Induction Case Annealing?

Nov 12, 2009
36
Charleston, SC
#1
I've been working on a project recently to build an automatic case annealer using induction heating instead of propane torches. Thus far I have got a good coil design and I just recently built a timer to automate the process.

I've put together a video showing my induction annealing setup, now with a timer. The timer was easy to build, and cost only about $15. I took the switch off of the inductor and plugged the wires into the timer. Now I hit the button to activate the timer, it turns the coil on, after a set amount of time it goes off. Simple as that.
The schematic for the timer is in the video.

http://www.youtube.com/watch?v=a_ohUknmaq4
 
Nov 12, 2009
36
Charleston, SC
#3
I've put together a slideshow/video with tempilaq on the cases. It shows how hot the cases get, and how localized the heat is. With the timer on the induction heater all of the cases get to the same heat.

http://www.youtube.com/watch?v=Uasv-Pyxu4g

Other than that...

The automatic induction annealer is coming along well. I've ordered many parts for it and should begin construction within a week. I decided to go to a flashed chip for controlling it, that should help keep the cost down as I won't need a whole bunch of expensive electronics for it now, just the one chip. As always, I keep the updates coming on my blog, http://www.rifles-shooting-reloading.com/Reloading-blog.html.
 
Nov 12, 2009
36
Charleston, SC
#7
Great news on the induction annealing project!

I've been talking with an electrical engineer and he has come up with an induction heater that should work well for me at 1/2 of the price I was expecting to pay for the mini-ductor(what I used in the videos). This will definitely help to keep the cost of the finished machine (I.C.A. 2000) down.

More updates on my blog at http://www.rifles-shooting-reloading.com/Reloading-blog.html