DE603811C - Process for conveying sheet metal through continuously operating glow ovens - Google Patents

Process for conveying sheet metal through continuously operating glow ovens

Info

Publication number
DE603811C
DE603811C DEA67215D DEA0067215D DE603811C DE 603811 C DE603811 C DE 603811C DE A67215 D DEA67215 D DE A67215D DE A0067215 D DEA0067215 D DE A0067215D DE 603811 C DE603811 C DE 603811C
Authority
DE
Germany
Prior art keywords
sheet metal
ovens
conveying sheet
continuously operating
sheets
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
DEA67215D
Other languages
German (de)
Inventor
Dr-Ing Hans Georg Lindner
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.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Priority to DEA67215D priority Critical patent/DE603811C/en
Application granted granted Critical
Publication of DE603811C publication Critical patent/DE603811C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/062Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
    • F27B9/063Resistor heating, e.g. with resistors also emitting IR rays

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Description

Verfahren zum Fördern von Blechen durch fortlaufend arbeitende Glühöfen Bei dem normalen Glühen von Blechen wird eine möglichst kurze Erwärmungszeit (es genügen oft wenige Sekunden) angestrebt, der eine verhältnismäßig lange Abkühlzeit von mehreren Minuten gegenüb-,rsteht. Die kurze Aufheizzeit ist- wünschenswert, um in einer kurzen Ofenzone möglichst viele Bleche einzeln oder in kleinen Stapeln zu erhitzen. Die lange Abkühlzeit ist dadurch bedingt, daß jede Härte- oder Abschreckwirkung an den Blechen und die Gefahr des Verzunderns zuverlässig vermieden werden muß.Process for conveying sheet metal through continuously operating annealing furnaces In the normal annealing of sheet metal, the shortest possible heating time (es A few seconds are often sufficient), which has a relatively long cooling time of several minutes. The short heating-up time is desirable in order to use as many trays as possible individually or in small stacks in a short oven zone to heat. The long cooling time is due to the fact that there is any hardening or quenching effect on the sheets and the risk of scaling must be reliably avoided.

Bei den bisher bekannten, fortlaufendarbeitenden Blechglühöfen mit Förderung des Gutes durch quer zur Gutrichtung liegende, gleichmäßig von außen angetriebene Rollen waren diese Bedingungen nur -durch eitle sehr ,große Länge der Kühlkammern erfüIlbar, weil die Bleche einzeln oder in den gleichen kleinen Stapeln, in denen sie die Heizzone durchwandern, auch den Kühlraum durchlaufen.In the previously known, continuously operating sheet metal annealing furnaces with Conveyance of the goods through transversely to the direction of the goods, evenly driven from the outside These conditions were only responsible for the very, great length of the cooling chambers can be fulfilled because the sheets are individually or in the same small stacks in which they wander through the heating zone, also through the cold room.

Nach der Erfindung soll nun die Kühlkammer möglichst kurz gestaltet werden, indem die Durchgangsgeschwindigkeit des Glühgutes in der Kühlkammer gegenüber der in der Heizkammer verringert wird. Erreicht wird dies dadurch, daß die Förderrollen des Kühlraumes mit geringerer Umfangsgeschwindigkeit laufen als die der Aufheizzone, derart, daß sich die Bleche, die üi der Heizzone einzeln hinter einanderliegen, im Kühlraum selbsttätig auf den Rollen aufstapehi. Falls bereits von Anfang an kleine Stapel in den Ofen geschickt werden, erhöhen sich die Stapel beim Übergang auf die Rollen geringerer Umfangsgeschwindigkeit. Damit diese Stapelung sich ohne Störung im Ofen durchführen läßt, empfiehlt es sich, die Rollen geringerer Umfangsgeschwindigkeit etwas tiefer zu lagern als die andern. Selbstverständlich können auch mehr als zwei Geschwindigkeiten für die Laufrollen zweckmäßig sein. Besondere Bedeutung hat diese Einrichtung bei Öfen, durch welche zwecks Wärmerückgewinnung zwei Gutbahnen entgegengesetzt hindurchgehen.According to the invention, the cooling chamber should now be made as short as possible be compared to the rate of passage of the material to be annealed in the cooling chamber which is reduced in the heating chamber. This is achieved in that the conveyor rollers of the cooling room run at a lower peripheral speed than that of the heating zone, in such a way that the sheets that are individually behind each other in the heating zone, stapehi automatically on the rollers in the cold room. If small from the start Stacks are sent to the oven, the stacks will increase as they pass to the Rolls with lower peripheral speed. So that this stacking can be done without disturbance can be carried out in the oven, it is advisable to use the rollers at a lower peripheral speed to be stored a little deeper than the others. Of course, more than two can also be used Speeds for the rollers should be appropriate. This is of particular importance Equipment in ovens, through which two good webs opposed for the purpose of heat recovery go through.

In manchen Fällen empfiehlt es sich, zur Verbesserung der Blechaufstapelung die Rollen, auf denen die Bleche aufgestapelt werden, und die Rollen, die dann die Blechstapel weiter durch den Ofen fördern, derart anzutreiben, daß sie während des Stapelvorganges stillstehen und daß dann, wenn die Blech in hinreichender Höhe aufgestapelt sind, die Rollen wieder kurzzeitig in Bewegung gesetzt werden, den neuen Stapel wegbefördern und Platz für den nächsten Stapel frei machen.In some cases it is advisable to improve the stacking of sheets the rollers on which the trays are stacked and the rollers that then the Sheet metal stack continue to promote through the furnace, to drive so that they during the Stacking process stand still and that when the sheet is stacked at a sufficient height are, the reels are set in motion again briefly, the new stack move away and free up space for the next stack.

Zwei Ausführungsbeispiele sind in der Zeichnung in Abb. r und Abb. z im Längsschnitt dargestellt. Der für den fortlaufenden Betrieb -bestimmte Blechglühofen besteht in bekannter Weise aus der Vorwärmkammer a, der Glühkammer b und der Abkühllzammer c. Das Glühgut, im vorliegenden Falle die Blechtafeln d, oder auch einzelne Blechstapel werden durch von außen angetriebene Rollen e, ei, e2 durch den Ofen geleitet. Um nun die Kühlkammer c in ihrer Länge nach Möglichkeit kurz zu halten, werden die Rollen e2 .der Kühlkammer c mit einer geringeren Umfangsgeschwindigkeit angetrieben als die. Rollen ei der Heizkammer b. Hierdurch ergibt sich die Möglichkeit, daß sich die in der Heizkammer b einzeln hintereinanderliegenden Bleche d im Kühlraum c selbsttätig auf den Rollen e2 aufstapeln und ihn in Stapeln -durch--wandern. Hat man von Anfang an den Ofen mit kleineren Stapeln beschickt, so werden diese in der Abkühlzone c sich weiter erhöhen. Um Platz für die Stapel in der Kühlzone c zu gewinnen, kann man die Rollen e2 in der Kühlzone c etwas tiefer lagern (Abt. i) oder sie in ihrem Durchmesser verkleinern (Abt. 2).Two embodiments are shown in the drawing in Fig.r and Fig. z shown in longitudinal section. The one for continuous operation -specific sheet metal annealing furnace consists in a known manner from the preheating chamber a, the Annealing chamber b and the cooling chamber c. The annealing material, in the present case the sheet metal d, or individual stacks of sheet metal are driven by externally driven rollers e, ei, e2 passed through the furnace. To now the cooling chamber c in its length if possible To keep it short, the rollers e2. of the cooling chamber c with a lower peripheral speed driven than that. Rolling the heating chamber b. This makes it possible to that the sheets d lying individually one behind the other in the heating chamber b are in the cooling chamber c automatically stack on rolls e2 and walk through it in stacks. Has If you load the furnace with smaller stacks from the beginning, these will be in the Cooling zone c increase further. To gain space for the stacks in cooling zone c, you can store the rolls e2 a little lower in the cooling zone c (section i) or in reduce their diameter (Section 2).

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zum Fördern von Blechen durch fortlaufend arbeitende Glühöfen mit Heiz- und Kühlzone, dadurch gekennzeichnet, daß die einzelnen Bleche die Heizzone mit größerer Geschwindigkeit durchlaufen als die Kühlzone, derart, daß sie sich am Anfang der Kühlzone stapeln. PATENT CLAIMS: i. Process for conveying sheet metal through continuously working annealing furnaces with heating and cooling zone, characterized in that the individual Trays pass through the heating zone at a higher speed than the cooling zone, in such a way that that they are stacked at the beginning of the cooling zone. 2. Verfahren nach Anspruch i unter Verwendung von quer zur Ofenlängsrichtung liegenden Rollen, dadurch gekennzeichnet, daß die Rollen, auf welchen die Bleche aufgestapelt werden, und die Rollen, welche die Blechstapel weiterfördern, in regelmäßigen Zeitabständen stillgesetzt und wieder in Bewegung gebracht werden.2. The method according to claim i under Use of rolls lying transversely to the longitudinal direction of the furnace, characterized in that that the roles on which the sheets are stacked, and the roles, which convey the stack of sheets, stopped at regular intervals and then again be set in motion.
DEA67215D 1932-09-23 1932-09-23 Process for conveying sheet metal through continuously operating glow ovens Expired DE603811C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA67215D DE603811C (en) 1932-09-23 1932-09-23 Process for conveying sheet metal through continuously operating glow ovens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA67215D DE603811C (en) 1932-09-23 1932-09-23 Process for conveying sheet metal through continuously operating glow ovens

Publications (1)

Publication Number Publication Date
DE603811C true DE603811C (en) 1934-10-09

Family

ID=6944372

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA67215D Expired DE603811C (en) 1932-09-23 1932-09-23 Process for conveying sheet metal through continuously operating glow ovens

Country Status (1)

Country Link
DE (1) DE603811C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741422C (en) * 1936-01-17 1943-11-11 Siemens Ag Hardening plant
DE1188108B (en) * 1958-08-02 1965-03-04 Wistra Ofenbau Ges Mit Beschra Quenching device for elongated goods coming from hardening and hardening ovens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741422C (en) * 1936-01-17 1943-11-11 Siemens Ag Hardening plant
DE1188108B (en) * 1958-08-02 1965-03-04 Wistra Ofenbau Ges Mit Beschra Quenching device for elongated goods coming from hardening and hardening ovens

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