EP0978572A1 - Alliage d'or pour la bijouterie - Google Patents

Alliage d'or pour la bijouterie Download PDF

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Publication number
EP0978572A1
EP0978572A1 EP99109579A EP99109579A EP0978572A1 EP 0978572 A1 EP0978572 A1 EP 0978572A1 EP 99109579 A EP99109579 A EP 99109579A EP 99109579 A EP99109579 A EP 99109579A EP 0978572 A1 EP0978572 A1 EP 0978572A1
Authority
EP
European Patent Office
Prior art keywords
gold
alloy
alloys
jewelry
jewellery
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.)
Withdrawn
Application number
EP99109579A
Other languages
German (de)
English (en)
Inventor
Helmut Dr. Knosp
Klaus Wiesner
Arnold Bergbohm
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.)
C Hafner GmbH and Co KG
Original Assignee
C Hafner GmbH and Co KG
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 C Hafner GmbH and Co KG filed Critical C Hafner GmbH and Co KG
Publication of EP0978572A1 publication Critical patent/EP0978572A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/02—Alloys based on gold

Definitions

  • the invention relates to a gold alloy according to the preamble of claim 1. which contains 70 to 80% gold and 15 to 25% copper.
  • Gold alloys for jewelry mainly copper, silver and zinc included have been known for a long time.
  • Such gold alloys of a certain composition are characterized by the fact that they are curable. These alloys can be cured again after soldering, for example. During the Soldering at a temperature of around 800 degrees Celsius will soften the alloy. To give her the strength necessary for the stress during wearing give, must be cured at a temperature of about 400 degrees Celsius become.
  • the alloy For jewelry or medals made by stamping or embossing the alloy should be easily deformable and therefore soft. The later necessary curing will also have an effect here due to the oxide layers that form disadvantageous.
  • alloys that after the Soft annealing at high temperature with time even at normal room temperature an increase in their hardness or strength can be seen.
  • Alloys contain 70 to 80% gold, 15 to 25% copper, 0 to 15% silver and 0.1 to 5% gallium.
  • base metals which consist of aluminum, iron, gallium, indium, silicon, tin and / or zinc additional benefits are achieved.
  • the alloys according to the invention are characterized in that they are suitable for Jewelry alloys important properties of workability, e.g. To water, Rolling, drawing, machining and polishing are excellent.
  • the reddish-yellow color also fulfills the demands made of jewelry alloys be put.
  • Jewelery made from these alloys can therefore be made from soft-annealed primary material Manufactured under easier manufacturing conditions and with the final finish be provided.
  • the piece of jewelry achieves its necessary hardness and strength in a period of a few hours or days at room temperature.
  • Another advantageous alloy has 70 to 80% gold, 15 to 25% copper, 0.1 up to 5% silver, 0.1 to 3% gallium and / or 0.1 to 3% zinc.
  • an alloy has been found to be advantageous which is 70 to 80% gold, 15 to 25% copper, 0.5% silver, 0.1 to 1% gallium and / or 0.1 to 2% Contains zinc.
  • Table 1 shows further exemplary compositions of some alloys according to the invention and their increase in hardness after aging at room temperature.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)
EP99109579A 1998-08-01 1999-05-14 Alliage d'or pour la bijouterie Withdrawn EP0978572A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19834858 1998-08-01
DE19834858A DE19834858C2 (de) 1998-08-01 1998-08-01 Goldlegierung für Schmuckzwecke

Publications (1)

Publication Number Publication Date
EP0978572A1 true EP0978572A1 (fr) 2000-02-09

Family

ID=7876198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109579A Withdrawn EP0978572A1 (fr) 1998-08-01 1999-05-14 Alliage d'or pour la bijouterie

Country Status (2)

Country Link
EP (1) EP0978572A1 (fr)
DE (1) DE19834858C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2402467A1 (fr) 2010-06-30 2012-01-04 The Swatch Group Research and Development Ltd. Alliage d'or à dureté améliorée
CN105087997A (zh) * 2015-08-07 2015-11-25 广州番禺职业技术学院 一种用于烧制高温透明珐琅的红色金合金及其制备方法
EP3144401A1 (fr) * 2015-09-16 2017-03-22 C. Hafner GmbH + Co. KG Alliage d'or blanc pour bijoux

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861455A (en) * 1972-01-27 1975-01-21 Williams Gold Refining Co Method of investment casting a bright gold alloy
JPS6462296A (en) * 1987-08-29 1989-03-08 Tokuriki Honten Kk Gold brazing alloy
US5338378A (en) * 1992-09-29 1994-08-16 Kyushu University Dental gold alloy with age-hardenability at intraoral temperature

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1444350A (en) * 1972-10-03 1976-07-28 Johnson Matthey Co Ltd Dental alloys
GB9314292D0 (en) * 1993-07-10 1993-08-25 Johnson Matthey Plc Gold alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861455A (en) * 1972-01-27 1975-01-21 Williams Gold Refining Co Method of investment casting a bright gold alloy
JPS6462296A (en) * 1987-08-29 1989-03-08 Tokuriki Honten Kk Gold brazing alloy
US5338378A (en) * 1992-09-29 1994-08-16 Kyushu University Dental gold alloy with age-hardenability at intraoral temperature

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 123, no. 12, 18 September 1995, Columbus, Ohio, US; abstract no. 150335, OUCHIDA, R. ET AL: "Effects of Au/Cu ratio and gallium content on the low-temperature age-hardening in Au-Cu-Ga alloys" XP002121973 *
CHEMICAL ABSTRACTS, vol. 123, no. 12, 18 September 1995, Columbus, Ohio, US; abstract no. 152835, WATANABE, IKUYA ET AL: "Dimensional changes related to ordering in an gold-copper-3% gallium allo at intraoral temperature" XP002121974 *
DENT. MATER. (1994), 10(6), 369-74, XP002123011 *
J. MATER. SCI. (1995), 30(15), 3863-6, XP002123010 *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 258 (M - 838) 15 June 1989 (1989-06-15) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2402467A1 (fr) 2010-06-30 2012-01-04 The Swatch Group Research and Development Ltd. Alliage d'or à dureté améliorée
WO2012000803A2 (fr) 2010-06-30 2012-01-05 The Swatch Group Research And Development Ltd Alliage d'or à dureté améliorée
CN103038377A (zh) * 2010-06-30 2013-04-10 斯沃奇集团研究和开发有限公司 具有提高的硬度的金合金
CN103038377B (zh) * 2010-06-30 2016-04-27 斯沃奇集团研究和开发有限公司 具有提高的硬度的金合金
CN105087997A (zh) * 2015-08-07 2015-11-25 广州番禺职业技术学院 一种用于烧制高温透明珐琅的红色金合金及其制备方法
EP3144401A1 (fr) * 2015-09-16 2017-03-22 C. Hafner GmbH + Co. KG Alliage d'or blanc pour bijoux

Also Published As

Publication number Publication date
DE19834858C2 (de) 2003-01-02
DE19834858A1 (de) 2000-02-10

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