CN102703943B - A kind of production method of nanocomposite surface piston ring - Google Patents

A kind of production method of nanocomposite surface piston ring Download PDF

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Publication number
CN102703943B
CN102703943B CN201210162758.6A CN201210162758A CN102703943B CN 102703943 B CN102703943 B CN 102703943B CN 201210162758 A CN201210162758 A CN 201210162758A CN 102703943 B CN102703943 B CN 102703943B
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piston ring
grams per
per liter
electroplate liquid
ring blank
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CN102703943A (en
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魏青松
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Jiangsu Yizheng Jinpai Internal Combustion Engine Components Co Ltd
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Jiangsu Yizheng Jinpai Internal Combustion Engine Components Co Ltd
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Abstract

The invention discloses a kind of production method of nanocomposite surface piston ring.The method is deoiled before plating the piston ring blank of cast iron matrix, surface cleaning; Sandblasting is carried out to piston ring blank; Piston ring blank is put in electroplate liquid one and oppositely etches; Piston ring blank after reverse etching is put into electroplate liquid two and carried out galvanic deposit, and the nano coating thickness that galvanic deposit is formed to piston ring blank periphery is 0.06-0.12mm; Work in-process piston ring is put into abrading cylinder, and break-in is 0.04-0.10mm to nano coating thickness, becomes finished product piston ring.Present method, selection has high abrasion, corrosion-resistant, and the nanometer reinforcing phase with excellent toughness and self lubricity replaces micron-sized conventional solid particle carries out modification to piston ring surface, electroporation is utilized to realize piston ring surface Ni-P crystal grain nanometer, the nano coating that nanophase evenly inlays, improves toughness and the wear resistance of piston ring surface further.

Description

A kind of production method of nanocomposite surface piston ring
Technical field
The present invention relates to piston ring field, particularly relate to a kind of production method of nanocomposite surface piston ring.
Background technology
The competitive high-end piston ring product of existing market is the product adopting the technology such as thermospray, ion implantation, physical vapor deposition, chemical vapour deposition.Thermospray be up to now first dry method approved by U.S. Department of Defense for chromium technology, the advantage of this method to deposit various material, thick coating can be obtained, sedimentation velocity is faster than chromium plating, but cost is high, spraying noise is large, and can only deposit on small area, be not suitable for the large and part of complexity, coating has stress and coarse.Ion implantation modification, comparable layers of chrome more firmly, more wear-resisting; Physical vapor deposition and chemical vapour deposition have the features such as film is hard, wear-resisting, porous, and these technology are that process is complicated equally, and cost is high.The piston ring of the composite deposite technology application of development in recent years, wear resistant composite plating solid particulate is wherein generally ceramic particle, and its granularity is micron order, and its wear resistance is superior, but anti-attrition, erosion resistance are unsatisfactory, and especially coating hardness and toughness are difficult to take into account; Improve hardness often to, to sacrifice toughness for cost, cause fragility to increase, cause the matching of coating and matrix and associativity poor, coating is easy to crack, and hard phase easily comes off.The invention solves above-mentioned deficiency.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, a kind of production method of nanocomposite surface piston ring is provided, the method can make with piston ring surface Ni-P crystal grain nanometer, nano-phase material evenly inlays and has nano coating simultaneously, improve toughness and the wear resistance on piston ring surface surface, and the method is implemented easily simple, production cost is low.
In order to realize foregoing invention object, the technical solution adopted in the present invention is:
1, a production method for nanocomposite surface piston ring, comprises the steps:
1), the piston ring blank of cast iron matrix is plated before deoil, surface cleaning;
2), to piston ring blank carry out sandblasting, make piston ring blank surface be uniform dark grey look;
3), piston ring blank put in electroplate liquid one and oppositely etch, voltage 3-5 lies prostrate, time 35-65 second, and temperature is 55-65 DEG C;
4), by the piston ring blank after reverse etching put into electroplate liquid two and carry out galvanic deposit, temperature 60-70 DEG C during galvanic deposit, pulsewidth 2 milliseconds, average current density 1.5-5.0A/cm 2, dutycycle 1:2-1:8, the nano coating thickness that galvanic deposit is formed to piston ring blank periphery is 0.06-0.12mm, becomes work in-process piston ring;
5), by work in-process piston ring put into abrading cylinder and add abrasive sand and carry out break-in, break-in to nano coating thickness is 0.04-0.10mm, and simultaneously the surperficial rounding, level and smooth of coating, becomes finished product piston ring.
Electroplate liquid one in step 3 take water as solvent, is wherein dissolved with sulfuric acid 1.3-1.7 grams per liter.
Electroplate liquid two in step 4 take water as solvent, single nickel salt 180-260 grams per liter, nickelous chloride 30-60 grams per liter, boric acid 15-40 grams per liter, phosphorous acid 10-40 grams per liter, nano-sized carbon 0.05-2.0 grams per liter, inorganic dispersant 0.01-0.8 grams per liter, pH value 1.2-1.8; In electroplate liquid two, iron ion is less than 10 grams per liters.
Compared with prior art, its beneficial effect is in the present invention:
1, select to have high abrasion, corrosion-resistant, and the nanometer reinforcing phase with excellent toughness and self lubricity replaces micron-sized conventional solid particle such as silicon-carbide particle, silicon nitride particle etc. carries out modification to piston ring surface, modified upper layer has outstanding over-all properties by wear resistance, anti-attrition and solidity to corrosion
2, utilize electroporation to realize piston ring surface Ni-P crystal grain nanometer, simultaneously the nano coating that evenly inlays of nano-phase material, improves toughness and the wear resistance on surface further, and improves piston ring and the occlusion property of friction pair, extend work-ing life.
Embodiment
By most preferred embodiment, technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1
A production method for nanocomposite surface piston ring, deoils before plating to the piston ring blank of cast iron matrix, clean surface; Carry out drying and processing, the piston ring blank after process is carried out sandblasting, makes piston ring blank surface be uniform dark grey look; Piston ring blank is put in electroplate liquid one and oppositely etches, electroplate liquid one take water as solvent, is wherein dissolved with sulfuric acid 1.3 grams per liter, and control voltage is at 3 volts, and 35 seconds time, temperature is 55 DEG C; Piston ring blank after reverse etching is put into electroplate liquid two and carried out galvanic deposit, and electroplate liquid two is solvent with water, is dissolved with single nickel salt 180 grams per liter, nickelous chloride 30 grams per liter, boric acid 15 grams per liter, phosphorous acid 10 grams per liter, nano-sized carbon 0.05/ liter, inorganic dispersant 0.01 grams per liter, pH value 1.2-1.8; In electroplate liquid two, iron ion is less than 10 grams per liters, temperature 60-70 DEG C during galvanic deposit, pulsewidth 2 milliseconds, average current density 1.5-5.0A/cm 2, dutycycle 1:2-1:8, the nano coating thickness that galvanic deposit is formed to piston ring blank periphery is 0.06-0.12mm, becomes work in-process piston ring; Work in-process piston ring is put into abrading cylinder and adds abrasive sand and carry out break-in, break-in to nano coating thickness is 0.04-0.10mm, and simultaneously the surperficial rounding, level and smooth of coating, becomes finished product piston ring.
Embodiment 2
A production method for nanocomposite surface piston ring, deoils before plating to the piston ring blank of cast iron matrix, clean surface; Carry out drying and processing, the piston ring blank after process is carried out sandblasting, makes piston ring blank surface be uniform dark grey look; Piston ring blank is put in electroplate liquid one and oppositely etches, electroplate liquid one take water as solvent, is wherein dissolved with sulfuric acid 1.7 grams per liter, and control voltage is at 5 volts, and 65 seconds time, temperature is 65 DEG C; Piston ring blank after reverse etching is put into electroplate liquid two and carried out galvanic deposit, and electroplate liquid two is solvent with water, is dissolved with single nickel salt 260 grams per liter, nickelous chloride 60 grams per liter, boric acid 40 grams per liter, phosphorous acid 40 grams per liter, nano-sized carbon 2.0 grams per liter, inorganic dispersant 0.8 grams per liter, pH value 1.2-1.8; In electroplate liquid two, iron ion is less than 10 grams per liters, temperature 60-70 DEG C during galvanic deposit, pulsewidth 2 milliseconds, average current density 1.5-5.0A/cm 2, dutycycle 1:2-1:8, the nano coating thickness that galvanic deposit is formed to piston ring blank periphery is 0.06-0.12mm, becomes work in-process piston ring; Work in-process piston ring is put into abrading cylinder and adds abrasive sand and carry out break-in, break-in to nano coating thickness is 0.04-0.10mm, and simultaneously the surperficial rounding, level and smooth of coating, becomes finished product piston ring.
Embodiment 3
A production method for nanocomposite surface piston ring, deoils before plating to the piston ring blank of cast iron matrix, clean surface; Carry out drying and processing, the piston ring blank after process is carried out sandblasting, makes piston ring blank surface be uniform dark grey look; Piston ring blank is put in electroplate liquid one and oppositely etches, electroplate liquid one take water as solvent, is wherein dissolved with sulfuric acid 1.5 grams per liter, and control voltage is at 4 volts, and 50 seconds time, temperature is 60 DEG C; Piston ring blank after reverse etching is put into electroplate liquid two and carried out galvanic deposit, and electroplate liquid two is solvent with water, is dissolved with single nickel salt 220 grams per liter, nickelous chloride 50 grams per liter, boric acid 25 grams per liter, phosphorous acid 30 grams per liter, nano-sized carbon 1 grams per liter, inorganic dispersant 0.5 grams per liter, pH value 1.2-1.8; In electroplate liquid two, iron ion is less than 10 grams per liters, temperature 60-70 DEG C during galvanic deposit, pulsewidth 2 milliseconds, average current density 1.5-5.0A/cm 2, dutycycle 1:2-1:8, the nano coating thickness that galvanic deposit is formed to piston ring blank periphery is 0.06-0.12mm, becomes work in-process piston ring; Work in-process piston ring is put into abrading cylinder and adds abrasive sand and carry out break-in, break-in to nano coating thickness is 0.04-0.10mm, and simultaneously the surperficial rounding, level and smooth of coating, becomes finished product piston ring.

Claims (1)

1. a production method for nanocomposite surface piston ring, is characterized in that, comprises the steps:
1), the piston ring blank of cast iron matrix is plated before deoil, surface cleaning;
2), to piston ring blank carry out sandblasting, make piston ring blank surface be uniform dark grey look;
3), piston ring blank put in electroplate liquid one and oppositely etch, voltage 3-5 lies prostrate, time 35-65 second, and temperature is 55-65 DEG C, and electroplate liquid one take water as solvent, is wherein dissolved with sulfuric acid 1.3-1.7 grams per liter;
4), by the piston ring blank after reverse etching put into electroplate liquid two and carry out galvanic deposit, temperature 60-70 DEG C during galvanic deposit, pulsewidth 2 milliseconds, average current density 1.5-5.0A/cm 2dutycycle 1:2-1:8, the nano coating thickness that galvanic deposit is formed to piston ring blank periphery is 0.06-0.12mm, becomes work in-process piston ring, electroplate liquid two take water as solvent, single nickel salt 180-260 grams per liter, nickelous chloride 30-60 grams per liter, boric acid 15-40 grams per liter, phosphorous acid 10-40 grams per liter, nano-sized carbon 0.05-2.0 grams per liter, inorganic dispersant 0.01-0.8 grams per liter, pH value 1.2-1.8; In electroplate liquid two, iron ion is less than 10 grams per liters;
5), by work in-process piston ring put into abrading cylinder and add abrasive sand and carry out break-in, break-in to nano coating thickness is 0.04-0.10mm, and simultaneously the surperficial rounding, level and smooth of coating, becomes finished product piston ring.
CN201210162758.6A 2012-05-23 2012-05-23 A kind of production method of nanocomposite surface piston ring Active CN102703943B (en)

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Publication number Priority date Publication date Assignee Title
CN108048164B (en) * 2017-12-08 2020-10-20 合肥工业大学 Method for improving tribological performance of internal combustion engine by surface coating and nano lubricant
JP2021042397A (en) * 2017-12-15 2021-03-18 幹晴 高木 Method of micronizing crystal grains in plating film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1676674A (en) * 2005-01-17 2005-10-05 上海大学 Method for preparing nickel-phosphor alloy base composite cladding containing nano particle
CN101328603A (en) * 2008-07-28 2008-12-24 魏青松 Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof
CN201225203Y (en) * 2008-07-29 2009-04-22 魏青松 Surface enhanced antifriction piston ring
EP2261398A1 (en) * 2009-06-10 2010-12-15 Universität des Saarlandes Metal foams

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1676674A (en) * 2005-01-17 2005-10-05 上海大学 Method for preparing nickel-phosphor alloy base composite cladding containing nano particle
CN101328603A (en) * 2008-07-28 2008-12-24 魏青松 Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof
CN201225203Y (en) * 2008-07-29 2009-04-22 魏青松 Surface enhanced antifriction piston ring
EP2261398A1 (en) * 2009-06-10 2010-12-15 Universität des Saarlandes Metal foams

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