It is important to choose the right smelting equipment(induction melting furnace). The progress of the iron castings is a good example of this. The cupola is the most important equipment in the field of cast iron smelting, and it is also the first place that people consider, and it will always have this status in the future. Moreover, this smelting equipment also undertakes the smelting task around 70%. The development of many cupola technology is also progressing closely with the progress of machinery and equipment, and this technology is also saving energy and reducing Energy consumption, with high productivity, has always played an important role in the field of smelting.