Differences Between gg and ggg castings

[aerecek]

Hi! everybody.

Our customer bring a casting part, and he is saying that the part is ggg casting but we have some doubts. Is there any way or how can I distinguish the differences between a gg casting part and ggg casting part?

Thanks.

 

[Goahead]

In the Internet page of subcontracting suppliers

http://www.sippo.ch/files/catalogues/hannover_05.pdf

a participant firm announces its production program:

"Leiarmach JSC is specialized in casting of grey cast iron (GG) and ductile cast iron (GGG) and manufacturing of wooden foundry patterns [...]."

Hoping this helps,

http://www.welding-advisers.com/

 

[arunmrao]

If the distinction is between a grey iron(GG) and a nodular iron(GGG),use a ring test to identify. A grey iron will not produce a ringing sound when struck,but a nodular iron will. Hope this helps.

" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke

 

[Tmoose]

I'd drill a shallow 3/16 diameter hole in a non-critical area of a few sample parts. Within a pretty broad range of alloys drilling grey cast iron makes dust, and drilling ductile iron makes real chips.

 

[Goahead]

From the following table

http://www.grantadesign.com/resources/materials/designations/ferrous.generalcastiron.htm

one can see that different grades have the above definitions


Regards,

http://www.welding-advisers.com/