Question about quenching for Andy

[M4Super90]

I recently heard that the reason a blade might warp during quenching as that while it cools and goes from a non-magnetic state back to magnetic. If you point the knife (or quenching bath) due north during this process it won't ever warp because its not being pulled by the magnetic field as it cools. Have you heard this? Sounds like BS to me, but what do you think?

Phillip

 

[JesseT]

I don't make knives, but I did stay at a Holiday Inn Express last night (is that joke still relevant?). I would expect that the magnetic field of the Earth is far too weak to have any substantial effect on the warping of steel (at least compared to the effect that something like varying the angle at which the blade enters the quench bath would have). Correct me if I'm wrong, steel gurus!

Sent from my A0001 using Tapatalk

 

[Tim the Wizard]

This does not directly answer your question, but it is cool and has to do with the concept of sori (blade curve) as a desired outcome of the quenching process in Japanese swords

http://www.tameshigiri.ca/2014/09/14/putting-the-curve-in-a-katana-via-quenching/

 

[bonafide]

I recently heard that the reason a blade might warp during quenching as that while it cools and goes from a non-magnetic state back to magnetic.

Was it Daniel Casey from the TV show Iron & Fire you heard that from? heh.

 

[Rick Lowe]

Bending or warping in the quench is usually a result of not normalizing a forged blade, slightly uneven grinds or just cause it can. No big problem to deal with by manual manipulation or quench plates. I'd heard that same line 20yrs. ago and never bought into the flawed "science". My quench tank sits due WSW and 98% of the blades come out straight.

 

[swonut]

Now, Justin Wilson once told me that if you sprinkle some cayenne pepper in your canola oil quench it makes it almost impossible to warp a blade. Something about the essential oils. "No warp, I done gar-on-tee."

[video]https://youtu.be/eK4umRMJlrs[/video]

 

[crex]

Think it through.........when you fall out of bed, do you fall north? south? or straight down......doesn't take rocket science to figure this out.
Bunch of "full-mooners" out there!

Apparently there's nothing wrong with warped blades.....people show them to me all the time.

 

[Fiddleback]

I recently heard that the reason a blade might warp during quenching as that while it cools and goes from a non-magnetic state back to magnetic. If you point the knife (or quenching bath) due north during this process it won't ever warp because its not being pulled by the magnetic field as it cools. Have you heard this? Sounds like BS to me, but what do you think?

Phillip

Load of huey IMO. But hey, whatever it takes...

 

[crex]

Now, Justin Wilson once told me that if you sprinkle some cayenne pepper in your canola oil quench it makes it almost impossible to warp a blade. Something about the essential oils. "No warp, I done gar-on-tee."

[video]https://youtu.be/eK4umRMJlrs[/video]

Don't forget the red wine.....