Not sure if this is the right place, but I didn't see a "heat treat" section anywhere, and I figure it's at least related to tooling and tool making.
Here is the deal: I am trying to heat treat some D2 tool steel (this is a knife blade for a small slip joint knife). I am getting OK results, but I think it could be better. I am using some small SS foil envelopes to prevent decarburization. This works pretty well. The problem is, when I open up the oven after the parts have reached temp, the envelope looks like a small, incandescent balloon. That stuff is tough, even when orange hot, and my attempts to simply squash it flat have not been that successful.
My concern is I'm not getting a fast enough quench because the envelope has formed a little insulating bubble. I am using a double fold and crimp on the edge, so should be air tight (apparently it is).
Am I doing something wrong? Am I worried about nothing?
-DMS
Here is the deal: I am trying to heat treat some D2 tool steel (this is a knife blade for a small slip joint knife). I am getting OK results, but I think it could be better. I am using some small SS foil envelopes to prevent decarburization. This works pretty well. The problem is, when I open up the oven after the parts have reached temp, the envelope looks like a small, incandescent balloon. That stuff is tough, even when orange hot, and my attempts to simply squash it flat have not been that successful.
My concern is I'm not getting a fast enough quench because the envelope has formed a little insulating bubble. I am using a double fold and crimp on the edge, so should be air tight (apparently it is).
Am I doing something wrong? Am I worried about nothing?
-DMS