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Presentation of Indutherm Powder Atomisation Plant
Precious metal powders for innovative production technologies
Was this a scientific conference at metal casting technology manufacturer Indutherm in Walzbachtal? This was certainly the impression gained when reading the many titles on the name tags of the guests in the conference room and the production halls at Indutherm on 14 November 2014. Actually Indutherm had invited these guests to a special product presentation. It was the first public demonstration of powder atomisation using the Indutherm atomiser. Managing Director Peter Hofmann and Head of Development Dr Jörg Fischer-Bühner explained the functional principle and the numerous possible applications of metal powders recovered with the machine. Dr Fischer-Bühner emphasised the special challenges during development: “The precious metal industry and metallurgical research require only small quantities of metal but they must be in highest quality. Metal loss here is just as taboo as impurities caused by residue in the machine, called cross-contamination.” The Indutherm machine was developed in co-operation with the University of Bremen in a three-year subsidised research project and was conceived to meet precisely these requirements. Rapid alloy changes for test series are now just as feasible as loss-free atomisation, for example of gold alloys. The machine is quick and easy to clean free from residue. Gas flowing off is filtered several times to prevent loss. The presence of highly qualified representatives from renowned companies in the industry shows how much research institutes and precious metal processing companies are interested in this type of machine. Among the non-metallurgists, the questions and suggestions made by the visitors showed a high level of expertise; the developers, who included project manager Dr Fischer-Bühner, designer Enzo Marciano or Dr Uhlenwinkel from the University of Bremen, were eminently capable of fielding these questions. What are these fine metal powders used for? Dr Fischer-Bühner explains: “Firstly, they are used in innovative materials such as metal ceramics or metal glasses, in solder pastes and in lacquers. Or they are used as working materials for new production processes such as MIM (metal powders are injected in moulds and then hardened) or SLM (Selective Laser Melting). In the jewellery business, SLM is currently creating totally new design and production possibilities: the gem is produced with extremely high precision straight from the precious metal powder by laser beam.”More about AU 1000
Our new High Speed Casting (HSC) system is our answer for the latest jewelry design trends.
In Jewellery News Asia's July issue, Company managing director Peter Hofmann explained how Indutherm’s products serve the jewellery industry, its latest innovations in metal powder systems, and the Indutherm solutions for casting filigree designs.
Indutherm presented the new Atomiser at the EURO PM2014 in Salzburg
Compact and highly efficient TF series tilting furnaces
The completely new developed generation of tilting casting machines TF 1200, TF 2000 and TF 4000 substitute their correspondent predecessors, which are used in the jewellery industry and in precious metal foundries. They are equipped with new high performance induction generators that reach the melting point significantly faster and ensure thorough mixing and homogenisation of the molten metals. Depending on the model, the capacity ranges from a crucible volume of 1200 to 4000 ccm, corresponding to approx. 60 kg of 18 ct. gold.
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In a recent tendering process for a range of precious metal smelting machines for a large metal refinery, the principal aim was to achieve defined casting volumes per hour. The providers in the final round had to demonstrate the capabilities of the machines under working conditions (requirement: smelt 100kg of silver and cast it into ingots within an hour). With its TF 12000 tilting casting machine (60kW, max. 1500 degrees C, 12,000cc crucible volume), Indutherm was up against a competitor machine with more than twice the power. Yet Indutherm was faster - and offered the additional benefit of substantially less energy consumption.
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