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DE960981C - Torch for flame cutting steel at high speed - Google Patents

Torch for flame cutting steel at high speed

Info

Publication number
DE960981C
DE960981C DEM16078A DEM0016078A DE960981C DE 960981 C DE960981 C DE 960981C DE M16078 A DEM16078 A DE M16078A DE M0016078 A DEM0016078 A DE M0016078A DE 960981 C DE960981 C DE 960981C
Authority
DE
Germany
Prior art keywords
cutting
high speed
nozzle
heating
torch
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
DEM16078A
Other languages
German (de)
Inventor
Walter Mueller
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.)
Adolf Messer GmbH
Original Assignee
Adolf Messer GmbH
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 Adolf Messer GmbH filed Critical Adolf Messer GmbH
Priority to DEM16078A priority Critical patent/DE960981C/en
Application granted granted Critical
Publication of DE960981C publication Critical patent/DE960981C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38Torches, e.g. for brazing or heating
    • F23D14/42Torches, e.g. for brazing or heating for cutting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/52Nozzles for torches; for blow-pipes
    • F23D14/54Nozzles for torches; for blow-pipes for cutting or welding metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Description

Bekanntlich können Stahl und Stahllegierungen mixt Hilfe eines Sauerstoffstrahles und einer diesen umgebenden Heizflamme geschnitten werden. Zur Erzeugung der Heizflamme dient ein Besteht das. Brenngas. aus einem Kohlenwasserstoff, kann man, in der Flamme zwei. Verbrennungsstufen unterscheiden. In, der ersten Stufe verbrennst der Kohlenstoff mit dem Sauerstoff des. Gemischas. zu Kohlenoxyd,, und Wasserstoff wird frei. In, der zweiten Verbren.-nunagsstufe wird der benötigte Sauerstoff der umgebenden Luft entnommen. Die dabei verwendeten Düsenfarmen sind die Ringdüse, bei der die Heizflamme aus einem Ringspalt um deal Schneidstrahl brennst, und, die Lochkranz- oder Siebdüse, bei der die einzelnen Flammen parallel oder konvergent zum Schmeidstrahl stehen, wobei mindestens die erste Verbrennungsstufe der Heizflamme den Schneidsauerstoffstrahl nicht berührt. Dien Heizflamme kann daher den durch die; Entspannung gekühlten Sauerstoff nur im geringen Maße aufheizen.As is well known, steel and steel alloys can be mixed using an oxygen jet and a heating flame surrounding it. To generate the heating flame serves an insists that. fuel gas. from a hydrocarbon, one can, in the flame two. Differentiate between combustion stages. In, the first stage, the carbon burns with the oxygen of the mixture. to carbon dioxide, and hydrogen is released. In, the second combustion stage is the required oxygen from the surrounding air taken. The nozzle farms used are the ring nozzle with the heating flame burn from an annular gap around the cutting jet, and, the perforated ring or sieve nozzle, in which the individual flames are parallel or convergent to the smelting jet, wherein at least the first combustion stage of the heating flame is the cutting oxygen jet not touched. The heating flame can therefore be used by the; Relaxation of chilled oxygen only heat up to a small extent.

Die Erfindung betrifft Lochkranz- oder Siebdüsen., bei denen: ein intensives. Aufheizen des Schneidsauerstoffstrahles. in der Weise ermöglicht wird, daß die Heizflamme mit denn Schneidsauerstoffstrahl in Berührung kommt, ohne; daß eine nennenswerte Vermischung des Heizgases mit dem Schneidsauerstoffstrahl eintritt. Das wird erfindungsgemäß da.durch erreicht, da,ß die in an sich bekannter Weise konvergent zueinander verlaufendem Heizdüsenkanäle zugleich derart windschief zur Schneidsauerstoffd;üse gerichtet sind, däß die Heizflammen in ihrer ers.tenVerbrennungsstufeden Sauerstoffstrahl berühren und seiner Grenzschicht eine Drallbewegung erteilen, wähnend der Kern. des SauerstaffstrahJes. in seiner geradlinigen Strömung verbleibt. Durch diesen Drall wird die Schlacke vor dem Schneidsauerstoffstrahl. beim Schneiden, in erhöhtem Maße zur Seite geschleudert und der Oxyd'ationsp-rozeß beschleunigt, was eine wesentliche Erhöhung der Schnittgeschwindigkeit bringt.The invention relates to perforated ring or sieve nozzles. In which: a intense. Heating up the cutting oxygen jet. is made possible in such a way that that the heating flame comes into contact with the cutting oxygen beam without; that significant mixing of the heating gas with the cutting oxygen jet occurs. According to the invention, this is achieved because, in a manner known per se convergent heating nozzle channels at the same time so skewed to each other Cutting oxygen nozzles are directed so that the heating flames are in their first combustion stage Touching the oxygen jet and giving its boundary layer a twisting motion while thinking the core. of the SauerstaffstrahJes. remains in its rectilinear flow. By this twist is the slag before the cutting oxygen jet. when cutting, thrown to the side to a greater extent and accelerates the oxidation process, which brings a significant increase in the cutting speed.

Es ist zwar schon, bekannt, bei Gasbrennern für Gasherde die Luftdüsen sowohl gegen, die Längsachse des. Gaskanals geneigt als auch tangentiad zur Längsachse des Gaskanals. auszurichten. Die Anordnung der Luftdüsen, ist aber nur deswegen getroffen, um eine vollkommene Durchwirbelung des Gases mit Luft zu erreichen,. Ein; solcher Brenner ist aber für Schneidzweeke nicht verwendbar und kann. auch keine Anregung zu der erfindungsgemäßen Maßnahme gebenr, weil völlig andere, Wirkungen, erzielt werden.It is well known that the air nozzles on gas burners for gas stoves both inclined against the longitudinal axis of the gas channel and tangentiad to the longitudinal axis of the gas duct. align. The arrangement of the air nozzles, however, is only for that reason taken in order to achieve a perfect swirling of the gas with air. A; Such a burner is not and can not be used for cutting purposes. even no suggestion for the measure according to the invention, because completely different, effects, be achieved.

Die Zeichnung veranschaulicht vereinfacht ein Ausführungsbeispiel der Erfindung.The drawing illustrates an exemplary embodiment in a simplified manner the invention.

Im Brennerkopf i strömt durch die Bohrung 2 der Schncidsauerstoff und durch die Bohrurig 3 das Brenngas-Sauerstoff-Gemisch für die Heizflammen: q.. Am Brennerkopf ist die Schneid,düse 5 und die Heizdüse 6 durch die Überwurfmu.tter 7 in be- kannter Weise gehalten. Aus. darr Schaeiddüse 5 strömen der Schneidsauerstoffs.trahl 8 und das Brenngas-Sauerstoff-Gemisch für die Heizflammen; .¢ a:us dien Bohrungen, 9, die konvergent und zugleich windschief zur Schneidsauers.toffdüse verlaufen.. DurchsdieseAnordnung der Heizdüsen wird der Schnei.dsauerstoffstrahl aufgeheizt und seine Grenzschicht in Drehung versetzt, was, diaerwähnte Beschleunigung des. Schneidvorganges bewirkt.In the burner head of the i Schncidsauerstoff and through the Bohrurig 3, the fuel gas-oxygen mixture for the heating flames flowing through the bore 2: q .. On the burner head is the cutting, nozzle 5 and the heating nozzle 6 by the Überwurfmu.tter 7 in a known Way kept. The end. The cutting oxygen jet 8 and the fuel gas-oxygen mixture for the heating flames flow through the Schaeiddüse 5; . ¢ a: we serve the bores 9, which are convergent and at the same time skewed to the cutting oxygen nozzle. This arrangement of the heating nozzles heats the cutting oxygen jet and sets its boundary layer in rotation, which causes the aforementioned acceleration of the cutting process.

Claims (1)

PATENTANSPRUCH: Brenner mit einer die Schneidsauerstoffdüse umgebenden Herizgaslochkranzdüse zum Brennschneiden von Stahl mit großer Geschwindigkeit, dadurch gekennzeichnet, daß die Kanäle (9) der Lochkranzdüse derart windschief zur Schneidsauerstoffdüse (5) gerichtet sind, daß die Heizflammen, (4) in ihrer ersten Verbrennungsstufe den Sauürsto@ffstrahl (8) berühren und seiner Grenzschicht eine Drallbewegung erteilen. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 379 3o6, 576 4o6; französische Patentschrift Nr. 61g gib; USA.-Patentschrift Nr. 1 872 40g. PATENT CLAIM: Burner with a Herizgaslochkranzdüse surrounding the cutting oxygen nozzle for flame cutting of steel at high speed, characterized in that the channels (9) of the perforated wreath nozzle are so skewed to the cutting oxygen nozzle (5) that the heating flames (4) in their first combustion stage Touch the Sauürsto @ ff jet (8) and give its boundary layer a twisting motion. Considered publications: German Patent Specifications Nos. 379 3o6, 576 4o6; French patent specification No. 61g give; U.S. Patent No. 1,87240g.
DEM16078A 1952-10-30 1952-10-30 Torch for flame cutting steel at high speed Expired DE960981C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM16078A DE960981C (en) 1952-10-30 1952-10-30 Torch for flame cutting steel at high speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM16078A DE960981C (en) 1952-10-30 1952-10-30 Torch for flame cutting steel at high speed

Publications (1)

Publication Number Publication Date
DE960981C true DE960981C (en) 1957-03-28

Family

ID=7297071

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM16078A Expired DE960981C (en) 1952-10-30 1952-10-30 Torch for flame cutting steel at high speed

Country Status (1)

Country Link
DE (1) DE960981C (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE379306C (en) * 1923-08-20 Alfred Godfrey Cutting torch
FR619916A (en) * 1926-07-22 1927-04-12 Torch extension, producing gas rotation
US1872409A (en) * 1930-04-15 1932-08-16 Kobe Inc Torch tip
DE576406C (en) * 1933-05-11 Adolf Koerbitz Gas burner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE379306C (en) * 1923-08-20 Alfred Godfrey Cutting torch
DE576406C (en) * 1933-05-11 Adolf Koerbitz Gas burner
FR619916A (en) * 1926-07-22 1927-04-12 Torch extension, producing gas rotation
US1872409A (en) * 1930-04-15 1932-08-16 Kobe Inc Torch tip

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