CN101187051B - Nano tungsten carbide and nano Teflon electric brush plating liquor preparation process and uses - Google Patents
Nano tungsten carbide and nano Teflon electric brush plating liquor preparation process and uses Download PDFInfo
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- CN101187051B CN101187051B CN2007100455971A CN200710045597A CN101187051B CN 101187051 B CN101187051 B CN 101187051B CN 2007100455971 A CN2007100455971 A CN 2007100455971A CN 200710045597 A CN200710045597 A CN 200710045597A CN 101187051 B CN101187051 B CN 101187051B
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- tungsten carbide
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Abstract
The invention belongs to the technical field of superficial treatment, in particular to a process for preparing nano tungsten carbide and nano polytetrafluoroethylene brush plating bath, which is characterized in that the selection of raw materials: 3 g/L nano tungsten carbide particles whose size is 80-100 nanometer and 5 g/ L nano polytetrafluoroethylene particles whose size is 30-60 nanometer are respectively selected. Mixing: the above raw materials are put in 20 ml/L acetone to be mixed and wet, and then being added into 1 Liter of common posthaste nickel brush plating bath, and 0.1 g/L dispersant tween 40 is further added. Magnetic stirring: obtained fixed bath is firstly stirred by magnetic for 30 minutes. Ultrasonic vibration: the ultrasonic vibration lasts for 60 minutes. Products: the brush plating bath is obtained. Compared with the prior art, the invention has simple confection process, the nano tungsten carbide and the nano polytetrafluoroethylene are equably suspended and dispersed in the compound brush plating bath, and the technological requirements of preparing a nano composite coating are capable of being met.
Description
[technical field]
The invention belongs to technical field of surface, the preparation technology and the application of specifically a kind of nanometer tungsten carbide and nano Teflon electric brush plating liquor.
[technical background]
The research and development of wear resistant friction reducing composite deposite and application thereof are paid attention to by the people of mechanical engineering field always, and it is most important for the work-ing life of improving material how to obtain high performance scuff-resistant coating.The brush coating technology because have that equipment is simple, technology flexibly, the long-pending speed of plating is fast, the coating kind is many, the bonding strength advantages of higher of coating and body material, thereby the reparation, especially a puzzled embodiment repairing or the open-air repairing for big machinery that are widely used in component of machine more have outstanding practical value.Last century, the eighties began, people adopt the brush coating technology to obtain composite deposite, its principle is before brush plating plating a kind of or several insoluble solid particles to be added in the plating bath, make solia particle and metal ion codeposition, thereby and make its equably disperse in metal plating, form composite deposite.But because the solid particulate that adds mostly is micron order in the past, its performance can not satisfy the requirement of development in science and technology, so range of application is subjected to certain limitation.
Since nano material in 1984 is born,, has added the more excellent composite deposite of nano material preparation performance and become possibility because its many Jie that are different from microcosmic and macroscopic material see characteristic.The nano-solid particle of size less than 100nm organically joined in the common electrical brush plating liquid, thereby obtain superior performance, have characteristics such as wear resistance, solidity to corrosion, high temperature oxidation resistance and heat conductivility, thereby the nanometer brush lining that obtains to have in the Surface Engineering field broad application value closes coating.
The brush lining of different nano particles closes the character that the preparation of plating plating bath has determined nano-composite plate to a great extent, and for example the kind of nano particle, size and dimension and brush plating plating bath type, additive, pH value, temperature etc. all have certain influence.People such as Xu Binshi are adding nanometer Al respectively in the nickel coating fast
2O
3, SiC, bortz powder, successfully prepared Ni+ nanometer Al
2O
3/ Ni, three kinds of composite deposites such as Ni+ nano SiC/Ni and Ni+ Nano diamond/Ni, all show than better microhardness of quick nickel brushing coating and anti-fretting wear performance, and for example people such as Cao Maosheng is made into slurries with nanometer Si particulate burning purifying and joins and be prepared into Ni-P-Si nanoparticle plating bath in the Ni-P plating bath, when nanometer Si content was 1g/l, coating hardness can reach HV 600; 400 ℃ of thermal treatment 1h, the hardness of coating can reach maximum HV 900, and for example nano particle is joined and prepared nanometer PTFE composite deposite in the electric brush plating liquor, its surperficial frictional coefficient reduces greatly, the decline degree can reach 30%, but can obtain nano wearproof antifriction composite deposite, how its electric brush plating liquor be prepared and is uniformly dispersed stablely, does not also have at present detailed research and relevant patent report.
[summary of the invention]
The objective of the invention is to overcome the deficiency of present technology, in the fast electric brush plating liquor of common spy, add certain amount of nano wolfram varbide and nanometer polytetrafluoroethylcomposite, by choosing different dispersion agents and dispersing method, and the pH value of appropriate change electric brush plating liquor, nano silicon carbide tungsten particle and nanometer polytetrafluoroethylcomposite particle fully are uniformly dispersed in the fast nickel electric brush plating liquor of common spy, stable suspersion, thus nanometer tungsten carbide and nanometer polytetrafluoroethylcomposite wear resistant friction reducing composite deposite on the basis of technique of brush plating, obtained.
For achieving the above object, design the preparation technology of a kind of nanometer tungsten carbide and nano Teflon electric brush plating liquor, it is characterized in that: (1) chooses raw material: choose the nanometer tungsten carbide WC particle 3g/L that is of a size of 80-100nm respectively; Be of a size of the nanometer polytetrafluoroethylcomposite PTFE particle 5g/L of 30-60nm; (2) mix: above-mentioned raw materials is put into 20ml/L acetone mix moisteningly, all join then in the fast nickel electric brush plating liquor of the common spy of 1L, add the dispersion agent polysorbate40 of 0.1g/L again; (3) magnetic agitation: gained mixing plating bath is carried out magnetic agitation 30min earlier; (4) sonic oscillation: sonic oscillation 60min; (5) get finished product: obtain nanometer tungsten carbide and nano Teflon electric brush plating liquor.The brush that the plating bath of described preparation technology's preparation is applied to machinery, automobile, petrochemical industry, electric power, chemical industry, aviation field is coated with wear resistant friction reducing composite deposite fully.Described brush is coated with fully, and the processing step of wear resistant friction reducing composite deposite is:
Speed during brush plating
Processing step voltage/V connection time/s
(m/min)
The workpiece surface pre-treatment // //
Electricity clean 12 is just connecing 10 30
2
#Activation solution activates 12 reversal connections 10 10
3
#Activation solution activates 20 reversal connections 10 30
Special nickel bottoming 12 is just connecing 10 90
The brush lining closes coating 12 and is just connecing 10 900
Compared with prior art, blending process of the present invention is simple and reliable; Nanometer tungsten carbide and nanometer polytetrafluoroethylcomposite even suspended dispersed and can satisfy the processing requirement for preparing nano-composite plate in composite plating bath; The performance of the nano-composite plate by the preparation of this plating bath can satisfy the requirement of engineering of most of wear resistant friction reducing component.
[embodiment]
The invention will be further described below in conjunction with example, and this Technology still is more clearly concerning this professional people.
Embodiment
The process for preparation of nanometer tungsten carbide and nano Teflon electric brush plating liquor is as follows: choose the nanometer tungsten carbide WC particle 3g/L that is of a size of 80-100nm respectively; Be of a size of the nanometer polytetrafluoroethylcomposite PTFE particle 5g/L of 30-60nm, in 20ml/L acetone, mix both moistening, all join then in the fast nickel electric brush plating liquor of the common spy of 1L, the dispersion agent polysorbate40 that adds 0.1g/L again, then composite plating bath is carried out magnetic agitation 30min earlier, again behind the sonic oscillation 60min, obtain nanometer tungsten carbide and nano Teflon electric brush lining and close plating bath, this composite plating bath can be in 2 hours homodisperse, stable suspersion can not produce the precipitation of tangible agglomerating particles.The concentration of each raw material that more than relates to is all at the fast nickel electric brush plating liquor of the common spy of 1L.
Then, utilize above-mentioned nanometer tungsten carbide and nano Teflon electric brush plating liquor to prepare the wear resistant friction reducing composite deposite:
One, workpiece surface pre-treatment
As at Q235 steel surface preparation nanometer tungsten carbide and nanometer polytetrafluoroethylcomposite wear resistant friction reducing composite deposite, earlier sample is cleaned, grinds, polishes, make its surfacing, no marking, no spot, there are not basic surface processing such as burr around the sample;
As at high speed steel W 6Mo5Cr4V2 surface preparation nanometer tungsten carbide and nanometer polytetrafluoroethylcomposite wear resistant friction reducing composite deposite, earlier sample is cleaned, grinds, polishes, make its surfacing, no marking, no spot, there are not basic surface processing such as burr around the sample;
Two, electricity is clean
Adopt 12 volts of voltages, just connect, brush plating speed is 10m/min, and the time is 30s;
Three, 2
#The activation solution activation
Adopt brush plating 2
#The activation solution activation, voltage is 12 volts of reversal connections, and brush plating speed is 10m/min, and soak time is 10s;
Four, 3
#The activation solution activation
Adopt brush plating 3
#The activation solution activation, voltage is 20 volts of reversal connections, and brush plating speed is 10m/min, and soak time is 30s;
Five, special nickel bottoming
Technology is that voltage just connects for 12 volts, and brush plating speed is 10m/min, and the time is 90s;
Six, the brush lining closes coating
Adopt nanometer tungsten carbide and nano Teflon electric brush lining to close plating bath and carry out the brush lining and close coating, voltage just connects for 12 volts, and brush plating speed is 10m/min, and the time is 900s.
At Q235 steel surface preparation nanometer tungsten carbide and nanometer polytetrafluoroethylcomposite wear resistant friction reducing composite deposite, sample surfaces hardness maximum hardness can reach more than the Hv700, improve more than 50% than the common electrical brush plating coating that does not add nanometer wolfram varbide and nanometer polytetrafluoroethylcomposite, wear resistance is enhanced about more than once, and frictional coefficient descends more than 20%.
At high speed steel W 6Mo5Cr4V2 surface preparation nanometer tungsten carbide and nanometer polytetrafluoroethylcomposite wear resistant friction reducing composite deposite, sample surfaces hardness improves more than 50%, and tensile strength improves 30%, and crack growth resistance obviously improves, and corrosion resisting property obviously improves.
As seen, adopt the nanometer tungsten carbide and the nano Teflon electric brush plating liquor of above-mentioned prepared, and the wear resistant friction reducing composite deposite of associated electrical brush-plating technique preparation, its composite deposite organize tiny densification, coating surface more level and smooth, the coating surface microhardness, hardness than the coating of common electrical brush plating liquid brush plating is high more than 50%, wear resistance is enhanced about more than once, frictional coefficient descends more than 20%, solidity to corrosion also can obviously improve, composite deposite still keeps microhardness Hv to reach 500 when using for 300 ℃, has better hardness stability.
Claims (2)
1. the preparation technology of nanometer tungsten carbide and nano Teflon electric brush plating liquor, it is characterized in that: (1) chooses raw material: choose the nanometer tungsten carbide WC particle 3g/L that is of a size of 80-100nm respectively; Be of a size of the nanometer polytetrafluoroethylcomposite PTFE particle 5g/L of 30-60nm; (2) mix: above-mentioned raw materials is put into 20ml/L acetone mix moisteningly, all join then in the fast nickel electric brush plating liquor of the common spy of 1L, add the dispersion agent polysorbate40 of 0.1g/L again; (3) magnetic agitation: gained mixing plating bath is carried out magnetic agitation 30min earlier; (4) sonic oscillation: sonic oscillation 60min; (5) get finished product: obtain nanometer tungsten carbide and nano Teflon electric brush plating liquor.
2. the technology of a kind of nanometer tungsten carbide as claimed in claim 1 and nano Teflon electric brush plating liquor, the processing step of wear resistant friction reducing composite deposite is to it is characterized in that being coated with fully by described brush:
Speed during brush plating
Processing step voltage/V connection time/s
(m/min)
The workpiece surface pre-treatment // //
Electricity clean 12 is just connecing 10 30
2
#Activation solution activates 12 reversal connections 10 10
3
#Activation solution activates 20 reversal connections 10 30
Special nickel bottoming 12 is just connecing 10 90
The brush lining closes coating 12 and is just connecing 10 900
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100455971A CN101187051B (en) | 2007-09-05 | 2007-09-05 | Nano tungsten carbide and nano Teflon electric brush plating liquor preparation process and uses |
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|---|---|---|---|
| CN2007100455971A CN101187051B (en) | 2007-09-05 | 2007-09-05 | Nano tungsten carbide and nano Teflon electric brush plating liquor preparation process and uses |
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| Publication Number | Publication Date |
|---|---|
| CN101187051A CN101187051A (en) | 2008-05-28 |
| CN101187051B true CN101187051B (en) | 2010-10-06 |
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| CN2007100455971A Expired - Fee Related CN101187051B (en) | 2007-09-05 | 2007-09-05 | Nano tungsten carbide and nano Teflon electric brush plating liquor preparation process and uses |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102677132A (en) * | 2012-05-28 | 2012-09-19 | 大连理工大学 | Method for preparing super-hydrophobic coating of metallic matrix |
| CN104818501A (en) * | 2015-04-27 | 2015-08-05 | 模德模具(东莞)有限公司 | Nickel-Teflon coating machining process applied to screws and nuts |
| CN104818502A (en) * | 2015-04-27 | 2015-08-05 | 模德模具(东莞)有限公司 | Production process of production device applying nickel-Teflon coating |
| CN106048678A (en) * | 2016-05-27 | 2016-10-26 | 南昌大学 | Preparation method for composite multilayer nano Ni-WC/PTFE-CNTs electric brush plating layer |
| CN105970259A (en) * | 2016-05-27 | 2016-09-28 | 南昌大学 | Method for preparing nanometer Ni-PTFE/CNTs composite coating based on nano brush electroplating technology |
| CN106571573A (en) * | 2016-10-31 | 2017-04-19 | 阜阳市鼎铭汽车配件制造有限公司 | Highly wear-resistant copper-based graphite motor carbon brush doped with nano diamond and preparation method thereof |
| CN106702446B (en) * | 2016-12-26 | 2018-12-25 | 重庆派馨特机电有限公司 | A kind of stirring-head process of surface treatment |
| CN107326406A (en) * | 2017-07-04 | 2017-11-07 | 苏州热工研究院有限公司 | A kind of protection of flow passage components narrow gap position erosion resistance layer, restorative procedure |
| CN108559858A (en) * | 2017-11-02 | 2018-09-21 | 东莞市金羽丰知识产权服务有限公司 | Bionical turbulent flow permanent magnetic stirring smelting process |
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