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...becomes cherry red in colour, at 800°C, the oxygen is released by a quick acting valve. The quality of the cut is governed by the oxygen vent size, oxygen pressure, cutting speed and pre-heating flames. Plan [Diagram to demonstrate 'Flame cutting' - see article ] Manufacture: A small amount of metal is pre-heated to the oxygen ignition temperature using a pre-heating...

...become superplastic, enabling them to be deformed into complex die shapes in a single operation using low pressure air and low cost tooling...Female forming: Blank coated with graphite-releasing agent, preheated in separate furnace. Transferred to double-domed hydraulic press, with built-in die heaters in the domes. Air pressure applied to expand sheet into close contact...

...becomes available and as industry realises the full potential of the process, the cost will become increasingly competitive. Process finds its major use in tooling for cutting, pressing, punching, extrusion, moulding and stamping. Typical applications, materials and results are shown below. Application Material Result Paper slitters 1.6%Cr-1%C steel Cutting life x 2...