Special rotary drum for small-specification neodymium-iron-boron magnetic steel barrel plating

A NdFeB, small-sized technology, applied in the electrolysis process, electrolysis components, etc., can solve the problems of the decrease of the bonding force between the substrate and the coating, the increase of the magnetic attenuation rate of the product, and the decrease of the protection of the coating, so as to reduce the probability of sticking, reduce the Effect of magnetic decay rate and cutting time saving

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A NdFeB, small-sized technology, applied in the electrolysis process, electrolysis components, etc., can solve the problems of the decrease of the bonding force between the substrate and the coating, the increase of the magnetic attenuation rate of the product, and the decrease of the protection of the coating, so as to reduce the probability of sticking, reduce the Effect of magnetic decay rate and cutting time saving

CN111364088AInactive Publication Date: 2020-07-03ZHEJIANG DONGYANG DMEGC RARE EARTH MAGNET CO LTD

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Embodiment 1

[0033] like figure 1 , figure 2In the shown embodiment 1, a special cylinder for barrel plating of small-sized NdFeB magnetic steel includes a cylinder body 1 , a bracket 2 and a transmission mechanism 5 . The cylinder body 1 is hollow olive-shaped as a whole, with small left and right ends and a large middle part. The cross section of the cylinder body 1 is a regular hexagon. End caps 11 are provided at both ends, and the end caps 11 on both sides are fixedly connected with the main shaft 21 respectively. The main shaft 21 is set horizontally. The shafts intersect at the center of the cylinder body 1. An assembly hole is eccentrically arranged on the end cover 11. The end cover 11 is interference fit with one end of the main shaft 21 through the assembly hole. A transmission mechanism 5 is provided on the outside of the left main shaft 21. The transmission mechanism 5 includes sequentially engaged The fourth gear 54 , the third gear 53 , the second gear 52 , the fourth gea...

Embodiment 2

[0036] like figure 2 , image 3 In the shown embodiment 2, a special roller for barrel plating of small-sized NdFeB magnetic steel includes a cylinder body 1 , a bracket 2 and a transmission mechanism 5 . The cylinder body 1 is hollow olive-shaped as a whole, with small left and right ends and a large middle part. The cross section of the cylinder body 1 is a regular hexagon. End caps 11 are provided at both ends, and the end caps 11 on both sides are fixedly connected with the main shaft 21 respectively. The main shaft 21 is set horizontally. The shafts intersect at the center of the cylinder body 1, and an assembly hole is eccentrically arranged on the end cover 11, and the end cover 11 is interference-fitted with one end of the main shaft 21 through the assembly hole. like image 3 As shown, the main shaft 21 is provided with a cavity 211, the cavity 211 runs through the left and right ends of the main shaft 21, the middle part of the main shaft 21 is provided with a fi...

Embodiment example

[0039] Nickel-plated square magnet D7.15*D3.8*0.93, 7.5*1.38 / 3.5*1.1, 3.18*1.7*1.45, 5.88*1.0*0.85 and other small-sized NdFeB magnets in the field of micro motors, after electroplating The thickness of the coating is consistent, and the magnetic decay rate of the magnetic steel is reduced to less than 5%, which meets the needs of users. The neutral salt spray test of the coating is more than 48 hours, and the consistency of the coating is good.

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Abstract

The invention discloses a special rotary drum for small-specification neodymium-iron-boron magnetic steel barrel plating. The special rotary drum comprises a support and a drum body rotatably connected to the support, wherein the drum body is in a shape with two smaller ends and a larger middle portion in the axial direction. According to the special rotary drum, the problems that in the prior art, a small-specification product is prone to attaching to an end wall or a dead angle is formed, so that the bonding force between a base body and a plating layer is reduced, the protective property ofthe plating layer is reduced, the magnetic decay rate of the product is increased, the qaulification rate of the product is reduced, the discharging time is increased, and the production efficiency is reduced are solved, piece sticking and wall attaching during the barrel plating of the product are prevented, the bonding force of the base body and the plating layer is improved, and the protectivecapability of the plating layer is improved; and during electroplating, power line distribution is concentrated, the deposition speed is increased, the magnetic decay rate of the product is reduced,the qualification rate of the product is increased, the discharging speed is high, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of barrel plating equipment, in particular to a special barrel for barrel plating of small-sized NdFeB magnetic steel. Background technique [0002] As we all know, NdFeB magnets have been widely used in micro motors, high-end communication electronic equipment, unmanned aerial vehicles, energy-saving motors, electronics, automatic driving, aerospace and other fields. However, NdFeB magnets adopt a sintered powder metallurgy process. The matrix material is loose and porous, and other rare earth elements such as neodymium are easily oxidized in the air and become invalid. In order to prolong its service life, it must be processed on its surface. Electroplating surface protection treatment can prolong the service life of NdFeB magnets. However, when conventionally used drum electroplating, it is easy to cause product adhesion, sticking and uneven turning for small-sized products, resulting in long product mix...

Claims

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Application Information

Patent Timeline

03 Jul 2020

Publication

CN111364088A

IPC: C25D17/18

CPC: C25D17/18

Inventors: 龙送林; 张有平