Weld iron casting, spot heat to prevent cracks

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Some areas of castings will crack if you just start welding it without paying attention to expansion and contraction.1: Park bench end casting2: This is area of concern, area that has small  openings. Expansion and contraction from welding without pre/post heat would probably give you that dreaded TINK sound soon after welding!3: Areas I heated with #5 OA welding tip (paint burnt off and rusty looking)4: Welded the rest w/o added heating5: FillerPeter Attached Images
Reply:Just looked at your cylinder head and valve repair.  Top notch same as this one.  Thanks for posting.GeezerPower Mig 255C185 TIGBlue 175 MIGRanger 8 Kohler 20HP1974 5K Lincoln/Wisconsin Powered (Cherry)Victor/Harris O/AK 487 Spool Gun
Reply:Originally Posted by geezerJust looked at your cylinder head and valve repair.  Top notch same as this one.  Thanks for posting.
Reply:castweld , what kind of filler and tungsten would you recomend to weld broken teeth back on cast iron gears? more specifically , to build up material on said gears so i can cut teeth back on them with gear hobbs? maybe i should start another post,anyway, cool fix keep the posts coming , i need all the help i can get with cast!!
Reply:Originally Posted by curb guycastweld , what kind of filler and tungsten would you recomend to weld broken teeth back on cast iron gears? more specifically , to build up material on said gears so i can cut teeth back on them with gear hobbs? maybe i should start another post,anyway, cool fix keep the posts coming , i need all the help i can get with cast!!
Reply:why not braze weld? seems like its the best and cheepest way to do a park benchOwner - Certified Welding & Fabrication / 22yrs in businessSteamboat Springs, Co(970) 879-5491AWS structural shopHMI 70t iron worker2 field trucks specailizing in structural steel, aluminum and stainless steel
Reply:Originally Posted by IH 392why not braze weld? seems like its the best and cheepest way to do a park bench
Reply:Originally Posted by castweldHere is the story There is a old homeless German man that comes by my shop every so often with small welding jobs. He straps whatever he needs welded on his bicycle. I have seen him riding his bike in the next town over picking up cans and junk. He is in good physical health for his age- probably 70+. Now, your answer. To braze I would have to bevel and torch weld which would take longer. I TIGged because with high amperage the weld penetrated deeply which in most areas made it through welded without having to bevel. The last part of the story- He came to get this and asked "how much". I told him $3. He handed me a $5 and told me to keep the change.Time is reason for doing this way. My minimum is usually $30.Peter
Reply:fair enough...now I understand "why" you chose gtawOwner - Certified Welding & Fabrication / 22yrs in businessSteamboat Springs, Co(970) 879-5491AWS structural shopHMI 70t iron worker2 field trucks specailizing in structural steel, aluminum and stainless steel
Reply:Originally Posted by Sandy That's funny. I like the guy already. In his world $5.00 was a lot of money and he came to it by a lot of hard effort. Not much you can buy for $3.00 any more tho.You did a good deed, he's happy, life doesn't get any better than that.
Reply:cast, i wonder what bed sheets had to do with anything? lol
Reply:Originally Posted by Scott Youngcast, i wonder what bed sheets had to do with anything? lol
Reply:Thanks for the thread. I know it's hard to give away your time and knowledge for 3 bucks. But you are REALLY paying it forward, huh? Karma points for sure, bro!Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain