VACUUM PUMPING SYSTEM REDUCES INDUCTION MELTING COSTS

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VACUUM PUMPING SYSTEM REDUCES INDUCTION MELTING COSTS
09 October 2001 - BOC Gases

Leading vacuum pump manufacturer BOC Edwards announces the launch of a dry-vacuum pumping system for use in vacuum induction melting. The new package helps manufacturers optimise furnace running times by considerably reducing the need for maintenance and consumables.

VIM furnaces are traditionally equipped with oil-lubricated rotary backing pumps. These pumps have high operating and maintenance costs. They require frequent oil changes and suffer performance loss as the oil degrades. There is also the risk of process contamination by the rotary pump oil.

Conversely, the new dry-pump VIM system from BOC Edwards requires very little maintenance. It has a large tolerance to particles created by the melt, and a clean residual vacuum, so there is no risk of contamination. It also offers improved cycle times and process efficiency compared to traditional systems.

The new package comprises a GV Drystar vacuum pump, Roots blower fitted with hydrokinetic coupling, and vapour booster. The integrated package is supplied complete with application-specific instrumentation. Systems are available for furnaces up to 12 tonnes, with pump speeds of up to 135,000m3/hr, and ultimate vacuums down to 10-4mbar.

http://www.boc.com

About: BOC Gases
Through its PGS line of business, BOC supplies gas and related solutions to the chemicals, petroleum, glass, water services, electronic packaging, fibre optics, hydrogen energy, metals and food industries. BOC helps meet customer needs in a variety of ways, from the supply of a single gas or application through to designing, constructing and operating fully integrated gas and utilities schemes.

The BOC Group, which serves two million customers in more than 50 countries, is one of the largest and most global of the world's leading gases companies. It employs some 44,500 people worldwide and had annual sales of over £4.3 billion in 2003. Further information about The BOC Group may be obtained on the Internet at www.boc.com

The BOC Group has an international portfolio of companies grouped for management control and reporting into three lines of business: Process Gas Solutions, Industrial and Special Products, and BOC Edwards. It also has a specialist logistics business, Gist.

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