|
|
| |
| |
| [674] Product Testing - X1 White Gold |
When it comes to white gold, my customers want the brightest, whitest white they can get -- and some are not willing to pay the premium prices palladium can command. So where do manufacturers turn for a bright white alloy that doesn ot require rhodium plating? Stuller Inc. in Lafayette, Louisiana , may be the place. When I first saw the new X1 nickel-white gold alloy, which falls into the Grade 1 category of the White Gold Whiteness Index, I was impressed by its color. But the true question was how it would perform in my casting shop.... (2005)
 Complete Story |
| Show me more articles from: [AJM]|[Linus Drogs] |
| Releated Categories: [Metallurgy] |
| ISBN: B00006K39S |
| [834] Road Testing Argentium Sterling |
Invented in 1996 by Peter Johns, a professor of silversmithing at Englands Middlesex University, Argentium[R] Sterling Silver, like traditional sterling silver, is at least 92.5 percent pure silver. But unlike traditional sterling, which is 7.5 percent copper, Argentium sterling has a small amount of germanium instead of some of the copper. So how does that change things?.... (2006)
Complete Story |
| Show me more articles from: [Art Jewelry Magazine]|[Cynthia Eid] |
| Releated Categories: [Metallurgy] |
|
| [219] Tarnishing Of Gold Jewellery And Black Skin Smudging |
Tarnishing is superficial corrosion of the carat gold surface and is evident by a usually dark discolouration - the tarnish film. Pure gold, of course, is not susceptible to tarnishing and this property is generally not greatly reduced by alloying to carat golds as long as the gold content is high enough.... (2003)
Complete Story |
| Show me more articles from: [The World Gold Council]|[Chris Corti] |
| Releated Categories: [Metallurgy] |
|
| [221] Testing Precious Metals and Their Alloys |
The purpose of precious metal testing is to determine, first, whether a given sample is precious or base, and, second, to determine what proportion of an alloy is precious. Sophisticated equipment is used in a precious metal laboratory to determine content and purity values with great precision, but our attention here is given to methods a working goldsmith can use in the studio to determine metal content to a practical degree of accuracy..... (2001)
Complete Story |
| Show me more articles from: [The Theory and Practice of Goldsmithing]|[Prof. Dr. Erhard Brepohl] |
| Releated Categories: [Metallurgy]|[Beginner's Corner] |
| ISBN: 0961598492 |
| [507] The Heat Is On - About Heat Treating Metals |
Heat treatment changes the microstructure of a metal or alloy. It is a process that may be applied after casting, or during or after fabrication. Since mechanical properties, such as strength, ductility, hardness, and toughness, and chemical properties, such as corrosion resistance, are in part dependent on microstructure, heat treatment can have a profound effect on them. There are a variety of reasons for heat treating gold, including, but not necessarily limited to, the following: To ease polishing, reduce wear and damage on the finished surface, increase strength, and increase corrosion resistance. Heat treatment can also be used to increase ductility after work hardening or to impart a springy quality to components such as money clips, catches, and clasps..... (2005)
Complete Story |
| Show me more articles from: [AJM]|[Gary Dawson] |
| Releated Categories: [Metallurgy] |
| ISBN: B00006K39S |
|
|
|
|
| |
