Continuous and Static Casting with Ultrasound

In all these technologies and applications, ultrasound above the threshold of acoustic cavitation can be introduced into the molten metal (eg. during the continuous casting process):

1. Ultrasonic grain modification technology (microcrystallization).
2. Ultrasonic filtering and refining of molten metal.
3. Degassing and de-foaming of liquid metals using high intensity ultrasonics.
4. Ultrasonic mixing and homogenizing of liquids is exceptionally efficient. Liquids and liquid metals that do not mix in normal conditions can also be mixed, homogenized and/or alloyed in high intensity ultrasonic reactors or in any casting process.

The advantages of MPI’s ultrasonic technology is that we can separate the ultrasonic transducers from the liquid metal using very long metal wave-guide rods, yet still introduce high ultrasonic power into the liquid metal. This has been impossible to achieve in traditional ultrasonic metal processing technologies.

There is a lot of literature regarding benefits of ultrasonic metallurgy, yet this technology is still not widely applied. The reasons are well known: Traditionally available ultrasonic equipment for liquid metals treatment is still not compatible with high-volume in-line metal processing, and the high temperature of liquid metals presents an enormous problem to continuous operation of ultrasonic transducers. MPI’s technology overcomes these problems.

All ultrasonic casting technologies are environmentally friendly, nonpolluting and purely based on the physical effects of Ultrasound.