CN106702374A - Method for laser cladding of abrasion resisting coating on aluminum alloy - Google Patents
Method for laser cladding of abrasion resisting coating on aluminum alloy Download PDFInfo
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- CN106702374A CN106702374A CN201611015223.0A CN201611015223A CN106702374A CN 106702374 A CN106702374 A CN 106702374A CN 201611015223 A CN201611015223 A CN 201611015223A CN 106702374 A CN106702374 A CN 106702374A
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- Prior art keywords
- aluminum alloy
- cladding
- base material
- coating
- laser
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Classifications
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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
Abstract
The invention discloses a method for laser cladding of an abrasion resisting coating on an aluminum alloy. The method comprises the steps that firstly, an aluminum alloy base material is subjected to sand blasting roughening treatment, and roughness is larger than Ra25; secondly, surface impurities of the aluminum alloy base material obtained after sand blasting roughening treatment are removed; thirdly, composite powder including 10-15 wt% of Si, 4-10 wt% of Al2O3, 1-5wt% of Cu and the balance aluminum is evenly mixed, and pulp is prepared after grinding; fourthly, the surface of the aluminum alloy base material is evenly coated with the pulp, and drying is conducted at the temperature ranging from 100 DEG C to 140 DEG C; and fifthly, laser cladding is adopted, the laser power of the laser cladding is 2-10 kW, the light spot width is 3-10 mm, the scanning speed is 2-5 mm/s, cladding is conducted, and the Si-Al2O3-Cu-Al abrasion resisting coating arranged on the surface of the aluminum alloy in a cladding manner is obtained. According to the method, through laser cladding, the Si-Al2O3-Cu-Al abrasion resisting coating is arranged on the surface of the aluminum alloy in the cladding manner, the hardness of the aluminum alloy is larger than 295HV0.2, and compared with the performance of a base body, the performance of the aluminum alloy is improved by four or more times. The abrasion resisting performance of the aluminum alloy is greatly improved.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of aluminium alloy laser melting coating Si-Al2O3The wear-resisting paintings of-Cu-Al
The method of layer.
Background technology
The research that material subject scholar and engineers and technicians are deepened continuously to alumina-base material always, alumina-base material
Modified aluminium alloy and aluminum matrix composite are developed into by traditional cast aluminium alloy gold.Aluminum matrix composite causes the wear-resisting of aluminium alloy
The comprehensive mechanical performance such as property and intensity is to increasing substantially.However, alumina-base material fusing point is low, hardness is low and wear no resistance lack
Fall into still without obtain it is basic overcome, which greatly limits the range of application of aluminium alloy.For many years, in order to overcome aluminium
The deficiency of alloy, the bulk modified and surface of aluminium alloy is modified the direction that always people make great efforts.
Laser melting and coating technique has the excellent properties of lot of advantages and laser cladding coating, and scholars and technical staff are equal
It is furtherd investigate constantly, constantly opens up its application field.With material science, computer application science, from
The development of dynamic control technology and laser melting and coating technique itself, laser melting and coating technique has obtained application in many aspects of industrial circle
Or there is huge potential application.
Expected by the heterogeneous village in common material surface laser cladding with particular characteristic, can obtained with particular characteristic
High-quality coating, reach to common material surface be modified purpose, elongated component service life, expand common material use
Scope.This surface is modified including improving the intensity of material surface, wearability, corrosion resistance (including acid, alkali, salt corrosion and gas
Body corrodes) and heat-resisting quantity etc..
But aluminium alloy is easily oxidized in atmosphere, in Surface Creation layer oxide film.The oxide-film of aluminum alloy surface
Fusing point is very high, is difficult fusing, and its proportion is bigger than aluminium, thus will sink in the molten bath that laser melting coating is produced, on interface
Formation is mingled with or stomata, influences cladding quality.Want to obtain high-quality coating, just want method and try one's best removing oxide-film.
Al is removed at present2O3Method have Mechanical Method, from slag making element method and synthesis etc..In this several method, synthesis is operated more
Complexity, is not suitable with large-scale production application, is mainly limited to laboratory research；Mechanical Method because its is simple to operate, using compared with
Extensively, but go oxide film dissolving not thorough, effect is undesirable；Being succeeded in the industrial production at present from slag making element method should
With.Therefore aluminum alloy surface carries out laser melting coating and also has the defect for being difficult to overcome.
The content of the invention
It is an object of the invention to propose a kind of method of aluminium alloy laser fusing and coating wear-resistant coating, aluminium conjunction can be greatly improved
The anti-wear performance of gold.
Earlier application of the invention proposes a kind of a kind of " side of aluminium alloy laser melting coating Si-Cr-B-W-Al wear-resistant coatings
Method ", it substantially increases the anti-wear performance of aluminium alloy in one layer of Si-Cr-B-W-Al wear-resistant coating of aluminum alloy surface cladding.But
Because it uses W, its processing difficulties, melt blending there is also certain difficulty, therefore the present invention makes improvements, and is replaced with finding
Change the material of W.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of method of aluminium alloy laser fusing and coating wear-resistant coating, it includes：
(1) by aluminum alloy base material sandblasting roughening treatment, roughness is more than Ra25；
(2) aluminum alloy base material after sandblasting roughening treatment is removed into surface impurity；
(3) by 10-15wt%Si, 4-10wt%Al2O3, 1-5wt%Cu and balance aluminum composite powder be well mixed, grind
Slurry is deployed into after mill；
(4) slurry is uniformly coated on aluminum alloy base material surface, is dried at 100-140 DEG C；
(5) laser melting coating is used, its laser power is 2-10kW, spot width 3-10mm, sweep speed 2-5mm/s, is incited somebody to action
The cladding, obtains cladding in the Si-Al of aluminum alloy surface2O3- Cu-Al wear-resistant coatings.
In coating of the invention, the addition of copper so that alloy has excellent antifriction function, while being closed in cladding layer and aluminium
Golden substrate surface forms the intermetallic compound Al of stabilization2Cu and Al2Cu3Deng, there is provided excellent bond strength.
The present invention passes through laser melting coating, in one layer of Si-Al of aluminum alloy surface cladding2O3- Cu-Al wear-resistant coatings, its hardness is big
In 295HV0.2, more than 4 times are improved compared with aluminum matrix alloy performance.Considerably increase the anti-wear performance of aluminium alloy.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of aluminium alloy laser melting coating Si-Al2O3The method of-Cu-Al wear-resistant coatings, it includes：
(1) by aluminum alloy base material sandblasting roughening treatment, roughness is more than Ra25；
(2) aluminum alloy base material after sandblasting roughening treatment is removed into surface impurity；
(3) by 10wt%Si, 4wt%Al2O3, 1wt%Cu and balance aluminum composite powder be well mixed, allocated after grinding
Into slurry；
(4) slurry is uniformly coated on aluminum alloy base material surface, is dried at 100 DEG C；
(5) laser melting coating is used, its laser power is 2kW, spot width 3mm, sweep speed 2mm/s, by the cladding,
Cladding is obtained in the Si-Al of aluminum alloy surface2O3- Cu-Al wear-resistant coatings.
The present invention passes through laser melting coating, in one layer of Si-Al of aluminum alloy surface cladding2O3- Cu-Al wear-resistant coatings, its hardness is
298HV0.2。
Embodiment 2
A kind of aluminium alloy laser melting coating Si-Al2O3The method of-Cu-Al wear-resistant coatings, it includes：
(1) by aluminum alloy base material sandblasting roughening treatment, roughness is more than Ra25；
(2) aluminum alloy base material after sandblasting roughening treatment is removed into surface impurity；
(3) by 15wt%Si, 10wt%Al2O3, 5wt%Cu and balance aluminum composite powder be well mixed, allocated after grinding
Into slurry；
(4) slurry is uniformly coated on aluminum alloy base material surface, is dried at 140 DEG C；
(5) laser melting coating is used, its laser power is 10kW, spot width 10mm, sweep speed 5mm/s, described will be melted
Cover, obtain cladding in the Si-Al of aluminum alloy surface2O3- Cu-Al wear-resistant coatings.
The present invention passes through laser melting coating, in one layer of Si-Al of aluminum alloy surface cladding2O3- Cu-Al wear-resistant coatings, its hardness position
297HV0.2。
Embodiment 3
A kind of aluminium alloy laser melting coating Si-Al2O3The method of-Cu-Al wear-resistant coatings, it includes：
(1) by aluminum alloy base material sandblasting roughening treatment, roughness is more than Ra25；
(2) aluminum alloy base material after sandblasting roughening treatment is removed into surface impurity；
(3) by 13wt%Si, 7wt%Al2O3, 3wt%Cu and balance aluminum composite powder be well mixed, allocated after grinding
Into slurry；
(4) slurry is uniformly coated on aluminum alloy base material surface, is dried at 100 DEG C；
(5) laser melting coating is used, its laser power is 6kW, spot width 4mm, sweep speed 3mm/s, by the cladding,
Cladding is obtained in the Si-Al of aluminum alloy surface2O3- Cu-Al wear-resistant coatings.
The present invention passes through laser melting coating, in one layer of Si-Al of aluminum alloy surface cladding2O3- Cu-Al wear-resistant coatings, its hardness is big
In 302HV0.2。
Embodiment 4
A kind of aluminium alloy laser melting coating Si-Al2O3The method of-Cu-Al wear-resistant coatings, it includes：
(1) by aluminum alloy base material sandblasting roughening treatment, roughness is more than Ra25；
(2) aluminum alloy base material after sandblasting roughening treatment is removed into surface impurity；
(3) by 14wt%Si, 5wt%Al2O3, 3wt%Cu and balance aluminum composite powder be well mixed, allocated after grinding
Into slurry；
(4) slurry is uniformly coated on aluminum alloy base material surface, is dried at 110 DEG C；
(5) laser melting coating is used, its laser power is 8kW, spot width 6mm, sweep speed 3mm/s, by the cladding,
Cladding is obtained in the Si-Al of aluminum alloy surface2O3- Cu-Al wear-resistant coatings.
The present invention passes through laser melting coating, in one layer of Si-Al of aluminum alloy surface cladding2O3- Cu-Al wear-resistant coatings, its hardness is big
In 306HV0.2。
Claims (1)
1. a kind of method of aluminium alloy laser fusing and coating wear-resistant coating, it includes：
(1) by aluminum alloy base material sandblasting roughening treatment, roughness is more than Ra25；
(2) aluminum alloy base material after sandblasting roughening treatment is removed into surface impurity；
(3) by 10-15wt%Si, 4-10wt%Al2O3, 1-5wt%Cu and balance aluminum composite powder be well mixed, after grinding
It is deployed into slurry；
(4) slurry is uniformly coated on aluminum alloy base material surface, is dried at 100-140 DEG C；
(5) laser melting coating is used, its laser power is 2-10kW, spot width 3-10mm, sweep speed 2-5mm/s, by described in
Cladding, obtains cladding in the Si-Al of aluminum alloy surface2O3- Cu-Al wear-resistant coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015223.0A CN106702374A (en) | 2016-11-18 | 2016-11-18 | Method for laser cladding of abrasion resisting coating on aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015223.0A CN106702374A (en) | 2016-11-18 | 2016-11-18 | Method for laser cladding of abrasion resisting coating on aluminum alloy |
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| CN106702374A true CN106702374A (en) | 2017-05-24 |
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| CN201611015223.0A Pending CN106702374A (en) | 2016-11-18 | 2016-11-18 | Method for laser cladding of abrasion resisting coating on aluminum alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552001A (en) * | 2018-06-04 | 2019-12-10 | 江苏威力幕墙系统工程有限公司 | Surface treatment process of aluminum alloy section |
| CN110552002A (en) * | 2018-06-04 | 2019-12-10 | 江苏威力幕墙系统工程有限公司 | Surface hardening method of aluminum alloy pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618866A (en) * | 2012-02-23 | 2012-08-01 | 山东大学 | Method for reinforcing laser cladding layer on surface of titanium alloy |
-
2016
- 2016-11-18 CN CN201611015223.0A patent/CN106702374A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618866A (en) * | 2012-02-23 | 2012-08-01 | 山东大学 | Method for reinforcing laser cladding layer on surface of titanium alloy |
Non-Patent Citations (2)
| Title |
|---|
| 戴达煌等: "《功能薄膜及其沉积制备技术》", 31 January 2013 * |
| 旷云峰: "铝合金表面激光熔覆AlFeMnSi系多主元合金涂层的组织与性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552001A (en) * | 2018-06-04 | 2019-12-10 | 江苏威力幕墙系统工程有限公司 | Surface treatment process of aluminum alloy section |
| CN110552002A (en) * | 2018-06-04 | 2019-12-10 | 江苏威力幕墙系统工程有限公司 | Surface hardening method of aluminum alloy pipe |
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