EP2612073A1 - Tête de chalumeau pour le décriquage de brames à la flamme - Google Patents

Tête de chalumeau pour le décriquage de brames à la flamme

Info

Publication number
EP2612073A1
EP2612073A1 EP10721835.6A EP10721835A EP2612073A1 EP 2612073 A1 EP2612073 A1 EP 2612073A1 EP 10721835 A EP10721835 A EP 10721835A EP 2612073 A1 EP2612073 A1 EP 2612073A1
Authority
EP
European Patent Office
Prior art keywords
group
scarfing
holes
heating
bores
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.)
Withdrawn
Application number
EP10721835.6A
Other languages
German (de)
English (en)
Inventor
Horst K. Lotz
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.)
Gesellschaft fur Autogenmaschinen und -Gerate Mbh
Original Assignee
Gesellschaft fur Autogenmaschinen und -Gerate Mbh
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 Gesellschaft fur Autogenmaschinen und -Gerate Mbh filed Critical Gesellschaft fur Autogenmaschinen und -Gerate Mbh
Publication of EP2612073A1 publication Critical patent/EP2612073A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/56—Nozzles for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening, or for heating workpieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration

Definitions

  • the invention relates to a scarfing head for scarfing the surfaces of slabs produced by casting, having a plurality of annular groups of outlet openings coaxial with the center
  • Flämmkexcellent be used in Flämmtechnikn that are entwe ⁇ ⁇ formed as a machine or as Handflämmtechnik. Flaming work is necessary in particular for smoothing and cleaning slab surfaces. Upon cooling, the slab produced by casting often undesirable cracks are ent ⁇ removed by a surface treatment, namely, the scarfing form on the surface thereof. This also applies to burrs or beards, the processing of the slabs, z. B. by flame cutting arise. The flame burner used are led to the elimination of surface defects along the betroffe ⁇ NEN surfaces.
  • Gas burners which have a plurality of tubes arranged coaxially with one another for an oxygen supply. have, which are surrounded by several round tubes arranged for a fuel gas supply.
  • a gas burner nozzle for Flämmin with a central, consisting of several tubes ⁇ ren oxygen supply and with several ⁇ ren around said oxygen supply tubes arranged for the supply of fuel gas.
  • the pipes for the SAuerstoffzuschreib are respectively arranged in groups, the individual groups and coaxially be ⁇ abstandet are arranged to each other and each set of Minim ⁇ least two annularly arranged rows of tubes be ⁇ stands.
  • the gas burner nozzle is characterized by three groups of tubes for oxygen supply.
  • a major disadvantage of this gas burner nozzle is that the oxygen is supplied via tubes, which are grouped together.
  • the introduction of the many ⁇ number of tubes in the gas burner nozzle body is extremely complex and material and cost intensive. Accordingly, all tubes must be soldered individually into the nozzle body. As a result, the production of this gas burner nozzle is very expensive.
  • Another disadvantage is that the groups of tubes each consist of at least two or even three annularly arranged rows of tubes. As is known, when scarfing the slab forms a
  • the object of the invention to provide a Flämmkopf the way a ⁇ initially mentioned, which allows for .wei ⁇ se low Flämmsauerstoffflex an excellent surface quality of the slab to flämmenden and which is cost and production technically economical to produce.
  • the object is achieved in that the outlet openings and the heating openings are formed as Bohrun ⁇ conditions in the scarfing head body, and that while keeping the central portion around the ⁇ center co ⁇ centered and spaced from each other a mitt ⁇ lere group of holes and coaxial and spaced around this an outer group of holes for scavenging ⁇ oxygen are arranged.
  • the scarfing head he ⁇ considerably easier and cheaper to produce.
  • the holes are easy and without much effort in the Flämmkopf redesign bring in as pipes that sepa ⁇ rat must be made and soldered.
  • the outer group consists of two rows of annularly arranged holes.
  • the aim is to achieve a broader flame bath, ie an optimal one To create ratio of liquid slag and iron material on the workpiece in front of the flame.
  • ⁇ sen that the outer group be ⁇ is made up of two rows of holes, thus results a wider Flämmbad, re ⁇ rum produces a wider Flämm Society.
  • the flame bath is extended by about 20%. This ultimately leads to a significant production and productivity ⁇ increase.
  • an inner group of holes for scavenger oxygen can be arranged. This is ultimately dependent on the desired intensity of the flame and the nature of the material to be fluffed and the surface quality of the slab.
  • the inner group, the medium surrounding the latter group and the outer group of holes can each have a separate Flämmsauer ⁇ fuel supply.
  • the inner group of holes forms a first one
  • Fig. 1 is an end view of the invention
  • Fig. 3 is an end view of the scarfing head in egg ⁇ ner third embodiment
  • FIG. 4 is a side view in section of the scarfing head of FIG .. 3
  • the scarfing head serves to scour the surfaces of slabs produced by casting and has a plurality of annularly arranged groups of coaxial with the center point ⁇ arranged outlet openings for flame oxygen and at least one outermost round the groups of outlet openings arranged ring of heating openings for the heating gas and heating oxygen supply.
  • all outlet and heating openings are formed as holes from ⁇ .
  • the Flämmkopf 1 according to FIGS. 1 to 4 has a zy ⁇ -cylindrical cross-section.
  • two rows are formed 2 and 3 of small i ⁇ NEN holes 4, which are provided for the outflow of heating gas and heating oxygen.
  • the Strö ⁇ flow direction is, in Fig. 4 by arrow Darge ⁇ , wherein the flow direction for all holes in the Flämmkopf 1 is the same.
  • Flämmgraphic II which consists of a round center around the center coaxial and spaced middle group 5 of holes 6 for Flämmsauerstoff. Will surround this middle group 5 of the Flämmhand III, which is from a ⁇ be coaxially and spaced apart externa ⁇ ßeren group 7 of holes 8 for Flämmsauerstoff. Furthermore, the outer group 7 of the
  • Flämma III another annular series of drilling ments 8, so that the scarfing stage III and thus the outer group 7 comprises two rows of holes 8.
  • the embodiment of the Flämmkopfes 1 according to Fig. 3 to ⁇ also combines all three Flämmlien I, II and II.
  • I is the Flämmread from the coaxially arranged around the center inner group 9 of bores 10
  • the surrounding this Flämmhand II arranged from the coaxial middle group 5 of holes 6 and turn surrounding this Flämmhand III with the äuße ⁇ ren group 7 of holes 8, said group 7 has a further annular row of holes 8, so that the scarfing stage III and thus the outer group 7 two rows of holes 8 includes.
  • the scarfing head 1 according to FIG. 4 has a pre-block 14 with a central Flämmsauerstoffzucht 11 to the holes 10 of the inner group 9 of the Flämmhand I. Furthermore, a coaxial thereto Flämmsauerstoffzucht 12 to the holes 6 of the medium ⁇ ren group 5 of the Flämmhand II and a
  • FlämmsauerstoffZu unit 13 both rows of holes 8.
  • Each of the three FlämmsauerstoffZu Entryen 11, 12 and 13 can be controlled separately, so that the gas velocity in the individual holes 6, 8 and 10 is controlled accordingly.

Landscapes

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

Abstract

L'invention concerne une tête de chalumeau (1) pour le décriquage à la flamme de surfaces de brames coulées, cette tête comprenant plusieurs groupes (5,7,9) annulaires d'ouvertures de sortie, disposées de manière coaxiale au point central, pour la projection d'oxygène de décriquage, et au moins une rangée (2,3) extérieure d'ouvertures de chauffage, disposées tout autour des groupes (5,7,9) et destinées à l'alimentation en gaz de chauffage et en oxygène de chauffage. Selon l'invention, les ouvertures de sortie et les ouvertures de chauffage sont des trous (4, 6, 8, 10) formés dans le corps de la tête de chalumeau. La partie centrale restant libre, un groupe médian (5) de trous (6) est disposé de manière coaxiale tout autour du point central, les trous étant espacés les uns des autres, et un groupe extérieur (7) de trous (8) est disposé de manière coaxiale et à une certaine distance du premier groupe, pour la projection d'oxygène de décriquage à la flamme.
EP10721835.6A 2010-06-11 2010-06-11 Tête de chalumeau pour le décriquage de brames à la flamme Withdrawn EP2612073A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/058191 WO2011154043A1 (fr) 2010-06-11 2010-06-11 Tête de chalumeau pour le décriquage de brames à la flamme

Publications (1)

Publication Number Publication Date
EP2612073A1 true EP2612073A1 (fr) 2013-07-10

Family

ID=43825148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10721835.6A Withdrawn EP2612073A1 (fr) 2010-06-11 2010-06-11 Tête de chalumeau pour le décriquage de brames à la flamme

Country Status (2)

Country Link
EP (1) EP2612073A1 (fr)
WO (1) WO2011154043A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105144A1 (de) 2015-04-02 2016-10-06 Gefam Gmbh Flämmkopf

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239903C1 (de) * 1992-11-27 1994-06-30 Franz Kuenzli Ag Wangen Injektor-Mundstück für Brenneraggregate
AU7542998A (en) * 1998-05-26 1999-12-13 Heckett Multiserv France Sa Surface treatment of hot metal articles
US6604937B1 (en) * 2002-05-24 2003-08-12 Praxair Technology, Inc. Coherent jet system with single ring flame envelope
JP2004284886A (ja) * 2003-03-24 2004-10-14 Shin Etsu Chem Co Ltd 合成石英ガラス製造用バーナー
DE202006008760U1 (de) * 2006-06-02 2007-10-04 Egon Evertz Kg (Gmbh & Co.) Gasbrennerdüse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011154043A1 *

Also Published As

Publication number Publication date
WO2011154043A1 (fr) 2011-12-15

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