CN206692735U - A kind of face coat structure of automobile piston rings - Google Patents
A kind of face coat structure of automobile piston rings Download PDFInfo
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- CN206692735U CN206692735U CN201720395771.4U CN201720395771U CN206692735U CN 206692735 U CN206692735 U CN 206692735U CN 201720395771 U CN201720395771 U CN 201720395771U CN 206692735 U CN206692735 U CN 206692735U
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- Prior art keywords
- vacuum
- polishing layer
- layer
- piston rings
- automobile piston
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Abstract
The utility model provides a kind of face coat structure of automobile piston rings, including metal base, vacuum ion-nitriding layer and the first polishing layer, vacuum coating DLC coatings and the second polishing layer, second polishing layer is on vacuum coating DLC composite coatings, vacuum coating DLC composite coatings are on polishing layer 1, first polishing layer is above vacuum ion-nitriding layer, vacuum ion-nitriding layer face on metal base.The hardness of the utility model automobile piston rings coating is lifted to more than HV1600 by HV1500, coefficient of friction relatively before 0.5 lifting to 0.2, the effect of factors above, fuel efficiency and the qualities such as durability degree of product get a promotion.
Description
[technical field]
The utility model belongs to the parts of automobile engine, and in particular to a kind of piston ring of automobile engine surface knot
Structure.
[background technology]
Traditional automobile piston rings coating structure plates CrN or DLC composite coatings on base material, and wherein CrN films use magnetic control
Sputtering plating, DLC composite coatings are CVD or PVD produces.Coating structure above has the following disadvantages：
1. the CrN coatings being coated with, coefficient of friction is more than 1.0, applies the fuel efficiency on automobile piston rings low.
2. the DLC composite coatings being coated with, between coefficient of friction 0.5-1.0, but its integral hardness is less than HV1500, applies
When on automobile piston rings, durability is inadequate.Coefficient of friction can be because the abrasion of film layer increases, the speed that its fuel efficiency declines
It hurry up.
[content of the invention]
The technical problems to be solved in the utility model is to provide a kind of integral hardness and is more than more than HV1600, and coefficient of friction is small
In 0.2 automobile piston rings coating structure.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is a kind of 1. tables of automobile piston rings
Topcoat constructions, it is characterised in that including metal base, vacuum ion-nitriding layer and the first polishing layer, vacuum coating DLC coatings
And second polishing layer, the second polishing layer is on vacuum coating DLC composite coatings, and vacuum coating DLC composite coatings are in polishing layer 1
Above, the first polishing layer is above vacuum ion-nitriding layer, vacuum ion-nitriding layer face on metal base.
Further, vacuum ion-nitriding layer depth is 15-25um.
Further, the thickness of vacuum coating DLC composite coatings is 0.8-2.5um, and nanometer Vickers hardness is more than HV1800.
Further, vacuum coating DLC composite coatings mix the elements such as Si, the membrane system knot of vacuum coating DLC composite coatings
Structure is Cr-CrC-CrSiC-SiCH from inside to outside.
Further, the coefficient of friction of the first polishing layer is less than 0.5；
Further, the coefficient of friction of the second polishing layer is less than 0.2；
Further, polishing layer uses polishing mode to roll polishing light for shape star.
The hardness of the utility model automobile piston rings coating is lifted to more than HV1600 by HV1500, and coefficient of friction is than before
0.5 lifting to 0.2, the effect of factors above, fuel efficiency and the qualities such as durability degree of product get a promotion.
[brief description of the drawings]
Fig. 1 is the schematic diagram of the utility model embodiment piston of automobile ring structure.
Wherein, 1 is metal base, and 2 be vacuum ion-nitriding layer, and 3 be the first polishing layer, and 4 be the compound paintings of vacuum coating DLC
Layer, 5 be the second polishing layer.
[embodiment]
As shown in figure 1, including metal base 1, vacuum ionic oozes the utility model embodiment automobile piston rings coating structure
Nitrogen layer 2, the first polishing layer 3, vacuum coating DLC composite coatings 4, the second polishing layer 5.
Outermost layer is the second polishing layer 5, and for the second polishing layer 5 on vacuum coating DLC coatings 4, vacuum coating DLC is compound
Coating 4 is on the first polishing layer 3, and the first polishing layer 3 is above vacuum ion-nitriding layer 2, and vacuum ion-nitriding layer 2 is in gold
Belong to above base material 1.
The utility model embodiment automobile piston rings face coat structure, is completed by following steps：
101st, workpiece is placed into the vacuum drying oven of vacuum ion-nitriding, argon gas and methane is filled with vacuum chamber；
102nd, oozed by the way of vacuum ion-nitriding in the substrate surface processing ion nitriding layer of workpiece by vacuum ionic
Nitrogen equipment produces, and working gas is argon gas and methane, and vacuum 0.1-10Pa during nitriding, methane is filled with speed 10-70sccm, work
Part biases 120-200V, dutycycle 30-70%；
103rd, polishing light mode is rolled using planet to polish on the workpiece after glow discharge nitriding；
104th, vacuum coating DLC composite coatings are coated with the first polishing layer using intermediate frequency non-balance magnetically controlled sputter mode,
Vacuum coating DLC composite coatings are Cr-CrC-CrSiC-SiCH containing element, the film structure of coating from inside to outside such as Si.
105th, polished using planet rolling polishing light mode on the workpiece of machined vacuum coating DLC composite coatings.
Wherein, vacuum ion-nitriding can increase the hardness of base material, make the integral hardness of coating be increased；First polishing
Layer can increase the brilliant white layer for dispelling vacuum ion-nitriding layer, while reduce the coefficient of friction of workpiece surface, reduce vacuum coating DLC
The difficulty that composite coating polishes after being coated with.
In this coating structure, the thickness 15-25um of nitriding layer, the coefficient of friction of the first polishing layer is less than Ra0.5, Vacuum Deposition
Film DLC composite coating thickness 0.8-2.5um, the coefficient of friction of the second polishing layer are less than Ra0.2.
The utility model above example has advantages below compared to prior art：
Compared to existing single DLC coatings or CrN coatings, using the coating structure of MULTILAYER COMPOSITE, make coating hardness higher, rub
It is smaller to wipe coefficient.Penetrated into using Si and be coated with DLC composite coatings, its hardness is by HV1500 liftings before to more than HV1600.With
The effect of upper factor, it is effectively increased the durability and fuel efficiency of piston ring.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.Not
On the premise of departing from the spirit and scope of the utility model, various changes and modifications are also had, these changes and improvements are both fallen within will
Ask in the scope of the utility model of protection.
Claims (7)
1. the face coat structure of a kind of automobile piston rings, it is characterised in that including metal base, vacuum ion-nitriding layer and
One polishing layer, vacuum coating DLC coatings and the second polishing layer, the second polishing layer is on vacuum coating DLC composite coatings, vacuum
Plated film DLC composite coatings are on polishing layer 1, and the first polishing layer is above vacuum ion-nitriding layer, vacuum ion-nitriding layer
Face on metal base.
2. the face coat structure of automobile piston rings according to claim 1, it is characterised in that vacuum ion-nitriding layer depth
Spend for 15-25um.
3. the face coat structure of automobile piston rings according to claim 1, it is characterised in that vacuum coating DLC is compound
The thickness of coating is 0.8-2.5um, and nanometer Vickers hardness is more than HV1800.
4. the face coat structure of automobile piston rings according to claim 3, it is characterised in that vacuum coating DLC is compound
Coating mixes the elements such as Si, and the film structure of vacuum coating DLC composite coatings is Cr-CrC-CrSiC-SiCH from inside to outside.
5. the face coat structure of automobile piston rings according to claim 1, it is characterised in that the friction of the first polishing layer
Coefficient is less than 0.5.
6. the face coat structure of automobile piston rings according to claim 1, it is characterised in that the friction of the second polishing layer
Coefficient is less than 0.2.
7. the face coat structure of the automobile piston rings according to claim 5 or 6, it is characterised in that polishing layer is used
Polishing mode is that shape star rolls polishing light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720395771.4U CN206692735U (en) | 2017-04-14 | 2017-04-14 | A kind of face coat structure of automobile piston rings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720395771.4U CN206692735U (en) | 2017-04-14 | 2017-04-14 | A kind of face coat structure of automobile piston rings |
Publications (1)
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| CN206692735U true CN206692735U (en) | 2017-12-01 |
Family
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| CN201720395771.4U Active CN206692735U (en) | 2017-04-14 | 2017-04-14 | A kind of face coat structure of automobile piston rings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023362A (en) * | 2018-07-09 | 2018-12-18 | 中国人民解放军空军勤务学院 | A kind of hydraulic valve stem surface impact-resistant abrasion-proof lubricates composite coating and preparation method thereof |
| CN109957764A (en) * | 2017-12-14 | 2019-07-02 | 中国科学院宁波材料技术与工程研究所 | Water fluid environment CrSiC composite coating and the preparation method and application thereof |
-
2017
- 2017-04-14 CN CN201720395771.4U patent/CN206692735U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109957764A (en) * | 2017-12-14 | 2019-07-02 | 中国科学院宁波材料技术与工程研究所 | Water fluid environment CrSiC composite coating and the preparation method and application thereof |
| CN109957764B (en) * | 2017-12-14 | 2021-04-02 | 中国科学院宁波材料技术与工程研究所 | CrSiC composite coating for water-based liquid environment and preparation method and application thereof |
| CN109023362A (en) * | 2018-07-09 | 2018-12-18 | 中国人民解放军空军勤务学院 | A kind of hydraulic valve stem surface impact-resistant abrasion-proof lubricates composite coating and preparation method thereof |
| CN109023362B (en) * | 2018-07-09 | 2020-12-29 | 中国人民解放军空军勤务学院 | Impact-resistant wear-resistant lubricating composite coating on surface of hydraulic valve rod and preparation method thereof |
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