CN101644206A - Internal-combustion engine piston ring - Google Patents
Internal-combustion engine piston ring Download PDFInfo
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- CN101644206A CN101644206A CN200910182353A CN200910182353A CN101644206A CN 101644206 A CN101644206 A CN 101644206A CN 200910182353 A CN200910182353 A CN 200910182353A CN 200910182353 A CN200910182353 A CN 200910182353A CN 101644206 A CN101644206 A CN 101644206A
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- combustion engine
- internal
- piston ring
- composite
- engine piston
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses an internal-combustion engine piston ring, comprising a gaseous ring and the downside of the gaseous ring is provided with composite plating, wherein the thickness T of the composite plating is not less than 5mu m and not more than 30mu m, the hardness is 800-1600HV0.1, the friction coefficient is 0.05-0.3, the composite plating comprises nickel-based composite, metal nitride, metal carbide or ceramic composite. The invention can meet the demand of promoting the explosion pressure of the internal-combustion engine, play an important role in realizing environment protection emission, increase the overall system performance and prolong the service life; the invention has simple structure, is easy to realize and is applicable to mass assembly line production; the quality and the processing precision of the product are better than the product prepared by the prior art and the method of the invention belongs to low energy consumption manufacturing technology; the method of the invention can improve the working environment of workers and reduce the pollution to the environment, thus the composite plating technology is more environmentally friendly than the technology of chromium-plating; in addition, the technology can realize large thickness, high temperature hardness, high wear resistance and low friction coefficient of the product.
Description
Technical field
The present invention relates to a kind of piston ring, is the piston ring that downside that a kind of internal-combustion engine is used is coated with composite deposite specifically.
Background technique
The piston ring group is the key components and parts of internal-combustion engine, and the piston ring group comprises compression ring and oil ring; Wherein compression ring mainly seals, its at high temperature cylindrical and cylinder bore wall do rubbing action, the chatter friction is done to impact in end face and piston groove side, therefore needs good wear resistance.The material of piston ring matrix has alloy cast iron, spheroidal graphite cast iron, carbon steel, stainless steel etc., and some cylindricals are made plating, infiltration is handled to increase its wear resistance, and the whole outer surface of some piston rings is done the oxidation preservative treatment, and the flash chromium of doing that also has is handled; Anti-corrosive properties oxidation processes or the whole chromium technology of surface plating have been anticorrosion, attractive in appearance and initial stage break-in effect.Flash chromium technology has been slowed down wearing and tearing to a certain extent, but can't have been satisfied the discharging of motor and more long life requirement fully because its chromium layer approaches (thickness is less than 5 μ m).
Along with constantly adding of discharging standards is tight, engine performance is upgraded fast, and its pressure of explosion improves constantly, the piston ring downside, and the one side of promptly bearing HI high impact pressure will be born the enormous impact power under the condition of high temperature.Under abominable like this operating conditions, wearing and tearing fast easily take place in the piston ring downside, so make piston ring intensity reduce and rupture, elastic force descends, sideshake increases and seal failure finally causes the internal-combustion engine cisco unity malfunction, the lost of life, discharging increase.
Summary of the invention
Goal of the invention: the objective of the invention is to overcome problems of the prior art, the piston ring that provides a kind of downside to be coated with composite deposite, it can solve the problem that the piston gas ring downside is not wear-resisting in the prior art, the life-span short, easily lost efficacy.
Technological scheme: in order to solve the problems of the technologies described above, the present invention has adopted following technological scheme,
A kind of internal-combustion engine piston ring comprises compression ring, and the downside of described compression ring is provided with composite deposite.
Among the present invention, the thickness T of described composite deposite: 5 μ m≤T≤30 μ m; Hardness: 800～1600HV
0.1Friction factor: 0.05～0.3.
Among the present invention, described composite deposite is nickel-based compound, metal nitride, metal carbide or ceramic complexes.
Among the present invention, described nickel-based compound is: Ni-based teflon composite, nickel-phosphorus alloy coating, nickel base amorphous alloy coating or nickel base chemical composite deposite.
Among the present invention, described metal nitride is: chromium nitride, titanium nitride, TiAlN, chromium nitride aluminium or TiCN.
Among the present invention, described metal carbide are: titanium carbide, chromium carbide, silicon carbide, Tungsten carbite or nitrogen chromium carbide.
Among the present invention, described ceramic complexes is aluminium oxide ceramics or titanium oxide composite ceramics.
Beneficial effect: (1) the present invention can satisfy the requirement that the internal-combustion engine bursting pressure promotes, and realizing playing significant role aspect the environment protection emission, improves the complete machine performance, increases the service life, and can reach original more than 3 times working life.(2) of the present invention simple in structure, be easy to realize, be suitable for production line production in enormous quantities; But quality of product and machining accuracy are better than prior art, belong to the low power consuming manufacturing technology; Can improve the working environment of workers, reduce environmental pollution.(3) because of Ni-based class composite deposite technology than the more environmental protection of chromium plating technology, and this technology can realize big thickness, high temperature hardness, high wear resistance, low coefficient of friction.The technical program is suitable for the internal-combustion engine of the above discharging of state IV, also can be used in internal-combustion engine and other purposes piston rings of the following discharging of state III.
Description of drawings
Fig. 1 is the compression ring full figure in the piston ring group.
Fig. 2 is the enlarged diagram of analysing and observe of wedge shape compression ring downside coating.
Fig. 3 is the enlarged diagram of analysing and observe of two-sided trapezoidal compression ring downside coating.
Fig. 4 is the enlarged diagram of analysing and observe of undercut slots compression ring downside coating.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done further explanation.
Fig. 1 is the compression ring full figure in the piston ring group.During use, the compression ring 1 of piston ring group is assemblied in the annular groove of piston head, the high-temperature gas of being suppressed impacts, under the effect of chatter power, make downside and piston ring groove side produce high frictional force, therefore the downside serious wear of piston gas ring increases wear-resisting wiping coating at downside, can resist fretting wear.
Embodiment 1:
Fig. 2 is the enlarged diagram of analysing and observe of wedge shape compression ring downside coating.With the nickel-base composite coat piston ring is that the present invention will be described for example.Composite deposite 2 is selected Ni-X-PTFE, as: nickel base chemical composite deposite (Ni-P-Si
3N
4), also can replace with Ni-based teflon composite (Ni-P-PTFE), nickel-phosphorus alloy coating (Ni-P); After machining moulding, wearing layer plating, heat treatment, meticulous machining, surface treatment, reach product.Nickel-base composite coat technical requirements: thickness 20 μ m; Hardness 900HV
0.1Thickness difference is less than 3 μ m, with the friction factor 0.08 of piston ring groove; Can reach 24000 hours the working life of the made piston ring that obtains.
Embodiment 2:
Used composite deposite is nickel base amorphous alloy coating (Ni-Cr-Fe-P) in the present embodiment.Deposit N i-Cr-Fe-P, after machining moulding, electrodeposition cladding, polishing, reach product (herein can with existing other can coating technology substitute).The thickness 30 μ m of composite deposite; Hardness 950HV
0.1Thickness difference is less than 3 μ m.Friction factor 0.2; Can reach 23000 hours the working life of the made piston ring that obtains.
Embodiment 3:
Fig. 3 is the enlarged diagram of analysing and observe of two-sided trapezoidal compression ring downside coating.The piston ring of making compound coating with metal nitride be example the present invention will be described, as chromium nitride (CrN), titanium nitride (TiN), TiAlN (AlTiN), chromium nitride aluminium (ALCrN) or TiCN (TiCN).For example composite deposite 2 is selected chromium nitride CrN; After machining moulding, nitriding treatment, physical vapor deposition, meticulous machining, reach product (herein can with existing other can coating technology substitute).The metal nitride coating technology requires: thickness 25 μ m; Hardness 1400 ± 200HV
0.1Thickness difference is less than 2.5 μ m, with the friction factor 0.12 of austenitic cast iron piston ring carrier; Can reach 22000 hours the working life of the made piston ring that obtains.
Embodiment 4:
Fig. 4 is the enlarged diagram of analysing and observe that cylindrical is partly inlayed compression ring downside coating.The piston ring of doing composite deposite with metal carbide be example the present invention will be described, metal carbide are as titanium carbide (TiC), chromium carbide (CrC), silicon carbide (SiC), Tungsten carbite (WC), nitrogen chromium carbide (CrCN).For example composite deposite 2 selects TiC as composite deposite hard point particle.Electro-deposition TiC, after machining moulding, electrodeposition cladding, polishing, reach product (herein can with existing other can coating technology substitute).The thickness 15 μ m of composite deposite, hardness 1600HV
0.1, thickness difference is less than 3 μ m, friction factor 0.2; Can reach 23500 hours the working life of the made piston ring that obtains.
Embodiment 5:
Used composite deposite is a ceramic complexes coating in the present embodiment, as aluminium oxide ceramics (Al
2O
3) or titanium oxide composite ceramics (BaPbTiO
3).Ni-based ceramic composite coating has remarkable advantages, and it is to use Al
2O
3, SiC, hexagonal boron or silicon nitride particles disperse Ni substrate form.Silicon carbide is used to improve hardness, and silicon nitride and nitrogen increase lubricity through boron particles, adds phosphide in Ni substrate, and coating at high temperature still can be resistance to worn.Choose Al
2O
3As coating, after heat treatment, machining, reach product (herein can with existing other can coating technology substitute).Nickel-base composite coat technical requirements: thickness 15 μ m; Hardness 1500HV
0.1, friction factor 0.11; Can reach 24000 hours the working life of the made piston ring that obtains.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1, a kind of internal-combustion engine piston ring comprises compression ring (1), it is characterized in that: the downside of described compression ring (1) is provided with composite deposite (2).
2, a kind of internal-combustion engine piston ring according to claim 1 is characterized in that: the thickness T of described composite deposite (2): 5 μ m≤T≤30 μ m; Hardness: 800～1600 HV
0.1Friction factor: 0.05～0.3.
3, a kind of internal-combustion engine piston ring according to claim 1 is characterized in that: described composite deposite (2) is nickel-based compound, metal nitride, metal carbide or ceramic complexes.
4, described a kind of internal-combustion engine piston ring according to claim 3, it is characterized in that: described nickel-based compound is: Ni-based teflon composite, nickel-phosphorus alloy coating, nickel base amorphous alloy coating or nickel base chemical composite deposite.
5, described a kind of internal-combustion engine piston ring according to claim 3, it is characterized in that: described metal nitride is: chromium nitride, titanium nitride, TiAlN, chromium nitride aluminium or TiCN.
6, described a kind of internal-combustion engine piston ring according to claim 3, it is characterized in that: described metal carbide are: titanium carbide, chromium carbide, silicon carbide, Tungsten carbite or nitrogen chromium carbide.
7, described a kind of internal-combustion engine piston ring according to claim 3 is characterized in that: described ceramic complexes is aluminium oxide ceramics or titanium oxide composite ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182353A CN101644206A (en) | 2009-07-21 | 2009-07-21 | Internal-combustion engine piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182353A CN101644206A (en) | 2009-07-21 | 2009-07-21 | Internal-combustion engine piston ring |
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| Publication Number | Publication Date |
|---|---|
| CN101644206A true CN101644206A (en) | 2010-02-10 |
Family
ID=41656228
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910182353A Pending CN101644206A (en) | 2009-07-21 | 2009-07-21 | Internal-combustion engine piston ring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534698A (en) * | 2010-12-18 | 2012-07-04 | 马勒国际公司 | Coating And Cast-In Component |
| CN102744930A (en) * | 2012-06-26 | 2012-10-24 | 中国科学院宁波材料技术与工程研究所 | Tough lubricating composite film on surface of air conditioning compressor part and its preparation method |
| CN103465549A (en) * | 2013-07-26 | 2013-12-25 | 天津大学 | Thermal barrier coating including anti-thermal corrosion transition bottom layer and preparation method thereof |
| CN103857823A (en) * | 2011-10-25 | 2014-06-11 | 株式会社Ihi | Piston ring |
| CN104674095A (en) * | 2015-02-11 | 2015-06-03 | 安徽华通铸业有限公司 | Alloy piston material based on casting |
| CN105452736A (en) * | 2013-08-01 | 2016-03-30 | 马勒金属立夫有限公司 | Piston ring and method for manufacturing same |
| CN109723567A (en) * | 2017-10-30 | 2019-05-07 | 丹阳市金长汽车部件有限公司 | A kind of engine piston ring |
-
2009
- 2009-07-21 CN CN200910182353A patent/CN101644206A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534698A (en) * | 2010-12-18 | 2012-07-04 | 马勒国际公司 | Coating And Cast-In Component |
| CN103857823A (en) * | 2011-10-25 | 2014-06-11 | 株式会社Ihi | Piston ring |
| CN103857823B (en) * | 2011-10-25 | 2015-09-30 | 株式会社Ihi | Piston ring |
| US10689743B2 (en) | 2011-10-25 | 2020-06-23 | Ihi Corporation | Piston ring |
| CN102744930A (en) * | 2012-06-26 | 2012-10-24 | 中国科学院宁波材料技术与工程研究所 | Tough lubricating composite film on surface of air conditioning compressor part and its preparation method |
| CN102744930B (en) * | 2012-06-26 | 2015-08-19 | 中国科学院宁波材料技术与工程研究所 | Tough lubrication laminated film of compressor of air conditioner component surface and preparation method thereof |
| CN103465549A (en) * | 2013-07-26 | 2013-12-25 | 天津大学 | Thermal barrier coating including anti-thermal corrosion transition bottom layer and preparation method thereof |
| CN105452736A (en) * | 2013-08-01 | 2016-03-30 | 马勒金属立夫有限公司 | Piston ring and method for manufacturing same |
| CN105452736B (en) * | 2013-08-01 | 2018-02-23 | 马勒金属立夫有限公司 | Piston ring and the method for manufacturing piston ring |
| CN104674095A (en) * | 2015-02-11 | 2015-06-03 | 安徽华通铸业有限公司 | Alloy piston material based on casting |
| CN109723567A (en) * | 2017-10-30 | 2019-05-07 | 丹阳市金长汽车部件有限公司 | A kind of engine piston ring |
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Open date: 20100210 |