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

Stripping solution for chemical nickel-plated coating of cast aluminum piece

A technology for electroless nickel plating and aluminum casting, which is applied to the field of stripping solution for electroless nickel plating of aluminum castings, can solve the problems of long operation time, high stripping cost, damage to substrates, etc., and achieves a simple manufacturing process and reduced Generates cost-effective, easy-to-control effects

Active Publication Date: 2013-06-19
SICHUAN JIUZHOU ELECTRIC GROUP
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the shortcomings of the above-mentioned traditional electroless nickel plating stripping method for cast aluminum parts and the stripping solution used, the present invention provides a kind of electroless nickel plating stripping solution for cast aluminum parts to solve the traditional electroless nickel plating stripping solution. The defect that the solution damages the substrate
[0008] On the other hand, the present invention provides a kind of deplating method based on above-mentioned deplating solution, to solve the problems of complex process, long operation time and high deplating cost in the prior art

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
  • Stripping solution for chemical nickel-plated coating of cast aluminum piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings, but it is not intended to limit the present invention. Such as figure 1 As shown, the deplating solution is firstly deplated in step S1. Specifically, a deplating solution comprising nitric acid, sodium m-nitrobenzenesulfonate, nickel powder, pure water, hydrofluoric acid, and sodium chloride is first mixed to prepare a deplating solution. Among them, hydrofluoric acid and nitric acid are used as oxidizing agents, and sodium chloride and nickel powder are used as corrosion inhibitors. The present invention has no specific requirements on the concentration and pH of the above-mentioned raw materials. Preferably, in the present embodiment, the nitric acid in the deplating solution is 600ml / L, the pure water is 300ml / L, the hydrofluoric acid is 100ml / L, the sodium chloride content is 10g / L, and sodium m-nitrobenzenesulfonate Content is 15g / L, and described nick...

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

No PUM Login to View More

Abstract

The invention provides a stripping solution for the chemical nickel-plated coating of a cast aluminum piece. The stripping solution contains nitric acid, sodium 3-nitrobenzene sulfonate, nickel powder, pure water, hydrofluoric acid and sodium chloride. The stripping solution provided by the invention is capable of realizing secondary utilization of unaccepted materials generated in the chemical nickel-plating production process; therefore, the production process level is greatly improved; and the stripping solution is simple in operation, easy for control, low in cost and the like.

Description

technical field [0001] The invention relates to the field of cast aluminum technology, more specifically, relates to a deplating solution and a deplating method for electroless nickel plating of cast aluminum parts Background technique [0002] The cast aluminum process has the characteristics of high mechanical strength, low density, good thermal and electrical conductivity, good toughness, and easy processing. Therefore, it is widely used in industrial fields, especially aerospace, defense industries, and even people's daily life. Applications. [0003] The surface of cast aluminum is covered with a layer of dense oxide film, which can isolate cast aluminum from the surrounding environment and avoid being oxidized. However, this layer of oxide film is easily corroded by strong acid and strong alkali. At the same time, cast aluminum also produces intergranular corrosion, which reduces the surface hardness and is not wear-resistant. Therefore, corrosion has become one of t...

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 Applications(China)
IPC IPC(8): C23F1/28
Inventor 何锡勇
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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