Method for recovery of high grade gold alloy from karat gold-clad base
metal substrates
    1.
    发明授权
    Method for recovery of high grade gold alloy from karat gold-clad base metal substrates 失效
    从金刚玉基底金属基底回收高品位金合金的方法

    公开(公告)号:US4606797A

    公开(公告)日:1986-08-19

    申请号:US775070

    申请日:1985-09-12

    IPC分类号: C25F5/00

    CPC分类号: C25F5/00 C25C1/20 C25C5/02

    摘要: A method for recovering high grade gold alloy in an unoxidized condition from karat gold clad to a base metal substrate without significant oxidation of the substrate, wherein the substrate is employed as an anode in an aqueous solution of from about 0.02 to about 2% by weight nitric acid and is subjected to electrolysis at a temperature of from about 48.degree. C. to about 94.degree. C. for sufficient time to delaminate karat gold from the substrate in particulate form and deposit same in the solution, from which the delaminated karat gold may be separated. Also disclosed is an apparatus suitable for carrying out such process, comprising an electrolysis tank wherein the karat gold-clad base metal substrate is mounted in spaced relationship to a cathode, with filtration means disposed in the tank for collection of delaminated karat gold formed during the electrolysis, and means for draining or otherwise withdrawing electrolyte solution from the tank after termination of the electrolysis conditions, whereby the delaminated karat gold may be recovered from the electrolyte solution.

    摘要翻译: 一种在未氧化条件下从无金属包覆到基底金属基底的高品位金合金的回收方法,而不会明显地氧化基底,其中将基底用作约0.02至约2%(重量)的水溶液中的阳极 硝酸,并在约48℃至约94℃的温度下进行电解足够的时间以从颗粒形式的基质中分层岩溶金,并将其沉积在溶液中,其中分层的卡拉金可以从其中 被分开 还公开了一种适用于进行这种处理的装置,其中包括一个电解槽,其中该金刚石覆盖的基底金属基底与阴极间隔开地安装,其中设置在该储罐中的过滤装置用于收集在该过程中形成的分层的卡拉金 电解,以及在电解条件终止之后排出或以其他方式从电解槽中取出电解质溶液的装置,从而可以从电解液中回收分层的卡拉金。

    Alloy compositions
    2.
    发明授权
    Alloy compositions 失效
    合金组成

    公开(公告)号:US5045411A

    公开(公告)日:1991-09-03

    申请号:US463153

    申请日:1990-01-10

    IPC分类号: C22C5/02 C22C5/08 C22C9/00

    摘要: A gold based alloy containing gold, silver, copper, zinc, silicon, iron, boron, nickel and indium for the manufacture of gold articles is described which has a lower melting point, extended remelting capabilities, high resistance to cracking, improved color consistency and increased ductility.

    摘要翻译: 描述了一种用于制造金制品的含金,银,铜,锌,硅,铁,硼,镍和铟的金基合金,其具有较低的熔点,延长的再熔化能力,高耐开裂性,改善的颜色一致性和 增加延展性。

    Tarnish resistant gold colored alloy
    3.
    发明授权
    Tarnish resistant gold colored alloy 失效
    耐褪色金色合金

    公开(公告)号:US5409663A

    公开(公告)日:1995-04-25

    申请号:US237314

    申请日:1994-05-03

    IPC分类号: C22C30/06 C22C30/02

    CPC分类号: C22C30/06

    摘要: An indium-free, gold-colored, tarnish and corrosion-resistant alloy having no greater than 10% by weight gold and a color value, as measured according to the Cielab Color Measurement System, of approximately L=87.4, a=1.1, b=15.3. The alloy comprises 28-35% copper, 19.5-22.5% silver, 6-11% palladium, 22-32% zinc, 0.1-1% aluminum, and 0.5-3% platinum.

    摘要翻译: 根据Cielab色彩测量系统测量的不含金属重量的不超过10%的无铟,金色,晦暗和耐腐蚀的合金,颜色值约为L = 87.4,a = 1.1,b = 15.3。 该合金包括28-35%的铜,19.5-22.5%的银,6-11%的钯,22-32%的锌,0.1-1%的铝和0.5-3%的铂。

    Method for producing silver colored brazing alloy
    4.
    发明授权
    Method for producing silver colored brazing alloy 失效
    银色钎焊合金的制造方法

    公开(公告)号:US4640752A

    公开(公告)日:1987-02-03

    申请号:US791980

    申请日:1985-10-28

    IPC分类号: C25F1/04 C25F1/00

    CPC分类号: C25F1/04

    摘要: A strip of silver-copper brazing alloy, connected to the positive terminal of a rectifier, is passed through an acid treatment bath containing a cathode adjacent each face of the strip. The strip is resistively heated to a temperature of at least 350.degree. C. prior to its entry into the treatment bath by passing an electric current through the strip and the treatment bath to the cathodes. Copper oxide is electrolytically dissolved from the surface of the strip in the treatment bath.

    摘要翻译: 连接到整流器的正极的银 - 铜钎焊合金条穿过与条的每个面相邻的含有阴极的酸处理槽。 在通过使电流通过条带和处理槽进入阴极之前,将带材电阻加热至至少350℃的温度,然后进入处理槽。 氧化铜在处理槽中从带的表面电解溶解。