984 (1984-11-16) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0984071A1 (en) * | 1998-09-03 | 2000-03-08 | Wärmetechnik Heimsoth GmbH & Co. KG | Use of copper alloys for cooled press plates |
EP1191111A1 (en) * | 2000-09-18 | 2002-03-27 | J:son Härdteknik AB | A method and an apparatus for press tempering |
FR2827874A1 (en) * | 2001-07-27 | 2003-01-31 | Usinor | Fabrication of steel components used for production of sub-frame components involves cutting a piece from a steel strip with a given composition, reheating the piece above its austenitizing temperature and anvil tempering |
CN110527814A (en) * | 2019-10-12 | 2019-12-03 | 大连汇程铝业有限公司 | A kind of aluminum alloy pre-stretching cut deal roller-bottom type glowing furnace control method |
Also Published As
Publication number | Publication date |
---|---|
EP0753587B1 (en) | 2002-05-08 |
DE19525342C1 (en) | 1997-03-20 |
DE59609179D1 (en) | 2002-06-13 |
ATE217355T1 (en) | 2002-05-15 |
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