CN102878289B - A kind of cylinder sleeve inner wall oil circuit structure and preparation method thereof - Google Patents
A kind of cylinder sleeve inner wall oil circuit structure and preparation method thereof Download PDFInfo
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- CN102878289B CN102878289B CN201210372080.4A CN201210372080A CN102878289B CN 102878289 B CN102878289 B CN 102878289B CN 201210372080 A CN201210372080 A CN 201210372080A CN 102878289 B CN102878289 B CN 102878289B
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Abstract
A kind of cylinder sleeve inner wall oil circuit structure, comprise helix and Wei Keng, the described helix degree of depth is 1-150um, and width is 1 ~ 100um, and head number is 10-100 head, and pitch is 1-20mm; Described micro-hole degree of depth is 3 ~ 100um.The preparation method of cylinder sleeve inner wall oil circuit structure, the laser launched by laser forms laser beam projects on reflecting mirror through optical fiber, is refracted on inboard wall of cylinder liner etches micro-hole and helix through reflecting mirror.Inboard wall of cylinder liner surface of the present invention arranges point-like, the wire lubricant oil road structure of regular distribution, wear-resisting property improves 1 ~ 2 times than prior art, oil consumption decreases 20% ~ 25%, barrel wear drops to 2.5um from 5um, hydrocarbon particulate emissions reduces 20% ~ 25%, and cylinder sleeve improves 1.4 times working life.
Description
Technical field
The present invention relates to a kind of cylinder sleeve, be specifically related to a kind of cylinder sleeve inner wall oil circuit structure.The invention still further relates to the preparation method of this cylinder sleeve oil circuit.
Background technique
Inboard wall of cylinder liner is the leading face that piston moves reciprocatingly, cylinder sleeve and this operating mode that friction pair is in high temperature, high pressure and has particulate and aggressive medium of piston in work, inordinate wear can cause leakage of oil, leak vapour and power drop, this just needs inboard wall of cylinder liner to have good lubrication, on the basis using lubricant oil, also need rationally to prepare oil-bearing structure on inboard wall of cylinder liner surface, this oil-bearing structure is based on micro-dotted line.
Traditional inboard wall of cylinder liner processing technology is honing, honing technique is the angle moving up and down to control cylinder sleeve surface crazing and the reticulate pattern groove depth of honing head when utilizing the gear honing of hone stone and honing, defines uncontrollable, mixed and disorderly oil-bearing structure at cylinder liner surface.The reticulate pattern of this structure is deep mixed, micro-hole is larger compared with the degree of finish of its inboard wall of cylinder liner of position, deep, increase the oil storage capacity of inboard wall of cylinder liner, and more shallow reticulate pattern is after break-in after a while, micro-hole is just worn easily, thus loses oil storage function, and the fines worn away is mixed in lubricant oil, the wearing and tearing of the further booster engine cylinder sleeve of meeting, make the service life reduction of motor.
Summary of the invention
The object of the present invention is to provide a kind of cylinder sleeve inner wall oil circuit structure, to improve the oil reserve of inboard wall of cylinder liner.
Another object of the present invention is to provide the preparation method of above-mentioned cylinder sleeve inner wall oil circuit structure.
The object of the present invention is achieved like this, and a kind of cylinder sleeve inner wall oil circuit structure, is characterized in that: comprise helix and Wei Keng, and the described helix degree of depth is 1 ~ 150um, and width is 1 ~ 100um, and head number is 10 ~ 100, and pitch is 1 ~ 20mm; Described micro-hole degree of depth is 3 ~ 100um.
The helix degree of depth of inboard wall of cylinder liner epimere is 1 ~ 100um, and micro-hole degree of depth is 1 ~ 100um.
The pitch of the helix in inboard wall of cylinder liner stage casing is 1 ~ 15mm.
The helix degree of depth of inboard wall of cylinder liner hypomere is 1 ~ 100um.
The angle of the micro-hole of described spiral and substantially horizontal is 30 DEG C ~ 145 DEG C.
Micro-pit density 20 ~ 350/cm in described helix
2.
Micro-pit density 50 ~ 350/cm in the helix of described inboard wall of cylinder liner epimere
2.
Another object of the present invention realizes like this, the preparation method of above-mentioned cylinder sleeve inner wall oil circuit structure: the laser that laser is launched forms laser beam projects on reflecting mirror through optical fiber, and described laser beam is refracted on inboard wall of cylinder liner through reflecting mirror and etches micro-hole and helix.
Laser power is 0.2 ~ 2.5KW, pulsewidth 2 ~ 10MS, frequency 100 ~ 1000HZ, and basic mode is TM00.
When etching micro-hole and helix to inboard wall of cylinder liner epimere, laser power is 0.2 ~ 1.5KW, frequency 100 ~ 800HZ.
When etching micro-hole and helix to inboard wall of cylinder liner stage casing, laser power is 0.5 ~ 2.5KW.
When etching micro-hole and helix to inboard wall of cylinder liner hypomere, laser power is 0.2 ~ 2.0KW, pulsewidth 2 ~ 6MS, frequency 100 ~ 800HZ.
The present invention has following beneficial effect:
1, the equal peak valley R in surface at inboard wall of cylinder liner epimere position of the present invention
zDi=2.0 ~ 4.5um, core roughness depth R
k=0.5 ~ 1.4um, groove mark material ratios Mr
2=65 ~ 85%, oil reserve Wei≤0.3.The equal peak valley R in surface at position, inboard wall of cylinder liner stage casing
zDi=2.0 ~ 5.5um, core roughness depth R
k=0.5 ~ 1.7um, groove mark material ratios Mr
2=55 ~ 90%, oil reserve Wei≤0.4.The equal peak valley R in surface at inboard wall of cylinder liner hypomere position
zDi=3.0 ~ 5.5um, core roughness depth R
k=0.6 ~ 1.7um, groove mark material ratios Mr
2=55 ~ 70%, oil reserve Wei≤0.3, the present invention has increased substantially the oil reserve of cylinder sleeve inner wall oil circuit structure, improves lubrication effect.
2, inboard wall of cylinder liner surface of the present invention arranges point-like, the wire lubricant oil road structure of regular distribution, wear-resisting property improves 1 ~ 2 times than prior art, oil consumption decreases 20% ~ 25%, barrel wear drops to 2.5um from 5um, hydrocarbon particulate emissions reduces 20% ~ 25%, and cylinder sleeve improves 1.4 times working life.
3, the present invention adopts programming software and flexible optical fibre Laser Equipment accurately to control laser stroke, and by adjustment laser technical parameters, carry out laser stereo lithography respectively to inboard wall of cylinder liner epimere position, position, stage casing, hypomere position, method is simple, and validity is high.
Accompanying drawing explanation
Fig. 1 is cylinder sleeve structural representation of the present invention;
Fig. 2 is laser stereo lithography optical guide schematic diagram of the present invention;
Fig. 3 is cylinder sleeve inner wall oil circuit structure schematic diagram of the present invention;
In figure, 1. inboard wall of cylinder liner, 2. reflecting mirror, 3. laser beam, 4. optical fiber.
Embodiment
A kind of cylinder sleeve inner wall oil circuit structure and preparation method thereof:
First, different pattern etching parameters is designed according to inboard wall of cylinder liner 1 epimere, stage casing, hypomere fretting wear situation.
The oil circuit of inboard wall of cylinder liner 1 epimere is made up of helical and micro-hole, its helix parameter: head number is 10 ~ 100, and pitch is 1 ~ 20mm, and the helix degree of depth is 1 ~ 100um, and helix width is 1 ~ 100um; Its micro-hole parameter: the micro-hole degree of depth 1 ~ 100um.The micro-hole of spiral angle is in the horizontal direction 30 DEG C ~ 145 DEG C, micro-pit density 20 ~ 350/cm in helix
2.
Inboard wall of cylinder liner 1 stage casing oil circuit is made up of helical and micro-hole, its helix parameter: head number is 10 ~ 100, and pitch is 1 ~ 15mm, and the helix degree of depth is 1 ~ 150um, and helix width is 1 ~ 100um; Micro-hole parameter: the micro-hole degree of depth 3 ~ 100um.The micro-hole of spiral angle is in the horizontal direction 30 DEG C ~ 145 DEG C, micro-pit density 50 ~ 350/cm in helix
2.
Inboard wall of cylinder liner 1 hypomere oil circuit is made up of helical and micro-hole, its helix parameter: head number is 10 ~ 100, and pitch is 1 ~ 20mm, and the helix degree of depth is 1 ~ 100um, and helix width is 1 ~ 100um, micro-hole parameter; Its micro-hole degree of depth 3 ~ 100um.The micro-hole of spiral angle is in the horizontal direction 30 DEG C ~ 145 DEG C, micro-pit density 50 ~ 200/cm in helix
2.
Then, according to the design parameter of inboard wall of cylinder liner 1, programming software and flexible optical fibre Laser Equipment is adopted accurately to control laser stroke, adjustment laser technical parameters, the laser that laser is launched forms laser beam 3 through optical fiber 4 and projects on reflecting mirror 2, be refracted on inboard wall of cylinder liner 1 through reflecting mirror 2, respectively laser stereo lithography carried out to inboard wall of cylinder liner 1 epimere position, position, stage casing, hypomere position.
Wherein laser stereo lithography test is divided into two benches to carry out, first stage carries out investigative test to the process parameter preset, the orthogonal test of second stage is carried out under the prerequisite determining basic technology scope, laser power, pulsewidth and frequency, basic mode are main process parameter, according to test result determination laser alloying optimal processing parameter.
Wherein, inboard wall of cylinder liner epimere position laser stereo lithography process parameter is: laser power is 0.2 ~ 1.5KW, pulsewidth 2 ~ 10MS, frequency 100 ~ 800HZ, and basic mode is TM00;
Position, inboard wall of cylinder liner stage casing laser stereo lithography process parameter is: laser power is 0.5 ~ 2.5KW, pulsewidth 2 ~ 10MS, frequency 100 ~ 1000HZ, and basic mode is TM00;
Inboard wall of cylinder liner hypomere position laser stereo lithography process parameter is: laser power is 0.2 ~ 2.0KW, pulsewidth 2 ~ 6MS, frequency 100 ~ 800HZ, and basic mode is TM00.
Laser stereo lithography parameter determines rear adjustment laser optical path, laser stereo lithography optical guide schematic diagram as Fig. 2, inboard wall of cylinder liner point-like, wire oil-bearing structure macroscopic view schematic diagram as Fig. 3, the equal peak valley R in surface at prepared inboard wall of cylinder liner epimere position
zDi=2.0 ~ 4.5um, core roughness depth R
k=0.5 ~ 1.4um, groove mark material ratios Mr
2=65 ~ 85%, oil reserve Wei≤0.3.The equal peak valley R in surface at position, inboard wall of cylinder liner stage casing
zDi=2.0 ~ 5.5um, core roughness depth R
k=0.5 ~ 1.7um, groove mark material ratios Mr
2=55 ~ 90%, oil reserve Wei≤0.4.The equal peak valley R in surface at inboard wall of cylinder liner hypomere position
zDi=3.0 ~ 5.5um, core roughness depth R
k=0.6 ~ 1.7um, groove mark material ratios Mr
2=55 ~ 70%, oil reserve Wei≤0.3.
Embodiment 1-5, a kind of cylinder sleeve inner wall oil circuit structure and preparation method thereof, cylinder sleeve inner wall oil circuit structure parameter sees the following form 1; Laser technical parameters sees the following form 2.
Table 1 embodiment cylinder sleeve inner wall oil circuit structure parameter
Table 2 embodiment laser technical parameters
Inboard wall of cylinder liner adopts the wear rate of common honing and spongy chromium plating to be 0.04 ~ 0.05mm/kh, and oil consumption is 1.0 ~ 1.4g/kw.h; Point-like, the wire lubricant oil road structure of the inboard wall of cylinder liner regular distribution in surface of the present invention, wear rate is 0.025 ~ 0.03mm/kh, wear-resisting property improves 1 ~ 2 times than original, oil consumption decreases 20% ~ 25%, barrel wear drops to 2.5um from 5um, hydrocarbon particulate emissions reduces 20% ~ 25%, and this point-like, wire lubricant oil road structure can improve cylinder sleeve and improve 1.4 times working life.
Claims (2)
1. a cylinder sleeve inner wall oil circuit structure, is characterized in that: comprise helix and Wei Keng, and the described helix degree of depth is 1-150um, and width is 1 ~ 100um, and head number is 10-100 head, and pitch is 1-20mm; Described micro-hole degree of depth is 3 ~ 100um;
The helix degree of depth of described inboard wall of cylinder liner (1) epimere is 1-100um; The pitch of the helix in inboard wall of cylinder liner (1) stage casing is 1-15mm; The helix degree of depth of inboard wall of cylinder liner (1) hypomere is 1-100um;
The angle of the micro-hole of spiral and substantially horizontal is 30 ° ~ 145 °;
Micro-pit density 50 ~ 350/cm in described helix
2.
2. the preparation method of cylinder sleeve inner wall oil circuit structure, it is characterized in that: the laser that laser is launched forms laser beam (3) through optical fiber (4) and projects on reflecting mirror (2), is refracted to inboard wall of cylinder liner (1) the micro-hole of upper etching and helix through reflecting mirror (2);
Laser power is 0.2-2.5KW, pulsewidth 2 ~ 10MS, frequency 100 ~ 1000HZ, and basic mode is TM00;
When etching micro-hole and helix to inboard wall of cylinder liner (1) epimere, laser power is 0.2 ~ 1.5KW, frequency 100 ~ 800HZ;
When etching micro-hole and helix to inboard wall of cylinder liner (1) stage casing, laser power is 0.5 ~ 2.5KW; When etching micro-hole and helix to inboard wall of cylinder liner (1) hypomere, laser power is 0.2 ~ 2.0KW, pulsewidth 2 ~ 6MS, frequency 100 ~ 800HZ.
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| CN104455407B (en) * | 2014-11-03 | 2016-08-24 | 中国船舶重工集团公司第十二研究所 | A kind of cylindrical inner wall network oil-bearing structure preparation method |
| CN105215554A (en) * | 2015-10-29 | 2016-01-06 | 无锡桥阳机械制造有限公司 | A kind of laser honing technique |
| CN107687375B (en) * | 2017-07-25 | 2020-05-05 | 北京航空航天大学 | Method for designing laser micro-modeling structure of inner wall of engine cylinder sleeve |
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| CN1385277A (en) * | 2002-05-30 | 2002-12-18 | 杭州电子工业学院 | Microconcave digital controlled laser formation method and device on working surface of friction pair |
| CN1401457A (en) * | 2002-08-06 | 2003-03-12 | 江苏大学 | Method for laser compound treating surface of friction pair |
| CN1438438A (en) * | 2003-02-14 | 2003-08-27 | 华中科技大学 | Method for increasing internal surface wearability of engine cylinder body and cylinder sleeve |
| CN102179629A (en) * | 2011-03-21 | 2011-09-14 | 中国科学院力学研究所 | System for carrying out laser etching on internal wall of cylinder liner of internal combustion engine and processing method thereof |
| CN202006339U (en) * | 2010-06-07 | 2011-10-12 | 江苏大学 | Laser micro-textured piston skirt |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2431976B (en) * | 2005-11-05 | 2011-04-13 | Ford Global Tech Llc | An engine and a method of making same |
| JP2008144835A (en) * | 2006-12-08 | 2008-06-26 | Nissan Motor Co Ltd | Sliding member and method for forming fine recessed part on sliding surface |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385277A (en) * | 2002-05-30 | 2002-12-18 | 杭州电子工业学院 | Microconcave digital controlled laser formation method and device on working surface of friction pair |
| CN1401457A (en) * | 2002-08-06 | 2003-03-12 | 江苏大学 | Method for laser compound treating surface of friction pair |
| CN1438438A (en) * | 2003-02-14 | 2003-08-27 | 华中科技大学 | Method for increasing internal surface wearability of engine cylinder body and cylinder sleeve |
| CN202006339U (en) * | 2010-06-07 | 2011-10-12 | 江苏大学 | Laser micro-textured piston skirt |
| CN102179629A (en) * | 2011-03-21 | 2011-09-14 | 中国科学院力学研究所 | System for carrying out laser etching on internal wall of cylinder liner of internal combustion engine and processing method thereof |
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