CN107502891A - A kind of laser melting and coating process - Google Patents
A kind of laser melting and coating process Download PDFInfo
- Publication number
- CN107502891A CN107502891A CN201710889285.2A CN201710889285A CN107502891A CN 107502891 A CN107502891 A CN 107502891A CN 201710889285 A CN201710889285 A CN 201710889285A CN 107502891 A CN107502891 A CN 107502891A
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- Prior art keywords
- parts
- cladding
- laser melting
- laser
- powder
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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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a kind of laser melting and coating process, comprise the following steps：A, the cladding material for laser melting coating is prepared；B, cladding material is fitted into the feeding head in cladding machine；C, the fertile material on workpiece is melted using laser first, forms molten bath；D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；E, laser power is adjusted, cladding material fusion is formed cladding layer, operating method of the present invention is simple, and the quality of cladding layer of formation is good, can further improve the intensity and hardness of workpiece in molten bath using laser melting coating.
Description
Technical field
The present invention relates to melting and coating process technical field, specially a kind of laser melting and coating process.
Background technology
Laser melting coating is also known as laser cladding or laser cladding, is a kind of new process for modifying surface.It passes through in base material table
Cladding material is added in face, and using the laser beam method that is allowed to the consolidation together with substrate surface thin layer of high-energy-density, in basic unit
The filling cladding layer that surface is formed with it is metallurgical binding.
Laser processing technology gradually replaces traditional handicraft to realize that product quality has breakthrough raising（Show as higher production
Product intensity, more reliable product stability, more accurate printing precision, print speed, stamp with the size, stronger product wear intensity
With product corrosion resistance and apparent mass more attractive in appearance）, production specification can be also greatly enriched, meets that the special of some industries will
Ask, be with a wide range of applications.At present, during laser melting coating, it may appear that a large amount of crackles such as crackle or cracking, largely effect on technique
Quality, and then influence product quality.
The content of the invention
It is an object of the invention to provide a kind of laser melting and coating process, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme：A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 30-40g/min；
Nitrogen flow is 10L-20L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
Preferably, cladding material component includes WC powder 20-30 parts, nickel base powder 5- in parts by weight in the step A
12 parts, chromium powder 2-6 parts, cobalt powder 3-8 parts, silica flour 2-8 parts, aluminum oxide 4-10 parts and titanium carbide 6-12 parts.
Preferably, laser power is 2000-6000W in the step E；The laser melting coating time is 0.01-0.08s；It is molten
Coating thickness is 0.5-1mm.
Compared with prior art, the beneficial effects of the invention are as follows：Operating method of the present invention is simple, the quality of cladding layer of formation
It is good, it can further improve the intensity and hardness of workpiece；Wherein, the cladding material anti-wear performance of use is good, can reduce cladding
Process caused stress due to material property mismatch, reduces the danger of crackle generation, improves the quality of cladding layer；Through
Overtesting obtains, and cladding layer hardness can reach more than 45HRC, and the bond strength of cladding layer and workpiece can reach
More than 350MPa.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Embodiment one：
The present invention provides following technical scheme：A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 30g/min；Nitrogen
Throughput is 10L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
In the present embodiment, cladding material component includes 20 parts of WC powder, 5 parts of nickel base powder, chromium in parts by weight in step A
6 parts of 2 parts of powder, 3 parts of cobalt powder, 2 parts of silica flour, 4 parts of aluminum oxide and titanium carbide.
In the present embodiment, laser power is 2000W in step E；The laser melting coating time is 0.01s；Cladding layer thickness is
0.5mm。
Embodiment two：
A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 40g/min；Nitrogen
Throughput is 20L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
In the present embodiment, in step A cladding material component in parts by weight include 30 parts of WC powder, 12 parts of nickel base powder,
12 parts of 6 parts of chromium powder, 8 parts of cobalt powder, 8 parts of silica flour, 10 parts of aluminum oxide and titanium carbide.
In the present embodiment, laser power is 6000W in step E；The laser melting coating time is 0.08s；Cladding layer thickness is
1mm。
Embodiment three：
A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 32g/min；Nitrogen
Throughput is 12L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
In the present embodiment, cladding material component includes 22 parts of WC powder, 6 parts of nickel base powder, chromium in parts by weight in step A
8 parts of 3 parts of powder, 4 parts of cobalt powder, 3 parts of silica flour, 5 parts of aluminum oxide and titanium carbide.
In the present embodiment, laser power is 2500W in step E；The laser melting coating time is 0.02s；Cladding layer thickness is
0.6mm。
Example IV：
A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 38g/min；Nitrogen
Throughput is 18L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
In the present embodiment, in step A cladding material component in parts by weight include 28 parts of WC powder, 10 parts of nickel base powder,
10 parts of 5 parts of chromium powder, 7 parts of cobalt powder, 7 parts of silica flour, 9 parts of aluminum oxide and titanium carbide.
In the present embodiment, laser power is 5000W in step E；The laser melting coating time is 0.07s；Cladding layer thickness is
0.8mm。
Embodiment five：
A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 34g/min；Nitrogen
Throughput is 16L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
In the present embodiment, in step A cladding material component in parts by weight include 24 parts of WC powder, 10 parts of nickel base powder,
9 parts of 6 parts of chromium powder, 4 parts of cobalt powder, 3 parts of silica flour, 8 parts of aluminum oxide and titanium carbide.
In the present embodiment, laser power is 4500W in step E；The laser melting coating time is 0.06s；Cladding layer thickness is
0.9mm。
Embodiment six：
A kind of laser melting and coating process, comprises the following steps：
A, the cladding material for laser melting coating is prepared；
B, cladding material is fitted into the feeding head in cladding machine；
C, the fertile material on workpiece is melted using laser first, forms molten bath；
D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 35g/min；Nitrogen
Throughput is 15L/min；
E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
In the present embodiment, cladding material component includes 25 parts of WC powder, 8 parts of nickel base powder, chromium in parts by weight in step A
9 parts of 4 parts of powder, 6 parts of cobalt powder, 5 parts of silica flour, 7 parts of aluminum oxide and titanium carbide.
In the present embodiment, laser power is 4000W in step E；The laser melting coating time is 0.05s；Cladding layer thickness is
0.8mm。
Operating method of the present invention is simple, and the quality of cladding layer of formation is good, can further improve the intensity and hardness of workpiece；
Wherein, the cladding material anti-wear performance of use is good, can reduce cladding process due to material property mismatch and caused stress,
The danger of crackle generation is reduced, improves the quality of cladding layer；Obtained through overtesting, cladding layer hardness can reach 45HRC
More than, and the bond strength of cladding layer and workpiece can reach more than 350MPa.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
- A kind of 1. laser melting and coating process, it is characterised in that：Comprise the following steps：A, the cladding material for laser melting coating is prepared；B, cladding material is fitted into the feeding head in cladding machine；C, the fertile material on workpiece is melted using laser first, forms molten bath；D, powder feeding rate is adjusted, pushing mode using nitrogen is pushed into cladding material in molten bath；Powder feeding rate is 30-40g/min； Nitrogen flow is 10L-20L/min；E, laser power is adjusted, cladding material fusion is formed cladding layer in molten bath using laser melting coating.
- A kind of 2. laser melting and coating process according to claim 1, it is characterised in that：Cladding material component in the step A Include WC powder 20-30 parts, nickel base powder 5-12 parts, chromium powder 2-6 parts, cobalt powder 3-8 parts, silica flour 2-8 parts, oxidation in parts by weight Aluminium 4-10 parts and titanium carbide 6-12 parts.
- A kind of 3. laser melting and coating process according to claim 1, it is characterised in that：Laser power is in the step E 2000-6000W；The laser melting coating time is 0.01-0.08s；Cladding layer thickness is 0.5-1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889285.2A CN107502891A (en) | 2017-09-27 | 2017-09-27 | A kind of laser melting and coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889285.2A CN107502891A (en) | 2017-09-27 | 2017-09-27 | A kind of laser melting and coating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107502891A true CN107502891A (en) | 2017-12-22 |
Family
ID=60698627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710889285.2A Pending CN107502891A (en) | 2017-09-27 | 2017-09-27 | A kind of laser melting and coating process |
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| CN (1) | CN107502891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977803A (en) * | 2018-07-04 | 2018-12-11 | 湖南工业大学 | A kind of preparation method of TC4/TiC laser melting coating composite coating |
| CN110158083A (en) * | 2019-06-25 | 2019-08-23 | 西安文理学院 | A kind of centrifugal compressor surface peening high-rate laser cladding alloy powder and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719822A (en) * | 2012-07-03 | 2012-10-10 | 昆明理工大学 | Powder delivering method of synchronous powder delivering type laser cladding and device thereof |
| CN104878382A (en) * | 2015-05-27 | 2015-09-02 | 机械科学研究总院先进制造技术研究中心 | Alloy powder for laser cladding and method for laser cladding alloy powder |
| CN104962909A (en) * | 2015-08-01 | 2015-10-07 | 西北有色金属研究院 | Method for preparing antifriction wear-resistant coating on metal matrix surface |
-
2017
- 2017-09-27 CN CN201710889285.2A patent/CN107502891A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719822A (en) * | 2012-07-03 | 2012-10-10 | 昆明理工大学 | Powder delivering method of synchronous powder delivering type laser cladding and device thereof |
| CN104878382A (en) * | 2015-05-27 | 2015-09-02 | 机械科学研究总院先进制造技术研究中心 | Alloy powder for laser cladding and method for laser cladding alloy powder |
| CN104962909A (en) * | 2015-08-01 | 2015-10-07 | 西北有色金属研究院 | Method for preparing antifriction wear-resistant coating on metal matrix surface |
Non-Patent Citations (2)
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| REINHART POPRAWE等: "《定制光 激光制造技术》", 31 January 2016, 华中科技大学出版社 * |
| 丁彰雄等: "《船舶机械修理工艺学》", 28 February 2013, 武汉理工大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977803A (en) * | 2018-07-04 | 2018-12-11 | 湖南工业大学 | A kind of preparation method of TC4/TiC laser melting coating composite coating |
| CN110158083A (en) * | 2019-06-25 | 2019-08-23 | 西安文理学院 | A kind of centrifugal compressor surface peening high-rate laser cladding alloy powder and method |
| CN110158083B (en) * | 2019-06-25 | 2021-08-10 | 西安文理学院 | High-speed laser cladding alloy powder for surface strengthening of centrifugal compressor and method |
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Application publication date: 20171222 |