World's largest sintering furnace offers outstanding economy

World's largest sintering furnace offers outstanding economy

Vacuum News Larry Hansen, Varian’s Executive Vice-President, Technology, said the arrangement, known as a cross licensing agreement, is limited to an ...

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Vacuum News Larry Hansen, Varian’s Executive Vice-President, Technology, said the arrangement, known as a cross licensing agreement, is limited to an exchange of patent licensing rights in the companies’ current business areas. Hansen said the agreement provides Varian with access to a broad range of patented technology, including developments in such areas as superconductivity and factory automation in device fabrication, which may prove beneficial in its Communications, Analytical Instrument, and Medical and Semiconductor Equipment Operations. Likewise, for example, IBM will have access to Varian’s patented semiconductor manufacturing technology for use in its internal chip manufacturing processes.

By reducing the process of sintering such large components to a single machine operation, Pfeiffer’s special design has created substantially improved production economy. This is apparent in both closer control of the process and reductions in process time, especially by eliminating the transfer of parts from a dewaxing unit to a separate hot isostatic press (HIP) system. The COD 833 RS is one of a complete range of furnaces produced by Pfeiffer, which in addition to sintering cover heat treatments such as brazing, annealing and induction casting. Other plants of COD type are available with working volumes of 2.6-920 litres and temperatures of 1600-22Oo’C. Keith Watkins Balzers High Vacuum Ltd Northbridge Road, Berkhamsted, Hertfordshire HP4 1 EN Tel 04427 2181 Telex 82209 VACUUM G Fax 04427 71727

‘The end result will be opportunities for both companies that could enhance next-generation products for Varian and IBM specifically, as well as advancing U.S. technology in these fields generally,’ noted Hansen.

Oxford

Instruments

Materials

Science

Group

moves

The Materials Science Group is now at the new factory in Eynsham The new address is : Oxford Instruments Ltd Eynsham, Oxford, OX8 1 TL Tel 0865 882855 Telex 83413 Fax 0865 881567

World’s largest economy

sintering

furnace

offers

outstanding

The biggest vacuum furnace in the world for pressure sintering, built by the Pfeiffer division of Balzers, has been delivered to its customer, Krupp Widia of Essen. Known as the COD 833 RS the furnace will be used by the company for the sintering of large hard metal products. The process for this, contained in a single machine, includes dewaxing, vacuum sintering and pressure sintering with argon gas under pressures of up to 100 bar at approximately 1500°C. Under normal working conditions this integrated graphite furnace gives a very high temperature uniformity of i_3°C. made possible by six separately controlled heating circuits and a particularly effective multi-layer insulation.

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largest sintering

furnace

Balzers turbo

pumps win the SEM market

over

Cambridge Instruments, the UK company that produced the very first commercial scanning electron microscope, is the first European manufacturer to standardise on the use of turbomolecular pumps. The pumps are being supplied by Balzers, and the decision to fit them as standard is regarded as a landmark in the development of the turbomolecular pump design. Of particular importance is the fact that Cl is specifying the Balzers pumps for each version of its new generation Stereoscan instruments, recently introduced as the world’s first all digital research SEM. According to Cl, the advances in computerisation and image storage that have been incorporated also make it the most automated SEM available. The Balzers turbomolecular pump’s crucial contribution to this efficiency is its rapid, ultra-clean and vibration free operation. Such qualities are essential to the SEM process, as the pump is used to create the high vacuum under which the specimens are studied. Although they are widely used by the majority of high tech’ industries, most SEM manufacturers still only offer turbo pumps as an option, preferring to specify oil diffusion pumps as standard. This is because, despite their superior performance and widespread acceptance in other areas, turbos are still resisted in the SEM market because of past concern with reliability and vibration problems.

offers outstanding Cambridge

instruments

turbo-pumped

stereoscan.

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