From a application view, there is a "drag" force as a result of the cooeficients of friction between the magnet and the load. A rule of thumb is the latteral force is about 25% of the vertical force. This can vary considerably depending on the contact surface conditions, i.e. smooth, rough...
What is the expanded metal thickness? Is each screen free from the one below it i.e. not tangled in any way. Is there an oil film between screens. Are subsequent screen openings in line with the ones above and below or are they randomly positioned? Do the screens lay flat? Depending on the...
You would also have to be concerned about people who have medical devices such as pace makers (etc), coming into range of the magnetic field. There could be some deadly consequences.
I am trying to locate the emmisivity of manganese steel that is used as a wear surface on a drum. I do not find it listed in any of the published charts. Thanks. Mac2
Several years ago a paper was presented at the IEEE magnetic society meeting that provided a closed form solution for calculating the force between two permanent magnets. The variables were the x,y,z dimension of each magnet, the off-set and gap if any and the direction of magnetization. The...
Once the solenoid has reached the point where it requires twice the voltage to achieve the force you require, try reversing the 30VDC in the coil and see what happens.
Todd,
If you wish to persue the tapered pole approach, there is a good section in the book "Electromagnets" by D.J.Kroon that deals with (Stray flux and flux density). It covers both low and high fields (i.e. saturation). While principally dealing with electromagnets, the section dealing with...
In this case, the AC Motor will be located in the magnetostatic field produced by a large suspended electromagnet. The magnet is used to separate "tramp iron" from the flow of ore that is being "cleaned up" before it goes to a crusher. Things like digger teeth and re-bar...
Is there information available that defines the limit of an external magnetic field that an AC motor can tollerate without adverse effects? This situation occures when motors are operated near other magnetic equipment (i.e. magnetic drums).