I am building a DC solenoid valve and have settled on simple pure iron per ASTM 848 for the magnetic parts. All parts are cylindrical and turned on a lathe. Gaps will be held to a close tolerance. My question is on heat treating for optimal properties.
We are worried about distortions...
For me the hard part would be working out the relationship of force vs distance. If you solve that, then it is relatively easy to integrate to get energy and equate to kinetic energy in the ball... do not forget that the ball is rotating and energy goes into making it rotate. Another possibly...
