cast iron welding repair.

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What is the best way to weld wood stove cast iron? welding rod or brazing with brass rod. The ears broke off the part that bolts on the top of the stove. I also have cracks in the belly of the stove. Should I heat it up with a torch before I weld it. Do I have to let it cool very slowly? Will stainless steel rod work?
Reply:Hey Tom,I'll offer a few techniques for you to ponder and I'm sure others will chime in as well. Since you didn't provide much information as to physical dimensions, type of welder you would use, length, width, & thickness of the cracks, there are some easy & simple solutions. First, silver-solder would be the easiest & most economical. The metal has to be clean, a good paste flux, and oxy-acet. will do it very handily. Second, if stick welding, pre-heat is necessary, your best results would be Ni99 rod, a couple inches at a time & then pean the weld, and a gentle post-heat. Third, if using a MIG, a silicone-bronze wire and use the previous stick weld procedures. Anyway, I'm sure others will offer solutions they had good results with. You would be best to provide some physical information to get sound answers from the others here to offer their help......  DennyComplete Welding/Machine/Fab. ShopMobile UnitFinally retired*Moderator*"A man's word is his honor...without honor there is nothing.""Words are like bullets.... Once they leave your muzzle, you cannot get them back."
Reply:Withh the information you provided I say braze it .
Reply:Maybe get a fire going in the stove to provide the pre-heat?MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:How many times are you going to ask this question before you pick an answer to it? This is the third time I have seen it posted. Stainless steel rod will not work, and you are never going to get anyone who knows what they are doing to tell you it will.The difference between art and craft is the quality of the workmanship. I am an artist.
Reply:They make a welding rod that I have used that works well . Jupiter Rod is what it is called / I am not for sure if it is made by hoart or esab? Santini
Reply:Braze it or buy some cast filler and flux.  That is about all you can do with a stove.Or you could use stainless and crack the F**k out of it.
Reply:If you have a stick welder use Ni99, like already described. Solder wouldn't be a wise choice in my opinion. Solder melts at low temps, below 840*F, i'm afraid the fire would melt the solder and it would run out. --Gol'
Reply:it might not weld at all either.    if it is in the belly, or firebox of the stove, sometimes the cast will be "burnt" and won't weld worth beans eitherBill BerryKeith Berry & Son Ltd.machine work, and weldingBear River Vollunteer FD
Reply:TC,From past experience I would suggest the following:First off I would say buy a quality stove. It seems the cheaper ones crack or they were abused with prolonged overheating.Weather steel or cast iron the easiest way to repair the crack to me is use SMAW and a good quality Ni-rod. Or GTAW with same rod but knock flux off first. Ask your welding supplier or go on-line as to the best alloy for your situation.The procedure that worked for me was to drill a .125” hole at each end of the crack, grind the crack both inside and outside to form a double V type joint. Preheat if you want but be sure to weld vertical up if the crack is vertical. Immediately peen every ½” of weld with a back-up dolly if possible of some kind. Weld both sides as described being patient with slow process.Be aware that once the stove has cracking problems it may be doomed to more of the same troubles year after year.Hope this helps.
Reply:Originally Posted by Jolly RogerHow many times are you going to ask this question before you pick an answer to it? This is the third time I have seen it posted. Stainless steel rod will not work, and you are never going to get anyone who knows what they are doing to tell you it will.
Reply:Originally Posted by Thomas ClarkThis is the first time I ever asked about it  So stick your rod where the sun don't shine! It's a kalamezoo stove and it's 3/4 thick. Just thought I'd ask. F! it any way
Reply:I normally just use cast rod pre heat BIG TIME and use a torch.  Ni99 if you have a good stick welder and again per heat.  55 might be a bit easier for you to run but not as good.
Reply:Oh well, I been away also. no big deal.
Reply:Originally Posted by DSWDo you realise the original quote from Jolly Roger is more than 3 years old and he hasn't been active since Dec of 09? I wouldn't get too worked up.
Reply:Your stove is still broken 3 years later?
Reply:I read most of the replies (If I repeat  someone else I apologize) I didn't see where anyone said anything about "GRINDING  a weld prep"  you must get the affected area ground down to clean metal  or your wasting your time.....As mentioned if it has been exposed to the inside fire it might not weld......Get the parent metal ground clean to even have a chance to weld it at all....    Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock