Vacuum News eliminating the main source of inflation and stabilising the cost of liquid nitrogen produced. Philips Automatic Liquid Nitrogen Plants, supplied more than 10 yr ago are still in everyday use ; proof of Philips designed-in reliability and service back-up. Today many organizations are reaping the benefits of leasing essential modern laboratory and industrial equipment. Leasing is just like taking out a mortgage--only better in that the interest charged is fixed and therefore you know what regular monthly payments you will be making throughout the duration of the agreement. At the end of the leasing period you can choose to either purchase the equipment outright for a small percentage of its original cost or to carry on leasing at a nominal rate. Alternatively, should a "windfall' come your way during the leasing period, you can buy the equipment for a percentage of its original cost, which decreases as the period proceeds. Whichever method you choose, you stand to reduce considerably the cost of obtaining liquid nitrogen whilst investing in equipment that will give constant reliable service long after the agreement has ended. Pye Unicam Ltd, York Street, Cambridge, UK
Bob Wheal joins Balzers Balzers High Vacuum Ltd announce the appointment of Robert Wheal B.Sc. to the company to add to their expertise on vacuum coating. Mr Wheal was formerly senior process engineer at Texas Instruments Semi-conductor Division at Bedford where he was responsible in particular for vacuum evaporation and metal contact processing, and latterly for evaporating alloys and all photoresist work. Balzers High Vacuum Ltd, Northbridge Road, Berkhampsted, Herts, UK
A complete range systems f r o m t h e
of
industrial
vacuum
pumping
General Engineering Co.
The General Engineering Co. (Radcliffe) Ltd now offers a comprehensive range of high vacuum pumping equipment capable of solving the majority of industrial vacuum problems. Existing products include oil-sealed vacuum pumps with operating ranges from 3 to 1350 m 3 h -1 and liquid ring type pumps up to 3750 m 3 h -1. Mechanical booster (Roots) pumps used in conjunction with either of these t w o pumps will give pumping speeds in excess of 50,000 m 3 h -1. The recent introduction of the steam ejector vacuum pump to this range has enabled systems producing up to 850,000 m 3 h -1 to be offered. Liquid ring vacuum pumps are now available mounted on to an integral recirculation tank as a complete packaged unit. These are fitted with a non-return valve, a water level sightglass and a water line check valve. The compact design reduces the floor space required by conventional recirculation systems and eliminates the need for any interconnecting pipework. A further development has been the combination of liquid ring and oil-sealed pumps for applications where large amounts of water vapour are to be handled. In these instances, the liquid ring pump is used to evacuate the separator of the oil-sealed pump to a pressure which will prevent condensation of any volatiles or condensables in the pump oil. Packaged systems such as this are available for particular duties such as deaeration processes in thermal power stations. General Engineering Co. (Radcliffe) Ltd, Bury Road, Radcliffe, Manchester, UK 624
Sole rights for continuous casting machinery The General Engineering Co. (Radcliffe) Ltd has recently secured the sole licencing rights to manufacture and market, in the U.K. and Europe, continuous billet casting machines designed by Rokop Engineering Corporation, Pittsburgh, U.S.A. Rokop has been involved for many years in the development of straight and curved mould casters of high and low head design for the steel industry. The improved yield and operating cost benefits of continuous casting are well known, but Rokop's experience and design philosophy, based on practical knowledge of the main requirements in continuous casting, has resulted in a range of machinery with several patented features which represent significant technological advances. Rokop has simplified the entire process, resulting in marked cost benefits particularly in the area of operator training. The patented, curved starting bar principle removes the need for vulnerable guides and rollers in the potential break-out regions below the mould. Additionally, the bar is automatically stored and is fed into the mould by reverse driving the withdrawal rolls. Patented mechanical cutting torches, operating automatically, are simple in design and operation and cut to accurate pre-set lengths. This arrangement dispenses with the need for more costly and potentially troublesome hydraulic or electronic controls. Withdraw rolls are individually driven, permitting minimum roll pressure. This, combined with external water cooling, extends roll life and improves billet quality. These features of the Rokop design are aimed at lower installation costs, maximum production, minimum downtime, a consistently high degree of quality and an excellent level of operator safety. General Engineering are well equipped within their 3 U.K. plants to handle the anticipated demand which is expected to come from steel works, rolling mills, wire, bar and tube manufacturers. General Engineering Co. (Radcliffe) Ltd, Bury Road, Radcliffe, Manchester, UK
Heavy plant For many years, General Engineering Co. (Radcliffe) Ltd have been internationally known as major manufacturers of a wide range of industrial plant based on vacuum principles. The present trend throughout industry is one of expansion, not merely by extending the range of interests but also by greater standardization of existing plant with a proved technology and production record. Plant manufactured by General Engineering is now categorized under the following headings :
Transformer drying and impregnation--Conventional and vapour phase systems to suit the smallest and all modern large transformers. Power and telephone cable plant--All paper insulated cables using d.c. core or indirect heating. Typical sizes 4 m dia x 3 m high. Vacuum drying and impregnation plant--From small laboratory units up to large installation, typically 2 m dia x 3 m high.
Oil degassing units--Standard range of units from 100 I h - 1 up to several tonnes h -1 and to specific requirements. Resin casting and encapsulation--A wide range of standard and purpose-built equipment. Specialized vacuum plant still forms a large part of General Engineering production, much of which is subject to rigorous manufacturing and performance specifications. An example of this type of plant is the 2 m dia vacuum/pressure vessel which is used for vacuum bonding composite airframe structures, and is currently in use at the Royal Aircraft Establishment, Farnborough. The operating temperature of this equipment is up to 200°C with temperature uniformity of ~=2°C in the work area.
Vacuum News in the non-vacuum field, electrical component manufacturers are showing considerable interest in electrostatic coating. This new powder technology, mainly developed in the U.S.A., is being applied to coaters for both wire and motor irons; coating and curing equipment is now available as a package installation from General Engineering. General Engineering Co. (Radcliffe) Ltd, Bury Road, Radcliffe, Manchester, UK
Leybold-Heraeus Ltd, U.K. subsidiary of the West German parent company, in announcing the acquisition, said that Inficon had previously negotiated a non-exclusive licence to sell their monitors and controllers in U.K. before this recent move.
Vacuum furnaces Following the signing of an agreement with Metvac in 1976, General Engineering Co. (Radcliffe) Ltd are now producing general purpose heat-treatment vacuum furnaces with facilities for oil and water quenching and carrying out a wide range of metallurgical surface treatments with carburising and reducing gases at sub-atmospheric pressure.
Who said we couldn't deliver the goods ? An export success story that will possibly go unchallenged for a long time, for sheer speed, has come out of the Camberley based Pennwalt Ltd.
Leybold-Heraeus Ltd will now take over the pre- and post-sales service for new and existing equipment in the U.K. Leybold-Heraeus Ltd, 173 Greenwich High Road, London SE10, UK
The latest extension to the range is the production of a bell-type vacuum furnace for annealing wire. The maximum charge weight is 12 tonnes and the dimensions are 2.2 m usable dia × 2.6reusable height (max). An order has been received from Cold Dawn Products Ltd, Bradford, for one of these furnaces to be delivered and erected during September 1977.
Early in December last year, A. Toms, Marketing Manager of the Stokes Vacuum Division of Pennwalt received an enquiry from Russia for an unspecified number of Stokes vacuum pumps for immediate delivery during 1976, the task was not made easier by the fact that the long Christmas break was looming, with the inevitable postage delays that usually occur this time of the year. To cut a short story even shorter, quotations were sent to Moscow and on the 19th December came the order : 'deliver 17 pumps before the end of the year'. On the face of it, an impossible task.
Resistance heated vacuum furnaces cover a wide range of applications from production of high-quality glass quartz, surgical instruments, tool steels, filaments for halogen lamps, production of parts for aircraft engines, and annealing of copper wires. The furnaces produced are suitable for use up to 3000°C and vacuum levels down to 1 × 10 -6 torr are obtainable. General Engineering Co. (Radcliffe) Ltd, Bury Road, Radcliffe, Manchester, UK
The engineering and shipping departments sprang into action ; the only way to meet the deadline was to find a Russian vessel leaving an English port before the end of the year. As a Russian freighter was leaving Tilbury on the 29th December, packing and shipping arrangements were made, and the pumps, worth over £70,000, for use in the Russian Process Industry, arrived at Tilbury in time for sailing. We have just heard that the pumps have now been received in Leningrad. The speed at which Pennwalt worked deserves praise.
Vacuum Equipment Services announce that, in close co-operation with T.W. Associates of Crawley, Sussex, they have been appointed distributors of the N.G.N. range of rotary piston high vacuum pumps, diffusion pumps, gauges, valves, components and plant, manufactured by N.G.N. Ltd. of Accrington, Lancs., a member of the internationally known J. H. Fenner Group of companies.
Pennwalt export something like 80% of its Camberley production and last year it was worth in total some £4 million. Pennwalt Ltd, Doman Road, Camberley, Surrey, UK
Dow
Corning
names
U.K.
and France Sales
Manager--Elastomers
V.E.S. will continue to provide a fast overhaul, repair and planned maintenance service for most makes of high vacuum pumps and process plants. Stocks of N.G.N. equipment will be held by V.E.S. at their headquarters near Biggleswade, Bedfordshire, and advice on high vacuum applications and techniques will be available, together with fast deliveries of pumps, components and spares. V.E.S. has several 'famous names' among users of their Maintenance Service. One of them, the National Physical Laboratories at Teddington, has just renewed contracts for the fourth consecutive year. Vacuum Equipment Services, Brags Lane, Wrestlingworth, Sandy, Beds, UK
Ernst Lohbeck has been named Sales Manager--Elastomers for Dow Coming with responsibil~W for administering and developing sales in the United Kingdom and France. He will be located at the company's Reading, U.K., office. Dow Corning produces a complete line of silicone elastomers for industries such as automotive, electrical and electronics, construction, marine and aerospace. Some of the most important properties of the elastomers, marketed under the trade name of Silastic(~), include: excellent resistance to weathering, excellent tear strength, good tensile strength, good elongation characteristics, high dielectric strength and excellent retention of chemical, mechanical and electrical properties over a wide temperature range. Dow Coming, Chauss~e de la Hulpe, 177, PO Box 7, 1170, Brussels, Belgium
Inficon joins Leybold-Heraeus Group Leybold-Heraeus G.m.n.H. ~ Co. KG, Europe's largest vacuum
engineering company, have acquired Inficon Inc. of Syracuse, New York State. This makes Inficon a wholly-owned subsidiary, which is already trading under the name of Inficon Leybold-Heraeus Inc. Inficon, in a comparatively short time, have become well known sophisticated microprocessor-controlled sensors and digital electronic instruments for measuring and controlling vacuumdeposited and sputtered layers.
for
Vacuum furnace manufacturers land £¼ m i l l i o n export o r d e r Two vacuum resistance de-waxing and sintering furnace complexes have been sold by Vacuum Engineering (Scotland) Ltd, Motherwell Lanarkshire, to Electro Export/Import of Rumania as part of a £¼m export order. The equipment is to be installed in the works of Intreprinderea Mecanica Fina in Bucharest and will be used for manufacturing 625