CN106480447A - A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove - Google Patents
A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove Download PDFInfo
- Publication number
- CN106480447A CN106480447A CN201510552178.1A CN201510552178A CN106480447A CN 106480447 A CN106480447 A CN 106480447A CN 201510552178 A CN201510552178 A CN 201510552178A CN 106480447 A CN106480447 A CN 106480447A
- Authority
- CN
- China
- Prior art keywords
- piston ring
- laser
- ring groove
- laser melting
- melting coating
- 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.)
- Pending
Links
Landscapes
- Laser Beam Processing (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove, its step is：Dusty material according to needed for the configuration of alloy powder composition；Before carrying out laser melting coating work, piston ring groove is cleared up it is ensured that be there is no greasy dirt, impurity etc.；From
DL-HL-T5000
Type
CO2
Alloy powder by the way of synchronous powder feeding system, is sent directly into molten bath using airborne dust feeder, carries out laser melting coating to piston ring groove end face by gas laser
,
The thickness of powder is
1.5-2mm
；When carrying out laser melting coating to piston ring groove end face, laser beam tilts to inject piston ring groove, and laser beam with the angle of annular groove bottom surface is
35
°～
38
°, coaxially blow argon in cladding process and protected.Present invention proportioning in dusty material by the technological parameter and each element composition of optimization design laser melting coating, the microstructure of surface cladding layer making low-speed heave-load marine diesel engine piston annular groove is fine and close, uniformly, pore-free, is mingled with and the defect such as crackle.
Description
Technical field
The present invention relates to a kind of laser manufacture method of ship power part, the method that more particularly to a kind of laser manufactures low-speed heave-load marine diesel engine piston annular groove.
Background technology
Diesel engine is the main source of ship power, and piston is one of main motion parts of diesel engine, is the ingredient of combustor, and it is responsible for huge task.Very big mechanical stress and thermal stress is subject, simultaneously also subject to abrasion during pistons work.The rigid residue that the abrasion of piston ring upper and lower end face is primarily due in machine oil fuel oil and the dust granules infiltrated from air form mechanical lapping on upper and lower end face, are substantially abrasive wears.For the low-speed heave-load diesel engine of heavy oil combustion, the viscosity of heavy oil is very high, has a strong impact on fuel pumping, purified treatment and atomization.Heavy oil product SO3Can speed up Hydrocarbon polymerization and tie carbon, it is difficult to be eliminated, and increases the abrasion of cylinder and piston ring.And the ash in heavy oil is also substantially many than light oil, is equivalent to abrasive material, cause to wear and tear.These abrasions if things go on like this make piston ring groove especially its lower edges form loudspeaker v notch v, have a strong impact on the sealing of piston and then the quality of the whole piston of impact.Typically can be by chrome faced mode come strengthening surface hardness, but chromium plating thinner thickness, adhesion is strong and environmental pollution is serious.
Laser melting coating refers to add the coating material of selection by way of different on the matrix by cladding, through high-energy-density laser beam irradiated heat, it is allowed to melt with matrix surface, and rapid solidification, thus form the technical process of the face coat being metallurgical binding with it in substrate surface.Advanced technology as material surface strengthening aspect in recent years, laser melting coating has the series of advantages such as cause that workpiece deformation is little, dilution rate is low, between coating and base material adhesion is strong, and laser melting and coating process common in the prior art can not be assumed as a matter of course is applied on low-speed heave-load marine diesel engine piston annular groove, still need to the difference according to base material and desired properties for the those skilled in the art, the rational cladding powder selecting particular formulation and specific melting and coating process, otherwise cladding layer occurs the defects such as pore, crackle, the serviceability of impact workpiece.
Content of the invention
It is an object of the invention to solving the problems referred to above that prior art exists, by Improvement repeatedly, give a kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove, using this specific process, can on piston ring groove end face one layer of flawless of cladding, free from admixture, the wear resistant alloy powders of dense structure, the service life of piston is greatly improved.
The object of the present invention is achieved like this：A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove, specific laser melting and coating process step is as follows.
(1)
Dusty material according to needed for the configuration of alloy powder composition.
(2), before carrying out laser melting coating work, piston ring groove is cleared up it is ensured that be there is no greasy dirt, impurity etc..
(3) select DL-HL-T5000 type CO2 gas laser, by the way of synchronous powder feeding system, using airborne dust feeder, alloy powder is sent directly into molten bath, piston ring groove end face is carried out with laser melting coating, the thickness of powder is 1.5-2mm.
(4), when carrying out laser melting coating to piston ring groove end face, laser beam tilts injects piston ring groove, and laser beam is 35 ° ~ 38 ° with the angle of annular groove bottom surface, coaxially blows argon and is protected, specific process parameter is as follows in cladding process：
Cladding power P=3000W ~ 4000W；
Spot diameter D=3.5mm；
Scan velocity V=400 ~ 500mm/min；
Overlapping rate 50%.
The principle of the present invention is passed through to adjust laser incident angle, realizes carrying out laser melting coating to the end face of piston ring groove along in the case of interfere on no annular groove, alloy powder can be made with base material fast melt and to realize completely metallurgical binding using high energy density laser bundle.Make annular groove end face obtain the wear-resistant coating of a floor height hardness, extend the service life of piston.
Compared with prior art, advantage of the invention is that make use of this advanced surface peening means of laser melting coating, compared with other existing technology, by the piston ring groove wear-resistant coating of laser melting coating have dense structure, deformation little, the low advantage of dilution rate, the proportioning in dusty material by the technological parameter and each element composition of optimization design laser melting coating simultaneously, makes microstructure of surface cladding layer fine and close, uniformly, pore-free, is mingled with and the defect such as crackle.Simultaneously laser melting and coating process have more pollution-free, productivity ratio is high, energy consumption is low, cladding layer allowance is little and the low feature of integrated cost.
Specific embodiment
Embodiment 1.
The material of piston ring groove is 42CrMo, subjects very big mechanical stress and thermal stress, simultaneously also subject to abrasion during work.The rigid residue that the abrasion of piston ring upper and lower end face is primarily due in machine oil fuel oil and the dust granules infiltrated from air form mechanical lapping on upper and lower end face, are substantially abrasive wears.These abrasions if things go on like this make piston ring groove especially its lower edges form loudspeaker v notch v, have a strong impact on the sealing of piston and then the quality of the whole piston of impact.
Present embodiments provide the laser cladding method of piston ring groove, specific processing step is as follows.
(1) early stage machine adds.
Reach needing the piston ring groove carrying out laser melting coating to carry out turnery processing and be suitable for size.
(2) surface preparation.
Before carrying out laser melting coating, will be clean for the cleaning oil pollution in piston ring groove using acetone.
(3) selection of alloy powder and proportioning.
From the higher iron(-)base powder of chromium content, with the binding ability of base material more, and the carbide being formed, boride hardness are higher, can be very good to play wear-resisting effect, the cladding better performances of this powder simultaneously, the process parameters range of adaptation is wide, and cladding effect is more stable, by required composition proportion powder and be sufficiently mixed, the composition of this iron(-)base powder is by weight percentage.
C：0.14%；Cr：15.3%；Si：1.12%；Ni：1.81%；Mn:0.34；Mo：1.06%； B：1.24%； Fe：Surplus.
(4) dust feeder and shaven head are adjusted.
In order that laser can smoothly enter piston ring groove in the case that supreme lower edge is interfered and carry out laser melting coating, the angle of adjustment rotation shaven head, laser beam and the angle of annular groove bottom surface is made to be 37 °.
(5)CO2Gas laser laser melting coating.
Using DL-HL-T5000 type CO2Gas laser carries out laser melting coating to annular groove end face, and using argon as protective gas in cladding process.Wherein technological parameter is：
Cladding power P=4000W
Spot diameter D=3.5mm
Scan velocity V=400mm/min
Overlapping rate is 50%.
Embodiment 2.
The material of piston ring groove is 42CrMo, subjects very big mechanical stress and thermal stress, simultaneously also subject to abrasion during work.The rigid residue that the abrasion of piston ring upper and lower end face is primarily due in machine oil fuel oil and the dust granules infiltrated from air form mechanical lapping on upper and lower end face, are substantially abrasive wears.These abrasions if things go on like this make piston ring groove especially its lower edges form loudspeaker v notch v, have a strong impact on the sealing of piston and then the quality of the whole piston of impact.
The implementation case provides the laser cladding method of piston ring groove, and specific processing step is as follows.
(1) early stage machine adds.
Reach needing the piston ring groove carrying out laser melting coating to carry out turnery processing and be suitable for size.
(2) surface preparation.
Before carrying out laser melting coating, will be clean for the cleaning oil pollution in piston ring groove using acetone.
(3) selection of alloy powder and proportioning.
From the higher iron(-)base powder of chromium content, with the binding ability of base material more, and the carbide being formed, boride hardness are higher, can be very good to play wear-resisting effect, the cladding better performances of this powder simultaneously, the process parameters range of adaptation is wide, and cladding effect is more stable, by required composition proportion powder and be sufficiently mixed, the composition of this iron(-)base powder is by weight percentage.
C：0.14%；Cr：15.3%；Si：1.12%；Ni：1.81%；Mn:0.34；Mo：1.06%； B：1.24%； Fe：Surplus.
(4) dust feeder and shaven head are adjusted.
In order that laser can smoothly enter piston ring groove in the case that supreme lower edge is interfered and carry out laser melting coating, the angle of adjustment rotation shaven head, laser beam and the angle of annular groove bottom surface is made to be 38 °.
(5)CO2Gas laser laser melting coating.
Using DL-HL-T5000 type CO2 gas laser, laser melting coating is carried out to annular groove end face, and using argon as protective gas in cladding process.Wherein technological parameter is：
Cladding power P=3500W
Spot diameter D=3.5mm
Scan velocity V=450mm/min
Overlapping rate is 50%.
Embodiment 3.
The material of piston ring groove is 42CrMo, subjects very big mechanical stress and thermal stress, simultaneously also subject to abrasion during work.The rigid residue that the abrasion of piston ring upper and lower end face is primarily due in machine oil fuel oil and the dust granules infiltrated from air form mechanical lapping on upper and lower end face, are substantially abrasive wears.These abrasions if things go on like this make piston ring groove especially its lower edges form loudspeaker v notch v, have a strong impact on the sealing of piston and then the quality of the whole piston of impact.
The implementation case provides the laser cladding method of piston ring groove, and specific processing step is as follows.
(1) early stage machine adds.
Reach needing the piston ring groove carrying out laser melting coating to carry out turnery processing and be suitable for size.
(2) surface preparation.
Before carrying out laser melting coating, will be clean for the cleaning oil pollution in piston ring groove using acetone.
(3) selection of alloy powder and proportioning.
From the higher iron(-)base powder of chromium content, with the binding ability of base material more, and the carbide being formed, boride hardness are higher, can be very good to play wear-resisting effect, the cladding better performances of this powder simultaneously, the process parameters range of adaptation is wide, and cladding effect is more stable, by required composition proportion powder and be sufficiently mixed, the composition of this iron(-)base powder is by weight percentage.
C：0.14%；Cr：15.3%；Si：1.12%；Ni：1.81%；Mn:0.34；Mo：1.06%； B：1.24%； Fe：Surplus.
(4) dust feeder and shaven head are adjusted.
In order that laser can smoothly enter piston ring groove in the case that supreme lower edge is interfered and carry out laser melting coating, the angle of adjustment rotation shaven head, laser beam and the angle of annular groove bottom surface is made to be 37 °.
(5)CO2Gas laser laser melting coating.
Using DL-HL-T5000 type CO2 gas laser, laser melting coating is carried out to annular groove end face, and using argon as protective gas in cladding process.Wherein technological parameter is.
Cladding power P=3900W.
Spot diameter D=3.5mm.
Scan velocity V=500mm/min.
Overlapping rate is 50%.
Claims (1)
1. a kind of laser manufactures the method for low-speed heave-load marine diesel engine piston annular groove it is characterised in that specific laser melting and coating process step is as follows：
Dusty material according to needed for the configuration of alloy powder composition；
(2), before carrying out laser melting coating work, piston ring groove is cleared up it is ensured that be there is no greasy dirt, impurity etc.；
(3) select DL-HL-T5000 type CO2 gas laser, by the way of synchronous powder feeding system, using airborne dust feeder, alloy powder is sent directly into molten bath, piston ring groove end face is carried out with laser melting coating, the thickness of powder is 1.5-2mm；
(4), when carrying out laser melting coating to piston ring groove end face, laser beam tilts injects piston ring groove, and laser beam is 35 ° ~ 38 ° with the angle of annular groove bottom surface, coaxially blows argon and is protected, specific process parameter is in cladding process：
Cladding power P=3000W ~ 4000W；
Spot diameter D=3.5mm；
Scan velocity V=400 ~ 500mm/min；
Overlapping rate 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552178.1A CN106480447A (en) | 2015-09-02 | 2015-09-02 | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552178.1A CN106480447A (en) | 2015-09-02 | 2015-09-02 | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106480447A true CN106480447A (en) | 2017-03-08 |
Family
ID=58237878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510552178.1A Pending CN106480447A (en) | 2015-09-02 | 2015-09-02 | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106480447A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439969A (en) * | 2018-10-17 | 2019-03-08 | 江苏华强电力设备有限公司 | Intelligent Bus slot groove body and preparation process for data center |
| CN111441049A (en) * | 2020-04-13 | 2020-07-24 | 济南大学 | Laser cladding powder for remanufacturing 12CrNi3 camshaft and preparation method thereof |
| CN114369821A (en) * | 2021-11-30 | 2022-04-19 | 江苏智远激光装备科技有限公司 | Laser cladding repair process for gray cast iron piston head ring groove |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517539A (en) * | 2003-01-16 | 2004-08-04 | 江 王 | Piston with wear-resistant ring slot surface |
| CN1632297A (en) * | 2004-12-23 | 2005-06-29 | 江苏仪征威龙活塞环有限公司 | Novel process for making piston ring |
| CN102021569A (en) * | 2010-12-20 | 2011-04-20 | 昆明理工大学 | Laser cladding repairing method for cylinder sleeve |
| CN102069351A (en) * | 2010-12-20 | 2011-05-25 | 昆明理工大学 | Manufacturing process of composite cylinder sleeve |
| CN102166702A (en) * | 2010-12-20 | 2011-08-31 | 昆明理工大学 | Laser cladding repairing method of piston rod |
| CN103194749A (en) * | 2012-01-09 | 2013-07-10 | 沈阳大陆激光成套设备有限公司 | Method for preparing heat and wear resistant alloy coat on surface of roll gang |
-
2015
- 2015-09-02 CN CN201510552178.1A patent/CN106480447A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517539A (en) * | 2003-01-16 | 2004-08-04 | 江 王 | Piston with wear-resistant ring slot surface |
| CN1632297A (en) * | 2004-12-23 | 2005-06-29 | 江苏仪征威龙活塞环有限公司 | Novel process for making piston ring |
| CN102021569A (en) * | 2010-12-20 | 2011-04-20 | 昆明理工大学 | Laser cladding repairing method for cylinder sleeve |
| CN102069351A (en) * | 2010-12-20 | 2011-05-25 | 昆明理工大学 | Manufacturing process of composite cylinder sleeve |
| CN102166702A (en) * | 2010-12-20 | 2011-08-31 | 昆明理工大学 | Laser cladding repairing method of piston rod |
| CN103194749A (en) * | 2012-01-09 | 2013-07-10 | 沈阳大陆激光成套设备有限公司 | Method for preparing heat and wear resistant alloy coat on surface of roll gang |
Non-Patent Citations (1)
| Title |
|---|
| 王广春: "《增材制造技术及应用实例》", 31 March 2014, 北京：机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439969A (en) * | 2018-10-17 | 2019-03-08 | 江苏华强电力设备有限公司 | Intelligent Bus slot groove body and preparation process for data center |
| CN111441049A (en) * | 2020-04-13 | 2020-07-24 | 济南大学 | Laser cladding powder for remanufacturing 12CrNi3 camshaft and preparation method thereof |
| CN114369821A (en) * | 2021-11-30 | 2022-04-19 | 江苏智远激光装备科技有限公司 | Laser cladding repair process for gray cast iron piston head ring groove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Miguel et al. | Tribological study of NiCrBSi coating obtained by different processes | |
| CN110344056B (en) | Process for preparing cladding layer on surface of copper matrix by high-speed laser cladding technology | |
| CN104250801B (en) | A kind of hot rolled seamless steel tube conveying roller laser cladding wear, the technique of heat-resisting alloy coating | |
| CN110565087B (en) | Laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and preparation method thereof | |
| US20160138144A1 (en) | Novel powder | |
| CN106480380A (en) | A kind of laser manufactures the iron(-)base powder of low-speed heave-load marine diesel engine piston annular groove | |
| CN105755464B (en) | Double-deck gradient laser gain material manufacture method | |
| CN101818343A (en) | Laser cladding method of composite coating containing spherical tungsten carbide | |
| CN108866538B (en) | Laser cladding in-situ synthesis composite carbide (Ti, Nb) C reinforced Ni-based coating and preparation | |
| CN110257826A (en) | Grain roll bearing position laser cladding method and laser melting coating alloy powder | |
| CN102284786A (en) | Preparation method for compositing high-speed steel wear resistant layer on surface of aluminum alloy | |
| CN110079756A (en) | A kind of preparation method of chromium carbide wear-resistant coating | |
| CN104018032A (en) | Cladding material and method for repairing hot rolls by virtue of laser cladding | |
| CN106480447A (en) | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove | |
| CN110421242A (en) | A kind of wear resistant alloy material and the wear-resisting cutter ring plasma surfacing technique of shield machine | |
| CN109504966A (en) | A kind of preparation method of cylinder head vermicular cast iron surface abrasion resistance anti-friction coating | |
| CN104722893B (en) | Method for preparing wear-resistant coating based on overlay welding and argon shielded arc cladding | |
| CN105586562A (en) | Process for remanufacturing piston rod of concrete pump truck | |
| CN113416952A (en) | TiC reinforced metal matrix composite alloy powder for laser cladding of nodular iron castings and preparation method thereof | |
| CN109440049B (en) | Method for preparing amorphous aluminum coating by compounding electric arc spraying and laser remelting | |
| CN106891107A (en) | Hot rolled seamless steel tube mandrel surface composite-making process method | |
| CN106591829A (en) | Abrasion-resistant coating and manufacturing method, application and gear milling cutter thereof | |
| CN113337815A (en) | Method for preparing double-scale iron-based composite gradient coating based on high-speed laser cladding method | |
| CN104250802A (en) | Process for performing laser cladding of superhard high speed steel by hot rolling of stretch reducing roller of seamless steel pipe | |
| CN202510273U (en) | Cavitation-resistant water turbine blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170308 |