Canola oil

C

CagedSuperman

Joined
Dec 14, 2021
Messages
108
So when I first started with making knives I used vegetable oil, I switched to canola. It seems to never flare up when quenching, just sounds like I’m deep frying fries. Shouldn’t you always have a flare up? I noticed too that the temperature doesn’t spike as fast as vegetable oil either.
 
CagedSuperman said:
Shouldn’t you always have a flare up?
Click to expand...
I avoid flare ups... for canola/veggie oil, the flash point is at least 600F, so if there's fire when I pull the blade out of the oil, it's possible it didn't cool enough quick enough to properly harden.
 
CagedSuperman said:
So when I first started with making knives I used vegetable oil, I switched to canola. It seems to never flare up when quenching, just sounds like I’m deep frying fries. Shouldn’t you always have a flare up? I noticed too that the temperature doesn’t spike as fast as vegetable oil either.
Click to expand...
I guess I don’t use the proper terms. I mean when you quench the blade. I usually have some flame. But goes out rather quick. Last three knives though were super hot, oil was at 135 degrees and then quenched. Oil never really got too hot. The 80crv2 had to be way hotter than 1095 to get non magnetic
 
I never get flair up in canola oil, even when I quenched a 2-1/4 lb 8670 axe head in 3 gallons of oil.

What makes you think that you should always have flair up?
 
Have you seen this thread?

Which Quenching Oil is Best for Knives?

I did a big study on different quenching oils (six of them) in addition to water for 9 different steels to see in what conditions the different steels will fully harden. If you have been worried you are using the wrong oil this study is for you. In addition to this fun study, I have made my...
bladeforums.com bladeforums.com
 
if you get it into the oil quick enough and keep it under the oil there should be no oxygen for flames, right? also flames aren't necessary, so no flames sounds good
 
You never want flames. Makes for entertaining TV shows, but it's bad for the oil (besides the obvious). The only time I've gotten flames is when the blade wasn't submerged all the way, as in a red hot tang sticking out above the surface.
 
As said, a flare-up is caused by the oil vaporizing and then igniting by being in contact with hot steel above 600-700°F (300-750°C). If the blade is submerged quickly and stays below the surface until it cools below 600°F/300°C and the tongs did not get red hot sitting in the forge, there will be no flare-up.

Causes of a flare-up:
#1 cause - Pulling the blade out of the oil too soon
Other causes:
Blade too hot
Tongs too hot
Insufficient oil volume
Partial blade submersion
Quenching too slowly


The big flare-ups as the hot blade enters the oil on FIF is not caused by the oil, but by something they float on top of the oil that is very volatile. A barrel of oil that big should not have any flare-up at all. I have never had anyone willing to confirm this. When asked about the oil, most contestants say, "It is some kind of fast quench oil." When asked if they get that kind of flare-up with their fast oil at home, they all say, NO.
 
Bill DeShivs said:
Stacy- you should add this one more reason for flare ups:
TV drama shows.
Click to expand...

Yes

I've seen a lot of flare up flames on Forged in Fire

It's deliberate TV ism

If you read the credits, they had specialized pyro technicians on those episodes.


Don't believe what you see on TV kid.
Video games either.
Figure out the sources of real info.

When they are available go to real hammer ins, in person.
 
You must log in or register to reply here.
Back
Top