Global Patent Index - EP 3165621 A1

EP 3165621 A1 20170510 - METHOD FOR MANUFACTURING A GOLD ALLOY WIRE

Title (en)

METHOD FOR MANUFACTURING A GOLD ALLOY WIRE

Title (de)

HERSTELLUNGSVERFAHREN EINES DRAHTS AUS GOLDLEGIERUNG

Title (fr)

PROCÉDÉ DE FABRICATION D'UN FIL EN ALLIAGE D'OR

Publication

EP 3165621 A1 20170510 (FR)

Application

EP 15193182 A 20151105

Priority

EP 15193182 A 20151105

Abstract (en)

[origin: CN106676368A] A method for manufacturing a gold alloy wire is provided. The method includes preparing an alloy comprising 33.33-45.83% of Au, 3.64-12.44% of Zn, 18.46-45.02% of Cu, 9.88-33.78% of Ni, and 0.0-5.0% of an element selected from Ir, In, Ti, Si, Ga and Re; manufacturing a continuous casting rod the diameter of which is 8.0-20.0 mm; subjecting the rod to wire rod rolling by limiting the deformation of the section to less than 20% per pass, preferably 13%; measuring the cumulative deformation with respect to the initial section; stopping the wire rod rolling when the cumulative deformation reaches 60% to 75%; annealing; performing wire rod rolling again and repeating wire rod rolling, measurement and annealing until the cross section reaches a required cross section; and drawing an intermediate product to obtain a fracture-surface wire having a round cross section.

Abstract (fr)

Procédé de fabrication d'un fil en alliage d'or: - on compose un alliage comportant de 33,33% à 45,83% d'Au, de 3,64% à 12,44% de Zn, de 18,46% à 45,02% de Cu, de 9,88% et 33,78 % de Ni, et de 0,0 à 5,0% d'éléments parmi Ir, In, Ti, Si, Ga, Re, - on coule en continu une barre, de diamètre de 8,0 à 20,0 mm, - on lamine ladite barre en limitant la déformation de la section à moins de 20% par passe, préférentiellement 13%, - on mesure la déformation cumulée par rapport à la section initiale, - on cesse le laminage quand la déformation cumulée atteint 60% à 75%, on effectue un recuit, - on reprend le laminage et on réitère le processus de laminage, de mesure, et de recuit jusqu'à l'atteinte de la section souhaitée, - on étire le laminé pour obtenir un fil profilé de section circulaire.

IPC 8 full level

C22C 30/02 (2006.01); C22C 5/02 (2006.01); C22C 9/00 (2006.01); C22F 1/14 (2006.01)

CPC (source: CN EP RU US)

B21B 1/16 (2013.01 - US); B21B 3/00 (2013.01 - US); C22C 5/02 (2013.01 - CN EP US); C22C 5/04 (2013.01 - RU); C22C 9/00 (2013.01 - CN); C22C 30/02 (2013.01 - CN EP US); C22C 30/06 (2013.01 - CN); C22F 1/08 (2013.01 - CN); C22F 1/14 (2013.01 - CN EP RU US); C22F 1/16 (2013.01 - CN); G04B 19/042 (2013.01 - EP); G04B 19/12 (2013.01 - EP); C22C 9/00 (2013.01 - EP US)

Citation (applicant)

"A facile chemical screening method for the détection of stress corrosion cracking in 9 carat gold alloys", GOLD BULLETIN, vol. 42, no. 3, 2009

Citation (search report)

  • [A] GB 1228716 A 19710415
  • [A] EP 2045343 A1 20090408 - LEGOR GROUP S R L [IT]
  • [A] US 1577995 A 19260323 - MERRIMAN WISE EDMUND
  • [A] AT 214156 B 19610327 - BRELLIER EDMOND, et al
  • [A] GREG NORMANDEAU ET AL: "White golds: A question of compromises", GOLD BULLETIN, vol. 27, no. 3, 1 September 1994 (1994-09-01), London, UK, pages 70 - 86, XP055270088, ISSN: 0017-1557, DOI: 10.1007/BF03214730
  • [A] NIELSEN JOHN P ET AL: "Castability characterization of gold jewelry alloys", PRECIOUS MET. / PRECIOUS MET., PROC. INT. PRECIOUS MET. INST. CONF., 8TH, 1985 ), MEETING DATE 1984, 117-29. EDITOR(S): MOHIDE, THOMAS PATRIC. PUBLISHER: INT. PRECIOUS MET. INST., ALLENTOWN, PA. CODEN: 55CIAW, 1 January 1984 (1984-01-01), pages 117 - 129, XP009189895
  • [AD] B. NEUMEYER ET AL: "A facile chemical screening method for the detection of stress corrosion cracking in 9 carat gold alloys", GOLD BULLETIN, vol. 42, no. 3, 1 September 2009 (2009-09-01), London, UK, pages 209 - 214, XP055270079, ISSN: 0017-1557, DOI: 10.1007/BF03214936
  • [A] OLGA V. SHULGA ET AL: "Preparation and Characterization of Porous Gold and Its Application as a Platform for Immobilization of Acetylcholine Esterase", CHEMISTRY OF MATERIALS, vol. 19, no. 16, 17 July 2007 (2007-07-17), US, pages 3902 - 3911, XP055270086, ISSN: 0897-4756, DOI: 10.1021/cm070238n

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3165621 A1 20170510; CN 106676368 A 20170517; CN 106676368 B 20180918; EP 3165622 A1 20170510; EP 3165622 B1 20190313; JP 2017089002 A 20170525; JP 6263245 B2 20180117; RU 2016143464 A 20180504; RU 2016143464 A3 20200228; RU 2720374 C2 20200429; US 10471486 B2 20191112; US 2017128992 A1 20170511

DOCDB simple family (application)

EP 15193182 A 20151105; CN 201610962907 A 20161104; EP 16189866 A 20160921; JP 2016207636 A 20161024; RU 2016143464 A 20161103; US 201615342270 A 20161103