Another Myth BUSTED!!

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So you say steel to cast iron cant be done with 7018..Wrong again my friends.. When the gauntlet has been thrown..I pick it up and throw it back..Heres the subjects..Cast Iron Plate..Steel bar..3/4" X 4" X 10" long..7018 Beads..5/32 rod 210 amps..Note..I did not do a complete weld all the way around..I used 1 rod on one side and 1 on the opposite side..Weldment???Off to the next post.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Here it is in mid air..Heres the hammer I used to break it apart..Took 6 good blows before it came apart..Here is the aftermath..Here is how deep the penetration was..Now this was done to Prove a point..Yes it does work..But in all reality...I would not suggest this on something that will see any abuse..But for a shelf..or something of that nature..It will work...So don't automatically state "It cant be done" because if you study the pics..Looks to me like it can be done..And I just did it... ...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Well I could have told you that was gonna happen............ The point is the weld it and not have it fall apart.... there would be no point in making a repair that wouldn't hold.I won't argue that technically it can be done..... I will argue it's place as an option when considering how to weld cast iron to steel.Last edited by lorenzo; 03-01-2007 at 04:06 PM._________________Chris
Reply:Looks good. I'm sure that's why there is Nick55 and Nick99...just for this reason. Looks like 7018 can be used, just the tensile strength is not proven...or unknown. Have any Nick55 or 99 sticks laying around?  I'd like to see if it would take 6 whacks with the hammer and possibly do the same. :wonder:John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:Yeah What MicroZone said ..... Seems another Gauntlet has been tossed at your feet .... Hey Zap! DO us all a favor and reweld it with nickel rod at ninety degrees to the other weld you broke off.It would be a better test if the same exact material was used and since it happens to be in your shop ............ How about it?I knew you could weld it together but would love to see if there is a difference with the other rod, in penetration, holding power, less crystallization of the cast, etc. You know the kind of stuff nosey welders want to know.Washman
Reply:Next week I have to go the the weld shop and re-stock some consumables..I'll get some Nickle 99 and give it another go'round..I'm interested myself... But now I have to go retreve the pieces from the dumpster..  (Better duck when the gauntlet comes flyin' back..)...zap!Last edited by zapster; 03-01-2007 at 04:51 PM.I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Fling away my friend...... actually I think I have the stuff to try this at the shop.... I know I have the nirod.... I know I have everything. I'll see if I can give it go tomorrow._________________Chris
Reply:Originally Posted by lorenzoFling away my friend...... actually I think I have the stuff to try this at the shop.... I know I have the nirod.... I know I have everything. I'll see if I can give it go tomorrow.
Reply:I'm wondering if this experiment took place during happy hour.  For what you accomplished you could have used JB Weld to get the same result.
Reply:Originally Posted by mcgirrtI'm wondering if this experiment took place during happy hour.  For what you accomplished you could have used JB Weld to get the same result.
Reply:Yep, I'd like to see it done with NICK 55 or 99...curious as to what the difference, if any, might be.John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:What I want to know is if Zap's been using the same dime with all his pic's, and what else can he do with a dime? Gad, I love 7018.ThermalArc 185MillerMatic 180 w/ AutosetVictor Cutskill Oxy/AcetyleneThermal Dynamics Cutmaster 38and spite!
Reply:Originally Posted by DirtyLittleSecretWhat I want to know is if Zap's been using the same dime with all his pic's, and what else can he do with a dime? Gad, I love 7018.
Reply:Zap, that was quick!  Thanks for the demonstration, nice weld and great photos.You were right, it was not a "disaster" as I had said, just a "simple failure".As you clearly show, the cast material fails easily in the HAZ due to the hard brittle structure created by the heating cycle of welding. I never said ZAP could not lay a beautiful 7018 bead on cast iron.  You continue to clearly show, with great photos, that you can make an good looking weld on just about anything.I attempted to provide information as to why ZAP should not recommend to others that they should use 7018 on cast iron.This particular cast material did not instantly crack after welding, but some types of cast iron will, and high carbon steels are also very prone to this.  Additionally, this type of underbead cold crack is exasperated by any hydrogen contamination, such as from the contaminated "low hydrogen" 7018that most of general welding public do not properly store.  Thanks again,pulse....pulse....pulse....
Reply:No problem at all pulser.. Sorry if i got alittle "steamed" last night...I'm married..... ...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Originally Posted by mcgirrtI'm wondering if this experiment took place during happy hour.  For what you accomplished you could have used JB Weld to get the same result.
Reply:Thanks Zap, I have had the same expierence.  Even with a MIG, it does the same thing except the weld looks worse because the cast gets into the MIG weld.  It welded, but really didn't hold.  I don't think you will be able to break it with Ni rod.Nice to see people get fired up about this stuff.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Originally Posted by David RThanks Zap, I have had the same expierence.  Even with a MIG, it does the same thing except the weld looks worse because the cast gets into the MIG weld.  It welded, but really didn't hold.  I don't think you will be able to break it with Ni rod.Nice to see people get fired up about this stuff.David
Reply:This cast and steel thing must come up quite often.  Do you have customers that request this sort of stuff?  Just curious.Various GrindersVictor Journeyman torch200cf Acet. 250cf oxygenLincoln 175 plus/alpha2 gunLincoln v205t tigLincoln 350mpEsab 650 plasmaWhen you can get up in the morning, Its a good day.Live each day like its your last.
Reply:i wonder what results would have been like if it were brazed instead of welded?
Reply:Originally Posted by DoolittleThis cast and steel thing must come up quite often.  Do you have customers that request this sort of stuff?  Just curious.
Reply:I can attest to 7018 being a successful option for welding cast iron to steel.I've made several steel sign posts and welded them to cast iron brake drums off of semi tractors using 7018. The key is to use 'fresh' rods or rods that have been baked in the oven for 3 hours, weld a short amount and let it cool SLOWLY. Done correctly it take take a decent amount of abuse.Freelance Fabber91 GMC 3500 Portable welding truckLincoln Weldanpower 8000 gas welderMiller CST 250 Smaw/Gtaw inverterMillermatic 210 gmaw line welderHyperterm plasma