How to deal with the electroplating problem of bonded NdFeB magnets?

Bonded NdFeB magnets are made by mixing, pressing, sintering or bonding ultrafine powders of praseodymium, neodymium, iron and boron after screening. According to the requirements of product use, it is machined into different shapes. Due to the vivid chemical properties of NdFeB materials, they are easily oxidized, so their finished products need to be electroplated and coated.

The quality of electroplating coating of bonded NdFeB magnets is closely related to its pretreatment. This article will share the treatment methods of electroplating problems of bonded NdFeB magnets!

The pretreatment process of bonded NdFeB magnets generally includes degreasing, rust removal, activation and other processes. If one part of this pre-treatment process is not handled cleanly, it will bring potential defects to the final electroplating product, resulting in problems such as blistering and shedding of the electroplating layer.

If magnetic material parts with hidden defects are applied to the equipment, the magnet manufacturer reminds that it may cause the whole machine to malfunction due to the unqualified parts being put on the machine. even have serious consequences.

The pretreatment process of bonded NdFeB magnets is: alkaline degreasing - washing - pickling - washing - surface activation - electroplating. Magnet manufacturers tell you that although this process is simple, it has high requirements for degreasing agents, and special degreasing and degreasing agents for NdFeB are required.