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

Black Mn-Fe-P-B composite plating solution as well as using method and film layer formed by solution

A technology of mn-fe-p-b and composite plating solution, applied in the field of surface treatment, can solve problems such as environment and problem hazards, and achieve the effect of avoiding environmental pollution and improving production environment

Active Publication Date: 2015-04-22
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chromium, cadmium, nickel and other harmful substances will cause great harm to the environment and problems in the industrial production, use process and waste disposal of products. However, due to the excellent performance of chromium and nickel plating, they are still widely used in current industrial production use, but it is difficult to be completely replaced by

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
  • Black Mn-Fe-P-B composite plating solution as well as using method and film layer formed by solution
  • Black Mn-Fe-P-B composite plating solution as well as using method and film layer formed by solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The present invention adopts the following steps in order to obtain a Mn-Fe-P-B coating with a first-grade adhesion force on the 45# steel workpiece and a resistance to the neutral salt spray test (NSS) performed by the GB / T 10125-1997 standard for 131 hours:

[0051] (a) Degrease, descale, activate and clean the workpiece made of 45# steel;

[0052] (b) Prepared to contain 80-100 g / L of manganese dihydrogen phosphate, 20-40 g / L of potassium fluoroborate, 150-200 g / L of ferric sulfate, 3-5 g / L of glycine, and Pingpingjia O-20 1 ~3 g / L, sodium dodecyl sulfonate 0.5~1 g / L, sulfuric acid to adjust the pH to 3~4; the process conditions of the workpiece are: the temperature condition is normal temperature, the pulse width is 100 μs, and the cycle is 1000μs single pulse current, its average current density is 7A / dm 2 , voltage 8.6V, electroplating time is 10 minutes.

[0053] (c) After the electroplating is completed, take it out, wash it and dry it.

Embodiment 2

[0055]The present invention adopts the following steps in order to obtain a Mn-Fe-P-B coating on the Zl101 workpiece with a level 1 adhesion and a neutral salt spray test (NSS) resistance of 124 hours according to the GB / T 10125-1997 standard:

[0056] (a) Degrease, descale, activate and clean the Zl101 workpiece;

[0057] (b) Using the acidic copper sulfate electroplating process, pre-plating on the workpiece for 30 minutes and cleaning it;

[0058] (c) Prepared to contain 80-100 g / L of manganese dihydrogen phosphate, 20-40 g / L of potassium fluoroborate, 150-200 g / L of ferric sulfate, 3-5 g / L of glycine, and Pingpingjia O-20 1 ~3 g / L, sodium dodecyl sulfonate 0.5~1 g / L, sulfuric acid to adjust the pH to 3~4; the process conditions of the workpiece are: the temperature condition is normal temperature, the pulse width is 100 μs, and the cycle is 1000μs single pulse current, its average current density is 7A / dm 2 , voltage 8.6V, electroplating time is 10 minutes.

[0059] (d)...

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
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a black Mn-Fe-P-B composite plating solution as well as a using method and a film layer formed by the solution. The plating solution includes the following components: main salts consisting of 80grams / liter-90 grams / liter of manganous dihydrogen phosphate, 20 grams / liter-40 grams / liter of fluoborate and 150 grams / liter -200 grams / liter of ferric sulfate, additives consisting of 3 grams / liter-5 grams / liter of glycine, 1 gram / liter -3 grams / liter of peregalO-20 and 0.5 gram / liter -1 gram / liter of dodecyl sulfonate, a pH regulating gent including sulfuric acid for regulating the pH value to 2-4, wherein the fluoborate is potassium fluoborate, sodium fluoborate or complex thereof, the dodecyl sulfonate is potassium dodecyl sulfate, sodium dodecyl sulfate or complex thereof. The process conditions are as follows: the temperature condition is normal temperature, the single pulse current with pulse width is 100 microseconds and period of 1000 microseconds are selected, wherein the average current density range is 5A / dm<2>-10A / dm<2>, and the voltage range is 5V-15V, and the electroplating time is 5 minutes to 10 minutes. The obtained film layer can be used for replacing a nickel-black chromium electroplating process in environments.

Description

technical field [0001] The invention belongs to the field of surface treatment, and in particular relates to a black Mn-Fe-P-B composite plating solution, a use method and a formed film layer. Background technique [0002] On February 13, 2003, the European Union issued the "Waste Electrical and Electronic Equipment Directive" and the "Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive". The former came into effect on August 13, 2004, and the main content is that the recycling and disposal costs of 99 types of electrical and electronic products in 10 categories exported to the EU will be borne by the manufacturers themselves; the latter will come into effect on July 1, 2006, mainly Prohibit the sale to the EU of electrical and electronic products containing 6 hazardous substances including lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether and polybrominated biphenyl. This directive will involve a 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 Patents(China)
IPC IPC(8): C25D3/56C25D5/18
Inventor 徐临超牛丽媛林继兴史子木叶湖东楼宇民费文斌林天潘陈泽辉
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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