How to remove the impurity in the ndfeb permanent magnet material microporous
Well-known, because of nd-fe-b materials chemistry is vivid, it is easy to oxidation, so the demand of its products for electroplating coating processing. But the quality of electroplating coat is closely related with its pretreatment, the pretreatment technology usually contains degreasing, derusting and activation process. If the former treatment process there is a link to be unclean, will bring electroplating products latent defects, the plating present foaming, fall off and other issues. If with the drawback of the concealment of the permanent magnet material parts once they are applied to the device, may because of the unqualified parts, computer and form the whole machine. Even form a serious consequences.
Ndfeb permanent magnet material is not as close as forging metal material, belongs to the micro groove data, the porous bring many difficulties and trouble processing before plating. In addition to remove artifacts appearance, alkaline, acid and processing process into the dirt, to consider how to clean the dirt from the pores battle.
About usually request is not high grade low permanent magnet materials, the preparation technology for ever: alkaline degreasing - water - acid - washing appearance activation - plating. This technological process is simple, but its higher request of degreasing agent, degreasing agent in ndfeb dedicated to oil demand, the degreasing degreasing agent formula of mixed and disorderly, material demand variety, user manufacturing process is very time-consuming.
Since the permanent magnets manufacturers in the production of high-power ultrasonic cleaning machine after launch, this problem is easy to solve. Ultrasonic cleaning advantaged cavitation effect can make the residual alkali, acid in the permanent magnet material microporous get better wipe out!