CN109112536A - A kind of restorative procedure of bearing shell - Google Patents
A kind of restorative procedure of bearing shell Download PDFInfo
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- CN109112536A CN109112536A CN201811333490.1A CN201811333490A CN109112536A CN 109112536 A CN109112536 A CN 109112536A CN 201811333490 A CN201811333490 A CN 201811333490A CN 109112536 A CN109112536 A CN 109112536A
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- bearing shell
- cladding layer
- laser
- melting coating
- powder
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laser Beam Processing (AREA)
Abstract
A kind of restorative procedure of bearing shell, comprising the following steps: (1) detect the damage location of bearing shell；(2) bearing shell is cleaned, the oxidation film and greasy dirt on bearing shell surface are removed；(3) coaxial carrier gas powder feeding technique is used, babbit powder is sent at damage location and carries out laser melting coating, forms the first cladding layer；(4) laser remolten is carried out to the first cladding layer region；(5) laser melting coating is carried out to the first cladding layer region after remelting, forms the second cladding layer；(6) it examines and is machined.The present invention carries out laser remolten by the first cladding layer region formed to laser melting coating, then secondary laser cladding, form the second cladding layer for realizing metallurgical bonding with the first cladding layer and former babbit layer simultaneously, so that, even if the first cladding layer is separated with matrix, whole obscission will not occur in use process, it still can guarantee bearing shell normal use, prolong the service life, and does not need spraying and repair oxidant layer, save the cost.
Description
Technical field
The invention belongs to bearing shell technical fields, and in particular to a kind of restorative procedure of bearing shell.
Background technique
Bearing shell is the part of sliding bearing and journal contact, and shape is the semi-cylindrical of tiles, very smooth, general with green
The wear-resistant materials such as copper, antifriction alloy are made matrix, and there is the babbit manufacture of good antifriction effect in matrix upper and
At.In bearing shell practical work process, easily there is abrasion, scuffing, crackle, delamination or scaling loss etc. in bearing shell babbit, leads to unit
Be unable to operate normally, if the directly bearing shell that more renews, these bearing shells with a little defect directly scrap will cause resource and
The huge waste of the energy also will cause environmental pollution, and therefore, if can repair to bearing shell, can extend bearing shell uses the longevity
Life, it is also cost-saved, and bring significant economic benefit.
Laser melting and coating technique refers to the coating material for placing selection on being coated matrix surface in a manner of different fillers,
It is allowed to and matrix surface a thin layer while melting through laser irradiation, and form that dilution is extremely low and and basis material after quickly solidifying
At the surface covering of metallurgical bonding, coating structure is fine and close, is well combined with matrix.CN106435567A discloses a kind of compressor
With the laser melting coating restorative procedure of bearing shell, this method mainly by preheating to bearing shell damage location, then sprays renovation agent
Surface reconditioning oxidant layer is formed, laser melting coating is then carried out in surface reconditioning oxidant layer, obtains cladding layer, finally machining is completed
It repairs.
Fusing point for casting the alloy material of bearing shell matrix is typically much higher than the fusing point of babbit, and babbit is easy
Ablation and oxidation, therefore, the binding force that cladding layer and matrix that laser melting coating obtains are carried out directly on matrix are poor, are unable to reach
Purpose is repaired, this is also that above-mentioned patent needs to spray the reason of repairing oxidant layer in advance before carrying out laser melting coating reparation.But it repairs
Oxidant layer and matrix belong to mechanical bond, and bond strength is still lower, and increase rehabilitation cost.Babbit powder is used in addition, repairing
Last inevitable distinct with the original babbit of bearing shell, after carrying out laser melting coating to damage location, cladding layer and former Pasteur are closed
Binding force is poor between layer gold, after devoting oneself to work again, repairs oxidant layer and cladding layer easily integrally falls off.
Summary of the invention
It is an object of the invention to: reparation oxidant layer, rehabilitation cost need to be sprayed for above-mentioned existing bearing shell laser melting coating reparation
The problem of high and reparation oxidant layer easy entirety low with substrate combinating strength falls off, the present invention provides a kind of restorative procedure of bearing shell.
The technical solution adopted by the invention is as follows:
A kind of restorative procedure of bearing shell, comprising the following steps:
(1) damage location of bearing shell is detected；
(2) bearing shell is cleaned, the oxidation film and greasy dirt on bearing shell surface are removed；
(3) coaxial carrier gas powder feeding technique is used, babbit powder is sent at damage location and carries out laser melting coating, is formed
First cladding layer, technological parameter are as follows: laser power 1.0-2.5KW, spot diameter 2-3mm, scanning speed 4-8mm/s, powder sending quantity
3.8-4.5g/min, protective gas use argon gas, gas flow 5-25L/min；
(4) laser remolten is carried out to the first cladding layer region；
(5) laser melting coating is carried out to the first cladding layer region after remelting, forms the second cladding layer, technological parameter are as follows: swashed
Optical power 0.1-1.0KW, spot diameter 2-3mm, scanning speed 4-8mm/s, powder sending quantity 3.8-4.5g/min, protective gas use
Argon gas, gas flow 5-25L/min；
(6) it examines and is machined.
The present invention carries out laser melting coating to damage location first, the first cladding layer is formed, then to the first cladding layer region
Laser remolten is carried out, which includes the first cladding layer and its adjacent part original babbit layer, so again
When secondary progress laser melting coating, babbit powder can also close while realizing metallurgical bonding with the first cladding layer with former Pasteur
Layer gold forms metallurgical bonding, in this way, the first cladding layer is located at below the second cladding layer, even if between the first cladding layer and matrix
Binding force is poor, and in use process, the first cladding layer is separated with matrix, but since the second cladding layer and former babbit layer form smelting
Gold combines, and bond strength is high, and it is not in obscission that the first cladding layer, which is also tightly pressed against lower section by the second cladding layer,.In addition,
First cladding layer uses biggish laser power, it is ensured that the bond strength with matrix, the second cladding layer use lesser laser function
Rate prevents scaling loss.
Further, in step (3), the first cladding layer with a thickness of 1.5-1.8mm.
Further, in step (4), laser remolten is using argon gas as protective gas, technological parameter are as follows: laser power 0.3-
1.0KW, scanning speed 3-30mm/s, shield gas flow rate 10-30L/min.
Further, in step (5), the second cladding layer with a thickness of 0.6-1mm.The bus alloy-layer of bearing shell matrix surface
Usually 2mm is thick, sets 1.5-1.8mm for the thickness of the first cladding layer, and the thickness of the second cladding layer is set as 0.6-1mm,
Guarantee to form difference in height between the first cladding layer and former babbit layer, the second cladding layer can be contacted with former babbit layer and shape
At metallurgical bonding, meanwhile, there are machining allowance.
Further, the granularity of babbit powder is 53-150 μm.
Further, it in step (6), is machined as turning or scraping.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: by being formed to laser melting coating
The first cladding layer region carry out laser remolten, then secondary laser cladding is formed and is closed simultaneously with the first cladding layer and former Pasteur
Layer gold realizes the second cladding layer of metallurgical bonding, so that, even if the first cladding layer is separated with matrix, will not go out in use process
Now whole obscission still can guarantee bearing shell normal use, prolong the service life, and does not need spraying and repair oxidant layer, save at
This.
Specific embodiment
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
Embodiment 1
A kind of restorative procedure of bearing shell, comprising the following steps:
(1) damage location of bearing shell is detected；
(2) bearing shell is cleaned, the oxidation film and greasy dirt on bearing shell surface are removed；
(3) coaxial carrier gas powder feeding technique is used, the babbit powder that granularity is 53-150 μm is sent at damage location
Laser melting coating is carried out, the first cladding layer with a thickness of 1.6mm, technological parameter are as follows: laser power 1.8KW, spot diameter are formed
2mm, scanning speed 6mm/s, powder sending quantity 4.2g/min, protective gas use argon gas, gas flow 12L/min；
(4) laser remolten is carried out to the first cladding layer region, laser remolten is using argon gas as protective gas, technological parameter are as follows:
Laser power 0.6KW, scanning speed 10mm/s, shield gas flow rate 20L/min；
(5) laser melting coating is carried out to the first cladding layer region after remelting, forms the second cladding layer with a thickness of 1mm, work
Skill parameter are as follows: laser power 0.5KW, spot diameter 2mm, scanning speed 6mm/s, powder sending quantity 4.0g/min, protective gas use
Argon gas, gas flow 12L/min；
(6) it examines and is machined, the bearing shell of required size is obtained by way of turning or scraping.After the reparation
Bearing shell comes into operation, and does not occur obscission.
Embodiment 2
A kind of restorative procedure of bearing shell, comprising the following steps:
(1) damage location of bearing shell is detected；
(2) bearing shell is cleaned, the oxidation film and greasy dirt on bearing shell surface are removed；
(3) coaxial carrier gas powder feeding technique is used, the babbit powder that granularity is 53-150 μm is sent at damage location
Laser melting coating is carried out, the first cladding layer with a thickness of 1.5mm, technological parameter are as follows: laser power 2.5KW, spot diameter are formed
3mm, scanning speed 8mm/s, powder sending quantity 4.5g/min, protective gas use argon gas, gas flow 24L/min；
(4) laser remolten is carried out to the first cladding layer region, laser remolten is using argon gas as protective gas, technological parameter are as follows:
Laser power 1.0KW, scanning speed 25mm/s, shield gas flow rate 28L/min；
(5) laser melting coating is carried out to the first cladding layer region after remelting, forms the second cladding layer with a thickness of 0.8mm,
Technological parameter are as follows: laser power 0.8KW, spot diameter 3mm, scanning speed 8mm/s, powder sending quantity 4.5g/min, protective gas are adopted
With argon gas, gas flow 25L/min；
(6) it examines and is machined, the bearing shell of required size is obtained by way of turning or scraping.After the reparation
Bearing shell comes into operation, and does not occur obscission.
Embodiment 3
A kind of restorative procedure of bearing shell, comprising the following steps:
(1) damage location of bearing shell is detected；
(2) bearing shell is cleaned, the oxidation film and greasy dirt on bearing shell surface are removed；
(3) coaxial carrier gas powder feeding technique is used, the babbit powder that granularity is 53-150 μm is sent at damage location
Laser melting coating is carried out, the first cladding layer with a thickness of 1.8mm, technological parameter are as follows: laser power 1.2KW, spot diameter are formed
2mm, scanning speed 4mm/s, powder sending quantity 3.9g/min, protective gas use argon gas, gas flow 8L/min；
(4) laser remolten is carried out to the first cladding layer region, laser remolten is using argon gas as protective gas, technological parameter are as follows:
Laser power 0.3KW, scanning speed 5mm/s, shield gas flow rate 12L/min；
(5) laser melting coating is carried out to the first cladding layer region after remelting, forms the second cladding layer with a thickness of 0.6mm,
Technological parameter are as follows: laser power 0.2KW, spot diameter 2mm, scanning speed 4mm/s, powder sending quantity 3.8g/min, protective gas are adopted
With argon gas, gas flow 8L/min；
(6) it examines and is machined, the bearing shell of required size is obtained by way of turning or scraping.After the reparation
Bearing shell comes into operation, and does not occur obscission.
It is as described above the embodiment of the present invention.The present invention is not limited to the above-described embodiments, anyone should learn that
The structure change made under the inspiration of the present invention, the technical schemes that are same or similar to the present invention each fall within this
Within the protection scope of invention.
Claims (6)
1. a kind of restorative procedure of bearing shell, which comprises the following steps:
(1) damage location of bearing shell is detected；
(2) bearing shell is cleaned, the oxidation film and greasy dirt on bearing shell surface are removed；
(3) coaxial carrier gas powder feeding technique is used, babbit powder is sent at damage location and carries out laser melting coating, forms first
Cladding layer, technological parameter are as follows: laser power 1.0-2.5KW, spot diameter 2-3mm, scanning speed 4-8mm/s, powder sending quantity 3.8-
4.5g/min, protective gas use argon gas, gas flow 5-25L/min；
(4) laser remolten is carried out to the first cladding layer region；
(5) laser melting coating is carried out to the first cladding layer region after remelting, forms the second cladding layer, technological parameter are as follows: laser function
Rate 0.1-1.0KW, spot diameter 2-3mm, scanning speed 4-8mm/s, powder sending quantity 3.8-4.5g/min, protective gas use argon
Gas, gas flow 5-25L/min；
(6) it examines and is machined.
2. a kind of preparation method of ferrous alloy bearing shell wearing layer according to claim 1, which is characterized in that the step
(3) in, the first cladding layer with a thickness of 1.5-1.8mm.
3. a kind of preparation method of ferrous alloy bearing shell wearing layer according to claim 1, which is characterized in that the step
(4) in, laser remolten is using argon gas as protective gas, technological parameter are as follows: laser power 0.3-1.0KW, scanning speed 3-30mm/s,
Shield gas flow rate 10-30L/min.
4. a kind of preparation method of ferrous alloy bearing shell wearing layer according to claim 1, which is characterized in that the step
(5) in, the second cladding layer with a thickness of 0.6-1mm.
5. a kind of preparation method of ferrous alloy bearing shell wearing layer, feature described in any one of -4 according to claim 1
It is, the granularity of the babbit powder is 53-150 μm.
6. a kind of preparation method of ferrous alloy bearing shell wearing layer according to claim 1, which is characterized in that the step
(6) it in, is machined as turning or scraping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333490.1A CN109112536A (en) | 2018-11-09 | 2018-11-09 | A kind of restorative procedure of bearing shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333490.1A CN109112536A (en) | 2018-11-09 | 2018-11-09 | A kind of restorative procedure of bearing shell |
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| CN109112536A true CN109112536A (en) | 2019-01-01 |
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| CN201811333490.1A Pending CN109112536A (en) | 2018-11-09 | 2018-11-09 | A kind of restorative procedure of bearing shell |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144490A (en) * | 2019-06-21 | 2019-08-20 | 燕山大学 | A kind of compound copper bush of base steel and preparation method thereof |
| CN110846652A (en) * | 2019-10-21 | 2020-02-28 | 神华铁路货车运输有限责任公司 | Axle repair method and remanufactured axle |
| CN110938819A (en) * | 2019-12-31 | 2020-03-31 | 北京交通大学 | Laser processing method for improving performance of cladding layer |
| CN111850546A (en) * | 2020-06-28 | 2020-10-30 | 华中科技大学 | Method for repairing nickel-aluminum bronze part through laser cladding and product thereof |
| CN112536447A (en) * | 2020-11-30 | 2021-03-23 | 申科滑动轴承股份有限公司 | 3D laser cladding additive manufacturing process based on bearing bush alloy layer |
| CN112877689A (en) * | 2021-02-08 | 2021-06-01 | 浙江工业大学 | Process for repairing surface defects of metal parts through full-angle posture of laser cladding head |
| CN112981395A (en) * | 2021-02-18 | 2021-06-18 | 中国长江电力股份有限公司 | Thrust pad repairing method based on laser cladding process |
| CN113084128A (en) * | 2021-04-07 | 2021-07-09 | 哈尔滨汽轮机厂有限责任公司 | Repairing method of bearing bush Babbitt alloy layer of bimetallic sliding bearing |
| CN113737176A (en) * | 2021-09-15 | 2021-12-03 | 湖南崇德科技股份有限公司 | Manufacturing method of wind power sliding bearing |
| CN115319101A (en) * | 2022-08-27 | 2022-11-11 | 中国长江电力股份有限公司 | Method for repairing Babbitt metal tile through laser cladding |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144490A (en) * | 2019-06-21 | 2019-08-20 | 燕山大学 | A kind of compound copper bush of base steel and preparation method thereof |
| CN110846652B (en) * | 2019-10-21 | 2021-11-23 | 神华铁路装备有限责任公司 | Axle repair method and remanufactured axle |
| CN110846652A (en) * | 2019-10-21 | 2020-02-28 | 神华铁路货车运输有限责任公司 | Axle repair method and remanufactured axle |
| CN110938819A (en) * | 2019-12-31 | 2020-03-31 | 北京交通大学 | Laser processing method for improving performance of cladding layer |
| CN111850546A (en) * | 2020-06-28 | 2020-10-30 | 华中科技大学 | Method for repairing nickel-aluminum bronze part through laser cladding and product thereof |
| CN112536447A (en) * | 2020-11-30 | 2021-03-23 | 申科滑动轴承股份有限公司 | 3D laser cladding additive manufacturing process based on bearing bush alloy layer |
| CN112877689A (en) * | 2021-02-08 | 2021-06-01 | 浙江工业大学 | Process for repairing surface defects of metal parts through full-angle posture of laser cladding head |
| CN112981395A (en) * | 2021-02-18 | 2021-06-18 | 中国长江电力股份有限公司 | Thrust pad repairing method based on laser cladding process |
| CN113084128A (en) * | 2021-04-07 | 2021-07-09 | 哈尔滨汽轮机厂有限责任公司 | Repairing method of bearing bush Babbitt alloy layer of bimetallic sliding bearing |
| CN113737176A (en) * | 2021-09-15 | 2021-12-03 | 湖南崇德科技股份有限公司 | Manufacturing method of wind power sliding bearing |
| CN113737176B (en) * | 2021-09-15 | 2023-08-18 | 湖南崇德科技股份有限公司 | Manufacturing method of wind power sliding bearing |
| CN115319101A (en) * | 2022-08-27 | 2022-11-11 | 中国长江电力股份有限公司 | Method for repairing Babbitt metal tile through laser cladding |
| CN115319101B (en) * | 2022-08-27 | 2023-06-13 | 中国长江电力股份有限公司 | Method for repairing Babbitt metal tile by laser cladding |
| WO2024045667A1 (en) * | 2022-08-27 | 2024-03-07 | 中国长江电力股份有限公司 | Method for repairing babbitt metal bearing by means of laser cladding |
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