Using a servo-controlled billet positioning system to deliver both accuracy and high speed, the enables extruders to boost billet temperature, line speed and hence production rates. In addition to this the delivers greater control of billet quality by providing linear temperature gradient thus improving extrusion press productivity and die life. These features result in lower scrap rates resulting in greater profits and increased market competitiveness for the producer.
Depending on the application and the size of the billets being produced, the induction coil is graded to provide the required fixed taper gradient. The standard taper is 10 deg C per 100mm which is equivalent to 55 deg F per foot with a starting temperature of 350 deg C (662 deg F).