Effects of Vibration and Electromagnetic Forces on Casting: A Literature Review

摘要

Vibration of electromagnetic stirring during casting can improve the fluidity of the melt, the grain size, and the surface finish of the product, and it can contribute to degassing. The amount of grain refinement should be more substantial when ultrasonic vibration is used instead of impulse vibration, which is in turn superior to low-frequency vibration. Oscillation rotation and horizontal circular vibration are newer techniques currently being developed. Application of an electric field or pulse discharge during casting is another method used to affect the solidification of the molten metal. 20 refs. (ERA citation 13:007616)