Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of electroplating method of sintered NdFeB material

A neodymium-iron-boron and electro-galvanizing technology is applied in the field of electroplating of sintered neodymium-iron-boron materials, which can solve the problems of high cost, large quality fluctuation, numerous electroplating methods and procedures, and achieve the effect of reducing corrosion

Active Publication Date: 2021-01-15
NINGBO YUNSHENG +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned first electroplating method, although the electroplating bottom zinc layer and the sintered NdFeB material have a good bonding force, the electroplating method has many procedures and very high cost, and the batch stability of the zinc-nickel alloy coating is poor. , the quality fluctuates greatly, and the qualified rate is low; the above-mentioned second electroplating method has mature and stable process, low cost, and high corrosion resistance and high temperature resistance, but the bonding force between the coating and the sintered NdFeB material is very poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of electroplating method of sintered NdFeB material
  • A kind of electroplating method of sintered NdFeB material
  • A kind of electroplating method of sintered NdFeB material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: a kind of electroplating method of sintered NdFeB material, comprises the following steps:

[0021](1) Polishing the sintered NdFeB material: first put the sintered NdFeB material into the drum, drive the drum to rotate for 6 hours, then take the sintered NdFeB material out of the drum, wash and dry it with clean water; The specific way of rotating the drum is as follows: first rotate for 1 hour at a rotating speed of 10 r / min, then rotate for 2 hours at a rotating speed of 20 r / min, and finally rotate for 3 hours at a rotating speed of 30 r / min.

[0022] (2) Degreasing the sintered NdFeB material after polishing: soak the sintered NdFeB material in the degreasing solution for 4 minutes, then take it out and wash it with water twice. The temperature of the degreasing solution is 38 °C, the degreasing solution is a sodium hydroxide solution with a concentration of 2g / L;

[0023] (3) Carry out the first pickling of the sintered NdFeB material after the de...

Embodiment 2

[0031] Embodiment two: a kind of electroplating method of sintered NdFeB material, comprises the following steps:

[0032] (1) Polishing the sintered NdFeB material: first put the sintered NdFeB material into the drum, drive the drum to rotate for 8 hours, then take the sintered NdFeB material out of the drum, wash and dry it with clean water; The specific way of rotating the drum is as follows: first rotate for 1 hour at a rotating speed of 10 r / min, then rotate for 2 hours at a rotating speed of 20 r / min, and finally rotate for 5 hours at a rotating speed of 30 r / min.

[0033] (2) Degreasing the sintered NdFeB material after polishing: soak the sintered NdFeB material in the degreasing solution for 8 minutes, then take it out and wash it with water twice. The temperature of the degreasing solution is 43 °C, the degreasing solution is a sodium hydroxide solution with a concentration of 4g / L;

[0034] (3) Carry out the first pickling of the sintered NdFeB material after the d...

Embodiment 3

[0042] Embodiment three: a kind of electroplating method of sintered NdFeB material, comprises the following steps:

[0043] (1) Polishing the sintered NdFeB material: first put the sintered NdFeB material into the drum, drive the drum to rotate for 7 hours, then take the sintered NdFeB material out of the drum, wash and dry it with clean water; The specific way of rotating the drum is as follows: first rotate for 1 hour at a rotating speed of 10 r / min, then rotate for 2 hours at a rotating speed of 20 r / min, and finally rotate for 4 hours at a rotating speed of 30 r / min.

[0044] (2) Degreasing the sintered NdFeB material after polishing: soak the sintered NdFeB material in the degreasing solution for 6 minutes, then take it out and wash it with water twice. The temperature of the degreasing solution is 40 °C, the degreasing solution is a sodium hydroxide solution with a concentration of 3g / L;

[0045] (3) Carry out the first pickling of the sintered NdFeB material after the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses an electroplating method for a sintered nd-fe-b material. The method comprises the following steps that the sintered nd-fe-b material is polished and ground; the polished and ground sintered nd-fe-b material is ungreased; the ungreased sintered nd-fe-b material is subjected to first acid pickling; the sintered nd-fe-b material subjected to first acid pickling is subjected to ultrasonic oil removal treatment; and the sintered nd-fe-b material subjected to ultrasonic oil removal treatment is subjected to third washing, second acid pickling, electronickelling, ultrasonic washing and hot air drying. The electroplating method has the beneficial effects of being low in cost and high in corrosion resistance, high temperature resistance and binding force.

Description

technical field [0001] The invention relates to an electroplating method, in particular to an electroplating method for sintered NdFeB materials. Background technique [0002] Sintered NdFeB material is a lively alloy material, and its material is loose and porous, which is very easy to be oxidized and corroded. Therefore, it is necessary to coat other oxidation and corrosion resistant materials on the surface of sintered NdFeB material for protection. Electroplating is a very widely used protective method in the NdFeB industry. Common electroplating methods include electroplating zinc and electroplating nickel-copper-nickel. With the development of NdFeB manufacturing process, higher requirements are put forward for the protective coating of sintered NdFeB materials, which not only require high corrosion resistance, but also high temperature resistance and high bonding force. However, current single-layer protective coatings cannot meet these requirements. For this reason...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/12C25D3/12C25D3/22C25D5/34
CPCC25D3/12C25D3/22C25D5/12C25D5/34
Inventor 柴大勇彭彩彩
Owner NINGBO YUNSHENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com