EP0255501B1 - Metallprodukt mit verbessertem Glanz nach der Lackierung und Verfahren zu dessen Herstellung - Google Patents

Metallprodukt mit verbessertem Glanz nach der Lackierung und Verfahren zu dessen Herstellung Download PDF

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Publication number
EP0255501B1
EP0255501B1 EP87870100A EP87870100A EP0255501B1 EP 0255501 B1 EP0255501 B1 EP 0255501B1 EP 87870100 A EP87870100 A EP 87870100A EP 87870100 A EP87870100 A EP 87870100A EP 0255501 B1 EP0255501 B1 EP 0255501B1
Authority
EP
European Patent Office
Prior art keywords
plane
smooth
metal product
valleys
tool
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.)
Expired - Lifetime
Application number
EP87870100A
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English (en)
French (fr)
Other versions
EP0255501A1 (de
Inventor
Jean Crahay
Adolphe Bragard
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Priority to AT87870100T priority Critical patent/ATE69184T1/de
Publication of EP0255501A1 publication Critical patent/EP0255501A1/de
Application granted granted Critical
Publication of EP0255501B1 publication Critical patent/EP0255501B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/14—Roughness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49986—Subsequent to metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]

Definitions

  • the present invention relates to a metallic product having an improved gloss after painting, as well as to methods for its manufacture. It relates in particular to cold-rolled metal sheets, which will be more specifically referred to in the description which follows, but it can also be applied to other types of metal products intended to be painted.
  • the object of the present invention is to provide a surface morphology of a metal product ensuring that it has an optimum shine after painting while being compatible with the requirements of the other processing operations, in particular by forming.
  • a metal product having an improved gloss after painting, with a surface morphology consisting of alternating peaks and valleys is characterized in that the vertices of a plurality of said peaks are constituted by facets flat and smooth, in that said flat and smooth facets are located in the same plane and in that they represent at least 30% of the total surface of said product.
  • said flat and smooth facets represent at least 50% of the total surface of the metal product.
  • the valleys separating said flat and smooth facets form a network drawing a regular pattern, possibly repetitive, in the surface of said product.
  • each of said facets in any direction in its plane, is advantageously between 50 ⁇ m and 200 ⁇ m.
  • the facets are of the same order of magnitude as the valleys that separate them; they then constitute only an insufficient portion of the surface and do not provide the desired gloss.
  • a dimension greater than 200 ⁇ m is not desirable, in order to avoid the appearance of harmful one-off phenomena, such as micro-seizure during the forming operations.
  • This characteristic can also be expressed by specifying that the pitch of said network is advantageously between 50 ⁇ m and 200 ⁇ m.
  • the present invention also relates to methods for manufacturing a metal product having the above characteristics.
  • the metal product is given a flat and smooth surface by contact with a first tool having a smooth surface, and a network of valleys is printed in said flat and smooth surface by means of a second tool whose surface is provided with an appropriate network of ridges.
  • the flat and smooth surface of the product can be provided, before the last manufacturing step, with a very fine roughness which deviates little from the ideal plane and in any case less than the final roughness corresponding to the above-mentioned network, if necessary to allow the first stages of manufacturing.
  • the final roughness is imparted by a tool, the surface of which is itself provided with a network of ridges intended to imprint the network of aforementioned valleys in the surface of the product.
  • the essentially flat portions of the surface of the tool lying between the ridges do not come into contact with the flat and smooth surface of the product. However, even if such contact did occur, the flat portions of the surface of the tool would not destroy the flatness of the facets of the surface of the product lying between the valleys of the network thus printed.
  • a roughness consisting of alternating peaks and valleys is printed in the surface of the metal product by means of a first tool, the surface of which is provided with an appropriate network of ridges and the vertices of a plurality of said peaks by means of a second substantially smooth tool, so as to form flat and smooth facets separated by said valleys.
  • the first, respectively the second tool, the surface of which is provided with an appropriate crest network is a tool, the surface of which has been treated by means of a laser beam.
  • Fig. 1 shows, in greatly enlarged cross-section, the morphology of the surface of a sheet according to the invention.
  • Fig.2 illustrates the different manufacturing steps leading to such a surface morphology, according to the first embodiment mentioned above.
  • Fig.3 illustrates the successive operations constituting the second embodiment of a surface morphology according to the invention.
  • a fragment of a steel sheet 1 intended to be painted. It may in particular be a sheet metal bodywork.
  • the surface of the sheet should be perfectly flat and smooth as indicated by the trace of the ideal plane 2.
  • the real surface comprises flat and smooth facets 3 forming part of the ideal plane 2, separated by valleys 4 which make it possible to ensure the lubrication of the sheet during the forming operations.
  • the dimension d of the facets is between 50 ⁇ m and 200 ⁇ m.
  • Fig.2 illustrates, in three stages a, b, c, the manufacture of a cold-rolled sheet according to the invention by the first embodiment described above.
  • a sheet 1 flat and smooth, obtained by appropriate prior operations and intended to receive its final morphology.
  • a finishing rolling cylinder 5 for example a work hardening cylinder, is provided with ridges 6 forming on its surface a network (not shown).
  • the cylinder 5 is applied to the sheet 1 and there prints a network of valleys 4, the portions of the flat surface of the sheet included between the valleys may or may not meet the portions of the surface of the cylinder included between the ridges 6.
  • view c shows the sheet 1 provided, on one side in the present example, with flat and smooth facets 3 separated by a network of valleys 4.
  • FIG.3 illustrates in three steps e, f, g, the manufacture of a sheet according to the invention by the second embodiment mentioned above.
  • View e shows in section, a sheet 1 provided with a regular roughness, for example with a tandem rolling mill.
  • This sheet is in view f, crushed on the skin-pass by a cylinder 5, the smooth surface of which smoothes the peaks of the initial roughness.
  • the sheet 1 has each time been shown with a single face treated in accordance with the invention. It goes without saying that this invention also covers cases where all the faces of the product have, over at least part of their extent, the particular morphology which is proposed here.
  • a treatment of the surface of rolling mill rolls by means of an intermittent laser beam makes it possible to create in this surface microcraters serving to imprint in the surface of a sheet the network of valleys leading to the desired morphology.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Powder Metallurgy (AREA)
  • Laser Beam Processing (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (8)

  1. Metallprodukt, das einen verbesserten Glanz nach dem Lackieren aufweist, mit einer Oberflächenmorphologie von sich abwechselnden Erhebungen und Vertiefungen, dadurch gekennzeichnet, daß die Gipfel einer Mehrzahl jener Erhebungen aus ebenen und glatten Flächen (3) bestehen, daß sich jene ebenen und glatten Flächen (3) in derselben Ebene (2) befinden und daß sie mindestens 30% der Gesamtfläche jenes Produkts (1) ausmachen.
  2. Metallprodukt nach Anspruch 1, dadurch gekennzeichnet, daß jene ebenen und glatten Flächen (3) mindestens 50% der Gesamtfläche jenes Produkts (1) ausmachen.
  3. Metallprodukt nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die jene ebenen und glatten Flächen (3) trennenden Vertiefungen (4) ein regelmäßiges Musternetz in der Oberfläche jenes Produkts (1) bilden.
  4. Metallprodukt nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die jene ebenen und glatten Flächen (3) trennenden Vertiefungen (4) ein regelmäßiges und sich wiederholendes Musternetz in der Oberfläche jenes Produkts (1) bilden.
  5. Metallprodukt nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Abmessung jeder jener ebenen und glatten Flächen (3), in irgendeiner Richtung der Metallproduktebene gemessen, zwischen 50 µm und 200 µm beträgt.
  6. Verfahren zur Herstellung eines Metallproduktes nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß jenem Metallprodukt (1) durch den Kontakt mit einem ersten Werkzeug, das eine glatte Oberfläche aufweist, eine ebene und glatte Oberfläche verliehen wird, und daß mittels eines zweiten Werkzeugs (5), dessen Oberfläche mit einem Netz aus entsprechenden Graten (6) versehen ist, ein Netz aus Vertiefungen (4) in jene ebene und glatte Oberfläche eingedrückt wird.
  7. Verfahren zur Herstellung eines Metallproduktes nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß mittels eines ersten Werkzeugs, dessen Oberfläche mit einem Netz aus entsprechenden Graten versehen ist, eine aus abwechselnden Erhebungen und Vertiefungen bestehende Rauhigkeit in die Oberfläche jenes Metallprodukts (1) eingedrückt wird, und daß mittels eines im wesentlichen glatten, zweiten Werkzeugs (5) die Gipfel einer Mehrzahl jener Erhebungen so abgeflacht werden, daß ebene und glatte Flächen (3) entstehen, die durch jene Vertiefungen (4) getrennt werden.
  8. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß es sich bei jenem ersten, beziehungsweise zweiten Werkzeug, dessen Oberfläche mit einem Netz aus entsprechenden Graten versehen ist, um ein Werkzeug handelt, dessen Oberfläche mit einem Laserstrahl behandelt wurde.
EP87870100A 1986-07-28 1987-07-20 Metallprodukt mit verbessertem Glanz nach der Lackierung und Verfahren zu dessen Herstellung Expired - Lifetime EP0255501B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87870100T ATE69184T1 (de) 1986-07-28 1987-07-20 Metallprodukt mit verbessertem glanz nach der lackierung und verfahren zu dessen herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU86531 1986-07-28
LU86531A LU86531A1 (fr) 1986-07-28 1986-07-28 Produit metallique presentant une brillance apres peinture amelioree et procedes pour sa fabrication

Publications (2)

Publication Number Publication Date
EP0255501A1 EP0255501A1 (de) 1988-02-03
EP0255501B1 true EP0255501B1 (de) 1991-11-06

Family

ID=19730747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87870100A Expired - Lifetime EP0255501B1 (de) 1986-07-28 1987-07-20 Metallprodukt mit verbessertem Glanz nach der Lackierung und Verfahren zu dessen Herstellung

Country Status (6)

Country Link
US (2) US4917962A (de)
EP (1) EP0255501B1 (de)
AT (1) ATE69184T1 (de)
BE (1) BE905967A (de)
DE (1) DE3774354D1 (de)
LU (1) LU86531A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978583A (en) * 1986-12-25 1990-12-18 Kawasaki Steel Corporation Patterned metal plate and production thereof
US4996113A (en) * 1989-04-24 1991-02-26 Aluminum Company Of America Brightness enhancement with textured roll
US5025547A (en) * 1990-05-07 1991-06-25 Aluminum Company Of America Method of providing textures on material by rolling
CA2095228C (en) * 1991-09-03 1997-01-14 Takaharu Kawamoto Steel strip having excellent painting sharpness and press moldability and method for producing rolling dull roll
US5250364A (en) * 1992-02-03 1993-10-05 Aluminum Company Of America Rolled product with textured surface for improved lubrication, formability and brightness
CN1230272C (zh) * 2003-07-29 2005-12-07 吉林大学 一种提高机械部件耐磨性能的方法
KR101262264B1 (ko) * 2011-05-26 2013-05-08 현대자동차주식회사 차량용 패널의 제조방법 및 장치
KR20170018342A (ko) * 2014-06-06 2017-02-17 가부시키가이샤 유에이씨제이 집전체용 금속박, 집전체 및 집전체용 금속박의 제조 방법
TWI632726B (zh) * 2014-10-21 2018-08-11 加川清二 微多孔金屬箔的製造方法及裝置

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DE264430C (de) *
US2991544A (en) * 1957-05-07 1961-07-11 American Can Co Bright surfaced metal sheets and method of producing same
DE1247251B (de) * 1964-04-25 1967-08-17 Opel Adam Ag Ziehblech fuer Ziehteile
US3619881A (en) * 1969-01-17 1971-11-16 United States Steel Corp Cold rolling work roll
US4111032A (en) * 1974-11-06 1978-09-05 Societe Lorraine De Laminage Continu Process for producing a metal sheet to be deep drawn or extra-deep drawn for the fabrication of shaped metal parts
FR2290623A1 (fr) * 1974-11-06 1976-06-04 Lorraine Laminage Tole pour emboutissage profond ou extraprofond et procede d'obtention d'une telle tole
US3956915A (en) * 1975-03-25 1976-05-18 National Steel Corporation Drawing and ironing container stock and manufacturing methods
JPS548330A (en) * 1977-06-21 1979-01-22 Nihon Plast Co Ltd Preparation of wooden handle
JPS5813913B2 (ja) * 1977-09-22 1983-03-16 富士通株式会社 仮想画面サ−ビスをもつディスプレイ制御システム
JPS5497527A (en) * 1978-01-20 1979-08-01 Nippon Steel Corp Production of cold rolled steel plate having excellent phosphate treatment adaptability
FR2438507A1 (fr) * 1978-10-13 1980-05-09 Safian Matvei Procede de fabrication de lamines plats
LU80792A1 (fr) * 1979-01-15 1980-08-08 Ntre De Rech Metallurg Ct Voor Dispsitif et procede pour effectuer des perforations a la surface des cylindres de laminoirs
FR2476524A1 (fr) * 1980-02-27 1981-08-28 Sumitomo Metal Ind Procede pour travailler la surface d'un cylindre de laminage a froid
JPS5934441A (ja) * 1982-08-19 1984-02-24 Honda Motor Co Ltd 内燃エンジンの空燃比制御方法
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US4735883A (en) * 1985-04-06 1988-04-05 Canon Kabushiki Kaisha Surface treated metal member, preparation method thereof and photoconductive member by use thereof
JPS6216802A (ja) * 1985-07-16 1987-01-26 Sumitomo Metal Ind Ltd 鋼片の表面割れを防止した熱間圧延法
US4775599A (en) * 1985-12-24 1988-10-04 Kawasaki Steel Corporation Cold rolled steel sheets having an improved press formability
US4798772A (en) * 1986-01-17 1989-01-17 Kawasaki Steel Corporation Steel sheets for painting and a method of producing the same
JPS62168602A (ja) * 1986-01-17 1987-07-24 Kawasaki Steel Corp 塗装用鋼板およびその製造方法
JPS62230402A (ja) * 1986-03-31 1987-10-09 Kawasaki Steel Corp 塗装用鋼板及びその製造方法
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Also Published As

Publication number Publication date
EP0255501A1 (de) 1988-02-03
BE905967A (fr) 1987-06-17
US5044076A (en) 1991-09-03
DE3774354D1 (de) 1991-12-12
ATE69184T1 (de) 1991-11-15
LU86531A1 (fr) 1988-02-02
US4917962A (en) 1990-04-17

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