Encasing Magnets to prevent demagnetizing. Glue?
Encasing Magnets to prevent demagnetizing. Glue?
(OP)
I'm working on a project, that requires magnets attached to the side of an aluminum casting, with the potential of 160kA pulling through the casting. Not being too familiar with magnets, we tested the assembly with an AlNiCo horseshoe magnet at 75kA. I bet you can guess that outcome.
Since then, we've moved on to NdFeB, and possibly SmCo magnets. I'm thinking I will use a similar horseshoe shape, with the 2 magnets encased in a low carbon steel rod. Does anyone have experience with the thickness I need to use to encase the magnet? I'll start with a 1/2 dia x 1 magnetic rod. Also, what kind of adhesive do you recommend keeping the magnet in the steel?
Since then, we've moved on to NdFeB, and possibly SmCo magnets. I'm thinking I will use a similar horseshoe shape, with the 2 magnets encased in a low carbon steel rod. Does anyone have experience with the thickness I need to use to encase the magnet? I'll start with a 1/2 dia x 1 magnetic rod. Also, what kind of adhesive do you recommend keeping the magnet in the steel?





RE: Encasing Magnets to prevent demagnetizing. Glue?
RE: Encasing Magnets to prevent demagnetizing. Glue?
RE: Encasing Magnets to prevent demagnetizing. Glue?
RE: Encasing Magnets to prevent demagnetizing. Glue?
RE: Encasing Magnets to prevent demagnetizing. Glue?
RE: Encasing Magnets to prevent demagnetizing. Glue?
RE: Encasing Magnets to prevent demagnetizing. Glue?
The pulling force is strongly related to the distance betrween magnets and steel. horseshoe shape doesnot matter as long as you are forming a close circuit.
if red ones are magnets, top plate is steel, 2D software will get you nowhere. Thinking about how the magnetic flux flows will help you to mkae an ideal design.
RE: Encasing Magnets to prevent demagnetizing. Glue?
The design I currently have is replacing the horsehoe magnets with the design above. On the top I would have the left magnets in N, and the right magnets in S. the magnets below would swap. The plate in between is aluminum, its just a plate for the magnet to rest against when its pulled up by the top assembly.
Right now, the magnets are pulling too early, because our the field is too wide at the pickup point. I need a way to narrow the field significantly, without losing any strength at the middle of the field.
RE: Encasing Magnets to prevent demagnetizing. Glue?