Ba kamar tsarin cire kayan abu ba, extrusion aluminum shine tsari na kafawa.A cikin extrusion, danyen aluminium yana fara zafi da farko sa'an nan kuma a tsara shi zuwa ɓangaren da ake buƙata ta amfani da rago don tura shi ta hanyar mutuwa.Aluminum extrusion yana amfani da zagaye hannun jari na aluminum ko aluminum gami, da ake kira "billets", don samar da sassa tare da kafaffen bayanan martaba da siffofi.
Da farko, aikin extrusion aluminum yana buƙatar tanderu kawai da latsa tare da mutu.Don extrusion, billet ɗin ana fara mai da zafi zuwa babban zafin jiki don sa ya fi ductile.Zazzabi na iya zama kusa da zafin ɗaki ko kuma ya kai girman zazzabi na recrystallization.Dangane da wannan zafin jiki, ana kiran tsarin sanyi, dumi ko zafi extrusion.