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8 Sep 2001: Cold extrusion is possible for some metals giving better properties. Economics. ... Usually only economic for several thousand metres. Typical products. Tubing. aluminium window frames.

8 Sep 2001: As a result, a self-quench is usually sufficient. The equipment is very expensive and not economic for large surfaces, but automation is straightforward and very precise control can be achieved.

8 Sep 2001: Economics. Can be economic for any batch size from one-offs to mass production (with or without automation).

8 Sep 2001: Economics. Cycle time is limited by heat conduction out of the mould, so increases dramatically for larger wall thicknesses. ... The long cycle times usually limit economic batch sizes to between 500 and 10,000.

8 Sep 2001: Economics. Basic equipment costs around £10,000, but automation can increase this significantly.

8 Sep 2001: In addition to these processes, there are a variety of "hot processes" such as welding and brazing which can often provide stronger and more economic joints for metal parts.

10 Dec 2001: Since 1983 the Economics prize has been won four times, most recently by Professor Amartya Sen, Master of Trinity College for his contribution to welfare economics. ... In 1968, the Sveriges Riksbank (Bank of Sweden) instituted a further Prize in

12 Jan 2001: He was the Chair of Real Estate Finance and Urban Economics at the University of Wisconsin's Business School. ... that would collaborate closely with the North American business schools who are already specialising in real estate and urban economics.

8 Sep 2001: Economics. Cycle time is limited by heat transfer, or curing time and is usually over 1 minute. ... The low production rate means that it is only usually economic for batch sizes in the tens of thousands.

8 Sep 2001: Economics. It is normal to try to reduce the amount of drilling required in a component by careful design - but when an accurate hole is required, drilling has little competition.