Induction brass annealer redux
- Thread starter Gina1
- Start date
It appears that your power supply doesn't provide sufficient power. (the voltage drop is a clear indicator ~11.5 amps * 44 volts ~= 500 watts) You need at least 650 or more.
Yes I did. I also thought is was slow.
the bigger coil insulation is discolored because I initially tested without cooling.I thought as much. The supply is only rated 600w. I thought it would be enough as reading this thread it seemed people were using about 9.5A. I don't know why it is only doing 500w
Last edited:
Mine take about 6 sec to anneal .308Win. Power supply 24VDC, current draw at 15A level. I use single layer coil 10 turns of 3/16" tube in diameter. The inner diameter of coils is 20mm.
Thanks, I am going to try and source a 1000W supply.
I am going to try a single layer coil first as the 1000W supply will take a while to get here.
60 Celsius is plenty good...if you're pushing that, you're probably pushing too hard...
The induction coil uses an oscillating magnetic field to induce internal friction/heat in the metal. Magnetic fields follows the inverse cube law, so small changes in distance from the coil to the metal (brass case) make a huge (to the power of 3) change in coil efficiency. My coil inside diameter is 16mm and still allow me to anneal everything from 5.56 Nato to 300 Weatherby Mag in under 3 seconds. I would try decreasing you inside coil diameter.
What power supply do you use and how much current it draws? Thank you!
Got just about everything fitted. Now need to disassemble and cut holes for fans, induction coil, LCD screen, switches, buttons, wall outlet plug, and redesign the case feeder mount.
Looks very compact and well built enclosure. - is it home built. What is the pot for?
It's an aluminum mini itx computer case. Worked out great so far, but it is a tight fit.
The potentiometer is for the motor that drives the vertical movement.
Wiring and water cooling tubing fitting.
Getting closer.
Alright, trouble shooting time and looking for pointers.
I pulled it all apart to isolate the problem.
The problem: when brass is inserted into the induction coil the ZVS board and the PSU lose power then come back when load is removed from the coil.
To find this is the problem I disconnected everything and now have the PSU plugged right into the ZVS.
Faulty ZVS board?
Thanks.
I pulled it all apart to isolate the problem.
The problem: when brass is inserted into the induction coil the ZVS board and the PSU lose power then come back when load is removed from the coil.
To find this is the problem I disconnected everything and now have the PSU plugged right into the ZVS.
Faulty ZVS board?
Thanks.
48V, 600W AC-DC power supply, turned down to 44v
I have the 20A ACS712 Current sensor but didn't see anything displayed.
Watching the green LED's on the PSU and ZVS, they are green. When brass is inserted into the induction field, there is a loss is power. The PSU and ZVS LED's dim out. When the load is removed from the field, power is restored.
Upgrades & Donations
This Forum's expenses are primarily paid by member contributions. You can upgrade your Forum membership in seconds. Gold and Silver members get unlimited FREE classifieds for one year. Gold members can upload custom avatars.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.