EP0728848B1 - Base for bell type furnaces - Google Patents
Base for bell type furnaces Download PDFInfo
- Publication number
- EP0728848B1 EP0728848B1 EP96890024A EP96890024A EP0728848B1 EP 0728848 B1 EP0728848 B1 EP 0728848B1 EP 96890024 A EP96890024 A EP 96890024A EP 96890024 A EP96890024 A EP 96890024A EP 0728848 B1 EP0728848 B1 EP 0728848B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- control unit
- frame part
- sheet metal
- filling part
- 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 - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 17
- 238000000137 annealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000002775 capsule Substances 0.000 claims description 5
- 210000002268 wool Anatomy 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims 2
- 238000000465 moulding Methods 0.000 claims 1
- 239000000945 filler Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- 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
- C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
-
- 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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
Definitions
- the invention relates to an annealing base for bell annealers with a coil of sheet metal, in particular stacked sheets, receiving, on the nozzle of a central fan dormant edition, one arranged below that Surrounding the fan axis, heat-insulating filler and the load from the diffuser through the filler transferring to a frame part lying on the foundation Support structure, the filler part made in sheet metal gas-tight encapsulated insulating wool or the like. consists.
- the annealing material on the support is over the annealing material and the base one up to the frame part Reached protective hood, one put through the fan then circulated shielding gas, mainly for avoidance of oxidation on the surface of the annealing material.
- the protective hood is then covered by a heating hood, their heating device, usually gas or oil burners or electric heating elements, the protective hood heated on the outside, which in turn then the protective gas and subsequently heated the annealing material. After done The heating hood is heat-treated by a cooling hood replaced and the batch cooled.
- the invention is therefore based on the object Eliminate deficiency and a glow plug at the beginning to create the type described, in which no cracks occur in the capsule forming the filling part.
- the invention solves this problem in that in the sheet forming the capsule of the filling part immediately beneath the diffuser an adapted lower surface molded ring significantly in excess of the sheet thickness is by two concentric, him with the frame part sheet metal cylinders connecting the support structure forms.
- the two concentric sheet metal cylinders mostly with the molded ring on the combustion chamber side are firmly welded from above with the same temperature as this one pressurized, all parts therefore dilate uniformly, so that there are no length differences or sliding movements can come between the individual parts.
- the two Sheet metal cylinder and the form ring are during heating by the expansion coefficients corresponding to the materials concerned enlarged in diameter and then shrink again during cooling without there is a risk of sweat cracks or the like. bring about. Since the insulating wool or the like contained in the filling part. is elastic, none occurs during these processes Opening between the metal parts and the insulation material, which transport heat from above into the deeper ones Base area to the foundation through natural gas flows enables.
- the lower edge the plate cylinder has cutouts and is only between welded these recesses to the frame part.
- a frame part 2 On the foundation 1 is a frame part 2, which in turn Filling parts 3 carries. On the filling parts 3 is the diffuser 4 of a central fan 5, the Leitapparat 4 in turn a support 6 for the annealing material, usually bundles of sheet metal. Over the entire glow plug is a glow hood 7 put.
- the guide device 4 To the load of the annealing material from the support 6 to the foundation 1, the guide device 4 is used first.
- the filling part 3 which consists of a gas-tight sheet metal capsule and filled with insulating wool 8 is for load transfer on the frame part 2 a support structure arranged.
- This support structure consists of one of the lower surfaces the nozzle 4 adapted in the sheet of the filler 3 embedded, relatively strong form ring 9, which by two concentric plate cylinders 10 with the Frame part 2 is connected, this sheet metal cylinder 10th both with the frame part 2 and with the form ring 9 are welded. From Fig. 2 it can be seen that the Sheet metal rings 10 have cutouts 11 at their lower edge and therefore only between these recesses 11 the frame part can be welded.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Outer Garments And Coats (AREA)
- Furnace Details (AREA)
Description
Die Erfindung betrifft einen Glühsockel für Haubenglühöfen mit einer das Glühgut, insbesondere gestapelte Blechbunde, aufnehmenden, auf dem Leitapparat eines zentralen Ventilators ruhenden Auflage, einem darunter angeordneten, die Ventilatorachse umgebenden, wärmeisolierenden Füllteil und mit einer die Last vom Leitapparat durch den Füllteil auf einen auf dem Fundament liegenden Rahmenteil übertragenden Stützkonstruktion, wobei der Füllteil aus in Blech gasdicht gekapselter Isolierwolle od.dgl. besteht.The invention relates to an annealing base for bell annealers with a coil of sheet metal, in particular stacked sheets, receiving, on the nozzle of a central fan dormant edition, one arranged below that Surrounding the fan axis, heat-insulating filler and the load from the diffuser through the filler transferring to a frame part lying on the foundation Support structure, the filler part made in sheet metal gas-tight encapsulated insulating wool or the like. consists.
Nach dem Aufsetzen des Glühgutes auf die Auflage wird über das Glühgut und den Sockel eine bis zum Rahmenteil reichende Schutzhaube gestülpt, die ein durch den Ventilator dann umgewälztes Schutzgas, hauptsächlich zur Vermeidung von Oxidationen an der Oberfläche des Glühgutes, enthält. Die Schutzhaube wird dann durch eine Heizhaube abgedeckt, deren Heizeinrichtung, in der Regel Gas- bzw. Ölbrenner oder elektrische Heizelemente, die Schutzhaube außenseitig erwärmt, die dann ihrerseits das Schutzgas und in weiterer Folge das Glühgut erwärmt. Nach erfolgter Wärmebehandlung wird die Heizhaube durch eine Kühlhaube ersetzt und die Charge abgekühlt. After placing the annealing material on the support is over the annealing material and the base one up to the frame part Reached protective hood, one put through the fan then circulated shielding gas, mainly for avoidance of oxidation on the surface of the annealing material. The protective hood is then covered by a heating hood, their heating device, usually gas or oil burners or electric heating elements, the protective hood heated on the outside, which in turn then the protective gas and subsequently heated the annealing material. After done The heating hood is heat-treated by a cooling hood replaced and the batch cooled.
Die zur Lastableitung des Glühgutgewichtes an das Fundament dienende Stützkonstruktion des Glühsockels besteht bisher meist aus einzelnen, an das Hüllblech angeschweißten, meist rohrförmigen Stützen, die im oberen Bereich Auflageelemente besitzen, die die bei der Erwärmung oder Abkühlung auftretenden Längenänderungen zwischen dem oberen Hüllblech und dem unteren Rahmenteil durch Gleitreibung oder Biegebeanspruchung der Stützen abfangen, wobei verhältnismäßig große Dilatationen bzw. Kontraktionen auftreten, da der Temperaturunterschied zwischen dem Leitapparat und dem Rahmenteil mehrere hundert Grad beträgt. Bei unsachgemäßer Konstruktion oder Verarbeitung kann es bereits nach kurzer Betriebszeit zu Rissen in der Blechkapsel kommen, so daß eine unerwünschte Vermischung des Schutzgases mit dem im Füllteil auf jeden Fall vorhandenen Gas, nämlich Luft bzw. Stickstoff, auftritt. Derartige Fehler kommen vor allem dadurch zustande, daß eine Relativbewegung an den Gleitflächen beeinträchtigt wird und dadurch Querkräfte in den Stützen auftreten, die zu Schweißrissen Anlaß geben können.The for transferring the weight of the annealing material to the foundation serving support structure of the glow socket so far mostly from individual welded to the cladding sheet, mostly tubular supports in the upper Area support elements that the at Warming or cooling changes in length between the upper cladding sheet and the lower frame part due to sliding friction or bending stress on the supports intercept, with relatively large dilations or Contractions occur because of the temperature difference between the nozzle and the frame part several hundred Degrees. In the event of improper construction or processing cracks can appear after a short period of operation come in the tin capsule, so that an undesirable mixing of the protective gas with that in the filler on each If there is any gas, namely air or nitrogen, occurs. The main reason for such errors is that a relative movement affects the sliding surfaces and thus lateral forces in the supports occur that can give rise to sweat cracks.
Somit liegt der Erfindung die Aufgabe zugrunde, diesen Mangel zu beseitigen und einen Glühsockel der eingangs geschilderten Art zu schaffen, bei dem keinerlei Risse in der den Füllteil bildenden Kapsel auftreten.The invention is therefore based on the object Eliminate deficiency and a glow plug at the beginning to create the type described, in which no cracks occur in the capsule forming the filling part.
Die Erfindung löst die gestellte Aufgabe dadurch, daß im die Kapsel des Füllteiles bildenden Blech unmittelbar unter dem Leitapparat ein dessen Unterfläche angepaßter, die Blechstärke wesentlich übersteigender Formring eingelassen ist, der durch zwei konzentrische, ihn mit dem Rahmenteil verbindende Blechzylinder die Stützkonstruktion bildet.The invention solves this problem in that in the sheet forming the capsule of the filling part immediately beneath the diffuser an adapted lower surface molded ring significantly in excess of the sheet thickness is by two concentric, him with the frame part sheet metal cylinders connecting the support structure forms.
Die zwei konzentrischen Blechzylinder, die meist mit dem glühraumseitigen Formring fest verschweißt sind, werden von oben her mit der gleichen Temperatur wie dieser beaufschlagt, alle Teile dilatieren daher gleichförmig, so daß es zu keinen Längendifferenzen bzw. Gleitbewegungen zwischen den einzelnen Teilen kommen kann. Die beiden Blechzylinder und der Formring werden bei der Erwärmung um die den betreffenden Werkstoffen entsprechenden Ausdehnungskoeffizienten in ihrem Durchmesser vergrößert und schrumpfen dann wieder während der Abkühlung, ohne daß die Gefahr besteht, Schweißrisse od.dgl. herbeizuführen. Da die im Füllteil enthaltene Isolierwolle od.dgl. elastisch ist, entsteht während dieser Vorgänge keine Öffnung zwischen den Metallteilen und dem Isolationsmaterial, die einen Wärmetransport von oben in den tieferen Sockelbereich zum Fundament hin durch natürliche Gasströmungen ermöglicht.The two concentric sheet metal cylinders, mostly with the molded ring on the combustion chamber side are firmly welded from above with the same temperature as this one pressurized, all parts therefore dilate uniformly, so that there are no length differences or sliding movements can come between the individual parts. The two Sheet metal cylinder and the form ring are during heating by the expansion coefficients corresponding to the materials concerned enlarged in diameter and then shrink again during cooling without there is a risk of sweat cracks or the like. bring about. Since the insulating wool or the like contained in the filling part. is elastic, none occurs during these processes Opening between the metal parts and the insulation material, which transport heat from above into the deeper ones Base area to the foundation through natural gas flows enables.
In weiterer Ausbildung der Erfindung weist der untere Rand der Blechzylinder Aussparungen auf und ist nur zwischen diesen Aussparungen mit dem Rahmenteil verschweißt. Dadurch wird die Wärmeleitung innerhalb des Blechringes von oben zum Rahmenteil wesentlich vermindert, da ja die Aussparungen eine solche Wärmeleitung verhindern.In a further embodiment of the invention, the lower edge the plate cylinder has cutouts and is only between welded these recesses to the frame part. Thereby the heat conduction within the sheet metal ring of Significantly reduced above to the frame part, since the recesses prevent such heat conduction.
In der Zeichnung ist der Erfindungsgegenstand beispielsweise
dargestellt, und zwar zeigen
Am Fundament 1 liegt ein Rahmenteil 2 auf, der seinerseits
Füllteile 3 trägt. Auf den Füllteilen 3 liegt der Leitapparat
4 eines zentralen Ventilators 5 auf, wobei der
Leitapparat 4 seinerseits eine Auflage 6 für das Glühgut,
in der Regel Blechbunde, trägt. Über den ganzen Glühsockel
ist eine Glühhaube 7 gestülpt. On the
Um die Last des Glühgutes von der Auflage 6 auf das Fundament
1 zu übertragen, dient zunächst der Leitapparat 4.
Im Füllteil 3, der aus einer gasdichten Blechkapsel besteht
und mit Isolierwolle 8 gefüllt ist, ist zur Lastübertragung
auf den Rahmenteil 2 eine Stützkonstruktion
angeordnet.To the load of the annealing material from the
Diese Stützkonstruktion besteht aus einem der Unterfläche
des Leitapparates 4 angepaßten, in das Blech des Füllteiles
3 eingelassenen, verhältnismäßig starken Formring
9, der durch zwei konzentrische Blechzylinder 10 mit dem
Rahmenteil 2 verbunden ist, wobei diese Blechzylinder 10
sowohl mit dem Rahmenteil 2 als auch mit dem Formring 9
verschweißt sind. Aus Fig. 2 ist ersichtlich, daß die
Blechringe 10 an ihrem unteren Rand Aussparungen 11 aufweisen
und daher nur zwischen diesen Aussparungen 11 mit
dem Rahmenteil verschweißt sein können.This support structure consists of one of the lower surfaces
the
Claims (2)
- A holder for hood type annealing furnaces comprising a support (6) resting on the control unit (4) of a central fan (5) and receiving the material for annealing, particularly stacked sheet-metal elements, a heat-insulating filling part (3) disposed under the support and surrounding the vertical fan shaft, and a supporting structure (9, 10) transferring the load from the control unit (4) through the filling part (3) to a frame part (2) resting on the foundation (1), the filling part (3) being made of insulating wool or the like encapsulated in gas-tight manner in sheet metal, characterised in that a moulding ring is inserted immediately under the control unit (4) into the sheet metal forming the capsule of the filling part (3), the ring (9) being adapted to the undersurface of the control unit and considerably thicker than the sheet metal, and constituting the supporting structure in the form of two concentric sheet-metal cylinders (10) which join the ring to the frame part (2).
- A holder according to claim 1, characterised in that the bottom edge of the sheet-metal cylinders (10) has recesses (11) and is welded to the frame part (2) only between the said recesses.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT337/95 | 1995-02-24 | ||
| AT33795 | 1995-02-24 | ||
| AT0033795A AT402508B (en) | 1995-02-24 | 1995-02-24 | GLOW BASE FOR DOME GLOVES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0728848A2 EP0728848A2 (en) | 1996-08-28 |
| EP0728848A3 EP0728848A3 (en) | 1996-10-23 |
| EP0728848B1 true EP0728848B1 (en) | 2001-04-25 |
Family
ID=3487914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96890024A Expired - Lifetime EP0728848B1 (en) | 1995-02-24 | 1996-02-22 | Base for bell type furnaces |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US5616297A (en) |
| EP (1) | EP0728848B1 (en) |
| JP (1) | JP3899141B2 (en) |
| KR (1) | KR100375213B1 (en) |
| CN (1) | CN1101926C (en) |
| AT (1) | AT402508B (en) |
| BR (1) | BR9600803A (en) |
| CA (1) | CA2169712C (en) |
| CZ (1) | CZ285630B6 (en) |
| DE (1) | DE59606815D1 (en) |
| ES (1) | ES2155928T3 (en) |
| IN (1) | IN185290B (en) |
| PL (1) | PL179461B1 (en) |
| ZA (1) | ZA961115B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501043B (en) * | 2011-10-10 | 2014-01-22 | 天津二十冶建设有限公司 | Special tool for mounting coil base of bell-type annealing furnace and method therefor |
| AT527037B1 (en) * | 2023-06-29 | 2024-10-15 | Ebner Ind Ofenbau | hood furnace |
| CN117265231B (en) * | 2023-09-13 | 2024-04-23 | 南通顺祥钢结构有限公司 | Heat treatment equipment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2504809A (en) * | 1945-10-26 | 1950-04-18 | Carnegie Illinois Steel Corp | Annealing stand construction |
| DE1204246B (en) * | 1955-10-24 | 1965-11-04 | Lee Wilson | Bell furnace for the heat treatment of rolled wires, rods or the like. |
| US3179394A (en) * | 1963-09-11 | 1965-04-20 | Wilson Eng Co Inc Lee | Solid seal for inner covers |
| US3554511A (en) * | 1969-01-13 | 1971-01-12 | Bethlehem Steel Corp | E furnace |
| DE3233815A1 (en) * | 1982-09-11 | 1984-03-15 | Btf-Edelstahlverarbeitung Gmbh & Co Kg, 5928 Laasphe | Protective shield for equipment for the heat treatment of workpieces |
| US4846675A (en) * | 1987-06-01 | 1989-07-11 | Worthington Industries, Inc. | Annealing furnace |
| US4813654A (en) * | 1987-11-09 | 1989-03-21 | Lee Wilson Engineering Company, Inc. | Annealing furnace base construction |
| CN2118961U (en) * | 1991-11-11 | 1992-10-14 | 哈尔滨工业窑炉联营公司 | Bell-jar annealing furnace |
| DE4212396C2 (en) * | 1992-04-13 | 2001-03-08 | Loi Thermprocess Gmbh | Bell annealing furnace |
| US5380378A (en) * | 1993-04-23 | 1995-01-10 | Gas Research Institute | Method and apparatus for batch coil annealing metal strip |
-
1995
- 1995-02-24 AT AT0033795A patent/AT402508B/en not_active IP Right Cessation
-
1996
- 1996-02-12 ZA ZA961115A patent/ZA961115B/en unknown
- 1996-02-15 IN IN274CA1996 patent/IN185290B/en unknown
- 1996-02-16 CA CA002169712A patent/CA2169712C/en not_active Expired - Fee Related
- 1996-02-22 ES ES96890024T patent/ES2155928T3/en not_active Expired - Lifetime
- 1996-02-22 DE DE59606815T patent/DE59606815D1/en not_active Expired - Lifetime
- 1996-02-22 US US08/604,056 patent/US5616297A/en not_active Expired - Lifetime
- 1996-02-22 EP EP96890024A patent/EP0728848B1/en not_active Expired - Lifetime
- 1996-02-23 BR BR9600803A patent/BR9600803A/en not_active IP Right Cessation
- 1996-02-23 CZ CZ96559A patent/CZ285630B6/en not_active IP Right Cessation
- 1996-02-23 PL PL96312910A patent/PL179461B1/en not_active IP Right Cessation
- 1996-02-24 CN CN96104045A patent/CN1101926C/en not_active Expired - Fee Related
- 1996-02-24 KR KR1019960004477A patent/KR100375213B1/en not_active IP Right Cessation
- 1996-02-26 JP JP03848096A patent/JP3899141B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2169712A1 (en) | 1996-08-25 |
| AT402508B (en) | 1997-06-25 |
| CZ285630B6 (en) | 1999-10-13 |
| PL179461B1 (en) | 2000-09-29 |
| JP3899141B2 (en) | 2007-03-28 |
| BR9600803A (en) | 1997-12-23 |
| ATA33795A (en) | 1996-10-15 |
| CN1171538A (en) | 1998-01-28 |
| KR960031947A (en) | 1996-09-17 |
| JPH08253806A (en) | 1996-10-01 |
| ES2155928T3 (en) | 2001-06-01 |
| EP0728848A2 (en) | 1996-08-28 |
| EP0728848A3 (en) | 1996-10-23 |
| KR100375213B1 (en) | 2003-11-14 |
| CA2169712C (en) | 2001-07-17 |
| CZ55996A3 (en) | 1996-09-11 |
| DE59606815D1 (en) | 2001-05-31 |
| ZA961115B (en) | 1996-12-17 |
| US5616297A (en) | 1997-04-01 |
| PL312910A1 (en) | 1996-09-02 |
| CN1101926C (en) | 2003-02-19 |
| IN185290B (en) | 2000-12-23 |
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