EP0229318A1 - Method for the flame blasting of natural and/or artificial kinds of rock - Google Patents

Method for the flame blasting of natural and/or artificial kinds of rock Download PDF

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Publication number
EP0229318A1
EP0229318A1 EP19860117161 EP86117161A EP0229318A1 EP 0229318 A1 EP0229318 A1 EP 0229318A1 EP 19860117161 EP19860117161 EP 19860117161 EP 86117161 A EP86117161 A EP 86117161A EP 0229318 A1 EP0229318 A1 EP 0229318A1
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EP
European Patent Office
Prior art keywords
movement
burner
flame
rock
kinds
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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
EP19860117161
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German (de)
French (fr)
Inventor
Helmut Dipl.-Ing. Meinass
Peter Heinrich
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Linde GmbH
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Linde GmbH
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Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP0229318A1 publication Critical patent/EP0229318A1/en
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor

Definitions

  • the invention relates to a method for flame blasting natural and / or artificial stone types, in which high-energy fuel gas-oxygen flames are generated with the aid of a burner guided over the stone types to be processed and a large amount of heat is briefly applied to the stone types to be processed.
  • burners operated with acetylene-oxygen mixtures or burners operated with methyl acetylene-propadiene-oxygen mixtures with a plurality of burner nozzles arranged in parallel alongside one another in the direction of the flame outflow direction over the workpiece surface to be treated at feed rates between 0.5 up to about 1.5 m / min :. to move, the flame outflow direction approximately. is held at an angle of 45 ° to the workpiece surface.
  • the action of the flame in the uppermost rock zone causes the rQ quartz to explode and scrape off as a result of the transformation of the crystals and a melting of rock parts, which then solidify like glass and adhere relatively loosely to the surface.
  • the burner is guided along parallel paths.
  • the F lamb deviates jet action from the inside of a train either stops a land or a groove is created. In this way, stripes are visible when the light falls in at an angle, which is disruptive on decorative granite slabs.
  • the invention is therefore based on the object of specifying a method of the type described at the outset in which surfaces of natural and / or artificial types of stone processed with flame jet burners are streak-free.
  • This object is achieved in that the feed movement of the burner is superimposed on a movement oriented perpendicular to this movement and taking place in a plane which is essentially parallel to the surface of the stone types to be processed, with an alternating direction of movement.
  • a flame jet burner is no longer moved along a straight path. Rather, the burner is guided along curves in such a way that the burner executes an oscillating movement due to a movement superimposed on the linear feed movement with changing direction of movement. However, the burner is still guided so that the individual flame jet trajectories are parallel to each other and just touch.
  • the curving burner guide heats the stone crystals on the edge zones of the flame jet trajectories from different directions, so that the deposits are irregular. A stripe structure cannot therefore form.
  • the flame outflow direction of the burner can be set parallel or obliquely to the feed movement of the burner (perpendicular or oblique position of the flame front to the feed direction).
  • the flame outflow direction can be set to be slow or piercing for the feed movement of the burner.
  • the burner guide switches particularly easily if the direction of the superimposition movement is changed periodically.
  • the flame output per unit area is kept constant by preferably adjusting the speed of the burner accordingly.
  • the feed rate can be kept constant.
  • acetylene is used as the fuel gas, it has proven advantageous in one embodiment of the invention if the mixing ratio of acetylene to oxygen is in the range between 1: 2.2 and 1: 3.2. With such a mixing ratio, no residues arise. In addition, the secondary flame remains small.
  • the distance to the surface to be treated is kept constant.
  • the distance h is preferably kept within a range of - 1.5 mm. In this way, the burner output is uniformly large across the entire burner width. Skids or a sensor-controlled distance regulation can be used to keep the distance constant.
  • a flame jet burner 1 is guided over a granite slab 2 at a constant distance. Devices for keeping the distance between burner 1 and granite slab 2 constant are not shown. According to FIG. 1, the flame jet burner is carried over the granite slab 2 in a sluggish position. An arrow 3 indicates the direction of the flame. In Figure 2 it is indicated that the flame outflow is directed parallel to the forward movement of the flame jet burner.
  • the flame jet burner 1 was guided over the granite plate 2 along a straight line.
  • the flame front has the width a. Due to the size of the granite slab, it is necessary to cover the surface in several flame blasting parallel paths.
  • Strips of this type which have a disruptive effect when the light enters at an angle, are not formed in the method according to the invention.
  • the feed speed 4 of the flame jet burner is superimposed on a second movement.
  • the corresponding speed component 5 is directed perpendicular to the feed speed 4 and parallel to the granite slab surfaces and changes its direction (indicated by arrow 6).
  • the result is a resulting speed 7 and a movement of the flame jet burner 1 that oscillates with respect to the feed.
  • the transition areas of the flame traces 8 are designated by 9.
  • the reference number 10 denotes a number of normal to the edge zone of a web 8 influenced by heat. The direction of the normals changes periodically.
  • the curved burner guide heats the granite crystals on the edge zones of the tracks from different directions, so that the deposits are irregular. A stripe structure cannot therefore form.
  • the flame jet burner can be water-cooled from the inside to prevent the build-up of liquid granite.
  • the feed movement is always in one direction.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Gas Burners (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The method involves producing high-energy fuel-oxygen flames by means of a burner (1) passed over the kinds of rock to be treated, briefly applying a high amount of heat to them. To ensure that surfaces of natural and/or artificial kinds of rock treated with such flame-blasting burners (1) are free from streaks, it is proposed to superimpose on the advancing movement (4) of the burner (1) a movement (5) oriented perpendicularly to this movement and performed with alternating direction of movement in a plane substantially parallel to the surface of the kinds of rock to be treated. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Flammstrahlen von natürlichen und/oder künstlichen Steinarten, bei dem mit Hilfe eines über die zu bearbeitenden Steinarten geführten Brenners hochenergetische Brenngas-Sauerstoff-Flammen erzeugt werden und kurzzeitig eine hohe Wärmemenge auf die zu bearbeitenden Steinarten aufgebracht wird.The invention relates to a method for flame blasting natural and / or artificial stone types, in which high-energy fuel gas-oxygen flames are generated with the aid of a burner guided over the stone types to be processed and a large amount of heat is briefly applied to the stone types to be processed.

Zum Flammstrahlen von Beton- oder Granitplatten ist es bekannt, beispielsweise mit Azetylen-Sauerstoff-Gemischen oder mit Methylazetylen-Propadien-Sauerstoff-Gemischen betriebene Brenner mit mehreren parallel nebeneinander angeordneten Brennerdüsen in Richtung der Flammenausströmrichtung über die zu behandelnde Werkstückoberfläche mit Vorschubgeschwindigkeiten zwischen 0,5 bis etwa 1,5 m/min:. zu bewegen, wobei die Flammenausströmrichtung in etwa. in einem Winkel von 45° zur Werkstückoberfläche gehalten wird. Durch die Einwirkung der Flamme erfolgt in der obersten Gesteinszone ein Sprengen und Abspratzen des rQuarzes infolge Umwandlung der Kristalle sowie ein Schmelzen von Gesteinsteilen, die anschließend glasartig erstarren und verhältnismäßig lose auf der Oberfläche haften.For flame blasting of concrete or granite slabs, it is known, for example burners operated with acetylene-oxygen mixtures or burners operated with methyl acetylene-propadiene-oxygen mixtures, with a plurality of burner nozzles arranged in parallel alongside one another in the direction of the flame outflow direction over the workpiece surface to be treated at feed rates between 0.5 up to about 1.5 m / min :. to move, the flame outflow direction approximately. is held at an angle of 45 ° to the workpiece surface. The action of the flame in the uppermost rock zone causes the rQ quartz to explode and scrape off as a result of the transformation of the crystals and a melting of rock parts, which then solidify like glass and adhere relatively loosely to the surface.

Zur Bearbeitung größerer Platten wird der Brenner entlang parallel liegender Bahnen geführt. In der übergangszone zwischen zwei Flammstrahlbahnen weicht die Flamm- strahlwirkung von der im Inneren einer Bahn ab: Entweder bleibt ein Steg stehen oder es entsteht eine Rille. Dadurch werden bei schrägem Lichteinfall Streifen sichtbar, die auf dekorativen Granitplatten störend wirken.To process larger plates, the burner is guided along parallel paths. In the transition zone between two scarfing paths, the F lamb deviates jet action from the inside of a train either stops a land or a groove is created. In this way, stripes are visible when the light falls in at an angle, which is disruptive on decorative granite slabs.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren der eingangs geschilderten Art anzugeben, bei dem mit Flammstrahlbrennern bearbeitete Oberflächen von natürlichen und/oder künstlichen Steinarten streifenfrei sind.The invention is therefore based on the object of specifying a method of the type described at the outset in which surfaces of natural and / or artificial types of stone processed with flame jet burners are streak-free.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Vorschubbewegung des Brenners eine zu dieser Bewegung senkrecht orientierte, in einer zur Oberfläche der zu bearbeitenden Steinarten im wesentlichen parallelen Ebene erfolgende Bewegung mit wechselnder Bewegungsrichtung überlagert wird.This object is achieved in that the feed movement of the burner is superimposed on a movement oriented perpendicular to this movement and taking place in a plane which is essentially parallel to the surface of the stone types to be processed, with an alternating direction of movement.

Erfindungsgemäß wird ein Flammstrahl-Brenner nicht mehr entlang einer geraden Bahn bewegt. Die Brennerführung erfolgt vielmehr entlang von Kurven derart, daß der Brenner aufgrund einer der linearen Vorschubbewegung überlagerten Bewegung mit wechselnder Bewegungsrichtung eine Pendelbewegung ausführt. Nach wie vor wird der Brenner dabei jedoch so geführt, daß die einzelnen Flammstrahlbahnen parallel zueinander liegen und sich gerade berühren.According to the invention, a flame jet burner is no longer moved along a straight path. Rather, the burner is guided along curves in such a way that the burner executes an oscillating movement due to a movement superimposed on the linear feed movement with changing direction of movement. However, the burner is still guided so that the individual flame jet trajectories are parallel to each other and just touch.

Durch die kurvige Brennerführung werden die Steinkristalle an den Randzonen der Flammstrahlbahnen aus unterschiedlichen Richtungen erhitzt, so daß die Abspratzungen unregelmäßig sind. Eine Streifenstruktur kann sich deshalb nicht bilden.The curving burner guide heats the stone crystals on the edge zones of the flame jet trajectories from different directions, so that the deposits are irregular. A stripe structure cannot therefore form.

Beim erfindungsgemäßen Verfahren kann die Flammenausströmrichtung des Brenners parallel oder schräg zur Vorschubbewegung des Brenners eingestellt sein (senkrechte oder schräge Stellung der Flammenfront zur Vorschubrichtung). Außerdem kann die Flammenausströmrichtung schleppend oder stechend zur Vorschubbewegung des Brenners eingestellt sein.In the method according to the invention, the flame outflow direction of the burner can be set parallel or obliquely to the feed movement of the burner (perpendicular or oblique position of the flame front to the feed direction). In addition, the flame outflow direction can be set to be slow or piercing for the feed movement of the burner.

Die Brennerführung schaltet sich nach einer bevorzugten Ausgestaltung der Erfindung besonders einfach, wenn die Richtung der Uberlagerungsbewegung periodisch gewechselt wird.According to a preferred embodiment of the invention, the burner guide switches particularly easily if the direction of the superimposition movement is changed periodically.

In einer weiteren bevorzugten Ausgestaltung der Erfindung wird die Flammenleistung je Flächeneinheit konstant gehalten, in dem vorzugsweise die Geschwindigkeit des Brenners entsprechend abgestimmt wird. Beispielsweise kann die Vorschubgeschwindigkeit konstant gehalten werden.In a further preferred embodiment of the invention, the flame output per unit area is kept constant by preferably adjusting the speed of the burner accordingly. For example, the feed rate can be kept constant.

Wird als Brenngas Azetylen verwendet, so hat es sich in einer Ausgestaltung der Erfindung als günstig erwiesen, wenn das Mischungsverhältnis von Azetylen zu Sauerstoff im Bereich zwischen 1 : 2,2 und 1 : 3,2 liegt. Bei einem derartigen Mischungsverhältnis entstehen keine Rückstände. Außerdem bleibt die Sekundärflamme klein.If acetylene is used as the fuel gas, it has proven advantageous in one embodiment of the invention if the mixing ratio of acetylene to oxygen is in the range between 1: 2.2 and 1: 3.2. With such a mixing ratio, no residues arise. In addition, the secondary flame remains small.

In einer weiteren Ausgestaltung der Erfindung hat es sich als zweckmäßig erwiesen, wenn der Abstand zu der zu behandelnden Oberfläche konstant gehalten wird. Bevorzugt wird-der Abstand h innerhalb eines Bereiches von - 1,5 mm gehalten. Auf diese Weise ist die Brennerleistung über die gesamte Brennerbreite gleichmäßig groß. Zur Könstanthaltung des Abstandes können Kufen oder kann eine sensorgesteuerte Abstandsregulierung verwendet werden.In a further embodiment of the invention, it has proven expedient if the distance to the surface to be treated is kept constant. The distance h is preferably kept within a range of - 1.5 mm. In this way, the burner output is uniformly large across the entire burner width. Skids or a sensor-controlled distance regulation can be used to keep the distance constant.

Selbstverständlich wird die erfindungsgemäße Aufgabe auch gelöst, wenn der Brenner ruht und das zu bearbeitende Werkstück in der erfindungsgemäßen Weise relativ zum Brenner bewegt wird.Of course, the object of the invention also solved when the burner is at rest and the workpiece to be machined is moved relative to the burner in the manner according to the invention.

Zusammenfassend ist festzustellen, daß durch das vorgeschlagene Verfahren mit Flammstrahllinienbrennern eine streifenfreie Qualität erzielt werden kann. Brennerspuren sind nicht sichtbar. Somit entstehen auch keine sichtbaren Streifen an den Ubergangszonen der einzelnen Brennerbahnen.In summary, it can be stated that the proposed method with flame jet line burners enables streak-free quality to be achieved. Burner traces are not visible. This means that there are no visible stripes at the transition zones of the individual burner tracks.

Im folgenden sei anhand einer schematischen Skizze ein Ausführungsbeispiel der Erfindung erläutert werden.An exemplary embodiment of the invention will be explained below with the aid of a schematic sketch.

Es zeigen:

  • Figuren 1 und 2 eine schematische Darstellung der Führung eines Flammstrahlbrenners,
  • Figur 3 eine.Komponentendarstellung der Brennergeschwindigkeet.
Show it:
  • FIGS. 1 and 2 show a schematic representation of the guidance of a flame jet burner,
  • FIG. 3 shows a component representation of the burner speed.

Ein Flammstrahlbrenner 1 wird in konstantem Abstand über eine Granitplatte 2 geführt. Vorrichtungen zum Konstanthalten des Abstandes zwischen Brenner 1 und Granitplatte 2 sind nicht dargestellt. Gemäß Figur 1 wird der Flammstrahlbrenner in schleppender Haltung über die Granitplatte 2 geführt. Ein Pfeil 3 deutet die Flammstrahlrichtung an. In Figur 2 ist angedeutet, daß die Flammenausströmung parallel zur Vorwärtsbewegung des Flammstrahlbrenners gerichtet ist.A flame jet burner 1 is guided over a granite slab 2 at a constant distance. Devices for keeping the distance between burner 1 and granite slab 2 constant are not shown. According to FIG. 1, the flame jet burner is carried over the granite slab 2 in a sluggish position. An arrow 3 indicates the direction of the flame. In Figure 2 it is indicated that the flame outflow is directed parallel to the forward movement of the flame jet burner.

Herkömmlicherweise wurde der Flammstrahlbrenner 1 über die Granitplatte 2 entlang einer Geraden geführt. Die Flammenfront hat die Breite a. Aufgrund der Größe der Granitplatte ist es notwendig, die Oberfläche in mehreren parallel zueinander liegenden Bahnen flammzustrahlen.Conventionally, the flame jet burner 1 was guided over the granite plate 2 along a straight line. The flame front has the width a. Due to the size of the granite slab, it is necessary to cover the surface in several flame blasting parallel paths.

Wie bereits erläutert bleibt bei dieser Verfahrensweise in der Ubergangszone zwischen 2 Flammstrahlbahnen entweder ein Steg stehen oder es entsteht eine Rille.As already explained, with this procedure either a web remains in the transition zone between two flame beam paths or a groove is formed.

Derartige Streifen, die bei schrägem Lichteinfall störend wirken, werden beim erfindungsgemäßen Verfahren nicht gebildet.Strips of this type, which have a disruptive effect when the light enters at an angle, are not formed in the method according to the invention.

Erfindungsgemäß wird (siehe Figur 3) der Vorschubgeschwindigkeit 4 des Flammstrahlbrenners eine zweite Bewegung überlagert. Die entsprechende Geschwindigkeitskomponente 5 ist senkrecht zur Vorschubgeschwindigkeit 4 und parallel zur Granitplattenoberflächen gerichtet und wechselt ihre Richtung (angedeutet durch Pfeil 6). Es ergibt sich eine resultierende Geschwindigkeit 7 sowie eine bezüglich des Vorschubs pendelnde Bewegung des Flammstrahlbrenners 1.According to the invention (see FIG. 3), the feed speed 4 of the flame jet burner is superimposed on a second movement. The corresponding speed component 5 is directed perpendicular to the feed speed 4 and parallel to the granite slab surfaces and changes its direction (indicated by arrow 6). The result is a resulting speed 7 and a movement of the flame jet burner 1 that oscillates with respect to the feed.

In Figur 2 sind mehrere Bahnen eingezeichnet. In dieser Ausführungsform wechselt die Überlagerungsbewegung ihre Richtung periodisch, so daß sich ein sinusförmiger Verlauf der Flammbahnen 8 ergibt.Several tracks are shown in FIG. 2. In this embodiment, the superimposition movement changes its direction periodically, so that there is a sinusoidal course of the flame paths 8.

Die Ubergangsbereiche der Flammenbahnen 8 sind mit 9 bezeichnet. Mit Bezugszeichen 10 sind mehrere N.ormalen auf die Randzone einer wärmebeeinflußten Bahn 8 bezeichnet. Die Richtung der Normalen wechselt periodisch. Durch die kurvige Brennerführung werden die Granitkristalle an den Randzonen der Bahnen aus unterschiedlichen Richtungen erhitzt, so daß die Abspratzungen unregelmäßig sind. Eine Streifenstruktur kann sich deshalb nicht bilden.The transition areas of the flame traces 8 are designated by 9. The reference number 10 denotes a number of normal to the edge zone of a web 8 influenced by heat. The direction of the normals changes periodically. The curved burner guide heats the granite crystals on the edge zones of the tracks from different directions, so that the deposits are irregular. A stripe structure cannot therefore form.

Der Flammstrahlbrenner kann von innen wassergekühlt sein um ein Ansetzen von flüssigem Granit zu unterbinden. Die Vorschubbewegung erfolgt immer in eine Richtung.The flame jet burner can be water-cooled from the inside to prevent the build-up of liquid granite. The feed movement is always in one direction.

Claims (5)

1. Verfahren zum Flammstrahlen von natürlichen und/oder künstlichen Steinarten, bei dem mit Hilfe eines über die zu bearbeitenden Steinarten geführten Brenners hochenergetische Brenngas-Sauerstoff-Flammen erzeugt werden und kurzzeitig eine hohe Wärmemenge auf die zu bearbeitenden Steinarten aufgebracht wird, dadurch gekennzeichnet, daß der Vorschubbewegung des Brenners eine zu dieser Bewegung senkrecht orientierte, in einer zur Oberfläche der zu bearbeitenden Steinarten im wesentlichen parallelen Ebene erfolgende Bewegung mit wechselnder Bewegungsrichtung überlagert wird.1. A method for flame blasting of natural and / or artificial stone types, in which high-energy fuel gas-oxygen flames are generated with the aid of a burner guided over the stone types to be processed and a high amount of heat is briefly applied to the stone types to be processed, characterized in that the feed movement of the burner is superimposed on a movement oriented perpendicular to this movement and taking place in a plane which is essentially parallel to the surface of the stone types to be worked, with a changing direction of movement. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Richtung der Uberlagerungsbewegung periodisch gewechselt wird.2. The method according to claim 1, characterized in that the direction of the superimposition movement is changed periodically. 3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Flammenleistungje Flächeneinheit konstant gehalten wird.3. The method according to any one of claims 1 or 2, characterized in that the Fl ammenleistungje unit area is kept constant. 4. Verfahren nach einem der Ansprüche 1 bis 3, wobei als Brenngas Azetylen verwendet wird, dadurch gekennzeichnet, daß das Mischungsverhältnis von Azetylen zu Sauerstoff 1 : 2,2 bis 1 : 3,2 beträgt. 4th Method according to one of claims 1 to 3, wherein acetylene is used as the fuel gas, characterized in that the mixing ratio of acetylene to oxygen is 1: 2.2 to 1: 3.2. 5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Abstand zur zu behandelnden Oberfläche konstant gehalten wird.5. The method according to any one of claims 1 to 4, characterized in that the distance to the surface to be treated is kept constant.
EP19860117161 1985-12-19 1986-12-09 Method for the flame blasting of natural and/or artificial kinds of rock Ceased EP0229318A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3545064 1985-12-19
DE19853545064 DE3545064A1 (en) 1985-12-19 1985-12-19 METHOD FOR FLAME BLASTING NATURAL AND / OR ARTIFICIAL STONES

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EP0229318A1 true EP0229318A1 (en) 1987-07-22

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PT (1) PT83948A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621277A1 (en) * 1986-06-25 1988-01-07 Aicheler & Braun Gmbh Betonwer Device for flame treating the surfaces of newly shaped slabs of concrete
DE4036909A1 (en) * 1990-11-20 1992-05-21 Linde Ag Ceramic surface treatment - by applying flame fuelled by combustion gas and oxygen@ to roughen surface structure during mfr.
US5211156A (en) * 1989-05-03 1993-05-18 Universite De Sherbrooke Method and apparatus for treating a surface of granite with a high temperature plasma jet
WO2006011006A1 (en) * 2004-07-16 2006-02-02 Keser Diva Design S.P.A. A process for imitating irregular and eroded edges of natural rock and archaeological remains in ceramic tiles and slabs
EP2105275A2 (en) 2008-03-28 2009-09-30 MAEMA S.r.l. Method and multiple-tool apparatus for surface flaming of stone or stone-like products

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933843A1 (en) * 1989-10-10 1991-04-18 Hofmann Hermann METHOD AND DEVICE FOR PROCESSING STONE SURFACES BY BURNING OR STICKING
DE19518270C1 (en) 1995-05-18 1996-08-22 Fraunhofer Ges Forschung Non-slip polished floor covering
DE19715937C1 (en) 1997-04-16 1998-11-05 Fraunhofer Ges Forschung Process for the production of non-slip floor coverings
EP1743740B1 (en) 2005-07-14 2007-08-15 Haid, Rosa Maria Process and device for floor coverings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781754A (en) * 1955-12-19 1957-02-19 Union Carbide & Carbon Corp Thermal texturing of rock
US3885066A (en) * 1972-11-24 1975-05-20 Ppg Industries Inc Method for coating continuously advancing substrate
CH599845A5 (en) * 1976-06-24 1978-05-31 Come Rene Pollico Calcareous kerbstone appearance restoration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781754A (en) * 1955-12-19 1957-02-19 Union Carbide & Carbon Corp Thermal texturing of rock
US3885066A (en) * 1972-11-24 1975-05-20 Ppg Industries Inc Method for coating continuously advancing substrate
CH599845A5 (en) * 1976-06-24 1978-05-31 Come Rene Pollico Calcareous kerbstone appearance restoration

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621277A1 (en) * 1986-06-25 1988-01-07 Aicheler & Braun Gmbh Betonwer Device for flame treating the surfaces of newly shaped slabs of concrete
US5211156A (en) * 1989-05-03 1993-05-18 Universite De Sherbrooke Method and apparatus for treating a surface of granite with a high temperature plasma jet
DE4036909A1 (en) * 1990-11-20 1992-05-21 Linde Ag Ceramic surface treatment - by applying flame fuelled by combustion gas and oxygen@ to roughen surface structure during mfr.
WO2006011006A1 (en) * 2004-07-16 2006-02-02 Keser Diva Design S.P.A. A process for imitating irregular and eroded edges of natural rock and archaeological remains in ceramic tiles and slabs
EP2105275A2 (en) 2008-03-28 2009-09-30 MAEMA S.r.l. Method and multiple-tool apparatus for surface flaming of stone or stone-like products
EP2105275A3 (en) * 2008-03-28 2012-01-25 MAEMA S.r.l. Method and multiple-tool apparatus for surface flaming of stone or stone-like products

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PT83948A (en) 1987-08-19
DE3545064A1 (en) 1987-06-25

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