Naslov
Material flow by the extrusion of Hollow sections of aluminium through Hollow Dies

Autori
Duplančić, Igor ; Prgin, Jere

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 4th International Aluminum Extrusion Technology Seminar, Vol 2 / Aluminum Extruders Council ; Aluminim Association - Chicago (IL) : Aluminim Association, 1988, 235-240

Skup
4th International Aluminum Extrusion Technology Seminar

Mjesto i datum
Chicago (IL), Sjedinjene Američke Države, 11.04.1988. - 14.04.1988

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Material Flow; Hollow sections

Sažetak
This work presents the development of a new procedure used in analysing the material flow during its extrusion through a hollow die, applied in the tube and hollow section production. The methods concerns the analysis of surface shape in the tube obtained in joining two billets during a continuos extruding process. The joining length runs along the longithudinal axis of the tube forming a smooth three-dimensinal form ; its shape depending on the material of the joining surface has been defined by the length dz taken lomgitudinally at separate cross-sections of the tube. The experiments done have shown the interaction of the temperature, the degree of deformation and height of the die welding chamber on the shape of the joining surface. Thus the joining length dz is greatly affected by the degree of deformation and the temperature and somewhat by the height of welding chamber. The tests were done in the laboratory by extruding the Al99, 5 tubes, so as to abtain the opzimization of extrusion parameters, Taking the minimal length dz as the base. It has been shown that the joining length dz in tubes may be shortened by increasing the temperature, reducing the degree of deformation and lowering the height of the die welding chamber

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA