No alternative to parks 50?

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Troop said:
You can't compare the hardening speed of O-1 to 1095. 1095 is the paramount bitch of oil hardening steels; O-1 will even air harden to the point where you would have one heck of a time to drill into it with cobalt bits. (Carbide bits will work, of course.)
I know you're just making a valid point. Something to the effect of "why use 1095, when O-1 will harden up great with pretty much any oil", right?
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That "air hardening" is pearlite precipitation from taking too long to cool. Read up on metallurgy and look at your TTT charts. The root of the problem (and what quenching oils are designed to do) is bringing steel from it's Austenizing temperature through the Pearlite "nose" to MF (Martensite Formation) quickly enough that you get close to 100 percent martensite and no pearlite.

That is the proof of whether your oil is appropriate. If you have no retained austentite, no pearlite, and 100 percent martensite your quench medium is spot on. That is the basic science. That combined with grain size examination will tell you if your process is spot on or not. Granted, that requires actual metallurgical knowledge which certain people on this thread will vigorously oppose, but if they actually bothered to learn might benefit them.

Voodoo and ignorance are more entertaining than facts

-Page
 
Quack!

rubberDuck.jpg



OH!
Rubber Ducky
Your the one
You make bath time
Lots of fun!
Rubber Ducky
I'm awfully fond of you! (bobobodeo)

Rubber Ducky
Joy of joy
When i squeeze you you make noise
Rubber Ducky
You're my very best friend its true

Every Day
When I make my way to the tubby
I find a little fella who's
Cute and yella
And chubby
Rubba dub dubby!

Rubber Ducky
Your so fine
And im lucky that your mine
Rubber ducky im awfully fond of you

ooh....
Every Day
When I make my way to the tubby
I find a little fella whos
Cute and yella
And chubby
Rubba dub dubby!

Rubber ducky your so fine
And im lucky that your mine
Rubber ducky im awfully fond of
Rubber ducky im awfully foooond
Of you!
 
crex said:
Kelsil
Might depend on your liquid diet........geez another variable in the mix!
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Howdy crex, yeah, a liquid diet of a six pack of corona or miller draft while building your fire should do it. This surely is just a backyard way but , I think that it is the most economical, yet enjoyable and reliable alternative way to heat treat small 1095 blades. :p But, since timing is everything in this trade, looks like soaking time for those different sizes of blades is a very important matter for success. You have to know when to drink your last bottle. You have to know when to get ready with the "hose". And you have to know the precise time to fire or shoot this naturally warmed up solution. It would take about 15 minutes for the oven to reach 475F so you could cook(grill) and eat your solid diet of steak before baking your blade(s) for 2 hrs. :)I would appeciate it very much if you could share with me your two cents about this serious curiousity on the relationship of soaking time and that of blade size for this particular steel.:o
 
I can't believe this is still going , can we agree that some people can get excellent results with canola oil with certain steels and variables and others prefer Parks . 11 pages , geez I'm in the category of thinking you can use canola oil and get good results but since I have Houghton K I use it since it was specifically designed for quenching steel and industrial treatment plants companies use it so ...
 
Anyone have any NEW facts, opinions, alternatives, logic, angles, philosophy, science, math, psychology, reasoning, ideas, perspectives, culture, history, art, gossip, hype, politics or religion etc., to throw in on it?
 
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Tai Goo said:
Anyone have any NEW facts, opinions, alternatives, logic, angles, philosophy, science, math, psychology, reasoning, ideas, perspectives, culture, history, art, gossip, hype, politics or religion etc., to throw in on it?
Click to expand...

Surely you jest.


Regards,

Pat
 
The world is flat! Wait.....no it isn't! (just not true round, kind of fat in the middle like most of us).
Gotta take a break and work on one theory at a time.......Kelsil's headed to the woods and I'm bringing the ice and calipers (to measure the blade dimensions you perverts!)
 
sunshadow said:
That "air hardening" is pearlite precipitation from taking too long to cool. Read up on metallurgy and look at your TTT charts. The root of the problem (and what quenching oils are designed to do) is bringing steel from it's Austenizing temperature through the Pearlite "nose" to MF (Martensite Formation) quickly enough that you get close to 100 percent martensite and no pearlite.

That is the proof of whether your oil is appropriate. If you have no retained austentite, no pearlite, and 100 percent martensite your quench medium is spot on. That is the basic science. That combined with grain size examination will tell you if your process is spot on or not. Granted, that requires actual metallurgical knowledge which certain people on this thread will vigorously oppose, but if they actually bothered to learn might benefit them.

Voodoo and ignorance are more entertaining than facts

-Page
Click to expand...

Page, Yes, yes. I know the O-1 "air hardening" comes from pearlite formation. Just trying to make a point about comparing 1095 to O-1;
O.K. bad example.
Thanks for pointing that out, though, for everyone.
I would personally recommend using Park's AAA for everyone using O-1.
- Mitch
 
Last weekend.
Sorry you missed it Pat. Fella from Okatie, SC had some very interesting memorbilia knives from WWII and Korean Conflict.
Good crowd.
Brother Mark even made an apperance on Thursday.
Little Scout has gone the distance and has now officially been forging knives half his life. Did a pretty little 3.5" hunter complete with bone handle and pewter guard in one day. And best of all........I don't have to hold for him anymore!
He's 9 folks.
 
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Time to lock this thread.
All those who posted useful info and were trying to be helpful, thanks. All those just trying to stir things up....that is why I am closing the thread.
 
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