DE910656C - Method and device for producing a furnace atmosphere that protects or carburizes metals - Google Patents

Method and device for producing a furnace atmosphere that protects or carburizes metals

Info

Publication number
DE910656C
DE910656C DEI5400A DEI0005400A DE910656C DE 910656 C DE910656 C DE 910656C DE I5400 A DEI5400 A DE I5400A DE I0005400 A DEI0005400 A DE I0005400A DE 910656 C DE910656 C DE 910656C
Authority
DE
Germany
Prior art keywords
metals
furnace atmosphere
solution
producing
carburizes
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
DEI5400A
Other languages
German (de)
Inventor
Frank William Johnson
John Arthur Swain
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.)
Incandescent Heat Co Ltd
Original Assignee
Incandescent Heat Co Ltd
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 Incandescent Heat Co Ltd filed Critical Incandescent Heat Co Ltd
Priority to DEI5400A priority Critical patent/DE910656C/en
Application granted granted Critical
Publication of DE910656C publication Critical patent/DE910656C/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
    • C21D1/76Adjusting the composition of the atmosphere

Description

Verfahren und Vorrichtung zur Herstellung einer Metalle schützenden oder aufkohlenden Ofenatmosphäre Die Erfindung betrifft ein Verfahren zur Herstellung einer Metalle schützenden oder aufkohlenden Ofenatfnosphäre. Es ist bereits bekannt, einem Ofen tropfenweise eine L ithium enthaltende Lösung an einem Punkte zuzuführen, der von dem Ort der Brennstoffeinspritzung getrennt ist, um so eine Atmosphäre in dem Ofen zu schaffen, in der Metalle geschützt oder aufgekohlt werden. Es ist auch bereits vorgeschlagen worden, was jedoch nicht zum Stande der Technik gehört, für diesen Zweck in den Ofen eine Lithiumnaphthenatlösung einzuspritzen. Die vorliegende Erfindung bezweckt, die Wirksamkeit dieser Verfahren zu steigern.Method and device for producing a protective metal or carburizing furnace atmosphere The invention relates to a method for production a metal protecting or carburizing furnace atmosphere. It is already known to add, drop by drop, a solution containing lithium to a furnace at one point, which is separated from the location of the fuel injection so as to enter an atmosphere to create the furnace in which metals are protected or carburized. It is also has already been proposed, which, however, does not belong to the state of the art for To do this, inject a lithium naphthenate solution into the furnace. The present The invention aims to increase the effectiveness of these methods.

Die Erfindung geht von der durch umfangreiche Versuche ermittelten Tatsache aus, daB eine die Metalle schützende oder aufkohlende Ofenatmosphäre mit dem günstigsten Wirkungsgrad dadurch erzielt wird, da13 eine Lithiumnaphthenatlösung unter Druck durch Einspritzen fein zerstäubt wird. Diese Einspritzung findet wie bei dem bekannten Verfahren an einem Punkte der Ofenkammer statt, der von dem Ort der Brennstoffeinspritzung getrennt ist. , Es hat sich gezeigt, daß eine besonders fein zerstäubte Lösung, deren einzelne kleine Tröpfchen in dein heißen Ofen sofort vergasen, ;sich mit großer Geschwindigkeit in dem Ofen ausbreitet und selbst stärkere Schichten von kleineren metallenen Gegenständen, wie Schrauben u. dgl., schnell durchdringt. Die bisher angewendeten Verfahren, bei denen Lithiumsalzlösungen über Tropfeinrichtungen in den Ofen eingeträufelt wurden, bedingte wegen der geringeren Durchdringungsfähigkeit der geschlossen eingebrachten und auf einer Stelle verdampften Lithiumsalzlösung einen wesentlich höheren Verbrauch an Lithium.The invention is based on that determined by extensive tests The fact that a furnace atmosphere protecting or carburizing the metals is involved the best efficiency is achieved by using a lithium naphthenate solution is finely atomized by injection under pressure. This injection takes place like in the known method takes place at a point in the furnace chamber from the location the fuel injection is separated. , It has shown, that a particularly finely atomized solution, whose individual small droplets in your immediately gasify the hot furnace; it spreads through the furnace at great speed and even thick layers of smaller metal objects like screws and the like, penetrates quickly. The previously used methods in which lithium salt solutions were instilled into the oven via drip devices, due to the lower Penetration ability of the closed introduced and evaporated in one place Lithium salt solution has a significantly higher consumption of lithium.

Es hat sich gemäß der Erfindung als zweckmäßig erwiesen, wenn für das feine Zerstäuben der Lösung eine Pumpe verwendet wird, die der normalen Dieselmotorbrennstoffpumpe ähnlich ist.It has proven to be useful according to the invention if for To finely atomize the solution, use a pump similar to that of a normal diesel engine fuel pump is similar.

Um eine ,sichere Kontrolle des Volumens des eingespritzten Mittels und der Zeit der Einspritzung zu erzielen, können die Einspritzdüsen mit Regulierventilen ausgerüstet sein. Die Lithiumnaphthenatlösung hat sich als besonders geeignet für das Zerstäubungsverfahren mittels Dieselmotorbrennstofpumpen erwiesen.To ensure reliable control of the volume of the injected agent and the time of injection can be achieved, the injection nozzles with regulating valves be equipped. The lithium naphthenate solution has proven to be particularly suitable for the atomization process using diesel engine fuel pumps proved.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung einer Metalle schützenden oder aufkohlenden Ofenatmosphäre durch Einführen einer Lithiumsalzlösung in die Ofenkammer an einem Punkt, der von dem Ort der Brennstoffeinspritzung getrennt ist. dadurch gekennzeichnet, daß eine Lithiumnaphthenatlösung unter Druck durch Einspritzdüsen fein zerstäubt wird. a. Vorrichtung zur Durchführung des Verfahrens nach Anspruch i, gekennzeichnet durch eine zum feinen Zerstäuben der Lösung dienende Pumpe, die einer normalen Dieselmotorbrennstoffpumpe ähnlich ist, und durch mit Regulierventilen ausgerüstete Einspritzdüsen.PATENT CLAIMS: i. Process for the production of a metals protective or carburizing furnace atmosphere by introducing a lithium salt solution into the Furnace chamber at a point separate from the fuel injection location. characterized in that a lithium naphthenate solution under pressure through injection nozzles is finely atomized. a. Apparatus for performing the method according to claim i, characterized by a pump serving to finely atomize the solution, the is similar to a normal diesel engine fuel pump, and through with regulating valves equipped injectors.
DEI5400A 1952-01-08 1952-01-08 Method and device for producing a furnace atmosphere that protects or carburizes metals Expired DE910656C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI5400A DE910656C (en) 1952-01-08 1952-01-08 Method and device for producing a furnace atmosphere that protects or carburizes metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI5400A DE910656C (en) 1952-01-08 1952-01-08 Method and device for producing a furnace atmosphere that protects or carburizes metals

Publications (1)

Publication Number Publication Date
DE910656C true DE910656C (en) 1954-05-06

Family

ID=7184902

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI5400A Expired DE910656C (en) 1952-01-08 1952-01-08 Method and device for producing a furnace atmosphere that protects or carburizes metals

Country Status (1)

Country Link
DE (1) DE910656C (en)

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