Have been seeing more & more ductile pieces in need of repair, in the past I would just oversize bore & use a hardend bushing,is there any machineable wire out there that will not turn glassy? What are ya'll using for a higher tinsile wire that you can still machine I am using lincoln s-6 is what bortec recommended seems kind of soft, just woundering.
By ductile iron you are meaning ductile cast or SG iron? If so there is no cheap wire to use. When the job justifies it I use a 60/40 nickel/copper wire.Its expensive. Better is a 100% nickel wire,more expensive again. These are the only ones I know of that don't give you a glass hard fusion zone with cracks in it. For welding steel bores the S6 wire is the best in my opinion. Its a mild steel wire but if welding on to alloy steels it will leach out of the parent metal and give a tough weld deposit.
Thanks Ray, it seems like if you have to make more than a couple of passes it's not pulling the carbon out, on some boom piviots & bosses we end up gouging them off & replacing ,thanks
What machines have the malleable castings on the booms. I have come across many with cast steel which I treat mostly as ordinary steel. I see a lot of Hitachi bucket links and levers in malleable cast as well as stuff like back hoe swing castings. A lot of it you can't tell the difference unless you drill it,machine it or weld on it.
On the booms & bosses they were all steel I was saying when you weld out the egged or worn spot with multiple passes it seems to mushroom out like it's soft.The latest ductile was a suspension part on a caterpillar 75c farm tractor we bored with a step and put in 660 bronze. thanks