Artículos de revistas
Biot number behaviour in the Chill Block Melt Spinning (CBMS) process
Fecha
2016-06Registro en:
Pagnola, Marcelo Rubén; Malmoria, Mariano Esteban Noe; Barone, Marcelo Lucas; Biot number behaviour in the Chill Block Melt Spinning (CBMS) process; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 103; 6-2016; 807-811
1359-4311
CONICET Digital
CONICET
Autor
Pagnola, Marcelo Rubén
Malmoria, Mariano Esteban Noe
Barone, Marcelo Lucas
Resumen
This paper shows the change obtained in the Biot number (Bi) during the adhesion interface and the contact between phases, where the cooling and solidification of the ribbon obtained by the CBMS process occurs. This change shows an increase in the number of Bi according to the tangential velocity of the copper wheel (Vx) in the pressure range of the tests that define the ejection speeds in the nozzle (Vo). The present study demonstrates that a zone where Vo is close to 2 m/s appears, and a transition of the Bis/l numbers from magnitudes below unity until this value is exceeded can be observed. In this study, the Bis/l > 1 values indicate that Newtonian cooling occurs during the ribbon’s solidification process and show that the convective forces on the external part of the solidifying mass begin to influence the amount of heat transferred during the liquid/solid phase in the adhesion zone.