Cooling welded connection

[Egon]

And then there is post heat treatment!

 

[sandman2234]

Never, not for me. I just don't like what flash cooling does to metals.
David from jax

 

[whistlepig]

Pouring cold water on a hot weld will almost guarantee the weld to fail.

 

[Willl]

Pouring cold water on a hot weld will almost guarantee the weld to fail.

Wrong.

 

[whistlepig]

Wrong.

Right.

 

[Willl]

So your saying every hot weld you hit with water fails ?

Are these 'your' welds ?

 

[whistlepig]

So your saying every hot weld you hit with water fails ?

Are these 'your' welds ?

I said "almost". I can't weld at all.

 

[Willl]

I do and have hit many of my new, hot welds with water.

None have failed and no parent material near the weld has failed.

Were building 'farm implements' here.

 

[whistlepig]

I do and have hit many of my new, hot welds with water.

None have failed and no parent material near the weld has failed.

Were building 'farm implements' here.

You have been lucky.

 

[JB4310]

I don't think it's a great idea to quench a red hot weld/steel with cold water. I don't know the facts, but stands to reason that going from opposite ends of the temp spectrum like that would cause great stress to the material, especially if it's for a critical application.

If I need to speed up the handling time, I'll blow compressed air over it, or if outside use a hand held leaf blower, that moves alot of air around the work area.

JB.