- Thread starter turbospud
- Start date
use a NiFe electrode (nickel iron type). Its best to keep the heat as low as possible (the rods will run on low amps). Use very short runs and allow to cool before putting another one in. Peening the weld can help (tap it with a small ball pein hammer, not too hard and dont hit the cast iron). Should be quite straightforward.
engybenjy
gettin' better all time.......
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- 246
Nice! Just the info I was after. 2 quick questions though:
1, How well would this work if I used 'normal' flux-cored wire??
2, If using the above wire is a no-no, Would any of our more professional welders sell me a small roll of the NickelIron wire?
TIA, Ben
1, How well would this work if I used 'normal' flux-cored wire??
2, If using the above wire is a no-no, Would any of our more professional welders sell me a small roll of the NickelIron wire?
TIA, Ben
- Messages
- 6,339
Will be using MIG for this,I dont have access to TIGI'll have to keep searching.........
Unless anyone has any other suggestions?
Cheers, ben
Stick.......will be the cheepest
shenion
Tool Pack Rat
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- Location
- Stone Mountain, GA USA
Options:
Arc welding with Ni rods for cast iron
Gas braze
TIG with Ni rod
TIG brazing
Cheapest would be arc welding. For £39 pick up the cheap buzz box for a few £ pick up some Nickel rods. Will be cheaper then buying a roll of Ni wire and gas. It will also give you options as there lots of specialty rods. I find it also is better on thick metal.
The next best from a cost standpoint is gas brazing. Pick up some bronze flux rods and a butane or MAPP gas torch. Will be difficult as they have barely enough heat. I had a MAPP/Oxy setup that I used for years.
Of course, TIG is the best but is also the largest expense.
Arc welding with Ni rods for cast iron
Gas braze
TIG with Ni rod
TIG brazing
Cheapest would be arc welding. For £39 pick up the cheap buzz box for a few £ pick up some Nickel rods. Will be cheaper then buying a roll of Ni wire and gas. It will also give you options as there lots of specialty rods. I find it also is better on thick metal.
The next best from a cost standpoint is gas brazing. Pick up some bronze flux rods and a butane or MAPP gas torch. Will be difficult as they have barely enough heat. I had a MAPP/Oxy setup that I used for years.
Of course, TIG is the best but is also the largest expense.
Hello there are other options Eutectic Castolin do a NiFe mig wire called DO23* which is worth its worth in gold it will weld any grade of cast iron, can be welded without peening if the joint is not to restrained and pre-heat is between 100 and 150 deg c. It will also weld mild steel to cast and is one of the best mig wires for ductility out there. You could weld 316 to cast with NicrFe-3 stick electrodes (Nimrod 182KS) by Metrode welding cosumables but you must pre-heat to 150-200 deg c back fill all weld craters and a light peen starting at tha crater end first with a max weld length of 50mm.
