Factors affecting the amount of nodulant added
The amount of nodulant added depends on the characteristics of the nodulant itself, the characteristics of the iron, the size of the casting, the wall thickness, the grade of the ductile iron and the spheroidization process.
The characteristics of the nodulant mainly refers to the composition, specific gravity, lumpiness and metallurgical quality of the nodulant. The characteristics of the iron refers to the composition of the iron, especially the sulfur content, the temperature of the iron, the metallurgical quality of the iron. The nodulant treatment process mainly includes, the shape of the iron ladle, the size, the degree of nodulant coverage, etc.
In addition, the amount of nodulant added also with the size of the iron ladle, shape, the height of the dike in the ladle, the degree of spheroidizing agent coverage and other factors.
Generally speaking, if the iron package is fine and high type, the dike is higher, the coverage of the nodulant will be better, the iron oxidation is light, the amount of nodulant added will be reduced.
In a word, there are many factors that affect the amount of nodulant added, mainly including the sulfur content of the iron, the temperature of the iron, the composition of the nodulant and its specific gravity, etc.
