Induction annealing is the process through heating the brass cases in an electrical manner within an electromagnetic field. The lower the resistance of the brass, or the higher the intensity of the magnetic field, the greater the heating effect is. (That is why it is important to sort cases by manufacturer as their conductivity differ by brand). The magnetic field is focused and only the case becomes hot and heating in the area where it is specifically required, i.e. the neck and shoulder area.
Annealing brass is a process of heating the brass workpiece above its recrystallization temperature. This results in softening of the brass and relieves any internal stresses developed in the material due to previous operations (sizing, forming and shooting). Brass annealing is commonly done to soften bullet brass casings to reuse them (Some of our clients report from 28 – 42 reuse cycles of reloading the same brass). Annealing should always be done before resizing. This control the springback and allow repeatable and accurate shoulder bumping and neck sizing. Annealing should be done after every firing / reload to extend case life and enhance consistency by setting the same neck tension every time.
We recommend the following sequence for best results:
Used brass – shoot, clean, anneal, die / press work, etc.
New brass – anneal first and continue with reloading sequence
For more information go to https://quick-anneal.com/our-device-micro-pulsing-shooting-sports-competition-hunting-rifle-case-annealing-induction-annealer-case-sorting/
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