EP0818274B1 - Oberflächenbehandlung von Aluminiumlegierungen mittels Strahlen mit Schleifpulver - Google Patents

Oberflächenbehandlung von Aluminiumlegierungen mittels Strahlen mit Schleifpulver Download PDF

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Publication number
EP0818274B1
EP0818274B1 EP97420112A EP97420112A EP0818274B1 EP 0818274 B1 EP0818274 B1 EP 0818274B1 EP 97420112 A EP97420112 A EP 97420112A EP 97420112 A EP97420112 A EP 97420112A EP 0818274 B1 EP0818274 B1 EP 0818274B1
Authority
EP
European Patent Office
Prior art keywords
abrasive powder
abrasive
under pressure
grains
projection
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
EP97420112A
Other languages
English (en)
French (fr)
Other versions
EP0818274A1 (de
Inventor
Jean-André Alary
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.)
PEM ABRASIFS-REFRACTAIRES
Original Assignee
PEM ABRASIFS-REFRACTAIRES
PEM Abrasifs Refractaires
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 PEM ABRASIFS-REFRACTAIRES, PEM Abrasifs Refractaires filed Critical PEM ABRASIFS-REFRACTAIRES
Publication of EP0818274A1 publication Critical patent/EP0818274A1/de
Application granted granted Critical
Publication of EP0818274B1 publication Critical patent/EP0818274B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts

Definitions

  • the invention relates to a method for treating aluminum alloy surfaces, such as sheets, bars, tubes, profiles or molded parts or machined, by pressure spraying of an abrasive powder, designated operation usually under the name of sandblasting.
  • the abrasive grains must both be tough enough not to not quickly break into finer particles, and yet exhibit a fragile fracture phenomenon to form new sharp and cutting edges.
  • the material chosen must therefore have mechanical characteristics which are a compromise between hardness and tenacity, which are in general contradictory. The material usually used is crushed and sifted electroconduced white corundum.
  • the subject of the invention is a method for treating aluminum or alloy surfaces aluminum by spraying an abrasive powder under pressure, in which uses an fused corundum-zirconia powder as an abrasive powder containing from 20% to 45% by weight of zirconia.
  • the invention is based on the finding made by the applicant of an improvement spectacular results obtained when sanding aluminum alloy surfaces by replacing the white corundum with corundum-zirconia, in particular as regards the polishing time and the duration of use of the abrasive powder.
  • Corundum-zirconia alloys are obtained by melting a mixture of alumina and zirconia and are known as abrasives, but their use as a material for sandblasting has never been considered.
  • the sandblasting operation is carried out under the same conditions as with the use of a corundum powder, i.e. using compressed air at a pressure between 0.05 and 0.2 MPa for alloys wrought in low or medium thickness and from 0.15 to 0.3 MPa for solid parts, such as foundry parts.
  • the nozzle of projection is located between 10 and 50 cm from the surface to be treated and is directed approximately perpendicular to this surface.
  • the size of the abrasive powder depends on the condition surface area sought. It can range from 20 to 60 (depending on the FEPA designation) for a coarse polishing, from 40 to 80 for a medium grain, from 100 to 200 for a fine grain and beyond 200 for a very fine grain. It is possible, especially for fine grains where the operation gives off a lot of dust, to make a wet sandblasting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Powder Metallurgy (AREA)

Claims (1)

  1. Verfahren zur Behandlung von Oberflächen aus Aluminiumlegierung durch Strahlen unter Druck mit einem Zirkonerde und Tonerde enthaltenden Schleifpulver, dadurch gekennzeichnet, dass das Schleifpulver aus einem elektrisch geschmolzenen Korund-Zirkonerde-Gemisch besteht, das in Masse 20 bis 45 % Zirkonerde enthält.
EP97420112A 1996-07-11 1997-07-09 Oberflächenbehandlung von Aluminiumlegierungen mittels Strahlen mit Schleifpulver Expired - Lifetime EP0818274B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9608901 1996-07-11
FR9608901A FR2750909B1 (fr) 1996-07-11 1996-07-11 Traitement de surfaces en alliage d'aluminium par projection d'une poudre abrasive sous pression

Publications (2)

Publication Number Publication Date
EP0818274A1 EP0818274A1 (de) 1998-01-14
EP0818274B1 true EP0818274B1 (de) 2001-10-24

Family

ID=9494115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97420112A Expired - Lifetime EP0818274B1 (de) 1996-07-11 1997-07-09 Oberflächenbehandlung von Aluminiumlegierungen mittels Strahlen mit Schleifpulver

Country Status (7)

Country Link
EP (1) EP0818274B1 (de)
AT (1) ATE207399T1 (de)
DE (1) DE69707573T2 (de)
DK (1) DK0818274T3 (de)
ES (1) ES2166058T3 (de)
FR (1) FR2750909B1 (de)
PT (1) PT818274E (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007361B4 (de) * 2003-02-24 2005-10-06 Innovent E.V. Verfahren zur Modifizierung von verzinkten Stahloberflächen und Schwarzstahloberflächen
CN106808372B (zh) * 2016-12-26 2019-04-12 广州市亿众金属制品有限公司 一种铝合金表面机械处理方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086972A5 (en) * 1970-04-15 1971-12-31 Pechiney Abrasive grains by alpha alumina-in alumina zirconia eutectic - matrix
US4035162A (en) * 1973-11-09 1977-07-12 Corning Glass Works Fused abrasive grains consisting essentially of corundum, zirconia and R2 O3
DE2560066B1 (de) * 1974-05-29 1979-12-13 Treibacher Chemische Werke Ag Verfahren zur Herstellung von Schleifmaterialien auf der Basis von Aluminiumoxid,gegebenenfalls zusammen mit anderen Oxiden
FR2499061A1 (fr) * 1981-01-30 1982-08-06 Sofrem Procede et appareillage de solidification et de refroidissement rapides par coulee continue de produits fondus a base d'oxydes metalliques
GB2137651A (en) * 1983-04-05 1984-10-10 Unicorn Ind Plc Coated abrasives
DE3609408A1 (de) * 1986-03-20 1987-09-24 Georg Norbert Fassel Verfahren zur regenerierung von kraftfahrzeugfelgen
US5409415A (en) * 1992-07-02 1995-04-25 Nikkato Corp. Shot method
DE4306966C1 (de) * 1992-10-19 1994-01-20 Starck H C Gmbh Co Kg Schleifkorn auf der Basis von Zirkonkorund, Verfahren zu seiner Herstellung und dessen Verwendung
DE4303339C2 (de) * 1993-02-05 1995-03-30 Ritter Aluminium Giesserei Gmb Verfahren zur Behandlung von Aluminiumdruckgußteilen

Also Published As

Publication number Publication date
DE69707573D1 (de) 2001-11-29
FR2750909A1 (fr) 1998-01-16
PT818274E (pt) 2002-04-29
DE69707573T2 (de) 2002-07-11
FR2750909B1 (fr) 1998-10-16
EP0818274A1 (de) 1998-01-14
DK0818274T3 (da) 2002-02-18
ES2166058T3 (es) 2002-04-01
ATE207399T1 (de) 2001-11-15

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