EP0555199A2 - Four à chambre sous vide pour le traitement thermique de pièces d'oeuvres métalliques - Google Patents

Four à chambre sous vide pour le traitement thermique de pièces d'oeuvres métalliques Download PDF

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Publication number
EP0555199A2
EP0555199A2 EP93890013A EP93890013A EP0555199A2 EP 0555199 A2 EP0555199 A2 EP 0555199A2 EP 93890013 A EP93890013 A EP 93890013A EP 93890013 A EP93890013 A EP 93890013A EP 0555199 A2 EP0555199 A2 EP 0555199A2
Authority
EP
European Patent Office
Prior art keywords
furnace
vacuum chamber
heating chamber
openings
cooling gas
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Withdrawn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
EP93890013A
Other languages
German (de)
English (en)
Other versions
EP0555199A3 (en
Inventor
Harald Berger
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 Industrieofenbau GmbH
Original Assignee
Aichelin Industrieofenbau GmbH
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 Aichelin Industrieofenbau GmbH filed Critical Aichelin Industrieofenbau GmbH
Publication of EP0555199A2 publication Critical patent/EP0555199A2/fr
Publication of EP0555199A3 publication Critical patent/EP0555199A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F27B2005/161—Gas inflow or outflow
    • F27B2005/162—Gas inflow or outflow through closable or non-closable openings of the chamber walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F27B2005/166—Means to circulate the atmosphere
    • F27B2005/167—Means to circulate the atmosphere the atmosphere being recirculated through the treatment chamber by a turbine

Definitions

  • the invention relates to a vacuum chamber furnace for the heat treatment of metallic workpieces, with a heating chamber located in a housing, the walls of which have closable openings for the passage of a cooling gas flow.
  • Such ovens are known in both horizontal and vertical designs. Horizontal ovens, chamber and bogie hearth ovens can be used universally. The area of application for long tools and components is limited by the usable height of the systems, which often only allow horizontal loading. For workpieces with a large L / D ratio, e.g. Thin broaches, drills, etc., and warp-sensitive components often require vertical, hanging charging.
  • the invention therefore has set itself the goal of creating a vacuum chamber furnace of the type mentioned, which essentially has the advantages of both previously known types of furnace, without having to accept the disadvantages. This is achieved in that the furnace is pivotally mounted and a pivot drive is arranged for pivoting from a horizontal to a vertical position and vice versa.
  • An oven designed according to the invention is used in many applications in a horizontal position. However, if there is a need to treat workpieces or components that need to be charged in a hanging position, the rotary drive is activated and the furnace is brought into the vertical position. After the treatment of these workpieces has been carried out, the furnace can be pivoted back again.
  • a particularly expedient embodiment of the invention is characterized in that the swivel drive has hydraulic cylinders which, on the one hand, engage the housing and, on the other hand, in a pit which receives the lower part of the vertically pivoted furnace.
  • the swivel drive has hydraulic cylinders which, on the one hand, engage the housing and, on the other hand, in a pit which receives the lower part of the vertically pivoted furnace.
  • an electric motor or pneumatic swivel drive would also be possible.
  • bearing blocks are advantageously provided on the edge of the pit, in which axles projecting from the housing are mounted on rollers.
  • bearing saddles are advantageously arranged at a distance from the bearing blocks, into which bolts or the like arranged on the furnace engage.
  • closable openings are arranged both for the passage of a cooling gas flow directed transversely to the heating chamber and for a longitudinal flow, these openings being able to be actuated alternately. This makes it possible to adapt the cooling gas flow to the particular position of the furnace.
  • a controller can e.g. be provided by means of touch switches, light barriers or the like, which reverses the openings when the furnace is pivoted into a different position.
  • At least one of the axes is expediently designed as a rotary feedthrough for a pump suction line and / or supply lines.
  • FIG. 1 shows a view of an oven according to the invention in the horizontal position
  • Fig. 2 the floor plan belonging to Fig. 1
  • Figure 3 is a view of the furnace in a lowered position
  • Fig. 4 schematically shows a section through the furnace in a horizontal position
  • Fig. 5 shows such a section through the furnace in a lowered, i.e. vertical position.
  • a furnace for the heat treatment of metallic workpieces has a housing 1 which can be closed by a door 2.
  • a hydraulic cylinder 3 indicated by its center line in FIG. 2 is provided for actuating the door 2.
  • the housing 1 In the vicinity of the door 2, the housing 1 is provided with axles 4 protruding in opposite directions, which are mounted on rollers 5 in bearing blocks 6.
  • the bearing blocks 6 are set up at the edge of a pit 7, the depth of which is dimensioned such that the furnace, rotating about the axes 4, can be pivoted into the pit 7.
  • hydraulic cylinders 8 are provided which act on both sides of the housing 1 and on the other hand on bearing blocks 9 which are anchored in the pit 7.
  • An electric motor or pneumatic swivel drive is also possible.
  • bearing saddles 10 are set up at the edge of the pit.
  • 10 bolts or the like engage in these bearing saddles (not shown), which are movably attached to the housing 1 and secure the furnace in the horizontal position.
  • the actuation of the bolts or the like can be hydraulic, pneumatic or elec done trically.
  • the pump suction line 12 is guided through an axis 4.
  • heating chamber 13 in the housing 1, the walls of which are provided with closable openings 14 and 15, respectively.
  • a fan 17 driven by a motor 16 circulates a cooling gas which is cooled by a heat exchanger 18.
  • the openings 14, 15 can be closed alternately. In the horizontal position (FIG. 4), the openings 14 are opened and the openings 15 are closed; batch C is therefore flowed through transversely to heating chamber 13. In the vertical position of the furnace, the openings 14 are closed and the openings 15 are opened, so that the charge C is flowed through parallel to the heating chamber axis.
  • the switchover is advantageously carried out automatically via sensors (not shown) that determine the position of the furnace, e.g. Touch switches, light barriers or the like ..
  • the invention is in no way limited to ovens with a round cross-section, but rather an angular cross-section is also possible.
  • the batch usable space can also be round or angular, as can the storage, the swivel drive, the energy supply, etc. can be changed many times.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Tunnel Furnaces (AREA)
EP19930890013 1992-02-03 1993-02-02 Vacuum chamber oven for the thermal treatment of metal work pieces Withdrawn EP0555199A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT175/92 1992-02-03
AT17592A AT400363B (de) 1992-02-03 1992-02-03 Vakuum-kammerofen zur wärmebehandlung von metallischen werkstücken

Publications (2)

Publication Number Publication Date
EP0555199A2 true EP0555199A2 (fr) 1993-08-11
EP0555199A3 EP0555199A3 (en) 1994-05-25

Family

ID=3483558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930890013 Withdrawn EP0555199A3 (en) 1992-02-03 1993-02-02 Vacuum chamber oven for the thermal treatment of metal work pieces

Country Status (2)

Country Link
EP (1) EP0555199A3 (fr)
AT (1) AT400363B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023102850A1 (de) * 2023-02-06 2024-08-08 Iva Schmetz Gmbh Vakuumofen zur Wärmebehandlung von metallischen Werkstücken

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE569300C (de) * 1931-02-14 1933-02-01 Demag Elektrostahl G M B H Kippbarer Glueh-, Haerte- oder Schmelzofen
DE1112305B (de) * 1957-08-19 1961-08-03 Rudolf Kellermann Dipl Ing Vorrichtung zum Waermebehandeln von Metallen durch Gluehen und Abschrecken
DE1889104U (de) * 1963-09-21 1964-03-12 Bbc Brown Boveri & Cie Elektrisch beheizter tiegelofen, insbesondere induktionsofen.
FR1547417A (fr) * 1967-05-22 1968-11-29 Heurtey Sa Four vertical à circulation de particules
DE3208574A1 (de) * 1982-03-10 1983-09-22 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden "vakuum-schachtofen"
DE3215509A1 (de) * 1982-04-26 1983-10-27 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Vakuum-kammerofen
DE3224971A1 (de) * 1982-07-03 1984-01-05 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Vakuum-schachtofen
DE3526433C1 (de) * 1985-07-24 1989-11-23 Otto Junker Gmbh, 5107 Simmerath Gasdichter Ofen zum Einschmelzen von Metall
AT393138B (de) * 1990-01-29 1991-08-26 Herbert Hofmann Ing He Retortenofen

Also Published As

Publication number Publication date
ATA17592A (de) 1995-04-15
EP0555199A3 (en) 1994-05-25
AT400363B (de) 1995-12-27

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