EP1273410A1 - Procédé de traitement au laser pour le surface des plaques en granit ou similaires - Google Patents

Procédé de traitement au laser pour le surface des plaques en granit ou similaires Download PDF

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Publication number
EP1273410A1
EP1273410A1 EP02380152A EP02380152A EP1273410A1 EP 1273410 A1 EP1273410 A1 EP 1273410A1 EP 02380152 A EP02380152 A EP 02380152A EP 02380152 A EP02380152 A EP 02380152A EP 1273410 A1 EP1273410 A1 EP 1273410A1
Authority
EP
European Patent Office
Prior art keywords
granite
laser
treatment method
slabs
slab
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.)
Granted
Application number
EP02380152A
Other languages
German (de)
English (en)
Other versions
EP1273410B1 (fr
Inventor
designation of the inventor has not yet been filed The
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.)
Digafer SA
Universidade de Vigo
Original Assignee
Digafer SA
Universidade de Vigo
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 Digafer SA, Universidade de Vigo filed Critical Digafer SA
Publication of EP1273410A1 publication Critical patent/EP1273410A1/fr
Application granted granted Critical
Publication of EP1273410B1 publication Critical patent/EP1273410B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/221—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by thermic methods
    • 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
    • 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
    • B28D1/006—Artificial ageing of stones; Providing stones with an antique appearance

Definitions

  • the invention refers to a treatment method of granite slabs by means of a laser radiation application, permitting the superficial modification of granite slabs for using in both facades and floorings, obtaining a bushhammered-type surfacing, in other words a surface with a rough surfacing giving the impression of being more rustic and natural.
  • granite has been used for a long time in constructing large public works, buildings, etc., although granite is currently widely used as a decorative element, in other words as a facade siding of large buildings and as both indoor and urban flooring.
  • the alternative to buffed granite is the bushhammered or flamed surfacing since the sawn surfacing is too rough for some applications.
  • the bushhammered granite can successfully be applied to practically all granite varieties and it gives the stone a more rustic and natural surfacing.
  • Flaming consists of a thermal treatment of the surface by means of oxyacetylene burners applied at a 45o inclination with the surface and an approximate flame temperature of 2,800o C.
  • the drawbacks of flaming are the following:
  • the proposed method has been conceived to solve the previously explained drawbacks, being based on a simple yet no less efficient solution, since it is the laser application for treating a natural rock such as granite.
  • granite encompasses not only the rocks geologically considered granites (Rosa Porri o, sylvan varieties), but also others such as gneisses (Rojo Guadajira), gabbros (Negro Villar), diorites (Gris Mondariz, Negro Badajoz) etc..., until reaching more than 80 exploited varieties in Spain alone.
  • the treatment method of the invention basically consists of the following:
  • the basic required condition is that the density of power reached on the granite piece be enough, which is why the most suitable lasers are those from CO 2 , CO, Nd:YAG or diode.
  • the bushhammering or the thus called treatment is carried out by moving either the granite slab or piece against the laser beam or the laser beam in relation to the granite slab or piece, such that, due to the large mass of the commercial granite boards, it is preferable to move the laser beam, the slab remaining stationary, for the purpose of the laser beam sweeping the surface of the granite slab or piece in those areas in which a transformation of the surface condition is desired to be obtained.
  • the laser incidence to the surface of the granite slab can be normal or form a certain angle with it, such that by varying this angle, the type of surfacing can be modified, it even being possible to carry out a continuous modification of that incidence angle, obtaining a surfacing different from the one obtained by maintaining the fixed beam orientation.
  • Said method involves a considerable improvement in the work conditions of the operator processing the granite slabs, greatly eliminating the acoustic and environmental contaminants suffered during the traditional granite slab bushhammering methods.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Floor Finish (AREA)
EP20020380152 2001-07-06 2002-07-05 Procédé de traitement au laser pour le surface des plaques en granit ou similaires Expired - Lifetime EP1273410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200101590 2001-07-06
ES200101590A ES2180450B1 (es) 2001-07-06 2001-07-06 Metodo de tratamiento por laser de la superficie de placas de granito o similares.

Publications (2)

Publication Number Publication Date
EP1273410A1 true EP1273410A1 (fr) 2003-01-08
EP1273410B1 EP1273410B1 (fr) 2013-01-23

Family

ID=8498330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020380152 Expired - Lifetime EP1273410B1 (fr) 2001-07-06 2002-07-05 Procédé de traitement au laser pour le surface des plaques en granit ou similaires

Country Status (3)

Country Link
EP (1) EP1273410B1 (fr)
ES (1) ES2180450B1 (fr)
PT (1) PT1273410E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920108A1 (fr) * 2007-08-21 2009-02-27 Pierart Sas Soc Par Actions Si Procede de realisation d'un ornement en pierre et ornement en pierre a face flammee et brossee

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1916430A (en) * 1931-05-21 1933-07-04 Larue Emile Water pressure cleaner
US2781754A (en) * 1955-12-19 1957-02-19 Union Carbide & Carbon Corp Thermal texturing of rock
JPH0692754A (ja) * 1992-09-10 1994-04-05 Taisei Corp 花崗岩の表面凹凸処理方法
DE19715937C1 (de) * 1997-04-16 1998-11-05 Fraunhofer Ges Forschung Verfahren zur Herstellung rutschfester Fußbodenbeläge
WO1999042242A1 (fr) * 1998-02-19 1999-08-26 Universidad De Vigo Traitement d'ardoise par laser
DE19843498A1 (de) * 1998-09-22 2000-03-30 Thomas Sievers Oberflächenbehandelte mineralische Werkstoffe und Verfahren zu ihrer Herstellung
US6167879B1 (en) * 1995-05-18 2001-01-02 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Process for producing non-slip floor covering

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8112615U1 (de) * 1981-04-29 1982-10-28 Brunnhöfer, Fritz, 8501 Schwaig Selbstklebefolie
FR2589780B1 (fr) * 1985-11-08 1988-02-19 Ouest Tolerie Procede de decoupage de ceramiques et ceramiques decoupees obtenues ainsi que leurs assemblages.
DE4133620C1 (fr) * 1991-10-10 1993-04-22 Maho Ag, 8962 Pfronten, De
GB2296788B (en) * 1995-11-28 1997-03-12 Stonemate Ltd Method and apparatus for image transfer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1916430A (en) * 1931-05-21 1933-07-04 Larue Emile Water pressure cleaner
US2781754A (en) * 1955-12-19 1957-02-19 Union Carbide & Carbon Corp Thermal texturing of rock
JPH0692754A (ja) * 1992-09-10 1994-04-05 Taisei Corp 花崗岩の表面凹凸処理方法
US6167879B1 (en) * 1995-05-18 2001-01-02 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Process for producing non-slip floor covering
DE19715937C1 (de) * 1997-04-16 1998-11-05 Fraunhofer Ges Forschung Verfahren zur Herstellung rutschfester Fußbodenbeläge
WO1999042242A1 (fr) * 1998-02-19 1999-08-26 Universidad De Vigo Traitement d'ardoise par laser
DE19843498A1 (de) * 1998-09-22 2000-03-30 Thomas Sievers Oberflächenbehandelte mineralische Werkstoffe und Verfahren zu ihrer Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199418, Derwent World Patents Index; Class L02, AN 1994-147778, XP002216428 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920108A1 (fr) * 2007-08-21 2009-02-27 Pierart Sas Soc Par Actions Si Procede de realisation d'un ornement en pierre et ornement en pierre a face flammee et brossee

Also Published As

Publication number Publication date
ES2180450A1 (es) 2003-02-01
EP1273410B1 (fr) 2013-01-23
ES2180450B1 (es) 2004-10-16
PT1273410E (pt) 2013-04-26

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