EP0219482B1 - Haubenofen - Google Patents

Haubenofen Download PDF

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Publication number
EP0219482B1
EP0219482B1 EP86870138A EP86870138A EP0219482B1 EP 0219482 B1 EP0219482 B1 EP 0219482B1 EP 86870138 A EP86870138 A EP 86870138A EP 86870138 A EP86870138 A EP 86870138A EP 0219482 B1 EP0219482 B1 EP 0219482B1
Authority
EP
European Patent Office
Prior art keywords
roof
sole
bell
furnace according
lateral wall
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.)
Expired
Application number
EP86870138A
Other languages
English (en)
French (fr)
Other versions
EP0219482A1 (de
Inventor
Ghislain Martelee
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.)
Cockerill Mechanical Industries SA
Original Assignee
Cockerill Mechanical Industries SA
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
Priority claimed from BE0/215675A external-priority patent/BE903363A/fr
Application filed by Cockerill Mechanical Industries SA filed Critical Cockerill Mechanical Industries SA
Priority to AT86870138T priority Critical patent/ATE40462T1/de
Publication of EP0219482A1 publication Critical patent/EP0219482A1/de
Application granted granted Critical
Publication of EP0219482B1 publication Critical patent/EP0219482B1/de
Expired legal-status Critical Current

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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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces

Definitions

  • the present invention relates to an electric bell furnace, of modular construction.
  • this furnace aims, among other things, to accelerate the normal cooling phase of a thermal cycle.
  • the normal cooling phase is very long and therefore immobilizes the oven for long periods. This is due to the thermal accumulation in very heavy rooms, the high thermal insulation of efficient ovens and, incidentally, the high thermal accumulation in the walls of the brick oven for example.
  • the oven according to the invention comprises a bell comprising a roof resting on a lifting device with jacks and a side wall suspended from the roof by means of tie rods provided with stops so that the roof can be raised relative to the side wall in order to provide an upper peripheral opening for the evacuation of the heat and so that the side wall can then be carried by the roof and be raised relative to the hearth of the oven in order to provide a peripheral opening lower for the introduction of fresh air inside the oven enclosure.
  • the oven comprises a bell 10 suspended from beams 1 and placed on a hearth 20 using an elevating device with jacks housed in the columns 30.
  • the bell 10 consists of a roof 11 suspended from the beams 1 and a side wall 12 suspended from the roof 11 by means of tie rods 3.
  • the roof 11 and the side wall 12 as well as the floor 20 consist of a set of 'modular units which make it possible to build ovens of appropriate dimensions and easily expand an installation as and when required.
  • the roof 11 rests on cylinder rods 32 housed in the columns 30 (FIG. 3) and the side wall 12 is fixed to the columns 30.
  • the cylinder rods 32 move under the action of the hydraulic cylinders 31 controlled from a control station (not shown in the drawings) by means of conduits 33 running along peripheral profiles 2.
  • Each vertical column 30 slides along a fixed inner tube 34 which is surmounted by a guide device 35 for the rod cylinder 32 and column 30 when the bell is lowered for placement on the hearth 20.
  • the side wall 12 is formed by a set of modular units 13, each of them consisting of a metal sheet 14 folded over its periphery to form an outer frame 15 and the inner face of which is coated with a thermal insulating material 16.
  • FIG. 4 shows the way in which the side wall 12 is connected to the roof 11.
  • the upper modular units of the wall 12 are fitted with stirrups 4 carrying tubes 5 in which tie rods 3 fixed to the roof 11.
  • the tie rods 3 are provided with stops 6 which can drive the stirrups 4 and the wall 12 when the tie rods 3, themselves driven by the roof, have made a certain displacement of axial translation.
  • Figure 4 is shown the situation in which the roof has been raised by the rods of cylinders 32 until the stirrups 4 have come against the stops 6.
  • the roof 11 is then moved away from the upper edge of the side wall 12 by a peripheral opening 40.
  • Figure 5 shows in elevation the position of the bell when the oven is closed.
  • the side wall 12 then rests on the floor 20 and the roof 11 is placed on the upper edge of the side wall 12. The oven is thus ready for a heating phase.
  • the jacks 31 are actuated automatically from the control station in two stages. During the first step, the jacks 31 move the rods 32 upwards and lift the roof 11 which thus deviates from the side wall 12 of the bell, letting the hot air escape from the bell through the 'upper peripheral opening 40 ( Figure 6). To scale this exhaust of hot air and therefore scale the decrease in temperature of the oven, the jacks are actuated to raise and lower the roof 11 successively several times. As long as the stroke of the jack rods 32 does not exceed the length of the tie rods 3 up to their stops 6, the roof 11 moves away from the side wall 12 while the latter remains resting on the floor 20.
  • the stops 6 drive the stirrups 4 which lift the side wall 12 (FIG. 7). This then follows the movement of the roof 11 and lifts with it, letting cold air enter the oven enclosure through the lower peripheral opening 50. During this step, the upper peripheral opening 40 enters the roof 11 and the side wall 12 remains so that the air is continuously renewed inside the oven, which accelerates the cooling thereof.
  • the sole 20 is formed by a set of modular units 21 (FIG. 8).
  • Each modular unit 21 (FIG. 9) comprises a metal base 22 formed of a sheet folded over its sides, a mattress of thermal insulating material 23 and a cover sheet 24.
  • the base sheets 22 and cover 24 are pierced with openings through which pass metallic sections 25 serving as a workpiece holder.
  • each modular unit has two workpiece carriers.
  • Each profile 25 rests on the ground 20 by means of a support plate 26, thus producing a support piece with a large support surface while having a small section.
  • the profiles 25 protrude from the cover sheet 24 and the projecting part is coated in a thermal insulating material 27.
  • the outer insulating sleeve is surrounded by coiled irons 28.
  • the workpiece carriers have only a small heat loss by conductivity to the ground and their large bearing surface allows them to take up heavy concentrated loads (several tonnes).
  • the hearth according to the invention makes it possible to produce an oven not integrated into the foundations and easily movable from one hall to the other.

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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)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (9)

1. Haubenofen mit einer auf einer Sohle aufruhenden isolierenden Haube, bei dem die Haube (10) ein auf einer Zylinder-Hebeeinrichtung (12) aufruhendes Dach (11) und eine Seitenwand (12) aufweist, die an dem Dach (11) mittels Zugstangen (3) aufgehängt ist, die derart mit Anschlägen (6) versehen sind, daß das Dach (11) relativ zur Seitenwand (12) angehoben werden kann, um eine obere peripherische Öffnung (40) zum Abzug der Wärme vorzusehen, und daß die Seitenwand (12) anschließend vom Dach (11) mitgenommen und relativ zur Sohle (20) angehoben werden kann, um eine untere peripherische Öffnung (50) zur Zufuhr von Frischluft in das Innere des Ofenraumes vorzusehen.
2. Ofen nach Anspruch 1, dadurch gekennzeichnet, daß die Zylinder-Hebeeinrichtung vertikale Säulen (30) aufweist, wobei jede Säule ein äußeres Rohr, an dem Elemente der Seitenwand (12) befestigt sind, ein als Führung dienendes inneres festes Rohr (34), an dem das äußere Rohr (30) gleiten kann, und einen im Inneren des inneren festen Rohres (34) gelagerten Hydraulikzylinder (31) aufweist, wobei sich die Stange (32) dieses Zylinders axial in das Innere des festen Rohres (34) erstreckt und als Auflager für das Dach (11) dient.
3. Ofen nach Anspruch 2, dadurch gekennzeichnet, daß das obere Ende des festen Rohres (34) mit einer Führungseinrichtung (35) für die Zylinderstange (34) und/oder für die vertikale Säule (30) beim Absenken der Haube (10) versehen ist, um diese auf ihren Platz auf der Sohle (20) zu setzen.
4. Ofen nach Anspruch 1, dadurch gekennzeichnet, daß die Seitenwand (12) aus einem Satz modularer Einheiten (13) gebildet ist, wobei jede modulare Einheit aus einem Metallblech (14) besteht, das umgebogen ist, um einen Rahmen (15) zu bilden, und das auf seiner Innenseite mit wärmeisolierendem Material (16) ausgekleidet ist, das die Innenfläche der modularen Einheit und der Seitenwand des Ofens bildet.
5. Ofen nach Anspruch 1, dadurch gekennzeichnet, daß das Dach (11) aus einem Satz modularer Einheiten gebildet ist.
6. Ofen nach Anspruch 5, dadurch gekennzeichnet, daß jede modulare Einheit aus einem Metallblech (14) besteht, das umgebogen ist, um einen Rahmen (15) zu bilden, und das auf seiner Innenseite mit einem wärmeisolierenden Material (16) ausgekleidet ist.
7. Ofen nach Anspruch 1, dadurch gekennzeichnet, daß die Sohle (20) aus einem Satz modularer Einheiten (21) gebildet ist, wobei jede modulare Einheit aus einem Basisblech (22), einer die Oberseite des Basisbleches bedeckenden Matte aus wärmeisolierendem Material (23) und einem Deckblech (24) besteht.
8. Ofen nach Anspruch 1 oder 7, dadurch gekennzeichnet, daß die Sohle (20) Stückgutträger (25) aufweist, die die Sohle (22, 23, 24) durchqueren und auf dem Boden mit einer großen Auflagefläche (26) aufruhen, wobei jeder Stückgutträger von der oberen Fläche (24) der Sohle vorspringt und der vorspringende Teil mit einem wärmeisolierenden Material (27) umhüllt ist.
9. Ofen nach Anspruch 8, dadurch gekennzeichnet, daß jeder Stückgutträger aus einem Metallprofil geringen Querschnitts (25) besteht.
EP86870138A 1985-10-03 1986-09-29 Haubenofen Expired EP0219482B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86870138T ATE40462T1 (de) 1985-10-03 1986-09-29 Haubenofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/215675A BE903363A (fr) 1985-10-03 1985-10-03 Four cloche
BE215675 1985-10-03

Publications (2)

Publication Number Publication Date
EP0219482A1 EP0219482A1 (de) 1987-04-22
EP0219482B1 true EP0219482B1 (de) 1989-01-25

Family

ID=3843935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86870138A Expired EP0219482B1 (de) 1985-10-03 1986-09-29 Haubenofen

Country Status (3)

Country Link
EP (1) EP0219482B1 (de)
AT (1) ATE40462T1 (de)
DE (1) DE3661967D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040137A (zh) * 2010-12-31 2011-05-04 江苏丰东热技术股份有限公司 一种热处理炉升降机导向机构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU35285A1 (de) *
DE602838C (de) * 1932-12-08 1934-09-18 Bbc Brown Boveri & Cie Elektrisch beheizter Blankgluehofen
US3063693A (en) * 1960-10-12 1962-11-13 Kay Brunner Steel Products Inc Annealing oven

Also Published As

Publication number Publication date
DE3661967D1 (en) 1989-03-02
ATE40462T1 (de) 1989-02-15
EP0219482A1 (de) 1987-04-22

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