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DE748984C - Electric furnace with protective gas atmosphere - Google Patents

Electric furnace with protective gas atmosphere

Info

Publication number
DE748984C
DE748984C DEL99129D DEL0099129D DE748984C DE 748984 C DE748984 C DE 748984C DE L99129 D DEL99129 D DE L99129D DE L0099129 D DEL0099129 D DE L0099129D DE 748984 C DE748984 C DE 748984C
Authority
DE
Germany
Prior art keywords
furnace
space
protective gas
auxiliary
auxiliary space
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
DEL99129D
Other languages
German (de)
Inventor
Dipl-Ing Karl-August Lohausen
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 filed Critical
Priority to DEL99129D priority Critical patent/DE748984C/en
Application granted granted Critical
Publication of DE748984C publication Critical patent/DE748984C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

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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)

Description

Elektrischer Ofen mit Schutzgasatmosphäre Es ist bekannt, die zum Glühen unter Schutzgas erforderliche Atmosphäre durch Aufbereiten von Ammoniak o. dgl. in besonderen Schutzgaserzeugern herzustellen, die in der Nähe des Ofens aufgestellt und mit ihm mit Rohrleitungen verbunden sind. Diese Bauart beansprucht einen großen Raum und ist teuer. Es ist auch ein Ofen bekannt, bei dem im gleichen Gehäuse über dem Glühraum in einem von ihm durch eine Trennwand getrennten Hilfsraum ein Schutzgastrzeuger mit Katalysator untergebracht ist, wobei der Hilfsraum an einem Ofenende mit dem Glühraum durch einen Kanal verbunden ist, während am anderen Ofenende sich eine Gaszuleitung zum Hilfsraum befindet.Electrical furnace with protective gas atmosphere It is known that for Annealing under protective gas required atmosphere by processing ammonia or similar Like. Manufacture in special protective gas generators that are placed near the furnace and are connected to it with pipelines. This type of construction takes a long time Space and is expensive. There is also a known furnace in which in the same housing over the incandescent room in an auxiliary room separated from it by a partition wall a protective gas generator is housed with catalyst, the auxiliary space at one end of the furnace with the The glow chamber is connected by a channel, while at the other end of the furnace there is one Gas supply line to the auxiliary room is located.

Die Erfindung bezweckt eine weitere Verbesserung des Ofens der zuletzt erwähnten Gattung und besteht darin, daß der Hilfsraum von dem mit elektrischen Heizkörpern ausgerüsteten Glühraum mitbeheizt wird und die Gasvexbindungsöffnung zwischen Hilfsraum und Glühraum innerhalb des Ofenraumes liegt.The invention aims to further improve the furnace of the last mentioned genus and consists in the fact that the auxiliary space of the one with electrical Heating element equipped glow space is heated and the gas connection opening lies between the auxiliary space and the glow space within the furnace space.

Die Erfindung hat den Vorteil, daß eine einzige Heizkörpereinrichtung sowohl den Glühraum als auch.den Hilfsraum mit dem Schutzgaserzeuger und dem Katalysator beheizt. Ein weiterer Vorteil besteht darin, daß das Schutzgas im Ofen einen auf das Mindestmaß herabgesetzten Weg zum Glühraum zurückzulegen hat. Hieraus ergibt sich eine gedrängte Bauart mit dem besten thermischen Wirkungsgrad sowie eine sehr einfache Einrichtung. Die Bauart eignet sich besonders für kleinere Ofen, beispielsweise für Glühöfen, zum Behandeln von Werkzeugen u. dgl.The invention has the advantage that a single radiator device both the glow space and the auxiliary space with the protective gas generator and the catalytic converter heated. Another advantage is that the protective gas in the furnace on has to cover the minimum distance to the glowing room. From this it follows a compact design with the best thermal efficiency and a very easy setup. The design is particularly suitable for smaller ovens, for example for annealing furnaces, for treating tools and the like.

Die Zeichnung veranschaulicht ein Ausführungsbeispiel der Erfindung.The drawing illustrates an embodiment of the invention.

Der Ofen i besitzt einen Glühraum 2 und einen sich an diesen anschließenden Abkühlraum 3. Im Glühraum sind elektrische Heizkörper q angeordnet. Der Kühlraum 3 ist von einem mit Wasser gefüllten Kühlmantel s umgeben. Das Kühlwasser tritt bei 6 ein und bei ; aus. Oberhalb des Glühraumes ist ein Hilfsraum 8 vorgesehen, der als Spaltmuffel dient und in dem somit der Schutzgaserzeuger mit dem Katalysator untergebracht ist. Eine (511111111g 9 an dem einen Ofenende innerhalb des Ofenraumes verbindet den Glühraum 2 1111t dein Hilfsraum B. Am anderen Ofenende ist eine Gaszuleitung io vorgesehen, die das Schutzgas der Spaltmuffel 8 zuführt. Das durch die Leitung io eintretende- Ammoniak wird durch Ausnutzung der durch die Heizkörper q. iin Glührauen erzeugte Ofenwärme bei etwa goo"= und in Anwesenheit von fein verteiltem Nickel als Katalysator in Stickstoff und Wasserstoff aufgespalten.The furnace i has a glow space 2 and an adjoining one Cooling room 3. Electric heating elements q are arranged in the glowing room. The cold room 3 is surrounded by a cooling jacket s filled with water. The cooling water occurs at 6 on and at; the end. An auxiliary space 8 is provided above the glow space, which serves as a gap muffle and in which thus the protective gas generator with the catalyst is housed. One (511111111g 9 at one end of the furnace inside the furnace chamber connects the glow space 2 1111t to your auxiliary space B. At the other end of the furnace there is a gas supply line io provided, which supplies the protective gas to the gap muffle 8. That through the line io entering- ammonia is obtained by taking advantage of the heating elements q. iin glowing grooves furnace heat generated at about goo "= and in the presence of finely divided nickel split into nitrogen and hydrogen as a catalyst.

Claims (1)

PATENTANSPRUCH: Elektrischer Ofen mit im gleichen Gehäuse über dem Glühraum in einem von ihm- -durch eine Trennwand getrennten Hilfsraum untergebrachten Schutzgaserzeuger mit Katalysator und mit einem Verbindungskanal vom Hilfsraum zum Glühraum an einem Ofenende und einer Gaszuleitung zum Hilfsraum am anderen Ofenende, dadurch gekennzeichnet, daß der Hilfsraum von dem mit elektrischen Reizkörpern ausgerüstetem Glühraum mitbeheizt wird und die Gasverbindungsöffnung zwischen Hilfsraum und Glühraum innerhalb des Ofenraumes liegt. Zur Abgrenzung des Anmeldungsgegenstandes vorn Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen «-orden: deutsche Patentschriften , . Nr. 313 7882, 646389, 331621, 648069; USA.-Patentschrift ...... Nr. 1 594 589. PATENT CLAIM: Electric furnace with a protective gas generator with catalyst and a connecting channel from the auxiliary space to the ignition space at one end of the furnace and a gas feed line to the auxiliary space at the other end of the furnace, which is housed in an auxiliary space separated from it by a partition wall the auxiliary space is heated by the glowing room equipped with electrical stimuli and the gas connection opening between the auxiliary and glowing room is inside the furnace chamber. To distinguish the subject matter of the application from the state of the art, the following documents have been considered in the granting procedure: German patents,. No. 313 7882, 646389, 331621, 648069; USA. Patent ...... no. 1,594,589.
DEL99129D 1939-09-26 1939-09-26 Electric furnace with protective gas atmosphere Expired DE748984C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL99129D DE748984C (en) 1939-09-26 1939-09-26 Electric furnace with protective gas atmosphere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL99129D DE748984C (en) 1939-09-26 1939-09-26 Electric furnace with protective gas atmosphere

Publications (1)

Publication Number Publication Date
DE748984C true DE748984C (en) 1944-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEL99129D Expired DE748984C (en) 1939-09-26 1939-09-26 Electric furnace with protective gas atmosphere

Country Status (1)

Country Link
DE (1) DE748984C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032697B (en) * 1952-12-05 1958-06-19 Zsigmond De Galocsy Method and device for the extraction of superheated high-pressure steam from the moisture to be dried

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE313782C (en) *
DE331621C (en) * 1919-08-20 1921-01-10 Schmidt Hermann Method for heating the ends of thin-walled pipes u. like
US1594589A (en) * 1925-01-02 1926-08-03 Thaddeus F Baily Continuous furnace
DE646389C (en) * 1935-09-03 1937-06-12 Siemens Schuckertwerke Akt Ges Process for generating a local reducing atmosphere in electrically heated ovens for firing ceramic goods
DE648069C (en) * 1935-11-14 1937-07-21 Patra Patent Treuhand Electric tungsten or molybdenum resistance furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE313782C (en) *
DE331621C (en) * 1919-08-20 1921-01-10 Schmidt Hermann Method for heating the ends of thin-walled pipes u. like
US1594589A (en) * 1925-01-02 1926-08-03 Thaddeus F Baily Continuous furnace
DE646389C (en) * 1935-09-03 1937-06-12 Siemens Schuckertwerke Akt Ges Process for generating a local reducing atmosphere in electrically heated ovens for firing ceramic goods
DE648069C (en) * 1935-11-14 1937-07-21 Patra Patent Treuhand Electric tungsten or molybdenum resistance furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032697B (en) * 1952-12-05 1958-06-19 Zsigmond De Galocsy Method and device for the extraction of superheated high-pressure steam from the moisture to be dried

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