HAve you ever had steel that just wont harden as well as other batches?

Danbo said:
Get yourself some actual quenching oil. Parks AAA is what you want for oil hardening steels.
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Danbo, I thought Parks 50 was for oil quenching steels and the AAA was the faster quench oil for water quench steels? Do I have it backwards? I've recently gotten some of both, but they didn't send a data sheet with them and I haven't used them yet...

:)

-Darren
 
blgoode said:
Where can you get parks AAA?
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Brian, here's the info from a post by Nick Wheeler:

finally got ahold of this guy at HeatBath (Detroit office)

Dan (313) 895-7215 ext. 191

Dan told me that for the #50 it is $5.55/gallon and AAA is about the same. With the $100 minimum order, it would be most wise to order either 10 gallons of each, or say 15 gal of #50 and 5 gal of AAA. If you buy 1 - 5 gal bucket of eac, it will still be $100. Of course shipping on 4 buckets will be a lot more than 2.

The cruddy thing was that he told me I'd have to fax in 3 credit references to set up an account with them. "What, no credit cards????"

He said they have the software and should be up for credit card orders in a couple days (hopefully). I plan on calling back in a few, as it sounds like a pain to set up an account.
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-Darren
 
Mark Williams said:
OT:

Darren did you get the text file I sent about my forge?
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Hi Mark, sure did, thanks for sending it. I'm up to my eyeballs in work at the moment and am *slowly* working on the next update to those pages...but it may be a few weeks before I get it finished...not enough hours in the days sometimes...

:)

-Darren
 
I had a new smith call me in tears once.Brand new HT oven and he could not get his blades hard enough.I told him to make sure it was hot enough,and to leave a little extra metal to grind off after hardening.Once through the decarb,the real hardened steel shows up.Many don't discover this until the forth or fifth resharpening.
A whole 'nother thread could be devoted to the effect by the temperature of the quench oil on the hardness of the blade,and the difference in the blades as the temperature rises through a batch of blades.(Probably has been several times.) End result - Use the largest quench tank you can afford to build,5 to 10 gal. mimimum. A circilating pump and heater are tops for performance.An old small water heater can be converted fairly easily.
 
Bladsmth, one of the problems in answering questions and solving problems is that we can't see the shop and can't see techniques.Many little details that can make a big difference. ..I had ,a while ago , asked if anyone used a circulating pump but got no response. What do you use for that ?
 
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