DE2730310C2 - Method of conveying grates through a tunnel kiln - Google Patents
Method of conveying grates through a tunnel kilnInfo
- Publication number
- DE2730310C2 DE2730310C2 DE19772730310 DE2730310A DE2730310C2 DE 2730310 C2 DE2730310 C2 DE 2730310C2 DE 19772730310 DE19772730310 DE 19772730310 DE 2730310 A DE2730310 A DE 2730310A DE 2730310 C2 DE2730310 C2 DE 2730310C2
- Authority
- DE
- Germany
- Prior art keywords
- grates
- conveying
- tunnel
- tunnel kiln
- furnace
- 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
Links
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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces 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
- F27B9/20—Furnaces 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
- F27B9/26—Furnaces 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 on or in trucks, sleds, or containers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Fördern von Rosten durch einen Tunnelofen.The invention relates to a method for conveying grates through a tunnel furnace.
FQr die Warmbehandlung von Eisenteilen, beispielsweise dem Hirter., sind in einem Tunnelofen verschiedene Behandlungszonen mit unterschiedlichen Temperaturen und verschieden zusammengesetzten Atmosphären erforderlich.For the heat treatment of iron parts, for example the shepherd., are different in a tunnel oven Treatment zones with different temperatures and different atmospheres necessary.
In dem angenommenen Behandlungsfall sind eine Aufheizzone, eine Aufkohlungszoine, eine Heiz- bzw. Kühlzone und eine Härtezone erforderlich.In the assumed treatment case, a heating zone, a carburizing zone, a heating or A cooling zone and a hardening zone are required.
Bisher wurden die, die zu behandelnden Teile tragenden Roste durch eine vor dem Ofemeingang aufgestellte Stoßmaschine als geschlossene Reihe durch den Tunnelofen im Takt geschoben. Dies machte es erforderlich, daß die einzelnen Behandlungszomen nur mangelhaft gegeneinander abgetrennt werden konnten.So far, the parts to be treated have been load-bearing Grates by a slotting machine set up in front of the kiln entrance as a closed row through the tunnel kiln pushed in time. This made it necessary that the individual treatment zomes only inadequate could be separated from each other.
Die Folgen davon waren nicht genau eingehaltene Temperaturen und eine nicht einwandfreie Zusammensetzung der Atmosphäre.The consequences of this were not exactly observed Temperatures and an improper composition of the atmosphere.
Dadurch gab es z. B. sehr viel Ausschuß beim Aufkohlen von Eisenteilen, weil es hierbei gleichzeitig auf die Temperaturhöhe und Zusammensetzung des Aufkohlungsgases ankommtThis gave z. B. a lot of scrap when carburizing of iron parts because it affects the Temperature level and composition of the carburizing gas matter
Eine weitere Schwierigkeit besteht darin, daß die in einer Reihe durch einen Tunnelofen gestoßenen Roste sich durch das hohe Gewicht der Eisenteile und die großen Reibungskräfte hoch oder qui:r stellen. Es mußte dann der Ofen erst wieder abgekühlt werden, um diesen ausräumen iu können. Deshalb hat man bisher die öfenAnother difficulty is that the in a row of grids pushed through a tunnel kiln is characterized by the heavy weight of the iron parts and the large ones Set friction forces high or qui: r. It should then the furnace must first be cooled down so that it can be emptied. That is why the ovens have been used up to now
in kurze Teile zerlegt, die rechtwinklig zueinander auf- „dismantled into short parts that are at right angles to each other "
gestellt und mit Stoßmaschinen versehen waren. I;were placed and provided with slotting machines. I;
Der Erfindung liegt die Aufgabe zugrunde, dann, so wenn nicht transportiert wird, die einzelnen Behandlungs??nen durch quer zur Transportrichtung angeordnete Schottwände mit Hubeinrichtungen voneinander zu trennen, um eine bessere Tennperaturgenauigkek und Zusammensetzung der Gase zu erreichen.The invention is based on the task of the individual treatments, if not transported through bulkheads arranged transversely to the transport direction with lifting devices from one another to separate in order to achieve a better temperature accuracy and composition of the gases.
Diese Aufgabe ist nach der Erfindung durch ein Verfahren gelöst, mit welchem die die zu behandelnden Teile tragenden Roste von der ersten in die zweite und jede weitere folgende Behandlungszone einer nach dem anderen einzeln gezogen werden. eoThis object is achieved according to the invention by a method with which the to be treated Part-bearing grids from the first to the second and each subsequent treatment zone one after the other others are drawn individually. eo
Selbstverständlich ist es aber auch in weiterer erfindungsgemäßer Ausgestaltung des Verfahrens möglich, daß gleichzeitig in einer vorher festgelegten Stückzahl mehrere Roste in die zweite oder folgenden Behandlungszonen gezogen werden.It goes without saying, however, that it is also further according to the invention Design of the method possible that at the same time in a predetermined number of pieces several grids can be pulled into the second or subsequent treatment zones.
Durch die Anwendung der Verfahren lassen sich in einfacherer Weise als bisher qualitativ bessere Teile herstellen.By using the method, parts of better quality can be produced in a simpler way than before produce.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772730310 DE2730310C2 (en) | 1977-07-05 | 1977-07-05 | Method of conveying grates through a tunnel kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772730310 DE2730310C2 (en) | 1977-07-05 | 1977-07-05 | Method of conveying grates through a tunnel kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2730310A1 DE2730310A1 (en) | 1979-01-25 |
| DE2730310C2 true DE2730310C2 (en) | 1985-10-17 |
Family
ID=6013193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772730310 Expired DE2730310C2 (en) | 1977-07-05 | 1977-07-05 | Method of conveying grates through a tunnel kiln |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2730310C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4132197A1 (en) * | 1991-07-08 | 1993-01-14 | Aichelin Gmbh | METHOD AND DEVICE FOR HEAT TREATMENT OF WORKPIECES |
-
1977
- 1977-07-05 DE DE19772730310 patent/DE2730310C2/en not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| NICHTS-ERMITTELT |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2730310A1 (en) | 1979-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAM | Search report available | ||
| OC | Search report available | ||
| 8110 | Request for examination paragraph 44 | ||
| 8127 | New person/name/address of the applicant |
Owner name: RUHRGAS AG, 4300 ESSEN, DE |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |