Ductile iron melt treatment process

- Mar 08, 2021-

The alloying treatment has made a qualitative leap in the properties of cast iron, and at the same time some special purpose cast irons such as wear resistance, corrosion resistance and heat resistance have been born. The use of inoculation to produce cast iron was also produced during this period. Spheroidizing agent and inoculant are the most important materials in the spheroidizing process, and they need to be stable in quality. At present, the commonly used spheroidization methods are as follows: In-package processing method (including straight-punching method, sandwich method and cover method), type internal spheroidization method, flow method, pure magnesium treatment process (including sub-package method and core-injection method) Line method).