Isostatic pressing oil removal system

Abstract

The invention relates to the technical field of sintered NdFeB magnets, in particular to an isostatic pressing oil removal system. A first conveying belt with a grating is arranged, multiple first cleaning rollers are arranged on the first conveying belt, a second conveying belt synchronous with the first conveying belt is arranged above the middle segment of the first conveying belt, second cleaning rollers corresponding to the first cleaning rollers in position are arranged on the second conveying belt, the first cleaning rollers and the second cleaning rollers are driven by a friction beltto rotate, blocking of the grating is used, and therefore in the forward process of the first conveying belt, a magnet body pressing blank is subject to friction cleaning due to the first cleaning rollers and the second cleaning rollers, a washing solution can sufficiently dissolve isostatic pressing oil, and the isostatic pressing oil can be sufficiently removed.

Description

technical field [0001] The invention relates to the technical field of sintered NdFeB magnets, in particular to an isostatic pressure oil removal system. Background technique [0002] In the production process of sintered NdFeB magnets, after the magnetic field orientation of the magnet is formed, it needs to go through the isostatic pressing process, specifically, the green compact obtained by pressing the magnetic field press is vacuum-packed and then loaded into the high-pressure chamber of the isostatic press In the middle, under the pressure of about 190MPa for 16-22s; then remove the isostatic pressure oil, remove the vacuum package in a closed space, put it into the material box, and then put the material box into the vacuum sintering furnace for sintering. [0003] In the prior art, the isostatically pressed vacuum-packed magnet compact is usually placed in a drain tank, and the isostatic pressure oil is drained by laying a sponge on the drain tank; and the sponge ca...

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Problems solved by technology

[0003] In the prior art, the isostatically pressed vacuum-packed magnet compact is usually placed in a drain tank, and the isostatic pressure oil is drained by laying a sponge on the drain tank; and the sponge can only absorb the isostatic oil from one side of the magnet. It takes a long time to absorb the isostatic pressure oil through the sponge, and it is difficult to completely remove the isostatic pressure oil in this way. If the static pressure oil is not completely removed, it will be inconvenient to remove the vacuum packaging in the next process. And in the process of unpacking, it is easy to make the magnet compact in the packaging bag be stained with isostatic pressure oil, thus affecting the sintering effect of the magnet

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