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There are three basic techniques that may be used to attach granules to a metal surface: hard soldering, fusing and colloidal soldering. The metals used in granulation are usually gold and/or silver alloys of high purity – alloys below 18 kt. gold and sterling silver being unsuitable. With each technique, the process begins with the making of ...
Soldering (US: / ˈ s ɒ d ər ɪ ŋ /; UK: / ˈ s oʊ l d ər ɪ ŋ /) is a process of joining two metal surfaces together using a filler metal called solder. The soldering process involves heating the surfaces to be joined and melting the solder, which is then allowed to cool and solidify, creating a strong and durable joint.
In contrast to using traditional bars or coiled wires of all-metal solder and manually applying flux to the parts being joined, much hand soldering since the mid-20th century has used flux-core solder. This is manufactured as a coiled wire of solder, with one or more continuous bodies of inorganic acid or rosin flux embedded lengthwise inside it.
Although the method used is called soldering, it is actually a form of brazing, using "solders" of the metal being worked, i.e. gold solders for gold pieces, silver solder for silver pieces, etc. All of this is the work of bench jewelers, who at this level are sometimes known as production workers in some arenas.
Later, as the technique for soldering developed, the wire wrapping approach continued because it was an economical and quick way to make jewelry components out of wire. Wire wrapping techniques are not frequently used for mass-produced jewelry because machines can cast (mold) jewelry components faster, more cheaply, and more precisely.
The soldering of gold. [3] The materials used for soldering gold, as well as certain gold alloys, still used by goldsmiths. Martin Ruland (Lexicon alchemiae) explains chrysocolla as molybdochalkos, a copper-lead alloy. In Leyden papyrus X recipe 31 chrysocolla is an alloy composed of 4 parts copper, 2 parts asem (a kind of tin-copper alloy) and ...
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