- Joined
- Jun 11, 2006
- Messages
- 8,651
So as you know from my other post I got good results with carbon steels but could not get really anything remotely passable as good on high temp stainless. I tried a few different things like flooding at a max flow rate for a few min once the blade was put in then backing it down, but nothing. Tried flooding the chamber for a few min before hand and nothing. I gave up and just figured my setup could not do it so I was a bit bummed as I spent a good chunk of change on setting this up.
Well fast forward to today and I was looking at a very large stack of blades from Ben (greenburg woods) and noticed my foil might not be wide enough for his really wide blades. I then caught the nitrogen tank in the corner of my eye and muttered a few choice words under my breath. I thought to my self, you know self we never tried just bumping up the flow even further (we first tried 5cfh and that failed with carbon so I tried 7cfh and that worked) over the 7CFH that works on the carbon steel. I wonder said my self to well my self. I bumped it to 10CFH and let if flow for a few min while I prepped a small chunk of AEB-L. This chunk has been tested like 3 times already lol. I ground one side and removed all scale and pits and left a nice coarse 50gr scratch pattern. I left the other side as it was with all the scales from the last test so I had something to compare to. I open the door and slip it into the blade holder and close the door. I start the timer for 12min, I figure 2 min heat and 10 min soak. There I am pacing back and forth in front of the oven staring at it.
The timer goes off and I put on the gloves and open the door and snag the bit of stainless out and put it in the quench plates. I give it a min and raise the plate and damn it i said, bad scale. But wait what about the other side. I flip it over and I am shocked to be greeted by a nice ground dark steel. not a flake of scale or pit to be found. Oh man I was so excited I could not contain my self. Gave it a quick wire brush and I'm really impressed. here are the pictures of the results. i got some before brushing and after brushing and of both sides to show you what kind of scale i was getting before.
Bad side.
Good Side
After brushing
Bad Side
Good Side
As you can see the results speak for them self. The good side has some pitting on one side but that was from a previous test, I did not clean up the entire surface with the grinder as I just did it quick and i was holding that end. Man I'm pumped, used more gas then i would like but if each heat treat took 1/2hr then that's 40 blades per bottle or 80 15min heat treats. Its not as cheep as i was hoping but its still more efficient then foil for me and i can source it local. thanks guys for all the help with this prject.
Well fast forward to today and I was looking at a very large stack of blades from Ben (greenburg woods) and noticed my foil might not be wide enough for his really wide blades. I then caught the nitrogen tank in the corner of my eye and muttered a few choice words under my breath. I thought to my self, you know self we never tried just bumping up the flow even further (we first tried 5cfh and that failed with carbon so I tried 7cfh and that worked) over the 7CFH that works on the carbon steel. I wonder said my self to well my self. I bumped it to 10CFH and let if flow for a few min while I prepped a small chunk of AEB-L. This chunk has been tested like 3 times already lol. I ground one side and removed all scale and pits and left a nice coarse 50gr scratch pattern. I left the other side as it was with all the scales from the last test so I had something to compare to. I open the door and slip it into the blade holder and close the door. I start the timer for 12min, I figure 2 min heat and 10 min soak. There I am pacing back and forth in front of the oven staring at it.
The timer goes off and I put on the gloves and open the door and snag the bit of stainless out and put it in the quench plates. I give it a min and raise the plate and damn it i said, bad scale. But wait what about the other side. I flip it over and I am shocked to be greeted by a nice ground dark steel. not a flake of scale or pit to be found. Oh man I was so excited I could not contain my self. Gave it a quick wire brush and I'm really impressed. here are the pictures of the results. i got some before brushing and after brushing and of both sides to show you what kind of scale i was getting before.
Bad side.
Good Side
After brushing
Bad Side
Good Side
As you can see the results speak for them self. The good side has some pitting on one side but that was from a previous test, I did not clean up the entire surface with the grinder as I just did it quick and i was holding that end. Man I'm pumped, used more gas then i would like but if each heat treat took 1/2hr then that's 40 blades per bottle or 80 15min heat treats. Its not as cheep as i was hoping but its still more efficient then foil for me and i can source it local. thanks guys for all the help with this prject.
