CN104775118B - A kind of laser cladding powder pre-setting method - Google Patents
A kind of laser cladding powder pre-setting method Download PDFInfo
- Publication number
- CN104775118B CN104775118B CN201510221507.4A CN201510221507A CN104775118B CN 104775118 B CN104775118 B CN 104775118B CN 201510221507 A CN201510221507 A CN 201510221507A CN 104775118 B CN104775118 B CN 104775118B
- Authority
- CN
- China
- Prior art keywords
- cladding
- powder
- workpiece
- laser
- cladding powder
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- 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)
Abstract
The invention discloses a kind of laser cladding powder pre-setting methods, belong to laser melting and coating technique field.The method step is as follows：(1) surface for treating cladding workpiece is pre-processed, and cleans up the dust, grease and corrosion of workpiece surface；(2) back side for treating cladding workpiece is made to act on uniform magnetic field, using electric spray gun to treating that cladding workpiece surface uniformly sprays cladding powder, cladding powder is adsorbed under magnetic fields treats cladding workpiece surface, that is, realizes that laser cladding powder is preset.The laser cladding powder pre-setting method is simple and convenient to operate, and suitable for complicated shape and the workpiece of non-aqueous placing flat, the powder initialization layer formed is uniform.
Description
Technical field
The present invention relates to a kind of laser cladding powder pre-setting methods, belong to laser melting and coating technique field.
Background technology
Nearly half a century, early start are the U.S. using laser melting and coating technique for laser melting and coating technique development, and AVCO is public
Department easy-abrasion part has been carried out for the first time experiment and it is successful.Rolls.Royce companies of later Britain utilize laser melting coating skill
Art one layer of Co based alloy protective coating of cladding on engine blade, by testing cladding layer hardness and wearability, changes well
It has been apt to the surface property of cladding layer.Laser melting and coating technique generates huge economic benefit.Therefore, the laser in many production fields
Deposition technology enjoys great popularity, and development potentiality is very big.
Laser melting and coating technique is the technology being modified to material surface, be widely used to piece surface microstructure and
Ingredient is improved, to improve the performances such as its wearability, corrosion resistance, inoxidizability.As most important in laser surface modification field
One of technology, laser cladding technology is not restricted by basis material, is a kind of cost-effective hand of improved materials surface property
Section, it utilizes the high-energy of laser light source, by given alloy powder and matrix surface formed complicated physical and chemical process and
Rapid solidification forms in matrix surface and combines fine and close metallurgical coating.With traditional surface-coating technology, as thermal spraying,
The technologies such as plasma cladding are compared, and laser melting coating has that heat affected area is small, and heat type variable is small, and cladding layer and substrate are combined into smelting
The advantages that gold combines.It is a large amount of valuable to save that laser melting and coating technique can prepare high performance face coat on inexpensive matrix
The materials such as alloy, rare metal significantly reduce cost of manufacture, and this technology consumptive material is few, pollution is small, belongs to green processing skill
Art.The commercial Applications such as automobile, aviation, die rolls are can be widely applied to, there is significant economic benefit and development potentiality.
Laser melting and coating technique has following process characteristic：1. local surface layer is primarily due to the heat affecting very little of matrix
Laser action, cladding powder and the rapid cladding of matrix.Small range cladding easy to implement, and workpiece is unlikely to deform, cladding yield rate
It is higher.2. cladding layer crystal grain is tiny and even dispersion is distributed in the base, cladding layer hardness is very high, and wear-resisting and corrosion-resistant etc.
Performance is strong.So as to greatly improve the various performances of material surface.3. the time that high energy laser beam acts on matrix is very short and molten
Coating dilution rate is low, therefore base material fusing amount is small.If the dilution rate of cladding layer is preferably minimized, can obtain of good performance
Material surface is so as to achieve the effect that low-material-consumption high yield.4. the powder spectrum for being selected as cladding layer is extensive, laser melting coating skill
Art is especially suitable for low-melting-point metal surface cladding high-melting-point alloy.5. laser melting and coating technique easily realizes automation, and cladding layer
Surface property is stablized, and cladding composition of layer and thickness are all in controlled range.Just because of these features, just so that laser melting coating skill
Art has received widespread attention in terms of material surface modifying in the past 10 years.
Laser melting coating can probably be divided into two major class, i.e. preset laser cladding and synchronous mode by the supply mode of cladding material
Laser melting coating, wherein the most commonly used with preset laser cladding.Preset laser cladding is that cladding material is placed in base material in advance
Then the cladding position on surface irradiates scanning fusing using laser beam, cladding material is added in the form of powder, silk or plate, wherein
It is the most commonly used in the form of a powder.The technical process of preset laser cladding is：Base material cladding surface preparation --- it is preset
--- preheating --- laser fusion --- is heat-treated cladding material afterwards.
In powder melting material initialization process, powder spreads the table applied in workpiece often through mode mechanically or manually
Face, this powder preset mode is only applicable to simple shape and horizontal positioned workpiece, and powder initialization layer is also uneven, directly
Connecing causes subsequent laser cladding coating microstructure uneven.Therefore, be badly in need of exploitation it is a kind of be suitable for complex-shaped workpieces and
Preset uniform powder pre-setting method.
Invention content
Simple shape and horizontal positioned workpiece, and powder are only applicable to for existing laser cladding powder pre-setting method
Initialization layer also non-uniform problem, the purpose of the present invention is to provide a kind of laser cladding powder pre-setting methods.The laser
Cladding powder pre-setting method is simple and convenient to operate, and suitable for complicated shape and the workpiece of non-aqueous placing flat, the powder formed is pre-
It is uniform to put layer.
The purpose of the present invention is realized by following technical scheme：
A kind of laser cladding powder pre-setting method, the method step are as follows：
(1) surface for treating cladding workpiece is pre-processed, and cleans up the dust, grease and corrosion of workpiece surface；
(2) back side for treating cladding workpiece is made to act on uniform magnetic field, using electric spray gun to treating that cladding workpiece surface uniformly sprays
Cladding powder is spilt, cladding powder is adsorbed under magnetic fields treats cladding workpiece surface, that is, realizes that laser cladding powder is preset；
Step (2) the cladding powder is iron-based, Ni-based or Co-based alloy powder, and purity is more than 99%, and particle size range is
200~400 mesh, preferably 400 mesh；Step (2) described uniform magnetic field is using electromagnet or magnetic field generator realization, the magnetic sent out
Field intensity ranging from 0.95~24.0mT；
Step (2) described electric spray gun is 220V, frequency 50Hz, power 450W using voltage, and electric spray gun rotating speed is
3000r/min, maximum capacity 800mL, maximum airflow are 180~380mL/min, and jet length is 100~500mm, electric
Spray gun rate travel is 10~100mm/s.
Advantageous effect
Using iron-based, Ni-based or Co-based alloy powder as cladding powder in the method for the invention, these cladding powder are equal
For magnetic material, matrix surface can be attracted under the action of externally-applied magnetic field (such as magnet).The present invention is in this way
It can solve the problems, such as the preset of the matrix cladding powder placed vertically, level levelling base is can be only applied to so as to make up laser melting coating
The deficiency of body, and the powder initialization layer formed is uniform.Present invention process is simple, at low cost and efficient.Therefore, institute of the present invention
Method is stated industrially to be with a wide range of applications in aerospace and automobile etc..
Description of the drawings
Fig. 1 is the powder initialization process schematic diagram of the present invention.
Specific embodiment
The present invention is described in detail in the following with reference to the drawings and specific embodiments, but not limited to this.
The surface preparation mode that cladding workpiece is treated used in following embodiment is：First, it is beaten using sand paper or gauze
Mill treats cladding workpiece surface, to remove the oxide skin of workpiece surface or rust staining；Then, cladding workpiece table is treated using alcohol washes
Face, to remove the dust on surface and grease etc..After more than two-step method, you can cleaned, clean workpiece surface.
The thickness of cladding powder initialization layer is obtained by calculating, and computational methods are as follows：It is calculated first in unit interval and list
The quality of cladding powder obtained in plane product initialization layer；Then, using quality divided by the density of known powder, so as to obtain
The thickness of the powder initialization layer.
Laser cladding powder initialization process schematic diagram is as shown in Figure 1 in embodiment.
The purity of cladding powder used is more than 99% in embodiment.
Embodiment 1
First, it treats cladding workpiece surface to be pre-processed, be cleaned and clean workpiece surface；Then, by workpiece
It is fixed on specimen mounting, applies uniform magnetic field, magnetic field intensity 0.95mT in back of work；Finally, by iron of the granularity for 400 mesh
(powdered ingredients are base alloy powder：Fe 70wt.%, Mo 2wt.%, B 5wt.%, Cr 4wt.%, W 8wt.%, Ni
3wt.%, Si 5wt.%, Mn 3wt.%) it is fitted into electric spray gun, electric spray gun uses voltage as 220V, frequency 50Hz, power
For 450W, electric spray gun rotating speed is 3000r/min, maximum capacity 800mL, maximum airflow 180mL/min, electric spray gun distance
Workpiece surface is 100mm, and the rate travel of electric spray gun is 10mm/s.The iron-based powder initialization layer obtained is highly uniform, thickness
For 40 μm/cm2/s。
Embodiment 2
First, it treats cladding workpiece surface to be pre-processed, be cleaned and clean workpiece surface；Then, by workpiece
It is fixed on specimen mounting, applies uniform magnetic field, magnetic field intensity 24.0mT in back of work；Finally, by cobalt of the granularity for 400 mesh
(powdered ingredients are base alloy powder：Co 38.5wt.%, Ni 32wt.%, Cr 21wt.%, Al 8wt.%, Y
It 0.5wt.%) is fitted into electric spray gun, electric spray gun is 220V, frequency 50Hz, power 450W using voltage, and electric spray gun rotating speed is
3000r/min, maximum capacity 800mL, maximum airflow 380mL/min, electric spray gun is 500mm apart from workpiece surface, electric
The rate travel of spray gun is 100mm/s.The Co-based alloy powder initialization layer obtained is highly uniform, and thickness is 40 μm/cm2/s。
Embodiment 3
First, it treats cladding workpiece surface to be pre-processed, be cleaned and clean workpiece surface；Then, by workpiece
It is fixed on specimen mounting, applies uniform magnetic field, magnetic field intensity 17.4mT in back of work；Finally, by nickel of the granularity for 400 mesh
(powdered ingredients are base alloy powder：Ni 69.8wt.%, Cr 24.8wt.%, Al 4.9wt.%, Y 0.5wt.%) it is packed into electricity
In spray gun, electric spray gun is 220V, frequency 50Hz, power 450W using voltage, and electric spray gun rotating speed is 3000r/min, maximum
Capacity is 800mL, maximum airflow 300mL/min, and electric spray gun is 300mm apart from workpiece surface, the rate travel of electric spray gun
For 60mm/s.The Co-based alloy powder initialization layer obtained is highly uniform, and thickness is 40 μm/cm2/s。
Embodiment 4
First, it treats cladding workpiece surface to be pre-processed, be cleaned and clean workpiece surface；Then, by workpiece
It is fixed on specimen mounting, applies uniform magnetic field, magnetic field intensity 17.4mT in back of work；Finally, by iron of the granularity for 200 mesh
(powdered ingredients are base alloy powder：Fe 70wt.%, Mo 2wt.%, B 5wt.%, Cr 4wt.%, W 8wt.%, Ni
3wt.%, Si 5wt.%, Mn 3wt.%) it is fitted into electric spray gun, electric spray gun uses voltage as 220V, frequency 50Hz, power
For 450W, electric spray gun rotating speed is 3000r/min, maximum capacity 800mL, maximum airflow 300mL/min, electric spray gun distance
Workpiece is 300mm, and the rate travel of electric spray gun is 60mm/s.The iron(-)base powder initialization layer obtained is highly uniform, thickness
For 80 μm/cm2/s。
Embodiment 5
First, it treats cladding workpiece surface to be pre-processed, be cleaned and clean workpiece surface；Then, by workpiece
It is fixed on specimen mounting, applies uniform magnetic field, magnetic field intensity 17.4mT in back of work；Finally, by iron of the granularity for 300 mesh
(powdered ingredients are base alloy powder：Fe 70wt.%, Mo 2wt.%, B 5wt.%, Cr 4wt.%, W 8wt.%, Ni
3wt.%, Si 5wt.%, Mn 3wt.%) it is fitted into electric spray gun, electric spray gun uses voltage as 220V, frequency 50Hz, power
For 450W, electric spray gun rotating speed is 3000r/min, maximum capacity 800mL, maximum airflow 300mL/min, electric spray gun distance
Workpiece is 300mm, and the rate travel of electric spray gun is 60mm/s.The iron(-)base powder initialization layer obtained is highly uniform, thickness
For 50 μm/cm2/s。
The present invention include but not limited to above example, it is every carried out under the principle of spirit of the present invention it is any equivalent
Replacement or local improvement, all will be regarded as within protection scope of the present invention.
Claims (4)
1. a kind of laser cladding powder pre-setting method, which is characterized in that the method step is as follows：
(1) surface for treating cladding workpiece is pre-processed, and cleans up the dust, grease and corrosion of workpiece surface；
(2) back side for treating cladding workpiece is made to act on uniform magnetic field, uniformly sprinkling is molten to cladding workpiece surface is treated using electric spray gun
Whiting end, cladding powder is adsorbed under magnetic fields treats cladding workpiece surface, that is, realizes that laser cladding powder is preset；
Step (2) the cladding powder is iron-based, Ni-based or Co-based alloy powder, and purity is more than 99%, particle size range for 200~
400 mesh；The strength range of the uniform magnetic field is 0.95~24.0mT.
A kind of 2. laser cladding powder pre-setting method according to claim 1, which is characterized in that step (2) described cladding
Powder size is 400 mesh.
3. a kind of laser cladding powder pre-setting method according to claim 1, which is characterized in that step (2) is described uniformly
It is realized using electromagnet or magnetic field generator in magnetic field.
A kind of 4. laser cladding powder pre-setting method according to claim 1, which is characterized in that step (2) described EFI
Rifle using voltage be 220V, frequency 50Hz, power 450W, electric spray gun rotating speed be 3000r/min, maximum capacity 800mL,
Maximum airflow is 180~380mL/min, and jet length is 100~500mm, and electric spray gun rate travel is 10~100mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221507.4A CN104775118B (en) | 2015-05-04 | 2015-05-04 | A kind of laser cladding powder pre-setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221507.4A CN104775118B (en) | 2015-05-04 | 2015-05-04 | A kind of laser cladding powder pre-setting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775118A CN104775118A (en) | 2015-07-15 |
| CN104775118B true CN104775118B (en) | 2018-06-26 |
Family
ID=53616876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510221507.4A Active CN104775118B (en) | 2015-05-04 | 2015-05-04 | A kind of laser cladding powder pre-setting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775118B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970212A (en) * | 2016-07-22 | 2016-09-28 | 贵州高峰石油机械股份有限公司 | Method and magnetizing device for assisting in laser cladding on rotating workpiece |
| CN107460479B (en) * | 2017-08-10 | 2020-08-18 | 福建工程学院 | Method for preparing heat-insulating composite ceramic material on silencer by laser cladding |
| CN108914116B (en) * | 2018-07-17 | 2019-12-27 | 山东大学 | Method for performing powder presetting by laser cladding assisted electro-jet deposition technology |
| CN110438495A (en) * | 2019-09-12 | 2019-11-12 | 广东海洋大学 | A kind of powdering method and device for laser melting coating |
| CN112064010B (en) * | 2020-08-20 | 2022-07-19 | 安徽恒意硬面工程股份有限公司 | Preparation process of channel-like metal surface cladding layer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462151C (en) * | 2003-08-15 | 2009-02-18 | 仁宝电脑工业股份有限公司 | Powder coating method |
| CA2612670A1 (en) * | 2005-06-20 | 2007-01-04 | Praxair S.T. Technology, Inc. | Laser cladding on low heat resistant substrates |
| CN201324710Y (en) * | 2008-11-28 | 2009-10-14 | 西北工业大学 | Kinetic-energy spraying gun using powder to prepare coatings |
| CN102465294B (en) * | 2010-11-17 | 2013-08-14 | 杭州中科新松光电有限公司 | Method for carrying out laser-cladding on high-hardness nickel-based alloy material in large area |
| CN102797007A (en) * | 2012-08-31 | 2012-11-28 | 安阳市睿恒数控机床有限公司 | Method for forming film on roller surface through laser cladding |
-
2015
- 2015-05-04 CN CN201510221507.4A patent/CN104775118B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104775118A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104775118B (en) | A kind of laser cladding powder pre-setting method | |
| CN103866319B (en) | Zr alloy surface prepares the laser cladding method of nickel base heat resistant wear-resistant coating | |
| CN110129708B (en) | Preparation method of FeCoNiCrAlMnM multi-principal-element alloy coating | |
| Huang et al. | Effects of simplified pretreatment process on the morphology of W–Cu composite powder prepared by electroless plating and its sintering characterization | |
| CN103757631A (en) | Preparation method of high-entropy AlCoNiCrFeMo alloy coating | |
| CN103805934A (en) | Method for strengthening surface of metal roller by adopting electro-spark deposition method and plasma fusion covering method | |
| CN107354421A (en) | A kind of preparation method of graphene copper amorphous composite coating | |
| CN109182951A (en) | A kind of plasma spraying prepares chromium-aluminium-carbon composite coating method | |
| CN108324119A (en) | Cookware and preparation method thereof and cooking apparatus | |
| CN104694926B (en) | A kind of process that NiCr wear-resistant coatings are prepared on copper surface | |
| CN104195548A (en) | Zinc-corrosion-resistant coating cobalt-based alloy powder for laser cladding | |
| CN103540931A (en) | Method and device for alloying composite processing of laser surface through mechanical vibration assisted induction heating | |
| CN107419213B (en) | Surface anticorrosion method for metal matrix | |
| CN110129716A (en) | A kind of preparation method of high entropy alloy coating | |
| KR20180057556A (en) | Dense structure of the magnetic coating layer and preparation method thereof | |
| CN109929986A (en) | A kind of composite material and preparation method | |
| CN101994077A (en) | High-temperature oxidation resisting intermetallic compound coating and preparation method thereof | |
| CN108010708B (en) | Preparation method of R-Fe-B sintered magnet and special device thereof | |
| CN103361615B (en) | The equipment of diamond surface double cathode plasma deposition nano coating and technique | |
| CN108179405A (en) | A kind of preparation method of Wear-resistant, high-temperature resistant metal-cermic coating | |
| CN107630184A (en) | A kind of method for preparing niobium silicide coating in niobium or niobium alloy surface | |
| CN107675120A (en) | A kind of method for preparing silication molybdenum coating in molybdenum or molybdenum alloy surface | |
| CN112126885A (en) | Preparation method of high-temperature-resistant insulating coating of electromagnetic induction heating coil | |
| CN109082659A (en) | A kind of preparation method applied to the metal coating under corrosive environment | |
| CN111155082A (en) | Preparation method of FeCoNiCrMn high-entropy alloy coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |