I have a U shape metal core and want to buy a permanent magnetwhich I can place between the core's ends "thus completing the flux path through the core". the permanent magnet must not saturate the core, I also have the H-B curve fore the core material.
In the H-B curve, the point at which the material becomes saturated is at 1 "Magnetizing Force-H-Oersteds"
Do I look for a permanent magnet which has less than 1 Magnetizing Force in H-Oersteds? well, they are rated by their energy products number MGOe as in here. The second thing, I thought the volume of the material in the core must effect the saturation, i.e. the more the volume the more magnetizing force it will need before it gets saturated, well how come the H-B curve does not show this?
Please help me understand those issues.
thx
The magnetic force figure (strength of material) is un-related to the volume of the stuff. Thats why there is no strength/ volume figure and also why there is and has been a world-wide effort to develop new and cheaper high strength magnets; ie smaller PM motor packages (cars), etc.
Cheers, DPW [ Everything has limitations...and I hate limitations.]
Most of the stuff is old news, dated around 2001. Yet to read it it is only up until the author starts his business. I suspect the business is up and running myself.
__________________ .. "Good enough is enemy of the best." An old engineering saying, Author unknown.
General info: If you have a question, please start a thread/topic. I do not provide gratis assistance via PM nor E-mail, as that would violate the intent of this Board, which is sharing knowledge ... and deprives you of other knowledgeable input. Thanks for the verbage Wookie.
I am trying to make a tool hanger by extending a long metal U shape bar across a 4 meter wall. instead of buying a 4 meter magnet, why not use a much smaller one and let the flux path activate the rest of the "core". then I have my good and cheap magnetic tool hanger.
