Etchant for Ductile iron - Nickel filler Weld
Etchant for Ductile iron - Nickel filler Weld
(OP)
Dear all, what would be a nice etchant to examine a ductile iron weld.?
I use nital for Ductile iron but I would like to etch the Ni filler.
any ideas on that?
Thanks
I use nital for Ductile iron but I would like to etch the Ni filler.
any ideas on that?
Thanks





RE: Etchant for Ductile iron - Nickel filler Weld
Someone out there may know of a compromise etchant, but tThe best advice I can offer is to etch the cast iron first (nital) and then mask the cast iron with scotch tape (yup, the stuff on your desk) before etching with a suitable nickel etchant. Works best if your fusion line has some straightness.
I take it this is for a weld procedure or welder qualification, and the applicable code insists you etch the assembly before visual examination for flaws. This is an instance where the saying 'the law is an a$$' is applicable.
RE: Etchant for Ductile iron - Nickel filler Weld
I will try Nital for Ductile and MArbles for Ni and will update on results.
thanks,
RE: Etchant for Ductile iron - Nickel filler Weld