CN204493002U - The diamond-like coating piston ring of a kind of long life - Google Patents
The diamond-like coating piston ring of a kind of long life Download PDFInfo
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- CN204493002U CN204493002U CN201520128742.2U CN201520128742U CN204493002U CN 204493002 U CN204493002 U CN 204493002U CN 201520128742 U CN201520128742 U CN 201520128742U CN 204493002 U CN204493002 U CN 204493002U
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- diamond
- coating
- piston ring
- chromium metal
- tungsten
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Abstract
The utility model discloses the diamond-like coating piston ring of a kind of long life, first the thin layers of chrome of one deck is deposited at piston ring substrate cylindrical, on the periphery of thin layers of chrome, deposit the diamond-like rock layers that one deck contains tungsten and chromium metal again, finally deposit the pure diamond-like coating of one deck at the diamond-like rock layers periphery mixing tungsten and chromium metal.By adding tungsten in the intermediate layer and chromium metal makes diamond-like coating internal stress greatly reduce, improve the combination force of coating, piston ring diamond-like coating can be accomplished thicker, the working life of piston ring extends greatly.
Description
One, technical field:
The utility model relates to a kind of piston ring, is specifically related to the diamond-like coating piston ring of a kind of long life, belongs to piston ring surface processing technology field.
Two, background technique:
Along with more and more stricter to the requirement of automobile fuel ecomomy index and reliability index, the frictional work loss how reducing motor car engine and the working life of improving motor are the important topics that current motor producer is studied.Piston ring is the core component of motor, its working method is realized by the sliding friction between piston ring and cylinder inner wall, to have in the course of the work a large amount of frictional work loss and piston ring working surface very easily wear and tear, so need to reduce the frictional loss of piston ring and the cylindrical wear extent of piston ring as far as possible.
Diamond-like coating has the feature such as high abrasion, low coefficient of friction, if accomplish in the surface treatment of piston ring by diamond-like coating, effectively will reduce the frictional work loss of piston ring and greatly improve the wear resistance of piston ring.But diamond-like coating possesses larger internal stress, the thicker internal stress of coating is larger, the combination force of coating will be affected, so diamond-like coating cannot do thick under normal circumstances, generally can only control within 3 μm, the endurance quality of the too thin piston ring of coating is affected, and cannot realize the long life.
Three, summary of the invention:
The purpose of this utility model is that solving diamond-like coating internal stress cannot do thick problem greatly, provides a kind of high-performance piston ring possessing long life and low coefficient of friction.
In order to solve the problem, diamond-like coating piston ring of the present utility model comprises piston ring substrate, and on the periphery of matrix, be provided with the ultra-thin layers of chrome of one deck, be provided with the diamond-like rock layers that one deck mixes tungsten and chromium metal in the outside of ultra-thin layers of chrome again, be finally provided with pure diamond-like coating at the cylindrical of the diamond-like rock layers of mixing tungsten and chromium metal.Be characterized in: the thin layers of chrome thickness range of innermost transition: 0.5 ~ 1 μm, hardness range: 700 ~ 1200HV; The thickness range of the diamond-like rock layers of tungsten and chromium metal is mixed in mesosphere: 2 ~ 5 μm, hardness range: 1800 ~ 2200HV; Outmost pure diamond-like coating thickness range: 3 ~ 6 μm, hardness range: 2500 ~ 3300HV.Thin layers of chrome is bond coat, its objective is to activate piston ring basic surface raising layer base combination force; Mesosphere is the diamond-like rock layers of mixing tungsten and chromium metal, namely in diamond-like coating deposition process, mix tungsten and chromium metal simultaneously, its objective is the internal stress that effectively can reduce diamond-like coating by mixing tungsten and chromium metal in diamond-like coating, diamond-like coating can be accomplished thicker; The diamond-like coating of outermost disc is that hardness is high, the better pure diamond-like coating of wear resistance.Total is is piston ring substrate from inside to outside successively, thin layers of chrome, the diamond-like rock layers of mixing tungsten and chromium metal and pure diamond-like rock layers, and hardness raises the associativity forming hardness gradient distribution and be more conducive to Bulk coat gradually from inside to outside.
The utility model coating structure efficiently solves diamond-like coating stress can not do thick problem greatly, thus achieves the piston ring possessing and grow durable and low coefficient of friction.
Four, accompanying drawing explanation
Fig. 1 is schematic cross-section of the present utility model.
Five, mode of execution
See Fig. 1, comprise piston ring substrate 1, thin layers of chrome 2 on matrix 1 periphery, then the diamond-like rock layers 3 of mixing tungsten and chromium metal is provided with on the periphery of thin layers of chrome 2, and the pure diamond-like rock layers 4 on the periphery of diamond-like rock layers 3 mixing tungsten and chromium metal.
First physical vapor deposition mode is utilized first to deposit the thin layers of chrome of one deck at piston ring surface, the mode that recycling physical vapor deposition and chemical vapor deposition combine deposits the diamond-like rock layers that one deck mixes tungsten and chromium metal simultaneously, deposits the pure diamond-like coating of one deck utilizing chemical vapor deposition mode.Whole coating bond is good, excellent performance, meets the performance that piston ring possesses long lifetime and low friction.
Claims (1)
1. a long life diamond-like coating piston ring, comprise piston ring substrate (1), the thin layers of chrome (2) of matrix (1) periphery, the diamond-like rock layers (3) of mixing tungsten and chromium metal of thin layers of chrome (2) periphery and mixing the pure diamond-like coating (4) of diamond-like rock layers (3) periphery of tungsten and chromium metal, it is characterized in that: thin layers of chrome (2) thickness range: 0.5 ~ 1 μm, hardness range: 700 ~ 1200HV, mix diamond-like rock layers (3) thickness range of tungsten and chromium metal: 2 ~ 5 μm, hardness range: 1800 ~ 2200HV, pure diamond-like coating (4) thickness range: 3 ~ 6 μm, hardness range: 2500 ~ 3300HV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128742.2U CN204493002U (en) | 2015-03-04 | 2015-03-04 | The diamond-like coating piston ring of a kind of long life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128742.2U CN204493002U (en) | 2015-03-04 | 2015-03-04 | The diamond-like coating piston ring of a kind of long life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493002U true CN204493002U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520128742.2U Active CN204493002U (en) | 2015-03-04 | 2015-03-04 | The diamond-like coating piston ring of a kind of long life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041503A (en) * | 2015-06-25 | 2015-11-11 | 安庆帝伯格茨活塞环有限公司 | Diamond-like coating piston ring with long service life |
-
2015
- 2015-03-04 CN CN201520128742.2U patent/CN204493002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041503A (en) * | 2015-06-25 | 2015-11-11 | 安庆帝伯格茨活塞环有限公司 | Diamond-like coating piston ring with long service life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |