EP0849367A1 - Installation for hardening metallic articles - Google Patents

Installation for hardening metallic articles Download PDF

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Publication number
EP0849367A1
EP0849367A1 EP97118581A EP97118581A EP0849367A1 EP 0849367 A1 EP0849367 A1 EP 0849367A1 EP 97118581 A EP97118581 A EP 97118581A EP 97118581 A EP97118581 A EP 97118581A EP 0849367 A1 EP0849367 A1 EP 0849367A1
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EP
European Patent Office
Prior art keywords
hardening
press
plates
roller
workpiece
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
Application number
EP97118581A
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German (de)
French (fr)
Other versions
EP0849367B1 (en
Inventor
Hans-Georg Bittner
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.)
Warmetechnik Heimsoth & Co KG GmbH
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Warmetechnik Heimsoth & Co KG GmbH
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Publication date
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Publication of EP0849367A1 publication Critical patent/EP0849367A1/en
Application granted granted Critical
Publication of EP0849367B1 publication Critical patent/EP0849367B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Definitions

  • the invention relates to a device for hardening of metallic goods, having a roller furnace for Austenitizing the good and a hardness press for that yet hot good.
  • They are devices for tempering metallic goods, especially known for hardening tool steels a furnace for austenitizing the material, a hardening press for the still hot goods and a tempering furnace for the purpose Have the hardness and structure of the goods.
  • a device for heat treatment is known: "Heat treatment of structural and tool steels", 3rd ed., Editor Hans Benninghoff, Sigma textbook series, 1978, p. 451 to 444, Ruhfuß, "heat treatment of ferrous materials", Verlag Stahl Eisen mbH, 1958, pp. 380 to 383 and 386.
  • the hardness press from a A plurality of pairs of press plates working together is formed, which at the end of the roller furnace next to the Roller conveyor are arranged one behind the other and that Bracket parts for the cross bracing of the between the goods located between the plates in Hardness position can be inserted, workpieces are free from distortion can be produced.
  • the figure shows the exit of a roller furnace, with 10 the individual roles are designated and 11 the Indicates the conveying direction of the roller conveyor. Usually would the individual workpieces are intended to be on the left front Leave the roller oven in the direction of arrow 11.
  • a push part 12 is provided which with the help of a working cylinder in the 16 designated directions can move.
  • This thrust part 12 serves first of all to remove the workpiece from the roller conveyor to promote the lower press plate 13. It is can be seen that several such push parts 12th one after the other in the direction of movement of the roller conveyor 11 can be arranged.
  • a corresponding stop 16 is located to the other side of the workpiece 20 above the lower press plate 13. In the embodiment shown the invention of the stop 16 via a stamp 14 in Direction of the arrows 15 pivoted. Also the Stop 16 has a thickness that is less than that too processing workpiece 20.
  • the hardening procedure is as follows:
  • the workpiece 20 is from the roller conveyor 10 on the Thrust member 12 brought into the position shown in the figure.
  • the Stop 16 is also in the position shown and ensures that the workpiece 20 does not have a intended position can be moved to the right.
  • the upper press plate not shown, is lowered and exercises together with the lower press plate 13 Pressure on the workpiece 20.
  • the stop parts 16 and 21 are fixed via working cylinders pressed against the workpiece 20, so that this no Can perform tensioning movements.
  • the stamp 14 with the stop part 16th pivoted away so that the workpiece 20, for example in Direction to the right can be seen.

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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)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

The apparatus used for hardening metal materials has a roller furnace to austenise the material, followed by a hardening press to act on it while still hot. The press (13) has a number of paired press plates, working together at the end of the furnace and near the roller path (10). The holders (12, 16) for the lateral clamping of the material (20) between the plates (13) are inserted between the plates in the hardening setting.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Härten von metallischem Gut, aufweisend einen Rollenofen zum Austenitisieren des Gutes und eine Härtepresse für das noch heiße Gut.The invention relates to a device for hardening of metallic goods, having a roller furnace for Austenitizing the good and a hardness press for that yet hot good.

Es ist bekannt (DE 81 09 001 U1), daß eine Vorrichtung zum verzugsarmen Härten von plattenformigen Stahlteilen einen Glühofen und eine Härtepresse aufweist, wobei die Härtepresse aus einer Auflagerplatte und einer Preßplatte gebildet ist und an den Ausgang des Glühofens herangefahren werden kann, um über Förderrollen die zu härtenden Teile aufzunehmen.It is known (DE 81 09 001 U1) that a device for low distortion hardening of plate-shaped steel parts Has annealing furnace and a hardening press, the Hardness press from a support plate and a press plate is formed and moved up to the exit of the annealing furnace can be used to convey the parts to be hardened via conveyor rollers to record.

Es sind Vorrichtungen zum Vergüten von metallischem Gut, insbesondere zum Härten von Werkzeugstählen bekannt, die 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 aufweisen. Eine derartige Vorrichtung zur Wärmebehandlung ist bekannt: "Wärmebehandlung der Bau- und Werkzeugstähle", 3. Aufl., Herausgeber Hans Benninghoff, Sigma Fachbuchreihe, 1978, S. 451 bis 444, Ruhfuß, "Wärmebehandlung der Eisenwerkstoffe", Verlag Stahl Eisen mbH, 1958, S. 380 bis 383 und 386.They are devices for tempering metallic goods, especially known for hardening tool steels a furnace for austenitizing the material, a hardening press for the still hot goods and a tempering furnace for the purpose Have the hardness and structure of the goods. Such a device for heat treatment is known: "Heat treatment of structural and tool steels", 3rd ed., Editor Hans Benninghoff, Sigma textbook series, 1978, p. 451 to 444, Ruhfuß, "heat treatment of ferrous materials", Verlag Stahl Eisen mbH, 1958, pp. 380 to 383 and 386.

Bei Werkstücken, die eine relativ geringe Dicke und beispielsweise einen festen Durchmesser haben, wie eine Kreissäge, kann das Härten unter einem Pressenplatten-Paar durchgeführt werden, ohne daß sich hier ein Verzug zeigt. Bei sehr langen Werkstücken, die neben einer relativ geringen Dicke auch eine geringe Breitenabmessung aufweisen, beispielsweise wie Langmesser und Führungsschienen, ist ein Verzug über die hohe Kante beim Pressen selbst bei relativ hohen Andruckkräften der Pressen praktisch unvermeidbar.For workpieces that have a relatively small thickness and for example, have a fixed diameter, such as one Circular saw, can harden under a pair of press plates be carried out without showing any delay. In the case of very long workpieces, which in addition to a relative small thickness also have a small width dimension, for example, like a long knife and guide rails, is a Distortion over the high edge when pressing even with relative high pressure forces of the presses practically unavoidable.

Hier nun setzt die vorliegende Erfindung an und will eine Vorrichtung der eingangs genannten Art so ausbilden, daß selbst im vorgenannten Sinne ungünstig dimensionierte Werkstücke verzugsfrei über die hohe Kante gehärtet werden können.This is where the present invention comes in and wants one Design the device of the type mentioned in such a way that even unfavorably dimensioned in the aforementioned sense Workpieces are hardened without warping over the high edge can.

Erreicht wird dies praktisch dadurch, daß während des Härtevorganges Querkräfte auf das Werkstück ausgeübt werden, so daß bei einer Vorrichtung der eingangs genannten Art, die dadurch charakterisiert ist, daß die Härtepresse aus einer Mehrzahl von zusammen wirkenden Pressenplatten-Paaren gebildet ist, die am Ende des Rollenofens neben der Rollenbahn hintereinander angeordnet sind und daß Halterungsteile für die Querverspannung des sich zwischen den Platten befindlichen Guts zwischen die Platten in Härtestellung einführbar sind, Werkstücke verzugsfrei hergestellt werden können.This is practically achieved by the fact that during the Lateral forces are exerted on the workpiece, so that in a device of the type mentioned, the is characterized in that the hardness press from a A plurality of pairs of press plates working together is formed, which at the end of the roller furnace next to the Roller conveyor are arranged one behind the other and that Bracket parts for the cross bracing of the between the goods located between the plates in Hardness position can be inserted, workpieces are free from distortion can be produced.

Die Erfindung wird nachstehend anhand der Zeichnung beispielsweise erläutert.The invention is described below with reference to the drawing for example explained.

Die einzige Figur der Zeichnung zeigt eine schaubildliche Darstellung der wesentlichen Teile der Vorrichtung gemäß der Erfindung.The only figure in the drawing shows a graphic Representation of the essential parts of the device according to the Invention.

In der Figur ist der Ausgang eines Rollenofens gezeigt, wobei mit 10 die einzelnen Rollen bezeichnet sind und 11 die Förderrichtung der Rollenbahn angibt. Normalerweise würden die einzelnen Werkstücke den links vorne gedachten Rollenofen in Richtung des Pfeiles 11 verlassen.The figure shows the exit of a roller furnace, with 10 the individual roles are designated and 11 the Indicates the conveying direction of the roller conveyor. Usually would the individual workpieces are intended to be on the left front Leave the roller oven in the direction of arrow 11.

Neben der Rollenbahn sind jedoch in der gleichen Erstreckung, wie die Rollenbahn, untere Pressenplatten 13 angeordnet, wobei in der Figur nur eine derartige Pressenplatte des vorderen Pressenplattenpaars gezeigt ist. Es ist selbstverständlich, daß rechts hinten sich in Schrägrichtung bei der gewählten Darstellung der Figur weitere untere Pressenplatten befinden können. Ebenfalls sind in der Figur die oberen Pressenplatten weggelassen worden, auch hier ist selbstverständlich, daß diese von oben her auf die Pressenplatten 13 gedrückt werden können, so daß sich ein dazwischen befindliches Werkstück 20 wie üblich unter Druck gehärtet werden kann. Die soweit beschriebene Vorrichtung entspricht dem Stand der Technik und würde bei dem gezeigten länglichen Werkstück 20 dazu führen, daß dieses sich über seine Länge verzieht.In addition to the roller conveyor, however, are in the same Extension, like the roller conveyor, lower press plates 13 arranged, only one such in the figure Press plate of the front pair of press plates is shown. It goes without saying that in the back right Oblique direction in the chosen representation of the figure further lower press plates can be located. Likewise the upper press plates are omitted in the figure has been taken for granted that this is from above forth can be pressed onto the press plates 13 so that there is a workpiece 20 in between as usual can be cured under pressure. The one described so far Device corresponds to the prior art and would the elongated workpiece 20 shown cause that this warps over its length.

Gemäß der Erfindung ist ein Schubteil 12 vorgesehen, der sich mit Hilfe eines Arbeitszylinders in den mit 16 bezeichneten Richtungen bewegen läßt. Dieser Schubteil 12 dient zunächst einmal dazu, das Werkstück von der Rollenbahn auf die untere Pressenplatte 13 zu fördern. Es ist ersichtlich, daß mehrere derartige Schubteile 12 hintereinander in Bewegungsrichtung der Rollenbahn 11 angeordnet sein können.According to the invention, a push part 12 is provided which with the help of a working cylinder in the 16 designated directions can move. This thrust part 12 serves first of all to remove the workpiece from the roller conveyor to promote the lower press plate 13. It is can be seen that several such push parts 12th one after the other in the direction of movement of the roller conveyor 11 can be arranged.

Am freien Ende des Schubteils 12 befindet sich ein an das Werkstück 20 angepaßter Anschlagteil 21, der lösbar an der Schubstange 12 befestigt werden kann und stets so dimensioniert ist, daß er eine geringere Höhe als das Werkstück 20 hat. Ein entsprechender Anschlag 16 befindet sich zur anderen Seite des Werkstücks 20 oberhalb der unteren Pressenplatte 13. Bei der gezeigten Ausführungsform der Erfindung wird der Anschlag 16 über einen Stempel 14 in Richtung der gezeigten Pfeile 15 verschwenkt. Auch der Anschlag 16 hat eine Dicke, die geringer ist als das zu verarbeitende Werkstück 20.At the free end of the thrust part 12 there is an on the Workpiece 20 adapted stop part 21, which is releasably attached to the Push rod 12 can be attached and always so is dimensioned that he is a lower height than that Workpiece 20 has. A corresponding stop 16 is located to the other side of the workpiece 20 above the lower press plate 13. In the embodiment shown the invention of the stop 16 via a stamp 14 in Direction of the arrows 15 pivoted. Also the Stop 16 has a thickness that is less than that too processing workpiece 20.

Beim Härten selbst wird wie folgt vorgegangen:The hardening procedure is as follows:

Das Werkstück 20 wird von der Rollenbahn 10 über den Schubteil 12 in die in der Figur gezeigte Lage gebracht. Der Anschlag 16 befindet sich ebenfalls in der gezeigten Lage und sorgt dafür, daß das Werkstück 20 nicht über eine vorgesehene Lage hinaus nach rechts bewegt werden kann. Sodann wird die nicht gezeigte obere Pressenplatte abgesenkt und übt zusammen mit der unteren Pressenplatte 13 einen Druck auf das Werkstück 20 aus. Während dieses Vorganges werden über Arbeitszylinder die Anschlagteile 16 und 21 fest an das Werkstück 20 angedrückt, so daß dieses keine Verspannungsbewegungen ausführen kann. Nach Beendigung des Härtevorganges wird der Stempel 14 mit dem Anschlagteil 16 weggeschwenkt, so daß das Werkstück 20 beispielsweise in Richtung nach rechts entnommen werden kann.The workpiece 20 is from the roller conveyor 10 on the Thrust member 12 brought into the position shown in the figure. Of the Stop 16 is also in the position shown and ensures that the workpiece 20 does not have a intended position can be moved to the right. Then the upper press plate, not shown, is lowered and exercises together with the lower press plate 13 Pressure on the workpiece 20. During this process the stop parts 16 and 21 are fixed via working cylinders pressed against the workpiece 20, so that this no Can perform tensioning movements. After completing the The hardening process is the stamp 14 with the stop part 16th pivoted away so that the workpiece 20, for example in Direction to the right can be seen.

Claims (1)

Vorrichtung zum Härten von metallischem Gut, aufweisend einen Rollenofen zum Austenitisieren des Gutes und eine Härtepresse für das noch heiße Gut, dadurch gekennzeichnet, daß die Härtepresse (13) aus einer Mehrzahl von zusammen wirkenden Pressenplatten-Paaren gebildet ist, die am Ende des Rollenofens neben der Rollenbahn (10) hintereinander angeordnet sind und daß Halterungsteile (12, 16) für die Querverspannung des sich zwischen den Platten (13) befindlichen Guts (20) zwischen die Platten in Härtestellung einführbar sind.Device for hardening metallic material, comprising a roller furnace for austenitizing the material and one Hardness press for the still hot product, characterized in that that the hardening press (13) is composed of a plurality of acting press plate pairs is formed, which at the end the roller oven next to the roller conveyor (10) one behind the other are arranged and that bracket parts (12, 16) for the Transverse tension between the plates (13) located goods (20) between the plates in the hardening position can be introduced.
EP97118581A 1996-12-20 1997-10-25 Installation for hardening metallic articles Expired - Lifetime EP0849367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653610A DE19653610C1 (en) 1996-12-20 1996-12-20 Apparatus for hardening metal materials
DE19653610 1996-12-20

Publications (2)

Publication Number Publication Date
EP0849367A1 true EP0849367A1 (en) 1998-06-24
EP0849367B1 EP0849367B1 (en) 2001-03-21

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EP97118581A Expired - Lifetime EP0849367B1 (en) 1996-12-20 1997-10-25 Installation for hardening metallic articles

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EP (1) EP0849367B1 (en)
AT (1) ATE199941T1 (en)
DE (2) DE19653610C1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1960772A1 (en) * 1968-12-09 1970-06-18 Caterpillar Tractor Co Quenching device working by means of pressing tools
DE8109001U1 (en) * 1981-03-27 1981-08-27 Thyssen Edelstahlwerke AG, 4000 Düsseldorf "DEVICE FOR LOW-DISTORING HARDENING OF STEEL PARTS"
EP0632137A1 (en) * 1993-05-19 1995-01-04 HEIMSOTH VERWALTUNGEN GmbH & CO. KG Beteiligungsgesellschaft Process for the thermal pretreatment of metallic articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1960772A1 (en) * 1968-12-09 1970-06-18 Caterpillar Tractor Co Quenching device working by means of pressing tools
DE8109001U1 (en) * 1981-03-27 1981-08-27 Thyssen Edelstahlwerke AG, 4000 Düsseldorf "DEVICE FOR LOW-DISTORING HARDENING OF STEEL PARTS"
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)

* Cited by examiner, † Cited by third party
Title
HANNS BENNINGHOFF: "Wärmebehandlung der Bau- und Werkzeugstähle", BAZ BUCHVERLAG, BASEL, CH, 3.AUFLAGE, 1978, XP002015629 *
HEINRICH RUHFUS: "WÄRMEBEHANDLUNG DER EISENWERKSTOFFE", VERLAG STAHLEISEN, DÜSSELDORF, DE, 1958, XP002015630 *
J. WÜNNING: "DIE WÄRMEBEHANDLUNG IN DER FERTIGUNGSLINIE MIT EINEM NEUARTIGEN ROLLENHERDOFEN", HÄRTEREI TECHNISCHE MITTEILUNGEN, vol. 45, no. 6, 1990, MÜNCHEN, DE, pages 325 - 329, XP000163038 *

Also Published As

Publication number Publication date
ATE199941T1 (en) 2001-04-15
DE19653610C1 (en) 1998-01-15
DE59703182D1 (en) 2001-04-26
EP0849367B1 (en) 2001-03-21

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