ErgoSil inoculants are a ferrosilicon based inoculants which contain carefully controlled additions of such active elements as calcium (Ca), barium (Ba), strontium (Sr), zirconium (Zr), manganese (Mn) and aluminium (Al).
These inoculants were developed for inoculation of grey iron (GI), ductile (or spheroidical) iron (DI or SGI) and compacted graphite iron (CGI).
Main purpose – to create conditions for carbon growth as graphite instead of carbide (inoculant provides for potential nucleation sites growth).
Depending on purpose ErgoSil inoculants contain active elements in following ranges:
|
Si, % |
Ba, % |
Sr, % |
Zr, % |
Al, % |
Ca, % |
Mn, % |
|
46 – 75 |
0.3 – 11.0 |
0 .6 – 1.0 |
1.0 – 3.0 |
0.5 – 4.5 |
0.5 – 2.5 |
1.9 – 11.0 |
ErgoSil inoculants were developed to suit all known methods of inoculation – sandwich-process, overpour, metal stream inoculation (MSI), inserts for big castings production.
Effect of elements in inoculants
Silicon
Promotes for graphitization, reduce carbides, stabilizes ferrite, improves casting properties.
Aluminium
Neutralizes nitrogen. Good ferrite stabilizer.
Calcium
Improves nodularity in ductile iron. Reduces carbides formation tendency and promotes graphite formation.
Barium
Improves graphitization and increase fading time. Reduce chill.
Strontium
Promotes for graphitization in GI and DI. Reduce chill in grey iron.
Zirconium
Neutralizes dissolved nitrogen, reduces risk of nitrigen pinholes formation, improves of type A graphite formation.
Manganese
Neutralizes sulphur by forming manganese sulphides. Promotes for perlite formation.