Transient heat transfer and fluid dynamics during the melt spinning process of Fe₇₈Si₉B₁₂Mo amorphous alloy

Abstract

A numerical model of heat transfer and fluid dynamics in the melt spinning process is developed based on the coupled Navier-Stokes and heat conduction equations. The thermal and velocity fields inside the melt puddle are calculated using the SIMPLE algorithm. The average cooling rates across the whole thickness of the puddle are characterized for different wheel velocity. The experimental investigations of thermal field and quenching rate of Fe₇₈Si₉B₁₂Mo amorphous alloy are conducted with the help of an infrared thermovision technique. It is shown that the calculated average cooling rate is in good agreement with experimental results over the greater part of the puddle, except for that near to the up-meniscus and down-meniscus.

Key words:

• Heat transfer
• Flow dynamics
• Melt spinning process
• Amorphous alloy