CN101328603B - Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof - Google Patents
Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof Download PDFInfo
- Publication number
- CN101328603B CN101328603B CN2008100227486A CN200810022748A CN101328603B CN 101328603 B CN101328603 B CN 101328603B CN 2008100227486 A CN2008100227486 A CN 2008100227486A CN 200810022748 A CN200810022748 A CN 200810022748A CN 101328603 B CN101328603 B CN 101328603B
- Authority
- CN
- China
- Prior art keywords
- piston ring
- electroplate liquid
- chromium layer
- chromium
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention discloses an electrodeposition chromium-base binary particle composite reinforced surface treatment piston ring in the combustion engine field, comprising a cast iron substrate, wherein, a chromium layer with a thickness between 0.08 and 0.15 millimeter is arranged on the surface of an excircle of the cast iron substarte; supramoly powder and graphite powder with a particle diameter between 0.7 and 1.5 micrometers are uniformly dispersed in the chromium layer, wherein, the volume ratio of the supramoly powder to the graphite powder is 0.5 to 1.5, and the total volume of the supramoly powder and the graphite powder is 0.025 to 0.25 time of the volume of the chromium layer. The piston ring is prepared through cleaning, abrasive blasting, reverse etching, electroplating and dull polish on a blank piece of the cast iron substrate; and under the condition of electroplating, the supramoly powder and the graphite powder are added into an electroplate liquid 2 and then stirred so as to make the two types of powder uniformly enter into the chromium layer. When the piston ring is operated, the piston ring can give play to the function of self-lubrication with low friction coefficient, can obviously improve the service life of a cylinder and the piston ring, and can be applied to various internal combustion engines.
Description
Technical field
The present invention relates to a kind of oil engine, particularly the piston ring of oil engine and manufacture method thereof.
Background technology
In the prior art, a kind of chrome faced piston ring is arranged, it mainly comprises cast iron basic unit, is electroplate with the chromium layer of thickness 0.08-0.15mm at the outer round surface of cast iron basic unit; This chromium layer is the higher chromium of purity, and chromium has the advantage of high rigidity, can make piston ring more wear-resisting; But the existing piston ring also has its weak point: piston ring and cylinder sleeve are a pair of friction pair, and the excessive piston ring of hardness in the course of the work, the wearing and tearing of cylinder sleeve have been aggravated, in addition, poor near the Oil Lubrication Condition of the top land first road ring, work sometimes even under unlubricated condition; How making the existing chrome plated piston ring can be more wear-resisting, simultaneously, under the prerequisite that does not change cylinder liner internal wall hardness, can reduce the wearing and tearing to cylinder sleeve again, in the oil engine industry, be a problem that is difficult to capture.
Summary of the invention
One of purpose of the present invention provides a kind of shortcoming that overcomes existing chrome plated piston ring, a kind of galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring is provided, add molybdenumdisulphide powder and powdered graphite with antifriction self-lubricating effect, frictional coefficient between piston ring surface and the cylinder liner internal wall is reduced, and the wearing and tearing of cylinder sleeve still less.
For this reason, galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring provided by the invention, comprise cast iron basic unit, be provided with the chromium layer of thickness 0.08-0.15mm at the outer round surface of cast iron basic unit, homodisperse has molybdenumdisulphide powder and powdered graphite in the described chromium layer, the particle diameter of molybdenumdisulphide powder and powdered graphite is 0.7-1.5 μ m, wherein, the volume ratio of molybdenumdisulphide powder and powdered graphite is 0.5-1.5, and the volume sum of molybdenumdisulphide powder and powdered graphite is 0.025-0.05 a times of chromium layer volume.
Piston ring provided by the invention is when work, all the time have a certain amount of molybdenumdisulphide powder and powdered graphite and participate in friction process, between piston ring and cylinder inner wall, form friction layer, this friction layer has good antifriction and self-lubricating function, molybdenumdisulphide powder and powdered graphite synergy, in the differing temps zone of cylinder operation, even at the frictional coefficient that all can effectively reduce under the oil-free lubricatoin condition between piston ring and the cylinder inner wall, thereby reduction friction resistance, make piston ring and cylinder all can reduce wear, not only obviously improve the work-ing life of cylinder and piston ring, and improve engine operation efficient.The invention provides a kind of thinking different from the past fully, by reducing frictional coefficient, improve between piston ring and cylinder and joining of surface of friction pay performance, rather than improve hardness simply and reach anti abrasive purpose, the piston ring that is provided, can be applicable to various oil engines, in petrol motor, diesel engine.
The present invention also provides production method for above-mentioned a kind of galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, and this method comprises following processing step successively:
A) before being plated, the piston ring blank of cast iron matrix deoils clean surface;
B) the piston ring blank is carried out sandblasting, make piston ring blank surface be uniform dark grey look;
C) the piston ring blank is put into carried out reverse etching in the electroplate liquid one: electroplate liquid one is a solvent with water, wherein is dissolved with chromic anhydride 150-200 grams per liter; Trivalent chromium is less than 10.5 grams per liters in the electroplate liquid one; When carrying out reverse etching, voltage 3-5 volt, carries out etching at 55-65 ℃ of degree at time 35-65 second;
D) electroplate in electroplate liquid two: electroplate liquid two is a solvent with water, be dissolved with chromic anhydride 200-400 grams per liter, sulfuric acid 1.2-3.5 grams per liter is in the molybdenumdisulphide powder and powdered graphite adding electroplate liquid of 0.5-1.5 with particle diameter 0.7-1.5 μ m, volume ratio, add-on is the 5-25 grams per liter, uniform mixing; Trivalent chromium is less than 10.5 grams per liters in the requirement electroplate liquid two, and iron ion is less than 10.5 grams per liters; Piston ring blank after the reverse etching is put into electroplate liquid two to be electroplated, temperature 57-65 during plating ℃, electric current 800-1800 ampere, in the electroplating process, constantly bubbling air stirs, and makes molybdenumdisulphide powder and powdered graphite can keep being dispersed in the electroplate liquid two; The thickness that is electroplated to the chromium layer that piston ring blank periphery forms is 0.10-0.20mm, becomes the work in-process piston ring, in this work in-process piston ring, and the volume of molybdenumdisulphide powder and powdered graphite and be 0.025-0.05 times of chromium layer volume;
E) the work in-process piston ring is put into abrading cylinder and add abrasive sand and carry out break-in, break-in to chromium layer thickness is 0.08-0.15mm, and the surperficial rounding of chromium layer, level and smooth becomes the finished product piston ring simultaneously.
Produce piston ring according to this method, its production method is simple, convenient, and molybdenumdisulphide powder and powdered graphite can be dispersed in the chromium layer, and its enforcement is effective.
Embodiment
Embodiment 1
A kind of galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, comprise cast iron basic unit, be electroplate with the chromium layer of thickness 0.08mm at the outer round surface of cast iron basic unit, homodisperse has molybdenumdisulphide powder and powdered graphite in the described chromium layer, the particle diameter of molybdenumdisulphide powder and powdered graphite is 0.7 μ m, wherein, the volume ratio of molybdenumdisulphide powder and powdered graphite is 0.5, and the volume sum of molybdenumdisulphide powder and powdered graphite is 0.025 times of chromium layer volume.
The production method of this galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, this method steps is as follows:
At first, deoil before the piston ring blank of cast iron matrix plated, clean surface makes its cleaning surfaces, no greasy dirt and other pollutants; Again the piston ring blank is carried out sandblasting, make piston ring blank surface be uniform dark grey look; Then, the piston ring blank put into carry out reverse etching in the electroplate liquid one: electroplate liquid one is a solvent with water, wherein is dissolved with chromic anhydride 150 grams per liters; Trivalent chromium is less than 10.5 grams per liters in the electroplate liquid one, and trivalent chromium is higher than this standard and then can not uses in the electroplate liquid one; When carrying out reverse etching, 3 volts of voltages, carry out etching at 55-65 ℃ of degree at 65 seconds time; After finishing reverse etching, can electroplate in electroplate liquid two: electroplate liquid two is a solvent with water, be dissolved with chromic anhydride 200 grams per liters, sulfuric acid 1.2 grams per liters, with particle diameter 0.7 μ m, both mutual volume ratios is that 0.5 molybdenumdisulphide powder and powdered graphite add in the electroplate liquid, add-on is 5 grams per liters, uniform mixing; Trivalent chromium is less than 10.5 grams per liters in the requirement electroplate liquid two, and iron ion is less than 10.5 grams per liters, and second the electroplate liquid that is higher than this index can not use; Temperature 57-65 ℃, electric current 800-1000 ampere when the piston ring blank is electroplated in electroplate liquid two, in the electroplating process, constantly bubbling air stirs, make molybdenumdisulphide powder and powdered graphite can keep being dispersed in the electroplate liquid two, chromium ion in the electroplate liquid is separated out and is deposited on piston ring blank outer round surface, when chromium was separated out, the molybdenumdisulphide powder contacted and constantly is wrapped with piston ring blank surface with powdered graphite and enters in the chromium layer; The thickness that is electroplated to the chromium layer that piston ring blank periphery forms is 0.10mm, becomes the work in-process piston ring, in this work in-process piston ring, and the volume of molybdenumdisulphide powder and powdered graphite and be 0.025 times of chromium layer volume; At last, the work in-process piston ring put into abrading cylinder and add abrasive sand carry out break-in, break-in to chromium layer thickness is 0.08mm, the surperficial rounding of while chromium layer, level and smooth, become the finished product piston ring, the purpose of break-in is to make the piston ring surface more level and smooth, grinds off the irregular projection on surface, for and cylinder wall between the break-in of working lay good basis, reduce its work seating time.
Embodiment 2
Another galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, comprise cast iron basic unit, be electroplate with the chromium layer of thickness 0.15mm at the outer round surface of cast iron basic unit, homodisperse has molybdenumdisulphide powder and powdered graphite in the described chromium layer, the particle diameter of molybdenumdisulphide powder and powdered graphite is 1.5 μ m, wherein, the volume ratio of molybdenumdisulphide powder and powdered graphite is 1.5, and the volume sum of molybdenumdisulphide powder and powdered graphite is 0.05 times of chromium layer volume.
The production method of this galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring comprises following processing step successively:
A) before being plated, the piston ring blank of cast iron matrix deoils clean surface;
B) the piston ring blank is carried out sandblasting, make piston ring blank surface be uniform dark grey look;
C) the piston ring blank is put into carried out reverse etching in the electroplate liquid one: electroplate liquid one is a solvent with water, wherein is dissolved with chromic anhydride 200 grams per liters; Trivalent chromium is less than 10.5 grams per liters in the electroplate liquid one; When carrying out reverse etching, voltage 3-5 volt, carries out etching at 55-65 ℃ of degree at 35 seconds time;
D) electroplate in electroplate liquid two: electroplate liquid two is a solvent with water, be dissolved with chromic anhydride 400 grams per liters, sulfuric acid 3.5 grams per liters are that 1.5 molybdenumdisulphide powder and powdered graphite add in the electroplate liquid with particle diameter 0.0020mm, volume ratio, add-on is 25 grams per liters, uniform mixing; Trivalent chromium is less than 10.5 grams per liters in the requirement electroplate liquid two, and iron ion is less than 10.5 grams per liters; Piston ring blank after the reverse etching is put into electroplate liquid two to be electroplated, temperature 57-65 during plating ℃, electric current 1600-1800 ampere, in the electroplating process, constantly bubbling air stirs, and makes molybdenumdisulphide powder and powdered graphite can keep being dispersed in the electroplate liquid two; The thickness that is electroplated to the chromium layer that piston ring blank periphery forms is 0.20mm, becomes the work in-process piston ring, in this work in-process piston ring, and the volume of molybdenumdisulphide powder and powdered graphite and be 0.075 of chromium layer volume;
E) the work in-process piston ring is put into abrading cylinder and add abrasive sand and carry out break-in, break-in to chromium layer thickness is 0.15mm, and the surperficial rounding of chromium layer, level and smooth becomes the finished product piston ring simultaneously.
Embodiment 3
Be the third galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, comprise cast iron basic unit, be electroplate with the chromium layer of thickness 0.10mm at the outer round surface of cast iron basic unit, homodisperse has molybdenumdisulphide powder and powdered graphite in the described chromium layer, the particle diameter of molybdenumdisulphide powder and powdered graphite is 1.0 μ m, wherein, the volume ratio of molybdenumdisulphide powder and powdered graphite is 1, and the volume sum of molybdenumdisulphide powder and powdered graphite is 0.03 times of chromium layer volume.
The production method of this galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, this method steps is as follows:
At first, deoil before the piston ring blank of cast iron matrix plated, clean surface makes its cleaning surfaces, no greasy dirt and other pollutants; Again the piston ring blank is carried out sandblasting, make piston ring blank surface be uniform dark grey look; Then, the piston ring blank put into carry out reverse etching in the electroplate liquid one: electroplate liquid one is a solvent with water, wherein is dissolved with chromic anhydride 180 grams per liters; Trivalent chromium is less than 10.5 grams per liters in the electroplate liquid one, and trivalent chromium is higher than this standard and then can not uses in the electroplate liquid one; When carrying out reverse etching, 4 volts of voltages, carry out etching at 55-65 ℃ of degree at 45 seconds time; After finishing reverse etching, can electroplate in electroplate liquid two: electroplate liquid two is a solvent with water, be dissolved with chromic anhydride 200 grams per liters, sulfuric acid 1.2 grams per liters, with particle diameter 1.0 μ m, both mutual volume ratios is that 1 molybdenumdisulphide powder and powdered graphite add in the electroplate liquid, add-on is 15 grams per liters, uniform mixing; Trivalent chromium is less than 10.5 grams per liters in the requirement electroplate liquid two, and iron ion is less than 10.5 grams per liters, and second the electroplate liquid that is higher than this index can not use; Temperature 57-65 ℃, electric current 1000-1200 ampere when the piston ring blank is electroplated in electroplate liquid two, in the electroplating process, constantly bubbling air stirs, make molybdenumdisulphide powder and powdered graphite can keep being dispersed in the electroplate liquid two, chromium ion in the electroplate liquid is separated out and is deposited on piston ring blank outer round surface, when chromium was separated out, the molybdenumdisulphide powder contacted and constantly is wrapped with piston ring blank surface with powdered graphite and enters in the chromium layer; The thickness that is electroplated to the chromium layer that piston ring blank periphery forms is 0.13mm, becomes the work in-process piston ring, in this work in-process piston ring, and the volume of molybdenumdisulphide powder and powdered graphite and be 0.035 times of chromium layer volume; At last, the work in-process piston ring put into abrading cylinder and add abrasive sand carry out break-in, break-in to chromium layer thickness is 0.10mm.
Embodiment 4
Be the 4th kind of galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, comprise cast iron basic unit, be provided with the chromium layer of thickness 0.12mm at the outer round surface of cast iron basic unit, homodisperse has molybdenumdisulphide powder and powdered graphite in the described chromium layer, the particle diameter of molybdenumdisulphide powder and powdered graphite is 0.8-1.2 μ m, wherein, the volume ratio of molybdenumdisulphide powder and powdered graphite is 1.2, and the volume sum of molybdenumdisulphide powder and powdered graphite is 0.04 times of chromium layer volume.
The production method of this galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring comprises following processing step successively:
A) before being plated, the piston ring blank of cast iron matrix deoils clean surface;
B) the piston ring blank is carried out sandblasting, make piston ring blank surface be uniform dark grey look;
C) the piston ring blank is put into carried out reverse etching in the electroplate liquid one: electroplate liquid one is a solvent with water, wherein is dissolved with chromic anhydride 175 grams per liters; Trivalent chromium is less than 10.5 grams per liters in the electroplate liquid one; When carrying out reverse etching, 4 volts of voltages, carry out etching at 55-65 ℃ of degree at 50 seconds time;
D) electroplate in electroplate liquid two: electroplate liquid two is a solvent with water, be dissolved with chromic anhydride 250 grams per liters, sulfuric acid 2.5 grams per liters are that 1.2 molybdenumdisulphide powder and powdered graphite add in the electroplate liquid with particle diameter 0.8-1.2 μ m, volume ratio, add-on is 20 grams per liters, uniform mixing; Trivalent chromium is less than 10.5 grams per liters in the requirement electroplate liquid two, and iron ion is less than 10.5 grams per liters; Piston ring blank after the reverse etching is put into electroplate liquid two to be electroplated, temperature 60-65 during plating ℃, electric current 1200-1600 ampere, in the electroplating process, constantly bubbling air stirs, and makes molybdenumdisulphide powder and powdered graphite can keep being dispersed in the electroplate liquid two; The thickness that is electroplated to the chromium layer that piston ring blank periphery forms is 0.18mm, becomes the work in-process piston ring, in this work in-process piston ring, and the volume of molybdenumdisulphide powder and powdered graphite and be 0.035 times of chromium layer volume;
E) the work in-process piston ring is put into abrading cylinder and add abrasive sand and carry out break-in, break-in to chromium layer thickness is 0.15mm, and the surperficial rounding of chromium layer, level and smooth becomes the finished product piston ring simultaneously.
Claims (2)
1. galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring, comprise cast iron basic unit, be provided with the chromium layer of thickness 0.08-0.15mm at the outer round surface of cast iron basic unit, it is characterized in that: homodisperse has molybdenumdisulphide powder and powdered graphite in the described chromium layer, the particle diameter of molybdenumdisulphide powder and powdered graphite is 0.7-1.5 μ m, wherein, the volume ratio of molybdenumdisulphide powder and powdered graphite is 0.5-1.5, and the volume sum of molybdenumdisulphide powder and powdered graphite is 0.025-0.05 a times of chromium layer volume.
2. the production method of galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring as claimed in claim 1 comprises following processing step successively:
A) before being plated, the piston ring blank of cast iron matrix deoils clean surface;
B) the piston ring blank is carried out sandblasting, make piston ring blank surface be uniform dark grey look;
C) the piston ring blank is put into carried out reverse etching in the electroplate liquid one: electroplate liquid one is a solvent with water, wherein is dissolved with chromic anhydride 150-200 grams per liter; Trivalent chromium is less than 10.5 grams per liters in the electroplate liquid one; When carrying out reverse etching, voltage 3-5 volt, carries out etching at 55-65 ℃ of degree at time 35-65 second;
D) electroplate in electroplate liquid two: electroplate liquid two is a solvent with water, be dissolved with chromic anhydride 200-400 grams per liter, sulfuric acid 1.2-3.5 grams per liter is in the molybdenumdisulphide powder and powdered graphite adding electroplate liquid of 0.5-1.5 with particle diameter 0.7-1.5 μ m, volume ratio, add-on is the 5-25 grams per liter, uniform mixing; Trivalent chromium is less than 10.5 grams per liters in the requirement electroplate liquid two, and iron ion is less than 10.5 grams per liters; Piston ring blank after the reverse etching is put into electroplate liquid two to be electroplated, temperature 57-65 during plating ℃, electric current 800-1800 ampere, in the electroplating process, constantly bubbling air stirs, and makes molybdenumdisulphide powder and powdered graphite can keep being dispersed in the electroplate liquid two; The thickness that is electroplated to the chromium layer that piston ring blank periphery forms is 0.10-0.20mm, becomes the work in-process piston ring, in this work in-process piston ring, and the volume of molybdenumdisulphide powder and powdered graphite and be 0.025-0.05 times of chromium layer volume;
E) the work in-process piston ring is put into abrading cylinder and add abrasive sand and carry out break-in, break-in to chromium layer thickness is 0.08-0.15mm, and the surperficial rounding of chromium layer, level and smooth becomes the finished product piston ring simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100227486A CN101328603B (en) | 2008-07-28 | 2008-07-28 | Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100227486A CN101328603B (en) | 2008-07-28 | 2008-07-28 | Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101328603A CN101328603A (en) | 2008-12-24 |
| CN101328603B true CN101328603B (en) | 2010-07-14 |
Family
ID=40204603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100227486A Expired - Fee Related CN101328603B (en) | 2008-07-28 | 2008-07-28 | Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101328603B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703943B (en) * | 2012-05-23 | 2016-04-13 | 江苏仪征金派内燃机配件有限公司 | A kind of production method of nanocomposite surface piston ring |
| CN103938235B (en) * | 2014-04-29 | 2016-04-27 | 南通迪施有限公司 | The asymmetric chrome-plated process of steel piston annular groove |
| CN105177640A (en) * | 2015-08-04 | 2015-12-23 | 重庆立道表面技术有限公司 | Efficient high-performance and high-hardness chromium plating process |
| DE102017221606A1 (en) | 2017-11-30 | 2019-06-06 | Federal-Mogul Burscheid Gmbh | piston ring |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681817A (en) * | 1984-12-24 | 1987-07-21 | Kabushiki Kaisha Riken | Piston ring |
-
2008
- 2008-07-28 CN CN2008100227486A patent/CN101328603B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681817A (en) * | 1984-12-24 | 1987-07-21 | Kabushiki Kaisha Riken | Piston ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101328603A (en) | 2008-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102877977B (en) | The coated power cylinder components of diesel engine | |
| CN102517536B (en) | Novel plasma powder core wire inner wall spraying method | |
| CN101328603B (en) | Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof | |
| CN101389886B (en) | Sliding member | |
| CN101929405B (en) | Piston ring of chrome-base ceramic composite plating layer | |
| CN111148892A (en) | Cast iron cylinder sleeve and internal combustion engine | |
| HRP950055A2 (en) | Method of manufacturing a cylinder liner and such a liner | |
| KR100271841B1 (en) | Second pressure ring for aluminum cylinders and its producing method | |
| US20060151329A1 (en) | Plating layer for sliding portion and method for forming the same | |
| CN101831222A (en) | Abrasion-resistant and friction-reducing emulsion and preparation method for spraying same on surface of soft metal | |
| JPH0765683B2 (en) | Combination of cylinder and piston ring | |
| DE102008036996B4 (en) | Sliding and / or counter ring of a drive seal | |
| WO1992007117A1 (en) | Steel component with electro-deposited anti-corrosion layer | |
| JPH05331694A (en) | Composite plated nonferrous metallic material for machine structure | |
| JPS61144469A (en) | Sliding surface opposed structure | |
| Klingenberg et al. | Practical applications of ion beam and plasma processing for improving corrosion and wear protection | |
| JP3180921B2 (en) | Cylinder for internal combustion engine using alcohol fuel | |
| CN201225203Y (en) | Surface enhanced antifriction piston ring | |
| CN114985238A (en) | Wear-resistant gasket of graphene composite lubricating coating and production process thereof | |
| WO2019015818A1 (en) | Piston ring with shot-peened running-in layer and method for the production thereof | |
| CN106151140B (en) | A kind of Environment-friendlywear-resistant wear-resistant spool and hydraulic valve | |
| JP2576108B2 (en) | Cylinder liner | |
| CN201554563U (en) | Spot porous chrome plated cylinder liner | |
| JPS583950A (en) | Ohc type valve system | |
| CN201661376U (en) | Piston ring I-shaped oil control ring with peripheral composite chromium electroplating layer and ceramic particle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: JiangSu Yizheng Jinpai Internal Combustion Engine Components Co., Ltd. Assignor: Wei Qingsong|Wu Shenqing Contract record no.: 2012320000080 Denomination of invention: Galvanic deposit chromium-based two-component particle composite reinforced surface treating piston ring and production method thereof Granted publication date: 20100714 License type: Exclusive License Open date: 20081224 Record date: 20120220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20140728 |
|
| EXPY | Termination of patent right or utility model |