malcolm Insano Dub Head
812 posts · joined Nov 2004 ·
can you mig weld 4130N chromemoly to steel using the copper wire and argon 54.
question for anyone with a welders ticket
rocknrob Insano Dub Head
844 posts · joined Dec 2003 ·
when in doubt use stainless
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
Dont weld 4130 with mig, it will become brittle and crack where the parent metal meets the weld material dur to the quenching effect of the gas.
Use tig and double deoxidised mild steel wire.
Some people use stainless or moly wire,
but I prefer mild steel, because on a large item(like a chassis) it is hard to slow the cooling.
The weld may crack with hard wire even with preheating.
Smaller items that will fit into an oven may be ok with preheat and slow cooling.
I am sure that there will be someone on here with more experience.
Use tig and double deoxidised mild steel wire.
Some people use stainless or moly wire,
but I prefer mild steel, because on a large item(like a chassis) it is hard to slow the cooling.
The weld may crack with hard wire even with preheating.
Smaller items that will fit into an oven may be ok with preheat and slow cooling.
I am sure that there will be someone on here with more experience.
westi wrote:That's mad Alan.
malcolm Insano Dub Head
812 posts · joined Nov 2004 ·
thanks