Welding GJV SiMo Cast iron to 1.4541 stainless steel

Date 10-16-2012 15:00

Hi all!
Do you think it would be possible to weld a GJV SiMo cast iron to 1.4541 stainless steel using arc welding?

GJV SiMo is an iron-carbon-silicon-cast material in which the discharged graphite is mainly present in vermicular form (Compacted Graphite Iron). The micro-structure can develop ferritically, and mainly pearlitically.

I am now considering brazing technology to weld them, but I would like to know if it would be possible to do it using conventional GMAW. If so, I am a little bit worried by the gases composition inside the component. Do you think they could limit the filler metal used fo welding.

Welds are going to be subjected to operation temperature of 600 º Celsius and have to support vibrations and 6 bar of pressure.

Any info is welcome.

Many thanks for your assistance.

Daniel

By Tommyjoking (****)

Date 10-17-2012 00:06

Daniel just a thought....you might want to repost this in the technical section...that is where the thinking caps get worn out. Good luck with it.

By G.S.Crisi (****)

Date 10-17-2012 00:57

Aren't those ISO nomenclature? If so, do you know the approximate ASTM equivalent or at least their chemical composition? You say "carbon - silicon (I'll add molybdenum) cast iron". That's not sufficient, the percentage should be known.
You see, the majority of us are much more familiar with American standards than with foreign ones.
Giovanni S. Crisi
Sao Paulo - Brazil

By Daniel

Date 10-17-2012 08:03

Dear all, thank you for your quick reply!

I am sorry. I write you from Spain and I am not so familiarized with ASTM standards.

GJV SiMo has a % of 4,5 of silicon and 0,6 Molybdenum.

1.4541 is a X6CrNiTi18-10 stainless steel. I think it is an ASTM A312.

Hope this info could be useful.

Many thanks again.

Daniel