C, Si: C can promote graphitization and reduce the tendency of white mouth, but a high amount of ω (C) will make the CE too high and easily cause graphite to float, generally controlled at 3.7%~3.9%. Si can strengthen graphitization ability and eliminate cementite. When Si is added as an inoculant, it can greatly reduce the supercooling ability of molten iron.In order to improve the inoculation effect, the amount of ω (Si) in the original molten iron was reduced from 1.3% to 1.5% to 0.8% to 1.2%, and the amount of ω (final Si) was controlled at 2.60% to 3.00%.
Mn: During the crystallization process, Mn increases the tendency of cast iron to overcool and promotes the formation of carbides (FeMn) 3C. In the eutectoid transformation process, Mn reduces the eutectoid transformation temperature, stabilizes and refines pearlite. Mn does not have much influence on the spheroidization rate. Due to the influence of raw materials, generally control ω(Mn)<0.30%.
P: When ω(P)<0.05%, it is solid-soluble in Fe, and it is difficult to form a phosphorus eutectic, which has little effect on the spheroidization rate of ductile iron.
S: S is a despheroidizing element. S consumes Mg and RE in the spheroidizing agent during the spheroidizing reaction, hindering graphitization and reducing the spheroidizing rate. Sulfide slag will also return to sulfur before the molten iron solidifies, again consuming spheroidizing elements, accelerating the decline of spheroidization, and further affecting the spheroidizing rate. In order to achieve a high spheroidization rate, the amount of ω(S) in the raw iron should be reduced to less than 0.02%.
Incredible Metacast is a professional casting company that focuses on Construction, Machinery, Automobile, Hardware, Pipeline and many other industries.
We provide top quality products with the best service based on our complete production chain including our own mold design, advanced production techniques, and full management of the supply chain. Incredible Metacast has one factories located in Rajkot, India’s Gujarat province.
We use “shell molding”, which is a new technique that has been developed in recent years. This new technique has simplified production procedures and reduced air pollution compared with traditional sand casting and investment casting. Shell making and core making are faster to ensure production in enormous quantities. The dimensions and surface finishing are satisfactory for all kinds of industrial requirements. Besides supplying our own formwork & scaffolding systems, our casting products also supply OEM services in various industries.
