Comparison of the Thermo-mechanlcal Conditions in an Industrial Sized Hot Aluminium Extrusion Process in relation to those in corresponding small Sized Laboratory Processes

摘要

It is common to use scaled down laboratory extrusion processes in order to physical model the industrial big-sized aluminum profile extrusion process. In industrial extrusion use of billets with a diameter size of -210 mm, or above, is common. In the scaled-down laboratory processes half this size is often used, and in mini-extrusion also l/7Th of this size. An investigation has been undertaken in order to study what are the thermo-mechanical conditions in extrusion processes of such different sizes of processes, and to what extent a small-sized process is able to physical model accurately the conditions in an industrial large sized process.