Ductile Iron casting with high Si
Ductile Iron casting with high Si
(OP)
Hello,
I am looking into increasing the Si content of my ductile iron castings. Bring it closer to 3%. However it is known that raising the Si you lower the ductile to brittle transition Temp.
Do you know of any method/ additive that would keep the transition T up and still allow adding more SI?
Thanks,
Herc
I am looking into increasing the Si content of my ductile iron castings. Bring it closer to 3%. However it is known that raising the Si you lower the ductile to brittle transition Temp.
Do you know of any method/ additive that would keep the transition T up and still allow adding more SI?
Thanks,
Herc





RE: Ductile Iron casting with high Si
You can consider Ni addition or alternately try austempering. What is the section thickness of the casting?
RE: Ductile Iron casting with high Si
Casting thickness varies from 1/2" to 2"
Heat treatment is out of the question.
Why did you propose Ni?
Thanks for your reply, Herc
RE: Ductile Iron casting with high Si
RE: Ductile Iron casting with high Si