Cast iron gear box repair

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I had a customer call me up with a tractor stuck by the river bottom b/c of a gear box.  He said it was cast and i have welded cast but nothing that matteredd much chair legs and such. I just want to verify my methods are correct. Bevel the crack out, pre heat, weld, ping, post heat. My boss has also told me that cast can be welded with a 7018. I have used nickel rods on it before but how does the 7018 work on it?Weldandpower 225Heliarc Rig for itTorchesect ect ectLifes Short WELD NAKEDLooking for a SA200
Reply:Originally Posted by jroyster06I had a customer call me up with a tractor stuck by the river bottom b/c of a gear box.  He said it was cast and i have welded cast but nothing that matteredd much chair legs and such. I just want to verify my methods are correct. Bevel the crack out, pre heat, weld, ping, post heat. My boss has also told me that cast can be welded with a 7018. I have used nickel rods on it before but how does the 7018 work on it?
Reply:Thats the problem. Im workin way too late tom at the shop to make it to the weld shop to pick any up. I may have some laying around at the shopWeldandpower 225Heliarc Rig for itTorchesect ect ectLifes Short WELD NAKEDLooking for a SA200
Reply:It depends, to do the repair right you first need to figure out what kind of cast it is.  The repair procedure will be determined by that.  There are guides online to figuring out what kind of cast material it is.Have we all gone mad?