Heat transfer analyses of continuous casting by free jet meltspinning device

Abstract

New method for determining contact resistance through variable heat transfer coefficient is introduced which takes into account physical properties of the casting material, process parameters and contact time/length between molten material (melt puddle) and chilling wheel and enables cooling rate prediction before experiment execution. From the results can be concluded, that those process parameters which determine the thickness of the melt puddle in the downstream and consequently the ribbon thickness have major influence on cooling rate of the ribbon. In the case of continuous casting, heat balance of the wheel is calculated and influence of the chill wheel cooling mode on cooling rate of metallic ribbon is analyzed.

Keywords

• continuous casting
• rapid solidification
• metallic materials
• heat transfer balance
• heat transfer coefficient
• numerical modeling