Originally Posted by more
What's the problem Cast iron easy repair with brass bronze
you have 2 option
A/heat in oven
part, later weld with brass, use welding blanket and slow cool down 24 hours to room temperature.
b/make missing part with steel
, heat in oven
part and missing part and fill with brass, use welding blanket and slow cool down 24 hours to room temperature.
Not possible repair is only airplane jet engine
rotor blade on cold and hot side, this is forbiden by law and to risky
And you know how and where their housing is corroded how, exactly?
Again, many, maybe even most, things are repairable, but assuming something is or isn't based on no information, or worse on one's own assumptions, is nonsense.
I'm aware of several different methods of repairing cast iron, and am sure there are others of which I'm not aware, but there is no indication that the OP's original complaint about his HE, "One Heat exchange housing has corrosion
to the point of replacement can not repair" is amenable to any of them.
For instance, in your example, how would you repair a perforation of the middle exhaust
tract on the inside of the manifold? Would you split the thing and then weld it back together after you patched the hole?
And there are twice as many such areas on the HE/manifold in question...
Sometimes the cost/benefit ratio of repairing versus replacement in weighted more heavily toward replacement.
Leaving aside the problems asociated with welding/brazing salt-infused metal, which your aluminum
manifold probably wasn't and the OP's cast iron HE tank/manifold probably is...