Magnetic Induction annealing
- Thread starter Obtunded
- Start date
Many plants have switched to it. Works well.
Even the plant I visited in China was using it:
View My Video
Even the plant I visited in China was using it:
View My Video
cdnredneck_t3
Regular
I take it you mean they would heat up a piece of steal with the induction heater to a specified temp and then insert the brass for a specified amount of time. I have not tried this but I do have access to a bearing induction heater at work and it only takes about 5 minutes to heat up a bearing to 205 F. It is a fairly good one that has numerous settings and one setting will hold a specified temp. I could drill and chamfer a few holes in some square bare stock heat it up and stick some bras in to see how good it works. Give me some specs for how much heat is needed and a time to be exposed for a proper anneal. I can take some picks and do a little story up for the thread. Unless the temp is too high that our heater cannot do it.
BattleRife
CGN Ultra frequent flyer
- Location
- of No Fixed Address
A couple of years ago I was throwing around the idea of whipping up a better annealing system, and obtained a quote for a radio frequency power supply suitable for induction annealing brass. Working from memory, but I probably set the specification at 400C on a 5 second cycle time, or thereabouts. Knowing what I know now, 500C would be better, 600 wouldn't hurt.
The quote came out to $3000 USD. That was without an induction coil, from the company that boasted they did all their manufacturing in Asia (design in the US) to keep costs to a minimum.
I passed.
The quote came out to $3000 USD. That was without an induction coil, from the company that boasted they did all their manufacturing in Asia (design in the US) to keep costs to a minimum.
I passed.
PerversPépère
CGN Ultra frequent flyer
- Location
- Shawinigan (Quebec)
It works by inducing Foucault currents in the metal, whether it is magnetic or not.
Too bad the coils and electronic generator cost so much, I was thinking about high frequency induction for a small case neck annealing setup.
PP.
This is what I was talking about
The induction units can be had for about $500. This begs to have someone smarter than me develop a platform that delivers induction to cases in sequence and for a consistent period of time. The fact that these flash red is a bit concerning to me, but by his accounts, the cases perform perfectly.
The induction units can be had for about $500. This begs to have someone smarter than me develop a platform that delivers induction to cases in sequence and for a consistent period of time. The fact that these flash red is a bit concerning to me, but by his accounts, the cases perform perfectly.
- Location
- Edmonton, AB
I used to do something similar, but on a larger scale.
When I was 18, I was working in a pipe manufacturing shop, and was put on the swaging press for a while. I got to flare & compress pipe ends so that they could be threaded. After swaging, they had to be stress relieved, and it was done by sticking the ends into a big induction magnet.
One thing I do suggest: Don't wear your favorite watch around a unit like that. The magnet will give it a heart attack. At least, that's what happened to my Bulova that I wore to work only once (forgot to swap out to my junker Timex before I left home) After about an hour, my watch was 7 hours ahead!
When I was 18, I was working in a pipe manufacturing shop, and was put on the swaging press for a while. I got to flare & compress pipe ends so that they could be threaded. After swaging, they had to be stress relieved, and it was done by sticking the ends into a big induction magnet.
One thing I do suggest: Don't wear your favorite watch around a unit like that. The magnet will give it a heart attack. At least, that's what happened to my Bulova that I wore to work only once (forgot to swap out to my junker Timex before I left home) After about an hour, my watch was 7 hours ahead!
