CN107524539A - A kind of wet cylinder liner for improving anti-cavitation pitting ability - Google Patents
A kind of wet cylinder liner for improving anti-cavitation pitting ability Download PDFInfo
- Publication number
- CN107524539A CN107524539A CN201710546408.2A CN201710546408A CN107524539A CN 107524539 A CN107524539 A CN 107524539A CN 201710546408 A CN201710546408 A CN 201710546408A CN 107524539 A CN107524539 A CN 107524539A
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- CN
- China
- Prior art keywords
- cylinder liner
- induction hardening
- wet cylinder
- cavitation pitting
- region
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to technical field of engines.A kind of wet cylinder liner for improving anti-cavitation pitting ability, including a wet cylinder liner main body, wet cylinder liner body outer surface are provided with a circle induction hardening region, and induction hardening region is an induction hardening region using induction hardening PROCESS FOR TREATMENT.Traditional wet cylinder liner outer surface is not surface-treated and special enhancement measures, and using the method for surface induction hardening, Surface hardening treatment, without upgrading material, the anti-cavitation pitting ability for the wet cylinder liner that can deduct a percentage creatively are carried out to wet cylinder liner by the present invention.It is more convenient compared with other enhancement measures, decrease the cost that upgrading material is improved.The outer surface of this patent only wet cylinder liner carries out cure process, on the one hand, relative to upgrading material and the method for increase specific coatings, difficulty of processing is low, and the Operational preparation time is short, on the other hand, Surface hardening treatment is carried out for the more serious outer surface of cavitation pitting, with strong points, cost is low.
Description
Technical field
The present invention relates to technical field of engines, and in particular to a kind of cylinder sleeve.
Background technology
For wet cylinder liner, when piston is reciprocating in cylinder-bore, continuous blow cylinder wall, cylinder sleeve is caused to produce
Vibration and chatter.This vibration and the result of chatter, will make relatively slow this of absorption flowing velocity on liner backs
One layer of coolant produces high temperature, and quickly forms bubble.Two features of the bubble in physics：It is first, adiabatic；Second, preceding
Flutter in follow-up explosion and produce strong corrosiveness, this phenomenon long-term existence just generates cavitation pitting.
The content of the invention
It is an object of the invention to provide a kind of wet cylinder liner for improving anti-cavitation pitting ability, to solve above-mentioned technical problem.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of wet cylinder liner for improving anti-cavitation pitting ability, including a wet cylinder liner main body, it is characterised in that the wet type cylinder
Cover body outer surface and be provided with a circle induction hardening region,
The induction hardening region is an induction hardening region using induction hardening PROCESS FOR TREATMENT.
First, traditional wet cylinder liner outer surface does not have surface treatment and special enhancement measures, only relies on the choosing to material
Select, the material to be got a promotion by selection intensity strengthens the intensity of wet cylinder liner, and the present invention creatively uses surface induction
The method of hardening, Surface hardening treatment is carried out to wet cylinder liner, without upgrading material, the anti-cavitation pitting energy of wet cylinder liner can be lifted
Power.It is more convenient compared with other enhancement measures, decrease the cost that upgrading material is improved.
Secondly, the outer surface of this patent only wet cylinder liner locally carries out cure process, on the one hand, relative to whole outer surface
The method of cure process, process time is short, and on the other hand, the outer surface that position most easily occurs for cavitation pitting is carried out at Surface hardened layer
Reason, with strong points, cost is low.
The induction hardening mode is first induction hardening machining center region, then continues induction hardening processing side to external diffusion
Edge region, the central area induction hardening thickness are more than fringe region.Make it possible to lay special stress on protecting the region of easy cavitation pitting, simultaneously
Save the cost of induction hardening technique processing.
The induction hardening region is arranged at position corresponding with cylinder body water jacket on liner backs.The sensing of the present invention
Harden and bel not applied to whole wet cylinder liner body outer surface, and be disposed on easy cavitation pitting region, lay special stress on protecting the area of easy cavitation pitting
Domain.Possess the function of protecting easy cavitation pitting region, while saved the cost of induction hardening technique processing again.
The induction hardening technique is impewdance matching hardening process.Impewdance matching hardening process directly adds in liner backs
Heat, firing rate is fast, and the thermal efficiency is high, is not overall heating, and deformation is small, while has significantly to hardness and anti-cavitation pitting ability
Lifting.
The thickness in the induction hardening region is set to 2~5mm.Ensure enough thickness to prevent cavitation pitting.
Hardness is set to HRC58 ± 3 after the processing in the induction hardening region.Improved after overcure compared with original hardness
About one times.
Brief description of the drawings
Fig. 1 is the part-structure schematic diagram of the present invention.
Embodiment
In order to which the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, with reference to
It is specifically illustrating, the present invention is expanded on further.
Shown in reference picture 1, a kind of wet cylinder liner for improving anti-cavitation pitting ability, including a wet cylinder liner main body 1, wet cylinder liner
The outer surface of main body 1 is provided with a circle induction hardening region 2, and induction hardening region 2 is a sense using induction hardening PROCESS FOR TREATMENT
Answer hardening region 2.First, traditional wet cylinder liner outer surface does not have surface treatment and special enhancement measures, only relies on to material
Selection, the material to be got a promotion by selection intensity strengthens the intensity of wet cylinder liner, and the present invention creatively uses surface
The method of induction hardening, Surface hardening treatment is carried out to wet cylinder liner, without upgrading material, the anti-cave of wet cylinder liner can be lifted
Erosion ability.It is more convenient compared with other enhancement measures, decrease the cost that upgrading material is improved.Secondly, this patent is only
The outer surface of wet cylinder liner locally carries out cure process, on the one hand, relative to the method for whole outer surface cure process, during processing
Between it is short, on the other hand, for cavitation pitting most easily occur position outer surface carry out Surface hardening treatment, with strong points, cost is low.
A kind of wet cylinder liner for improving anti-cavitation pitting ability, the first step, makes wet cylinder liner main body 1, second step, to wet type cylinder
The outer surface of set main body 1 is finished, the 3rd step, is carried out induction hardening processing in the outer surface of wet cylinder liner main body 1, is formed
Induction hardening region 2.This patent induction hardening is completed after outer Surface Finishing, and machining difficulty with that unanimously, can have in the past
Effect avoids machining the increase of difficulty.Finishing mode is to pass through precision turning or fine grinding in the outer surface of wet cylinder liner main body 1,
After polishing, surface spikes are removed.Finishing can cause induction hardening region 2 preferably to lift bonding strength with outer surface.Sense
It is first induction hardening machining center region that mode, which should be hardened, then continues induction hardening processing fringe region, center to external diffusion
Induction hardening thickness in domain is more than fringe region.Make it possible to lay special stress on protecting the region of easy cavitation pitting, while save induction hardening work
The cost of skill processing.
Induction hardening region 2 is arranged at position corresponding with cylinder body water jacket on liner backs.The sensing of the present invention is hard
Change and bel not applied to the whole outer surface of wet cylinder liner main body 1, and be disposed on easy cavitation pitting region, lay special stress on protecting the area of easy cavitation pitting
Domain.Possess the function of protecting easy cavitation pitting region, while saved the cost of induction hardening technique processing again.
Induction hardening technique is impewdance matching hardening process.Impewdance matching hardening process directly heats in liner backs,
Firing rate is fast, and the thermal efficiency is high, is not overall heating, and deformation is small, while has to hardness and anti-cavitation pitting ability and significantly carry
Rise.
The thickness in induction hardening region 2 is set to 2~5mm.Ensure enough thickness to prevent cavitation pitting.
Specific embodiment 1：The thickness in induction hardening region 2 have edge inwardly gradually be incremented by, the section of induction hardening region 2 by
Top to bottm form respectively the first arc area, the second arc area and the 3rd arc area.First arc area and the 3rd arc
The central point in shape region is located at outside wet cylinder liner main body 1, and the central point of the second arc area is located in wet cylinder liner main body 1
Portion.The cavitation pitting of cylinder sleeve is often the form that can form local focal, and the shape of this thick middle thin edge is made in induction hardening region 2
Formula so that focal zone is laid special stress on protecting in centre, while the radian of the second arc area can come down in torrents toward edge and converge bubble, avoid gas
Together, the radian that the first arc area and the second arc area are formed can avoid bubble from flowing back, and delay cavitation pitting speed for bubble aggregation.
Hardness is set to HRC58 ± 3 after the processing in induction hardening region 2.Improved about compared with original hardness after overcure
One times.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of wet cylinder liner for improving anti-cavitation pitting ability, including a wet cylinder liner main body, it is characterised in that the wet cylinder liner
Body outer surface is provided with a circle induction hardening region,
The induction hardening region is an induction hardening region using induction hardening PROCESS FOR TREATMENT.
A kind of 2. wet cylinder liner for improving anti-cavitation pitting ability according to claim 1, it is characterised in that the induction hardening
Region is arranged at position corresponding with cylinder body water jacket on liner backs.
A kind of 3. wet cylinder liner for improving anti-cavitation pitting ability according to claim 1, it is characterised in that the induction hardening
Technique is impewdance matching hardening process.
A kind of 4. wet cylinder liner for improving anti-cavitation pitting ability according to claim 1, it is characterised in that the induction hardening
The thickness in region is set to 2~5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546408.2A CN107524539A (en) | 2017-07-06 | 2017-07-06 | A kind of wet cylinder liner for improving anti-cavitation pitting ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546408.2A CN107524539A (en) | 2017-07-06 | 2017-07-06 | A kind of wet cylinder liner for improving anti-cavitation pitting ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107524539A true CN107524539A (en) | 2017-12-29 |
Family
ID=60748265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710546408.2A Withdrawn CN107524539A (en) | 2017-07-06 | 2017-07-06 | A kind of wet cylinder liner for improving anti-cavitation pitting ability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107524539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676221A (en) * | 2019-01-23 | 2019-04-26 | 广州中船文冲船坞有限公司 | A kind of welding method of main engine jacket package zine plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250960Y (en) * | 1996-01-05 | 1997-04-02 | 郭世雄 | High-strength hardening apparatus for surface of steel-casting |
| JPH09209820A (en) * | 1996-01-31 | 1997-08-12 | Teikoku Piston Ring Co Ltd | Cylinder liner and its manufacture |
| CN101613788A (en) * | 2009-07-30 | 2009-12-30 | 河南省中原内配股份有限公司 | Processing technique of local deformation of cylinder jacket |
| CN101713017A (en) * | 2009-10-22 | 2010-05-26 | 扬州神驰缸套有限公司 | Method for quenching engine cylinder jackets |
| CN203285556U (en) * | 2013-04-18 | 2013-11-13 | 马勒技术投资(中国）有限公司 | Engine cylinder sleeve with strong cavitation erosion resistance |
| CN105543449A (en) * | 2015-12-31 | 2016-05-04 | 浙江增洲造船有限公司 | Surface quenching technology of marine cylinder sleeve |
-
2017
- 2017-07-06 CN CN201710546408.2A patent/CN107524539A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250960Y (en) * | 1996-01-05 | 1997-04-02 | 郭世雄 | High-strength hardening apparatus for surface of steel-casting |
| JPH09209820A (en) * | 1996-01-31 | 1997-08-12 | Teikoku Piston Ring Co Ltd | Cylinder liner and its manufacture |
| CN101613788A (en) * | 2009-07-30 | 2009-12-30 | 河南省中原内配股份有限公司 | Processing technique of local deformation of cylinder jacket |
| CN101713017A (en) * | 2009-10-22 | 2010-05-26 | 扬州神驰缸套有限公司 | Method for quenching engine cylinder jackets |
| CN203285556U (en) * | 2013-04-18 | 2013-11-13 | 马勒技术投资(中国）有限公司 | Engine cylinder sleeve with strong cavitation erosion resistance |
| CN105543449A (en) * | 2015-12-31 | 2016-05-04 | 浙江增洲造船有限公司 | Surface quenching technology of marine cylinder sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676221A (en) * | 2019-01-23 | 2019-04-26 | 广州中船文冲船坞有限公司 | A kind of welding method of main engine jacket package zine plate |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171229 |