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The 24th Santa Fe Symposium® on Jewelry Manufacturing Technology was held in Albuquerque, New Mexico, the US, between May 16-19, 2010. The symposium had a large number of presentations that covered a wide range of topics related platinum jewelry manufacturing technology. One of the highlights of the event was the presentation Ulrich Klotz, FEM, Germany, on a major research project carried out on the investment casting of platinum alloys jointly by several industrial partners. The project was funded by Platinum Guild International and was the first significant basic research carried out on the platinum casting process to improve the casting technology. Casting trials were conducted in a centrifugal casting machine with induction heating, atmosphere control and temperature measurement. Four types of investment powder were investigated and many casting trials were carried out to analyze the influence of casting parameters, such as melt temperature, flask temperature, atmosphere, alloy, and investment type.


Corti C.W.,COReGOLD Technology Consultancy
Platinum Metals Review | Year: 2011

The 25th annual Santa Fe Symposium attracted a record attendance of 165, with delegates from 11 countries worldwide. The soldering of platinum received attention this year with Jurgen Maerz reviewing the topic in his presentation, 'Platinum Solders: Proper Use and Application of Platinum Solders in Jewelry Making.' The lower melting solders tend to be based on palladium-silver alloys and do need flux to prevent oxidation. Solder flow is often poor over distance, so Maerz recommends placing many small pieces of solder along a seam close together and following the seam with the soldering flame. Casting trials in collaboration with Legor Group Srl, Italy, showed that 950 PtRu still results in large amounts of scattered shrinkage porosity, even with a double top sprue. He noted the marketing of platinum- or palladium-containing sterling silver alloys but observed that these do not have good hardness values, although improved tarnish resistance is claimed over conventional sterling silvers.


Corti C.W.,COReGOLD Technology Consultancy
Platinum Metals Review | Year: 2012

Martyn Pugh, a jeweler, shared his experience regarding he challenges involved in crafting a claret jug from pure palladium. He informed that the first point was to establish what techniques used for the gold jug could be transferred to palladium. The craftsman, expert in metal spinning and who had made the body of the gold jug, was approached to solve these issues. He had concerns that the malleability of palladium was insufficient to spin the body from a flat disc. Pugh consulted Johnson Matthey, whose Noble Metals business had experience of manufacturing large items for industrial and scientific applications. The Johnson Matthey metal spinner was confident he could produce the shape required from the material. Johnson Matthey utilized existing formers in brass and some new ones were made in steel for the stopper, spout, and foot sections of the jug.


Corti C.W.,COReGOLD Technology Consultancy
Platinum Metals Review | Year: 2014

The 28th annual Santa Fe Symposium was held from 18th-21st May 2014 in Albuquerque, New Mexico, USA, and attracted another large attendance of delegates from 15 countries worldwide, representing a good cross-section of those involved in jewelry manufacturing from mass manufacture to specialized craft operations. The investment (lost wax) casting of Pt jewelry is not an easy process and casting porosity is a feature that casters find difficult to avoid. Currently in the jewelry industry, rapid prototyping technology is used to produce plastic models direct from digital files by 3D printing, using photocurable polymers. These are, in turn, used as models to directly investment cast the final part in precious metals. Several companies have developed suitable equipment for DMLS and some alloy companies are collaborating with them to develop the technology, using suitable precious metal powders for the process, including Au and Pt. Three presentations were focused on this new manufacturing route.


Corti C.W.,COReGOLD Technology Consultancy
Platinum Metals Review | Year: 2012

The 26th annual Santa Fe Symposium® was held in Albuquerque, New Mexico, US, from 20-23, May 2012. The symposium was attended by delegates from 16 countries from around the world, confirming the more optimistic outlook of the US jewelry industry noted in 2010 and 2011. The event had a strong program of presentations covering a wider range of topics. Platinum and palladium featured strongly in terms of technical content and sustained the continuing interest in these jewelry materials. Johnson Matthey New York, Platinum Guild International and Palladium Alliance International, the major sponsors of the conference were given the opportunity to have a display table in the lobby area, with a strong presence and their technical brochures and publications were quickly dispersed.

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