DE2839515B1 - Nozzle arrangement to prevent the precipitation of flame slag along the bottom edge of the kerf during flame cutting - Google Patents

Nozzle arrangement to prevent the precipitation of flame slag along the bottom edge of the kerf during flame cutting

Info

Publication number
DE2839515B1
DE2839515B1 DE19782839515 DE2839515A DE2839515B1 DE 2839515 B1 DE2839515 B1 DE 2839515B1 DE 19782839515 DE19782839515 DE 19782839515 DE 2839515 A DE2839515 A DE 2839515A DE 2839515 B1 DE2839515 B1 DE 2839515B1
Authority
DE
Germany
Prior art keywords
cutting
kerf
lower edge
flame
slag
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.)
Ceased
Application number
DE19782839515
Other languages
German (de)
Inventor
Wolf Dipl-Ing Aengeneyndt
Juergen Schmitz
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.)
Schmitz Soehne J H GmbH
Original Assignee
Schmitz Soehne J H 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 Schmitz Soehne J H GmbH filed Critical Schmitz Soehne J H GmbH
Priority to DE19782839515 priority Critical patent/DE2839515B1/en
Publication of DE2839515B1 publication Critical patent/DE2839515B1/en
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00Cutting, scarfing, or desurfacing by applying flames
    • B23K7/10Auxiliary devices, e.g. for guiding or supporting the torch

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gas Burners (AREA)

Description

Je nach Materialdicke und -art sind die Anstellwinkel Alpha und Beta sowie der Abstand der zusätzlichen Düsen 6 und 6a von der Brennschnittunterkante sowie ihr Abstand zueinander zu verändern. Die zusätzlichen Düsen 6 und 6a machen während des Brennschneidevorganges den Weg der Brennschneiddüse 3 mit ihrer Vorschubgeschwindigkeit V mit Auf diese Weise wird die Bildung der Brennbärte 5 entlang der Schnittfugenunterkante verhindert. Depending on the material thickness and type, the angles of attack are alpha and beta and the distance between the additional nozzles 6 and 6a from the lower edge of the flame cut as well as changing their distance from one another. Make the additional nozzles 6 and 6a during the cutting process the path of the cutting nozzle 3 with its feed rate V with In this way, the formation of the mustaches 5 along the lower edge of the kerf prevented.

Claims (1)

Patentanspruch: Düsenanordnung zur Zufuhr eines gasförmigen Mediums an die Schnittfugenunterkante, um beim Brennschneiden von Blechen oder Brammen den Niederschlag von Brennschlacken entlang der Schnittfugenunterkante zu verhindern, d a d u r c h gekennzeichnet, daß unmittelbar neben dem Austrittsstrahl des Schneidbrenners an der Schnittfugenunterkante in jede Richtung und in ihrem Abstand zueinander einstellbare zusätzliche Düsen angeordnet sind, die mit Brennergeschwindigkeit gegen die Brennrichtung gerichtet synchron mit dem Schneidbrenner verfahren. Claim: Nozzle arrangement for supplying a gaseous medium to the lower edge of the kerf to prevent the To prevent the build-up of burning slag along the lower edge of the kerf, d a d u r c h marked that immediately next to the exit jet of the cutting torch adjustable at the lower edge of the kerf in every direction and in their distance from one another additional nozzles are arranged, the burner speed against the burning direction traverse directed synchronously with the cutting torch. Die Erfindung betrifft eine Düsenanordnung beim Brennschneiden von Blechen oder Brammen unmittelbar neben dem Brennstrahlaustritt an der Schnittfugenunterkante. The invention relates to a nozzle arrangement for flame cutting Sheets or slabs directly next to the jet outlet on the lower edge of the kerf. Beim Brennen von insbesondere dicken Blechen oder Stahlbrammen bildet sich an der Unterseite der Bleche an den Kanten der Brennfuge eine Schlackenraupe, die auch als Brennbart bezeichnet wird. Die Brennbärte sind bei der Weiterverarbeitung störend und können oft nur schwer beseitigt werden, Der Brennbart schlägt sich an der Schnittfugenunterkante in einem Bereich neben dem austretenden Brennstrahl nieder, wo auf Grund der Brennstrahlabströmgeschwindigkeit ein Unterdruck entsteht. Erfindungsgemäß werden daher unmittelbar neben dem Brennstrahlaustritt an der Schnittfugenunterkante synchron mit der Brennschneiddüse verfahrende zusätzliche Düsen, z. B. Heizdüsen, zur Zufuhr eines gasförmigen im Druck einstellbaren Mediums wie Luft, Sauerstoff oder Brennschneidgas, vorgesehen. Durch entsprechende Einstellung des Anströmwinkels der Düsen auf die Unterseite des zu trennenden Materials bzw. des Abströmwinkels entgegen der Schneidrichtung kann die Unterdruckzone neben den Brennstrahlaustrittsbereich vermieden und ein Abströmen der Brennschlacke entgegen der Schneidrichtung sichergestellt werden, so daß die Entstehung eines Brennbarts an der Schnittfugenunterkante ganz vermieden wird. Forms when burning particularly thick sheet metal or steel slabs A slag bead is located on the underside of the metal sheets at the edges of the furnace joint, which is also known as a burning beard. The brandy beards are in the process of further processing annoying and can often only be removed with difficulty, the stinging beard strikes the lower edge of the kerf in an area next to the exiting focal ray, where a negative pressure arises due to the focal jet outflow velocity. According to the invention are therefore immediately next to the jet outlet on the lower edge of the kerf Additional nozzles moving synchronously with the cutting nozzle, e.g. B. heating nozzles, for supplying a gaseous medium with adjustable pressure such as air or oxygen or gas cutting gas. By setting the angle of attack accordingly of the nozzles on the underside of the material to be cut or the outflow angle contrary to the cutting direction, the negative pressure zone can be next to the jet outlet area avoided and an outflow of the burning slag against the cutting direction is ensured so that the formation of a beard on the lower edge of the kerf entirely is avoided. Ein Anwendungsbeispiel gemäß der Erfindung ist im Schema in der Folge beschrieben und in Fig. 1 bis F i g. 3 dargestellt. Dabei zeigt F i g. 1 einen Schnitt durch eine Bramme während des Brennschneidens ohne zusätzliche Düsen. F i g. 3 zeigt eine Ansicht des Vorgangs von unten mit zusätzlichen Düsen. An application example according to the invention is shown in the scheme below and in Fig. 1 to F i g. 3 shown. F i g. 1 a section by a slab during flame cutting without additional nozzles. F i g. 3 shows a view of the process from below with additional nozzles. Eine Bramme 1 wird durch einen Schneidbrenner getrennt. Dabei entsteht die Trennfuge 4, und an den Unterkanten der Trennfuge 4 bilden sich die sogenannten Brennbärte (Schlacken) 5. A slab 1 is cut by a cutting torch. This creates the parting line 4, and at the lower edges of the parting line 4, the so-called Beards (slags) 5. Durch Anordnung von zusätzlichen Düsen 6 und 6a, die unter einem Winkel oc auf die Brammenunterkante und unter einem Winkel ß gegen die Brennrichtung einstellbar angeordnet sind, folgt die entstehende Breunschlacke dem Weg Sund fällt nach unten, weil sie durch die Brennerflamme 3 nach dort geblasen wird. By arranging additional nozzles 6 and 6a, which under one Angle oc on the lower edge of the slab and at an angle ß against the firing direction are arranged adjustable, the resulting Breunschlacke follows the way Sund falls down, because it is blown there by the burner flame 3. Wird über die zusätzlichen Düsen Schneidgas mit neutraler Flamme zugeführt, so bewirkt die zusätzliche Wärmezufuhr ein langsameres Erkalten der Schlacke und damit einen leichteren Schlackenabfluß.If cutting gas with a neutral flame is supplied via the additional nozzles, the additional heat supply causes the slag to cool down more slowly and thus easier slag drainage.
DE19782839515 1978-09-11 1978-09-11 Nozzle arrangement to prevent the precipitation of flame slag along the bottom edge of the kerf during flame cutting Ceased DE2839515B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782839515 DE2839515B1 (en) 1978-09-11 1978-09-11 Nozzle arrangement to prevent the precipitation of flame slag along the bottom edge of the kerf during flame cutting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782839515 DE2839515B1 (en) 1978-09-11 1978-09-11 Nozzle arrangement to prevent the precipitation of flame slag along the bottom edge of the kerf during flame cutting

Publications (1)

Publication Number Publication Date
DE2839515B1 true DE2839515B1 (en) 1980-02-21

Family

ID=6049179

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782839515 Ceased DE2839515B1 (en) 1978-09-11 1978-09-11 Nozzle arrangement to prevent the precipitation of flame slag along the bottom edge of the kerf during flame cutting

Country Status (1)

Country Link
DE (1) DE2839515B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336078A (en) * 1979-04-11 1982-06-22 Thyssen Aktiengesellschaft Process and apparatus for the separation of metallurgical products
EP0235588A1 (en) * 1986-03-06 1987-09-09 Messer Griesheim Gmbh Method for the removal of slag whiskers created by flame cutting
EP1737601A2 (en) * 2004-01-23 2007-01-03 EDW.C. Levy CO Steel cutting system and method
DE102015008820A1 (en) * 2015-07-10 2017-01-12 Lubas Maschinen Gmbh Device for cutting machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336078A (en) * 1979-04-11 1982-06-22 Thyssen Aktiengesellschaft Process and apparatus for the separation of metallurgical products
EP0235588A1 (en) * 1986-03-06 1987-09-09 Messer Griesheim Gmbh Method for the removal of slag whiskers created by flame cutting
EP1737601A2 (en) * 2004-01-23 2007-01-03 EDW.C. Levy CO Steel cutting system and method
EP1737601A4 (en) * 2004-01-23 2009-02-11 Edw C Levy Co Steel cutting system and method
DE102015008820A1 (en) * 2015-07-10 2017-01-12 Lubas Maschinen Gmbh Device for cutting machines

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Legal Events

Date Code Title Description
8235 Patent refused