Best wuenching oil for 5160? Suggestions...

[jhiggins]

I've stayed out of this argument for years Dan. Some of the slide rule guru's get downright violent over the subject but.....think about what you just said.

Look at the properties of Crisco. When you quench the first time (I know, the triple has been debated also) in solid Crisco, what happens.

You get a controlled heat exchange because of the thermals replacing the solid grease with the warmer more liquid grease.

Quench number two is at about 100 F and the liquid is much thinner and cools the steel more quickly even though it is warmer.

At quench 3 the Crisco is about 135 and is very thin. Heat exchange is some quicker and Sort of finishes the grain out.

I don't have microscopic slides of the grain structure but it does work. The steel develops a fine grain, hardens, holds an edge. What else can you ask for in 5160?

Hey Don, I hear what you are saying, but I thought Crisco was only good for biscuits and blades under 4"... because its shortening...

 

[peter nap]

You have a point Jeff but if you start with a 4" blade and add some baking soda, they will rise and be 10" when you take them out!

 

[J. Neilson]

You guys are too funny. Between this and Sunfishman's avatar, the best laughs of the day.

 

[Dan Gray]

I'm told that olive oil, extra virgin makes the steel harder too, something to do with the extra virgin, combined that with baking soda, it should at least keep your steel from rusting .

 

[Dan Gray]

I haven't razzed you in a long time.....

you're right Chuck, what's with that anyway

 

[Wild Rose]

what's with that anyway

Well do you want the loooong story or the short one....?

 

[Dan Gray]

Well do you want the loooong story or the short one....?

if I like the short one can I get the long story later?

 

[Wild Rose]

Good! Because I'm too tired to give you the long one anyway :yawn:
Basically just too many irons in the fire - websites to do, knives to do, leather to do, and then the bolt holes in the car's carburetor stripped out.... :grumpy:

 

[Dan Gray]

Good! Because I'm too tired to give you the long one anyway :yawn:
Basically just too many irons in the fire - websites to do, knives to do, leather to do, and then the bolt holes in the car's carburetor stripped out.... :grumpy:

I know what you mean ole buddy..
we create our own nightmares don't we
carburetor time for a fuel injection up date

 

[happycat]

Well I took the plunge today and ordered some Texaco type A from Shane Justice (thanks to Ed Fowler for the contact info). Now if I can just wait the week or so for it to get here. I have two blades ready to harden. I have some vegitable oil on hand I may experiment with while I'm waiting.We'll see how they go....
Ed

 

[J. Neilson]

Just wait and go work on your forge shop, Ed. Not like there's a shortage of stuff to do. I think we're curious to see how it works out.