Soldering cast iron

[500e]

Have TIG braised some small bits

 

[the snooper]

You've answered your own question, can't get in to clean, solder won't flow into the crack, got to be spotlessly clean

 

[EddyP]

Will normal brazing rods work for cast? I’ve got an umberalla stand I need to fix for my mum, someone’s already had a go at it with a stick welder which worked for a few years but now it’s gone again. I haven’t got any rods for cast but do have a TIG and Oxy/Acetylene so could braze it. Presume normal brazing flux is ok too?

 

[brightspark]

Will normal brazing rods work for cast? I’ve got an umberalla stand I need to fix for my mum, someone’s already had a go at it with a stick welder which worked for a few years but now it’s gone again. I haven’t got any rods for cast but do have a TIG and Oxy/Acetylene so could braze it. Presume normal brazing flux is ok too?

not a problem brazing cast iron with oxyacet just v out the crack plenty of flux best heating a good aeria around it with a blowlamp to dull red then use oxyacet to braze. its best to cool it down slowly so it wont crack

 

[EddyP]

not a problem brazing cast iron with oxyacet just v out the crack plenty of flux best heating a good aeria around it with a blowlamp to dull red then use oxyacet to braze. its best to cool it down slowly so it wont crack

Perfect, thanks.

When you say cool it slowly, just naturally in air ok or does it need more than that, like occasionally hitting with a blow lamp?

 

[brightspark]

Perfect, thanks.

When you say cool it slowly, just naturally in air ok or does it need more than that, like occasionally hitting with a blow lamp?

just let it cool naturally if most of it was heated with a blowtorch

 

[EddyP]

Brill, will give that a try, thanks.

 

[Memmeddu]

Will normal brazing rods work for cast? I’ve got an umberalla stand I need to fix for my mum, someone’s already had a go at it with a stick welder which worked for a few years but now it’s gone again. I haven’t got any rods for cast but do have a TIG and Oxy/Acetylene so could braze it. Presume normal brazing flux is ok too?

Stainless rods should be a good option
309L
312L