farmrbrnboy
Active Member
I picked up some 1/4"x1" 9260 steel and forged a semi-skinner. I was told to heat treat it the same as 5160. The pyrometer read around 1525 in the rear of the forge, but since the blower is located in the center and somewhat tangent to the tubular forge, it is hotter in the middle than the rear. I brought the blade to non-magnetic and let is soak for around 10 minutes, then quenched in 130 deg canola oil, moving the blade back and forth for a count of 7, then dopped the blade in the quenchant. Around 20 minutes latter, I took the blade out, cleaned the oil and tempered in the oven at 350 for 2 hours x 3. After tempering, I ground down the edge to sharp and tested it....deformed on a 1/4" brass rod. Could I have decarburized the edge because my forge was hotter in the middle than the rear? Is so, should I grind the edge down until I get to martensite? What else could it be?