on my old jinma 254, I welded the steering knuckle 2 times, the first one was with a mig at 180A a it lasted 2 days... the second time was with 7018 (not intended for cast iron!) rod DC+ and I preheated the part in the BBQ for 2 hours, did my weld, and then I burried the part into a bucket full of sand. worked for 6 months...I had ordered a new part but it never gave up.