Welding Cast Iron ???

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What is involved in welding cast iron?What rods would you use .....using tig?
Reply:Consider brazing?Sent from my SCH-I545 using TapatalkCRIME SCENES, COURT DATES, FUNERALS, RIDING THROUGH THE CITY WITH A BITCH THAT IS JUST BEAUTIFUL IT'S JUST BUSINESS AS USUAL.
Reply:Originally Posted by rahtreelimbsWhat is involved in welding cast iron?
Reply:Originally Posted by rahtreelimbsWhat is involved in welding cast iron?What rods would you use .....using tig?
Reply:Www.ezweldtigwire.com try it and let us know how it works.Torchmate 2x2 CNC with Flashcut CNC controlsHypertherm Powermax45 Esab ET220i Razorweld 195 MigRazorweld 200ac/dc TigTormach 770, Tormach xstechRazorweld, Vipercut/Vipermig, SSC Foot Pedal Dealer
Reply:312 stainless will get you through. Any tig wire high in nickel is king on cast iron. Alloy w will work very well but is expensive. I have used 309 stainless with good success.
Reply:Originally Posted by rahtreelimbsWhat is involved in welding cast iron?What rods would you use .....using tig?
Reply:Would 308 stainless work?
Reply:No use 312 if you use any stainless fillerTorchmate 2x2 CNC with Flashcut CNC controlsHypertherm Powermax45 Esab ET220i Razorweld 195 MigRazorweld 200ac/dc TigTormach 770, Tormach xstechRazorweld, Vipercut/Vipermig, SSC Foot Pedal Dealer
Reply:So I took a stab at welding this cast iron. I cleaned the area down to shiny metal. Used 3/32 312 stainless filler rod at around 140 amps. Made 5 passes tapping with a hammer in between passes. Pre heated to 475 degrees. When finished I wrapped the unit in an old hoody. Checked 1 1/2 hours later and it was at 194 degrees. .....all looked good.Hopefully I did right here.
Reply:Wish my welds were straighter.....lenses fogged up and lost my way.
Reply:I'd say you did a good job! How'd you like 312?
Reply:Originally Posted by That Guy ThereI'd say you did a good job! How'd you like 312?
Reply:My guess would be that's cast steel and not cast iron.
Reply:Originally Posted by HT2-4956My guess would be that's cast steel and not cast iron.
Reply:You can tell a lot from the color of the sparks. A cast " iron" will be more of a red color than a cast "steel" .
Reply:Search "Spark Testing" and you can find some videos and sites with pictures that will get you familar with it.   Here's a good basic one.   http://www.scrapmetaljunkie.com/241/...sting-metals-2
Reply:Originally Posted by rahtreelimbsSo I took a stab at welding this cast iron. I cleaned the area down to shiny metal. Used 3/32 312 stainless filler rod at around 140 amps. Made 5 passes tapping with a hammer in between passes. Pre heated to 475 degrees. When finished I wrapped the unit in an old hoody. Checked 1 1/2 hours later and it was at 194 degrees. .....all looked good.Hopefully I did right here.
Reply:Looks good man.
Reply:That looks like a hydraulic valve so I would guess it's cast steel as well. Most hyd. fittings are forged too. Peening helps a lot on some applications but over peening defeats the purpose and introduces new stresses. It's best if you can show a picture or give a description of what you want to repair first and then ask how to weld it. Saves a lot of guessing.