Prospects of Ultrasonic Solidification Technology

The research on the effect of ultrasound on the solidification process of metals began in the 1930s. There was a climax in the 1960s, but there was not much progress in the 1970s and 1990s. This aspect is due to the rapid development of solidification and fine-grain technology such as inoculation treatment, modification treatment, electromagnetic stirring and microalloying in the material field during this period, and people are more willing to accept solidification and fine-grain technology with simple processes. On the other hand, the high temperature resistance of the horn and the high power requirements of the ultrasonic restrict the application of this technology. It is worth noting that after mankind enters the 21st century, on the one hand, the increase in environmental awareness calls for the birth of green materials. Green materials not only require reducing the environmental pollution caused by material preparation, but also reducing the pollution of the material itself, that is, reducing the content of elements and improving the reusability of materials. The pollution-free physical fine crystal technology will undoubtedly attract attention in the new century. On the other hand, the rapid development of science and technology in the fields of physics, materials and electronics has made it possible to produce high-power ultrasonic equipment and high-temperature horns. In particular, the birth of non-contact electromagnetic ultrasonic is the application of this ultrasonic technology in metal preparation. Open up a broader space. Therefore, we believe that the ultrasonic solidification fine-grain technology will once again become a research hotspot in the material field, and the electromagnetic pulse ultrasound with high output peak and low load will become a new bright spot in the ultrasonic solidification fine-grain technology.