Sintered NdFeB magnet coarse crushing and milling techniques include grinding the two processes. Crusher and mill in which the methods differ. As follows:
Should first clear the ingot surface oxide, then Crusher, Crusher in two ways: one is broken hydrogen, the other is the mechanical fragmentation. HD sintered NdFeB magnet when Broken main method of industrial production, machinery will be two closed broken jaw crusher series up. In the high-purity nitrogen atmosphere, the bulk of the alloy ingot broken to 1-3Min of coarse particles, under the protection of pure nitrogen into the ball mill with screen, under the protection of the media will be 1-3min to 246-175 micron particle breakage medium powder, a process commonly known as Crusher.
To 246-175 microns to 3-4 microns medium powder grinding powder, ball milling or air generally use two methods of grinding. Milling a rolling ball mill, vibration mill, high-energy ball milling and so on. Irregular vibration ball milling the powder is not conducive to the magnetic field orientation. High-energy ball milling of the powder particle size is too discrete, and they use less.