the influence of inoculation on cast iron

Inoculation refers to that add a small amount of some substance to the liquid metal, then make a physical chemical change, which varies from the substance as the alloy element. The main role of inoculation is to affect the coagulation process of the cast iron, provide sufficient core for graphite, inhibit white mouth, and control the size, morphological and distribution of graphite, reduce the sensitivity of the casting section, increase the number of eutectic changes, and reduce the amount of iron water cold tendency to achieve increased elastic modulus, improve the hardness distribution of thick and thin section, improve the mechanical properties of castings to provide better service for engineering technology.

The influence of inoculation on cast iron.

1.For gray cast iron, inoculation can control the graphite form, obtain fine sheet A-type graphite and pearlite matrix, inhibit carbon-ceramid, promote graphitization, prevent the thin wall and boundary form high and white mouth, improvement sensitivity of the casting section, can minimize the use of scrap steel when smelt iron water with induction electric furnace, on the one hand, it can reduce production costs, on the other hand, it can improve the mechanical properties of the castings to improve the comprehensive quality of the product, and offset the hereditary wait.

2.In the production of ductile iron, the spheroidization treatment is to make the graphite, and the inoculation is to give graphite precipitation, increase the graphite ball, improve teh circularity of the graphite ball, improve the spheroidization rate, and assist the ball. In addition, the globiochemical elements such as magnesium and RE in the production of ductile iron have strong reaction to graphitization, so that the white mouth of iron water after the spherion is increased. By inoculation, it is possible to suppress white mouth, obtain castings of cast carbon-free carbon, and the matrix tissue of cast ferrite or cast pearlers matrix, Even with the same iron solution, the chemical composition can be adjusted by taking rigorous process measures, controlling the production process, standard operation, and use the alloying principle, and controls the opening time of the casting, and the qualified performance is completely different.

Practice has proved that correctly choose to use inoculation can achieve energy saving and lower consumption, sustainable development.

Anyang Huatuo Metallurgy in the raw materials for cast iron production for more than 10 years,owned advanced production and processing equipment, if any requirement please consult us.