EP0332956A2 - Procédé et dispositif pour poncer et/ou polir une laque à des températures inférieures à la température ambiante - Google Patents

Procédé et dispositif pour poncer et/ou polir une laque à des températures inférieures à la température ambiante Download PDF

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Publication number
EP0332956A2
EP0332956A2 EP19890103822 EP89103822A EP0332956A2 EP 0332956 A2 EP0332956 A2 EP 0332956A2 EP 19890103822 EP19890103822 EP 19890103822 EP 89103822 A EP89103822 A EP 89103822A EP 0332956 A2 EP0332956 A2 EP 0332956A2
Authority
EP
European Patent Office
Prior art keywords
paint
cold gas
polishing
polished
ambient temperature
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
EP19890103822
Other languages
German (de)
English (en)
Other versions
EP0332956A3 (en
EP0332956B1 (fr
Inventor
Alfred Dipl.-Kfm. Hurnaus
Hans Tristl
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.)
Bayerische Motoren Werke AG
Linde GmbH
Original Assignee
Bayerische Motoren Werke AG
Linde 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 Bayerische Motoren Werke AG, Linde GmbH filed Critical Bayerische Motoren Werke AG
Publication of EP0332956A2 publication Critical patent/EP0332956A2/fr
Publication of EP0332956A3 publication Critical patent/EP0332956A3/de
Application granted granted Critical
Publication of EP0332956B1 publication Critical patent/EP0332956B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0426—Cooling with air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application

Definitions

  • the invention relates to a method and a device for grinding and / or polishing a coating at temperatures below the ambient temperature.
  • the invention is therefore based on the object of specifying a method for grinding and / or polishing, in particular defects in a coating at temperatures below the ambient temperature, which largely eliminates the disadvantages of the known procedure.
  • This object is achieved in that the paint is cooled by blowing with cold gas and simultaneously and / or subsequently sanded and / or polished.
  • the cold can be guided exactly to the place where it is needed and transferred efficiently.
  • a vaporized cryogenic medium is used as the cold gas, which brings the necessary cold from the start and which can be set to different temperatures.
  • Liquid nitrogen and argon are particularly suitable due to their safe handling, their inert gas character and their particularly low temperatures. But other cryogenic media can also be used.
  • the area of the coating to be sanded and / or polished is against the Shielded the environment and the cold gas introduced into the shield and evenly distributed within the shield. This ensures uniform and efficient cooling of the desired painting area and only uses as much cold gas as is absolutely necessary. Because the elasticity of a coating decreases as the temperature drops, the area to be treated is advantageously cooled to temperatures of -30 to -50 ° C.
  • a device for carrying out the method according to the invention is characterized by an attachment, after being placed on the area to be processed, which forms a cavity and has outlet openings for used cold gas, which is connected to a cold gas source. It is particularly advantageous if the edge of the attachment seated on the paint is provided with notches forming outlet openings. Such an attachment creates a suitable shielding of the area to be polished with an efficient cold transfer. Through the notches forming the outlet openings on the seated edge of the attachment, the surroundings of the area directly exposed to the cold gas are brought into contact with cold gas and cooled. This avoids excessive temperature differences and thus stresses in the paint on the area to be polished and its surroundings.
  • the figure shows an attachment 1 which is connected to a cold gas source 2.
  • the attachment 1 consists essentially of a hollow cylindrical base body which is coupled to a supply line 4 with a connecting element 3.
  • notches 6 are provided on the edge on which the attachment can be placed on a surface 5, which allow the cold gas introduced into the attached attachment 1 to flow out, the outflowing cold gas being distributed over the painting areas surrounding the attachment .
  • a paint defect for example a dust particle
  • the method according to the invention can be used. First the grain of dust is removed.
  • the attachment 1 is placed on the visible defect that arises and introduced into this cold nitrogen at a temperature of -50 to -196 ° C., preferably -70 to -150 ° C., for a time of 3 to 10 seconds.
  • the paint surface below the attachment, which is exposed to cold gas, is thus cooled to a temperature of approximately -30 to -50 ° C. At this temperature, the paint has only a low elasticity and it is possible to polish the surface that has cooled down in this way and thus to eliminate the defect.
  • the defect can also be cooled in the manner just described and then sanded down. Blowing with cold gas is also advantageous when sanding itself, in order to dissipate the frictional heat generated and to maintain the sandability of the paint. With a lacquer defect that has been sanded off in this way, the component can then easily be subjected to a further lacquer, even several times.
  • the method according to the invention thus provides a quick, easy to carry out and also economical possibility of making certain types of lacquer capable of being sanded and polished.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP89103822A 1988-03-15 1989-03-04 Procédé et dispositif pour poncer et/ou polir une laque à des températures inférieures à la température ambiante Expired - Lifetime EP0332956B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808650 1988-03-15
DE3808650 1988-03-15

Publications (3)

Publication Number Publication Date
EP0332956A2 true EP0332956A2 (fr) 1989-09-20
EP0332956A3 EP0332956A3 (en) 1990-11-28
EP0332956B1 EP0332956B1 (fr) 1993-06-16

Family

ID=6349797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103822A Expired - Lifetime EP0332956B1 (fr) 1988-03-15 1989-03-04 Procédé et dispositif pour poncer et/ou polir une laque à des températures inférieures à la température ambiante

Country Status (4)

Country Link
EP (1) EP0332956B1 (fr)
JP (1) JPH01295751A (fr)
DE (1) DE58904676D1 (fr)
ES (1) ES2042829T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994011152A1 (fr) * 1992-11-11 1994-05-26 Linde Aktiengesellschaft Procede permettant de refroidir des parties de surfaces
WO1997024964A1 (fr) * 1996-01-04 1997-07-17 Maison Gerritsen S.A.R.L. Procede de fabrication d'objets en argent pur, en particulier de couverts de table, et couverts ainsi obtenus
WO1998035782A1 (fr) * 1997-02-17 1998-08-20 Ab Volvo Dispositif et procede pour la finition d'une surface reproductible d'essai
US6520846B1 (en) 1993-05-17 2003-02-18 3M Innovative Properties Company Sanding and polishing systems
FR2967369A1 (fr) * 2010-11-15 2012-05-18 Peugeot Citroen Automobiles Sa Dispositif pour refroidir le bloc rotatif de lustrage d'une lustreuse et installation de lustrage de vehicules automobiles equipee d'un tel dispositif
ITUB20156872A1 (it) * 2015-12-09 2017-06-09 Eurosider Sas Di Milli Ottavio & C Dispositivo e metodo per la verniciatura di manufatti verniciati.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733562A (en) * 1956-02-07 Wheel spindle for grinding machines
US1862135A (en) * 1928-02-24 1932-06-07 Edmond H Bucy Means for rubbing coated surfaces
BE439364A (fr) * 1938-12-16
DE3804588A1 (de) * 1988-02-13 1989-05-11 Bayer Ag Verfahren zum polieren von lackoberflaechen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994011152A1 (fr) * 1992-11-11 1994-05-26 Linde Aktiengesellschaft Procede permettant de refroidir des parties de surfaces
US6520846B1 (en) 1993-05-17 2003-02-18 3M Innovative Properties Company Sanding and polishing systems
WO1997024964A1 (fr) * 1996-01-04 1997-07-17 Maison Gerritsen S.A.R.L. Procede de fabrication d'objets en argent pur, en particulier de couverts de table, et couverts ainsi obtenus
WO1998035782A1 (fr) * 1997-02-17 1998-08-20 Ab Volvo Dispositif et procede pour la finition d'une surface reproductible d'essai
DE19882111B4 (de) * 1997-02-17 2007-01-18 Volvo Car Corp. Verwendung einer Vorrichtung zur Herstellung eines reproduzierbaren Oberflächenfinish einer Testoberfläche
FR2967369A1 (fr) * 2010-11-15 2012-05-18 Peugeot Citroen Automobiles Sa Dispositif pour refroidir le bloc rotatif de lustrage d'une lustreuse et installation de lustrage de vehicules automobiles equipee d'un tel dispositif
ITUB20156872A1 (it) * 2015-12-09 2017-06-09 Eurosider Sas Di Milli Ottavio & C Dispositivo e metodo per la verniciatura di manufatti verniciati.
WO2017098535A1 (fr) * 2015-12-09 2017-06-15 Eurosider S.A.S. Di Milli Ottavio & C. Dispositif et procédé pour le polissage ou l'abrasion de produits

Also Published As

Publication number Publication date
ES2042829T3 (es) 1993-12-16
JPH01295751A (ja) 1989-11-29
EP0332956A3 (en) 1990-11-28
DE58904676D1 (de) 1993-07-22
EP0332956B1 (fr) 1993-06-16

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