welding experts
My first post with the new format.
I have an old cast iron hand water pump. It has a broken handle. It's not valuable by any means, just a relic from my childhood. I've tried with my limited knowledge to weld the handle back on (only going to use for personal display on my shop wall )
The place to weld is really poor casting, I've tried brazing, mig, stick, etc.
My question: what do I need to do ? When brazing and /or welding I've pre heated.
Hate to give up and just trash it. 😑
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if only for display, can you drill and pin it then just glue back together???
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By the way, I'm now a caterogry # 3 😀😄
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Have you considered trying JB Weld?
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Thought about that, but not sure if it will be strong enough. my next option unless I get a better answer here.😊
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Cornflk1: 31534351308955/comments/31534345698075
Thought about that, but not sure if it will be strong enough. my next option unless I get a better answer here.😊
It sounded like you were just going to use it as a display piece. The Marine grade has a tensile strength about 5,000 psi. That approaches cast iron's yield strength.
MarineWeld Twin Tube
J-B MarineWeld™ is a specially formulated two part Cold-Weld™ adhesive system that provides strong, lasting repairs for bonding different or similar surfaces, such as metal, composites, fiberglass and others. MarineWeld™ sets in 20 minutes at room temperature.0 -
I’ve had good results making cast iron repairs with Certainium rods. Very pricey, though.
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Get another handle. The ones I had just had a cotter pin to hold them on.
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I have successfully brazed dozen of cast iron water pumps etc over the years . Nothing more than run of the mill brass brazing rods . Just a matter of learning how hot to get it to get the rod to flow well . Cleaning/ grinding down to clean metal seems to be the biggest hurdle . That and a controlled cool down to prevent cracking. Took a bunch of trying to learn how
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If I remember correctly Dad would nickel welding rods for cast.
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Welding cast does call for the Nickel rods and it must be preheated . Never had much luck doing it myself but then again I ain’t from crap with a stick welder !
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it needs to be ground clean and heated then mig or brazing it will take lots of practice. best to find an old exhaust manifold and cut it in half the other half cut into thin strips use the thin pieces as rod . to practice on , but it is a crap shoot just depending on the porosity and the amount of pot in the cast. good luck.
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Interesting I would say brazing but wasn't aware of the skill level required. I have had great success with the two part epoxy rock hard stuff you see golf balls glued to soda bottles in old hardware stores though. Just let it set longer than 24 hours seems it gets harder after more time unlike humans lol
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Cornflk1: 31534351308955/comments/31534363895067
By the way, I'm now a caterogry # 3 😀😄
Well stay out in the ocean , don't need any Hurricanes.
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MY father bought s torch set when I was 14 and taught me to weld using a coat hanger and the torch . Went thru dozens of tanks of gas learning to braze and silver solder . Probably took 5 or 6 years before I really knew what I was doing . No further teaching just experience and what info I could pick up from s few old ( think printed in the 30s and 40’s ) books
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