The development of Continuous Rotary Extrusion
The continuous rotary extrusion process was patented by the United Kingdom Atomic Energy Authority (UKEA) in 1972 and was subsequently commercialised in the metal processing industry in the production of aluminium and copper products. It is an innovative process which makes use of rod or particulate feedstock, as opposed to the cast metal billets used in a conventional extrusion press.

The most common applications for continuous rotary extrusion are in the aluminium and copper industries. However, the range of materials that can be processed continues to expand through research and development projects. Attention to end user feedback and market progression ensures maintenance of commercial relevance as the process advances. In general, Threesixty Parkegate Technology Continuous Rotary Extrusion is used where continuous lengths of product are required, varying in complexity and application.

Feedstock
• The most common form of feedstock for this process is rod, although bar and particulate feedstocks are occasionally used
• Feedstock rods can be processed in a range of diameters
• Continuously cast bars can be processed in a range of sizes
• It is also possible to process certain powder, particles and granules into solid product - please ask for information

The process
There are two continuous rotary extrusion processes, each with particular applications:

 Radial Extrusion - for the production of solid products and tubes
 Tangential Extrusion – for the production of sheathed product (extrusion not touching core) and/or clad (extrusion touching core) product