Meehanite is a trademarked class of high-quality cast irons known for their superior strength, wear resistance, and uniform structure.
These irons are produced under strictly controlled conditions, and a key feature of their manufacture is inoculation using calcium silicate.
Inoculation with calcium silicate helps:
- Improve graphite morphology
- Reduce chilling tendency
- Achieve uniform mechanical properties across the casting
Other options:
- Magnesium is typically used in ductile (nodular) iron to form spheroidal graphite.
- Manganese is added for deoxidation and strength but not for Meehanite-specific inoculation.
- Ferro silicon is commonly used in regular gray iron, but Meehanite uses a refined calcium silicate process for better control.
Thus, calcium silicate is the specific agent used in Meehanite process.