nodulizer used in Molten Iron

Calculated according to the percentage of the total weight of the molten iron, the general amount of nodulizer is 1.1% -1.5% of the weight of the molten iron.

The amount of nodulizer added is affected by four factors: the nodulizer itself, the characteristics of the molten iron, the size of the casting, the thin wall thickness, the grade of the nodular iron and the nodularizing process. In the production of ductile cast iron, the amount of nodulizing agent directly affects the comprehensive performance of ductile iron and the production cost of ductile iron.

When using nodulizer, the most important thing is the amount of nodularizer. Many manufacturers are inaccurate, which causes the problem of excessive nodularization or nodularization effect. So how much is proper to use?

For casting, the amount of nodulizing agent directly affects the various properties of molten iron, and also affects the size, brand, thickness and other issues of the casting. Therefore, it is very important to master the correct use of nodulizing agent The characteristics of molten iron refer to the composition of molten iron, especially the content of sulfur, the temperature of molten iron, and the metallurgical quality of molten iron. The nodulizer treatment process mainly includes the shape and size of the ladle, the coverage of the nodulizer and so on.

For the requirements of the size and shape of the ladle, the coverage of the nodulizer will directly affect the coverage of the nodulizer. Generally speaking, if the ladle is thin and tall, the dam will be higher and the nodulizer will be covered. It will be better, the molten iron will be lightly oxidized, and the amount of nodulizer added will be reduced.

For molten iron that requires sulfur content and temperature, it should be used correctly in accordance with the written and specific gravity of the nodularizer. Only by correctly understanding the method of nodularizing agent can the performance of the nodularizing agent be maximized, and at the same time, the amount of savings The effect of reducing costs!