What is a long-acting inoculant
The spheroidizing treatment is the base of ductile iron production, and inoculation treatment is the key of ductile iron production
The inoculation effect determines the diameter, number and degree of sphericity of the graphite spheres. In order to ensure the inoculation effect, the inoculation treatment adopts multi-stage inoculation treatment. The closer inoculation treatment is to pouring, the better inoculation effect is. It takes a certain amount of time from gestation to pouring, and the longer the time, the more severe the gestation decline. In order to prevent or reduce gestation decline, long-acting inoculants are often used. What are long-acting inoculants?
What is a long-acting inoculant
Long-acting inoculant refers to the inoculant added with barium, strontium and other anti-recession elements. In the process of casting, it is actually the inoculant of barium silicon. The barium element can inhibit the inoculation recession, enhance the number of ferrite, and the ferrosilicate containing barium is not only anti-recession, but also effective in preventing white mouth. Effective inoculant (silicon barium inoculant) is the silicon powder with barium powder by pressing the demand proportion reconcile, by high temperature furnace steelmaking into massive metallurgical materials, is a kind of additive in the process of foundry casting, can promote graphitization, reduce chilling tendency, improve the graphite morphology and distribution of eutectic group Numbers increase, the characteristics of the refining matrix organization, it for a short period of time after inoculation (about 5 to 8 minutes) has a good effect.
