Annealing Questions

[divingin]

As-in purging? I have pressure coming out, but It is NOT propane. I unscrewed everything and visually check, then blew out with compressed air. I have opened and ran for over 10 minutes, and I am still not getting the propane smell. Could there be that much dead air in each of those tubes???

Well the hole in the torch tip is pretty damn small. When running there isn't all that much flow. Depending on your hose, there could be a significant amount of air in there, but I've never really noticed much of a start up delay. To put it in real perspective, open everything up, allow to pressurize, then shut off everything except the torch valve, and see how long it takes to bleed down. On my setup it's a surprisingly long time.

On the general annealing thing, check out https://www.ampannealing.com/articles/ and look at the "Annealing under the Microscope" series. Though geared towards AMP's products, there is a lot of good info in there.

 

[Straightshooter1]

Well the hole in the torch tip is pretty damn small. When running there isn't all that much flow. Depending on your hose, there could be a significant amount of air in there, but I've never really noticed much of a start up delay. To put it in real perspective, open everything up, allow to pressurize, then shut off everything except the torch valve, and see how long it takes to bleed down. On my setup it's a surprisingly long time.

On the general annealing thing, check out https://www.ampannealing.com/articles/ and look at the "Annealing under the Microscope" series. Though geared towards AMP's products, there is a lot of good info in there.

Yes, that Annealing Under The Microscope series is a really good read. I only wish they had collected data on flame annealing instead of salt bath annealing for a comparison.