CN109338358A - A kind of ultrasonic burnishing strengthens the renovation technique of Axle Surface laser cladding layer - Google Patents
A kind of ultrasonic burnishing strengthens the renovation technique of Axle Surface laser cladding layer Download PDFInfo
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- CN109338358A CN109338358A CN201811490927.2A CN201811490927A CN109338358A CN 109338358 A CN109338358 A CN 109338358A CN 201811490927 A CN201811490927 A CN 201811490927A CN 109338358 A CN109338358 A CN 109338358A
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- cladding layer
- ultrasonic burnishing
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- renovation technique
- diameter
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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
- C23C24/106—Coating with metal alloys or metal elements only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of renovation techniques of ultrasonic burnishing intensive treatment axis outer round surface laser cladding layer, belong to axial workpiece reparation and reinforcement process, it specifically includes: to remove the impurity on surface so that cladding layer and matrix have preferable bond strength, first time turnery processing first is carried out to the axis surface to be repaired, remove a certain amount of outer circle surface layer, then carry out laser melting coating, the diameter of laser melting coating rear axle is larger than the axis surface diameter finally repaired, then second of turnery processing is carried out to cladding surface, ultrasonic burnishing is finally carried out to strengthen to form final reparation diameter.Operation of the present invention is simple, and repair layer hardness is high, and repair layer and matrix form good metallurgical bonding, not will cause and falls off；And surface layer grain is tiny after ultrasonic burnishing, and forms biggish residual compressive stress to improve its fatigue behaviour, and the axis can be the agitating shaft that stirring action is played in mining machinery.
Description
Technical field
The present invention relates to axial workpiece reparation and reinforcement technique fields, more particularly relate to ultrasonic burnishing and strengthen axial workpiece
The renovation technique of surface laser cladding layer.
Background technique
Laser melting and coating technique is a kind of effective re-manufacturing technology.It by with different adding material modes by cladding
The coating material that is selected is placed on matrix surface and is allowed to and matrix surface a thin layer while melting through laser irradiation, and fast rapid hardening
It is extremely low that Gu dilution is formed after, with matrix at the surface covering of metallurgical bonding, significantly improves the wear-resisting, anti-corrosion, resistance to of substrate surface
Hot, anti-oxidant and electrical characteristic process had both been met to achieve the purpose that surface is modified or repairs to material surface
The requirement of particular characteristic, and saved a large amount of noble element.The technology has microstructure of surface cladding layer densification, shapes fast, production week
Phase is short, realizes material gradient function, the advantages that high controllability of flexibility degree is good, therefore application prospect is very wide.
The agitating shaft of stirring action is played in mining machinery, bearing position is easy to happen abrasion, surface quality and dimensional accuracy
Requirement is not achieved, causes machine operation unsmooth, or even causes off-axis or more serious mechanical accident.Therefore needs pair
Its surface reconditioning makes it meet size and requires and using the requirement such as required wearability, hardness.Currently used renovation technique is
It selects corresponding powder to carry out laser melting coating to its surface according to requirements, reaches corresponding requirement.But this method
The surface fatigue performance of reparation is poor.
Ultrasonic burnishing be using metal at normal temperature cold plasticity the characteristics of, with ultrasonic wave to metal surface carry out without grinding
The grinding of machine makes metal parts surface reach more preferably surface roughness requirements；Ideal pressure is generated in piece surface simultaneously
Stress improves the microhardness of piece surface, wearability and fatigue strength and fatigue life.
Summary of the invention
Goal of the invention: the purpose of the present invention is to provide a kind of ultrasonic burnishings to strengthen Axle Surface laser cladding layer
Renovation technique can improve surface roughness, the hardness of material, improve the wearability and corrosion resistance of material；And it improves tired
Labor intensity.
Technical scheme is as follows:
The present invention provides a kind of ultrasonic burnishing strengthen Axle Surface laser cladding layer renovation technique,
S1: first time turnery processing is carried out to the axis outer round surface that needs are repaired, removes a certain amount of outer circle surface layer；
S2: Laser Cladding Treatment is carried out to the axis after first time turnery processing, forms cladding layer, the diameter of the cladding layer
It is larger than the axis outside diameter finally repaired；
S3: second of turnery processing is carried out to cladding layer；
S4: ultrasonic burnishing intensive treatment is carried out to the cladding layer after second of turnery processing, it is straight to form required reparation
Diameter.
In preferably technical solution of the invention, the first time turnery processing completely removes the impurity of axis outer round surface.
In the preferably technical solution of the invention, the cladding layer diameter of the laser melting coating rear axle, which is slightly larger than, finally to be repaired
Axis surface diameter.
In preferably technical solution of the invention, the first time turning revolving speed 180-220r/min, amount of feeding 0.3-
0.5mm/r, cutting output 0.3-0.5mm.
In preferably technical solution of the invention, described matrix material is 45 steel, and cladding powder is 316L austenite stainless
Steel, 100-150 microns of powder size.
In preferably technical solution of the invention, the laser power 1.8-2.0KW, powder disk rotating speed is 2.0-2.4r/
Min, powder sending quantity determine that cladding thickness can be adjusted, air pressure 5.0- if you need to change powder sending quantity by two above parameter
5.5Q/min, argon gas is as protection gas, flow 10-15L/min, focal length (distance of finished surface to laser head) 58-
64mm, it is 4mm, overlapping rate 40-55% that spot diameter, which is greater than,.
In preferably technical solution of the invention, second of the turning revolving speed 180-220r/min, the amount of feeding is about
0.3mm/r, cutting output 0.2-0.3mm.
In preferably technical solution of the invention, extrusion deformation degree is 0.06~0.1N, rolling in the ultrasonic burnishing reinforcing
Pressure speed is 110~140m/min, and axle revolving speed is 100~120/min, and feed speed is 0.1~0.3mm/min, is rolled cold
But liquid is the dedicated cutting fluid of stainless steel.
The invention has the benefit that
Compared with traditional laser melting coating repairs the technique on surface, the present invention provides restorative procedure, increases ultrasonic burnishing
Technique, the technique can be in the final aplitic texture layers repaired one layer of surface formation and be different from basis material, the aplitic texture layer
Crystallite dimension be significantly less than the crystallite dimension of basis material；
Aplitic texture layer formation not only improve material surface roughness, hardness, can also improve material wearability and
Corrosion resistance.In addition to this, which generates ideal compression in piece surface, greatly improves its fatigue strength；
Operation of the present invention is simple, and repair layer hardness is high, and repair layer and matrix form good metallurgical bonding, not will cause de-
It falls；And surface layer grain is tiny after ultrasonic burnishing, and forms biggish residual compressive stress to improve its fatigue behaviour.
Detailed description of the invention
Fig. 1 is the step schematic diagram that surface reconditioning of the invention improves technique；
Fig. 2 is conventional laser melting and coating process schematic illustration；
Fig. 3 is ultrasonic burnishing schematic illustration；
Fig. 4 is the cladding surface layer metallographic structure that conventional method reparation is respectively adopted；
Fig. 5 is the cladding surface layer metallographic structure of ultrasonic burnishing intensifying method reparation；
Fig. 6 is grain size (A1 is traditional restorative procedure, and A2 is ultrasonic burnishing strengthening repair method)；
Fig. 7 is roughness；
Fig. 8 is microhardness (A1 is traditional restorative procedure, and A2 is ultrasonic burnishing strengthening repair method).
Appended drawing reference:
1-laser beam；2-powder streams；3-molten baths；4-cladding layers；5-fusion areas；6-heat affected areas；7-matrixes；
8-workpiece；9-rolling work heads；10-amplitude transformers；11-piezoelectric ceramic transducers；12-apply static pressure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Below and pass through specific embodiment to further illustrate the technical scheme of the present invention.
Embodiment 1 provides a kind of renovation technique of ultrasonic burnishing reinforcing Axle Surface laser cladding layer:
In embodiments of the present invention, the object to be repaired is one kind of mining machinery agitating shaft, and material is 45 steel, main
Want alloying element content are as follows: C:0.42~0.50, Si:0.17~0.37, Mn:0.50~0.80, Cr≤0.25, Ni≤0.30Cu
≤0.25；The visible noticeable wear in its surface.
Specifically carry out in accordance with the following steps:
S1 carries out first time turnery processing (rough turn) to the axis outer round surface to be repaired, removes a certain amount of outer circle surface layer；
Rough turn to the progress of the axis outer round surface to be repaired, rough turn revolving speed is 180-220r/min, amount of feeding 0.3-0.5mm/r, cutting
Measure 0.3-0.5mm；
The thickness of S2, laser melting coating, laser melting coating can be adjusted according to specific requirement；Cladding layer with a thickness of 1.0mm,
Laser power 1.8-2.0KW, powder disk rotating speed are that (powder sending quantity determines that cladding thickness can if you need to change powder sending quantity to 2.0-2.4r/min
It is adjusted by two above parameter), air pressure 5.0-5.5Q/min, for argon gas as protection gas, air-flow 10-15L/min is burnt
Away from (distance of finished surface to laser head) 58-64mm, it is 4mm, overlapping rate 40-55% that spot diameter, which is greater than,.At laser melting coating
After reason, the diameter of cladding layer is larger than the axis surface diameter finally repaired, and can reach required to ensure to repair step after the completion
Reparation diameter；
S3 carries out second of turnery processing (smart car) processing to cladding layer, removes the coarse table formed by laser melting coating
Face.Smart car revolving speed 180-220r/min, the amount of feeding about 0.3mm/r, cutting output 0.2-0.3mm；Cutting output herein is considered as
It also will cause the reduction of shaft size to subsequent ultrasonic burnishing；
S4 carries out ultrasonic burnishing intensive treatment to the cladding layer after second of turnery processing, forms final reparation diameter,
Ultrasonic burnishing extrusion deformation degree is 0.06~0.1N, and rolling speed is 110~140m/min, and axle revolving speed is 100~120/
Min, feed speed are 0.1~0.3mm/min, and rolling coolant liquid is the dedicated cutting fluid of stainless steel, are caused after ultrasonic burnishing
Size reduces 0.01-0.02mm.It is reduced because ultrasonic burnishing will cause size, so ultrasonic burnishing extrusion deformation degree should be in conjunction with manufacture
It error and is determined using size by technical staff.
Mining machinery axis outer round surface is repaired according to the method described above, the testing result of reparation is as follows:
A, the residual stress on the axis surface that conventional method and the present invention repair is detected respectively, the former residual stress is about
450MPa, the latter's residual stress about -340MPa；
B, metallographic analysis results such as Fig. 6, crystallite dimension such as Fig. 7, the results showed that there are bright for the surface after ultrasonic burnishing
Aobvious crystal grain refinement layer, crystallite dimension reduce by 65%, far superior to conventional method than matrix；
C, surface roughness such as Fig. 4 and Fig. 5, compared with the surface of conventional method reparation, method reparation provided by the invention
Surface roughness it is integrally lower, and be distributed it is more uniform；
D, the surface microhardness of microhardness such as Fig. 8, renovation technique reparation provided by the invention are integrally higher than tradition side
Method.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. the renovation technique that a kind of ultrasonic burnishing strengthens Axle Surface laser cladding layer, which is characterized in that
S1: first time turnery processing is carried out to the axis outer round surface that needs are repaired, removes a certain amount of outer circle surface layer；
S2: Laser Cladding Treatment is carried out to the axis after first time turnery processing, forms cladding layer, the diameter outline of the cladding layer
Greater than the axis outside diameter finally repaired；
S3: second of turnery processing is carried out to cladding layer；
S4: ultrasonic burnishing intensive treatment is carried out to the cladding layer after second of turnery processing, forms required reparation diameter.
2. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
The first time turnery processing completely removes the impurity of axis outer round surface.
3. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
The cladding layer diameter of the laser melting coating rear axle is slightly larger than the axis surface diameter finally repaired.
4. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
The first time turning revolving speed 180-220r/min, amount of feeding 0.3-0.5mm/r, cutting output 0.3-0.5mm.
5. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
Described matrix material be 45 steel, cladding powder be 316L austenitic stainless steel, 100-150 microns of powder size.
6. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
The laser power 1.8-2.0KW, powder disk rotating speed are 2.0-2.4r/min, air pressure 5.0-5.5Q/min, argon gas conduct
Gas, flow 10-15L/min, focal length 58-64mm are protected, it is 4mm, overlapping rate 40-55% that spot diameter, which is greater than,.
7. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
Second of the turning revolving speed 180-220r/min, the amount of feeding about 0.3mm/r, cutting output 0.2-0.3mm.
8. ultrasonic burnishing according to claim 1 strengthens the renovation technique of Axle Surface laser cladding layer, feature
It is:
Extrusion deformation degree is 0.06~0.1N in the ultrasonic burnishing reinforcing, and rolling speed is 110~140m/min, axle revolving speed
For 100~120/min, feed speed is 0.1~0.3mm/min, and rolling coolant liquid is the dedicated cutting fluid of stainless steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490927.2A CN109338358A (en) | 2018-12-07 | 2018-12-07 | A kind of ultrasonic burnishing strengthens the renovation technique of Axle Surface laser cladding layer |
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| CN201811490927.2A CN109338358A (en) | 2018-12-07 | 2018-12-07 | A kind of ultrasonic burnishing strengthens the renovation technique of Axle Surface laser cladding layer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052779A (en) * | 2019-05-07 | 2019-07-26 | 齐鲁工业大学 | Axial workpiece high performance surface composite strengthening method |
| CN110804751A (en) * | 2019-10-14 | 2020-02-18 | 平高集团有限公司 | Pretreatment method for preparing metal coating on surface of cast metal piece, cast metal piece metal coating part and preparation method thereof |
| CN110835754A (en) * | 2019-09-30 | 2020-02-25 | 太原理工大学 | Preparation method of high-entropy alloy coating on surface of carbon steel |
| CN111203715A (en) * | 2020-01-15 | 2020-05-29 | 师新杰 | Method and device for machining metal surface |
| CN111254422A (en) * | 2019-07-11 | 2020-06-09 | 齐鲁工业大学 | Circular ring type surface composite strengthening method |
| CN111687639A (en) * | 2020-06-19 | 2020-09-22 | 中国矿业大学 | Long-size excircle surface high-speed laser cladding and post-processing device and method |
| CN111975297A (en) * | 2020-08-14 | 2020-11-24 | 中国人民解放军陆军装甲兵学院 | Preparation and rolling post-treatment strengthening process for high-energy micro-arc deposition layer on surface of copper alloy |
| CN112795918A (en) * | 2021-02-01 | 2021-05-14 | 福州大学 | H13 die steel repairing and remanufacturing method and device |
| CN113001098A (en) * | 2021-03-03 | 2021-06-22 | 中国人民解放军陆军装甲兵学院 | Electric spark deposition-ultrasonic rolling composite repairing method for surface damage of metal part |
| CN114147236A (en) * | 2021-11-30 | 2022-03-08 | 大连海事大学 | Method for manufacturing stainless steel through ultrasonic rolling and strengthening laser additive |
| CN114682800A (en) * | 2022-05-31 | 2022-07-01 | 太原理工大学 | Method for manufacturing eutectic high-entropy alloy plate by ultrasonic rolling surface strengthening laser additive |
| US11661861B2 (en) | 2021-03-03 | 2023-05-30 | Garrett Transportation I Inc. | Bi-metal variable geometry turbocharger vanes and methods for manufacturing the same using laser cladding |
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| CN104831271A (en) * | 2015-05-09 | 2015-08-12 | 芜湖鼎恒材料技术有限公司 | Laser hot cladding process of shaft-type component |
| CN107400887A (en) * | 2017-08-11 | 2017-11-28 | 江苏大学 | A kind of method that ultrasonic burnishing strengthens laser cladding layer |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052779A (en) * | 2019-05-07 | 2019-07-26 | 齐鲁工业大学 | Axial workpiece high performance surface composite strengthening method |
| CN111254422A (en) * | 2019-07-11 | 2020-06-09 | 齐鲁工业大学 | Circular ring type surface composite strengthening method |
| CN110835754A (en) * | 2019-09-30 | 2020-02-25 | 太原理工大学 | Preparation method of high-entropy alloy coating on surface of carbon steel |
| CN110804751A (en) * | 2019-10-14 | 2020-02-18 | 平高集团有限公司 | Pretreatment method for preparing metal coating on surface of cast metal piece, cast metal piece metal coating part and preparation method thereof |
| CN111203715A (en) * | 2020-01-15 | 2020-05-29 | 师新杰 | Method and device for machining metal surface |
| CN111687639B (en) * | 2020-06-19 | 2022-05-27 | 中国矿业大学 | Long-size excircle surface high-speed laser cladding and post-processing device and method |
| CN111687639A (en) * | 2020-06-19 | 2020-09-22 | 中国矿业大学 | Long-size excircle surface high-speed laser cladding and post-processing device and method |
| CN111975297A (en) * | 2020-08-14 | 2020-11-24 | 中国人民解放军陆军装甲兵学院 | Preparation and rolling post-treatment strengthening process for high-energy micro-arc deposition layer on surface of copper alloy |
| CN112795918A (en) * | 2021-02-01 | 2021-05-14 | 福州大学 | H13 die steel repairing and remanufacturing method and device |
| CN113001098A (en) * | 2021-03-03 | 2021-06-22 | 中国人民解放军陆军装甲兵学院 | Electric spark deposition-ultrasonic rolling composite repairing method for surface damage of metal part |
| US11661861B2 (en) | 2021-03-03 | 2023-05-30 | Garrett Transportation I Inc. | Bi-metal variable geometry turbocharger vanes and methods for manufacturing the same using laser cladding |
| CN114147236A (en) * | 2021-11-30 | 2022-03-08 | 大连海事大学 | Method for manufacturing stainless steel through ultrasonic rolling and strengthening laser additive |
| CN114682800A (en) * | 2022-05-31 | 2022-07-01 | 太原理工大学 | Method for manufacturing eutectic high-entropy alloy plate by ultrasonic rolling surface strengthening laser additive |
| CN114682800B (en) * | 2022-05-31 | 2022-09-06 | 太原理工大学 | Method for manufacturing eutectic high-entropy alloy plate by ultrasonic rolling surface strengthening laser additive |
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Application publication date: 20190215 |