Ultrasonic degassing & grain refinement of metal melts up to 1,800 ° C, can substantially improve the properties of castings, in particular, their microstructure and mechanical properties. Recently, new refinements to the technique using proprietary ultrasound technology provide significant benefits to industrial continuous casting, offering an alternative to argon degassing, replacement of standard master alloy additives, and substantial improvements to microstructure.

Here we will look at the mechanisms that underlie ultrasonic liquid metal interactions, in particular how they apply to ultrasonic degassing and grain refinement. Finally, we will look briefly at our ultrasonic degas technology as applied to industrial continuous casting.