CN202786433U - Spray nozzle improving laser-cladding effect - Google Patents
Spray nozzle improving laser-cladding effect Download PDFInfo
- Publication number
- CN202786433U CN202786433U CN 201220429255 CN201220429255U CN202786433U CN 202786433 U CN202786433 U CN 202786433U CN 201220429255 CN201220429255 CN 201220429255 CN 201220429255 U CN201220429255 U CN 201220429255U CN 202786433 U CN202786433 U CN 202786433U
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- China
- Prior art keywords
- shower nozzle
- shielding gas
- laser
- passage
- gas passage
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- Expired - Lifetime
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- 230000000694 effects Effects 0.000 title claims abstract description 15
- 239000007921 spray Substances 0.000 title abstract description 11
- 238000004372 laser cladding Methods 0.000 title abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 87
- 239000000843 powder Substances 0.000 claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 230000005465 channeling Effects 0.000 claims description 29
- 239000001307 helium Substances 0.000 claims description 19
- 229910052734 helium Inorganic materials 0.000 claims description 19
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 abstract description 19
- 238000005253 cladding Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 8
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Laser Beam Processing (AREA)
Abstract
The utility model discloses a spray nozzle improving the laser-cladding effect, which is provided with a laser passage, a first protective gas passage and a second protective gas passage, wherein the laser passage is formed in the center of the spray nozzle; the first protective gas passage is formed in one end of the spray nozzle and around the laser passage and is connected with an adding device for a protective gas; and the second protective gas passage is formed in the end of the spray nozzle and around a powder passage and is connected with an adding device for another protective gas. The other technical scheme provided by the utility model is that the spray nozzle improving the laser-cladding effect is provided with a laser passage, a first protective gas inlet and a second protective gas passage, wherein the laser passage is formed in the center of the spray nozzle; the first protective gas inlet is formed in the spray nozzle; one end of the first protective gas inlet is connected with an adding device for a protective gas; the other end of the first protective inlet is communicated with the laser passage; and the second protective passage is formed in one end of the spray nozzle and around a powder passage and connected with an adding device for another protective gas. Through the adoption of the technical schemes, various protective gases with different elements and different gas pressures can be used in cladding, so as to improve the quality of a cladding layer.
Description
Technical field
The utility model relates to a kind of shower nozzle that improves the laser melting coating effect, belongs to field of laser cladding.
Background technology
Laser melting coating is the superlaser surface cladding, its physical process is that under the irradiation of High energy laser beam, substrate surface is melted rapidly, liquid metal forms a small-scale molten bath, in this molten bath, metallic substance originally mixes mutually with the powder that is added, and forms the new liquid-metal layer of one deck, treat after the laser beam process, the temperature in molten bath reduces, and liquid metal cools off rapidly, forms the new solid-state cladding layer of one deck in the metallic surface.Laser melting coating can change the metallicity of this key position greatly, such as hardness, wear resistance, thermotolerance, erosion resistance etc.
For preventing at high temperature oxidation of metal, design protection gas passage in the cladding shower nozzle, injecting protective gas when carrying out laser melting coating, it is not oxidized with the protection metal to form the shielding gas field.Only use single a kind of shielding gas in the prior art, though tool has certain effect, the cladding layer air spots is sliding, is full of pore, and because surface tension is inadequate, there is collapse phenomenon on the cladding surface.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of method and shower nozzle for improving the laser melting coating effect.
In order to reach above purpose; the technical solution adopted in the utility model is: a kind of shower nozzle that improves the laser melting coating effect, and it has the laser channeling that is opened in these shower nozzle central authorities; be opened in a end around the laser channeling the other end that is connected with a kind of shielding gas adding set and run through the first shielding gas passage of shower nozzle bottom surface; an end that is opened in the first shielding gas passage periphery the other end that is connected with the powder adding set runs through the powder channel of shower nozzle bottom surface; an end that is opened in the powder channel periphery the other end that is connected with another kind of shielding gas adding set runs through the second shielding gas passage of shower nozzle bottom surface.
Preferably, an end of the first shielding gas passage is connected with the helium adding set, and the second shielding gas passage is connected with the nitrogen adding set.
More preferably, the first shielding gas passage has a plurality of, and evenly distributes around the central shaft of laser channeling; The second shielding gas passage has a plurality of, and evenly distributes around the central shaft of laser channeling.
Another technical scheme that the utility model provides is: a kind of shower nozzle that improves the laser melting coating effect, it has the laser channeling that is opened in these shower nozzle central authorities, be opened in an end on the shower nozzle be connected with a kind of shielding gas adding set the first gas atmosphere inlet that the other end laser channeling is connected, be opened in a end around the laser channeling the other end that is connected with the powder adding set and run through the powder channel of shower nozzle bottom surface, the end that is opened in the powder channel periphery the other end that is connected with another kind of shielding gas adding set and run through the second shielding gas passage of shower nozzle bottom surface.
Preferably, an end of the first gas atmosphere inlet is connected with the helium adding set, and the second shielding gas passage is connected with the nitrogen adding set.
More preferably, the first gas atmosphere inlet and laser channeling connection in the vertical direction apart from the shower nozzle bottom surface more than or equal to 5cm.
More preferably, the first gas atmosphere inlet has a plurality of, and evenly distributes around the central shaft of laser channeling; The second shielding gas passage has a plurality of, and evenly distributes around the central shaft of laser channeling.
Owing to adopted technique scheme; the utility model improves method and the shower nozzle of laser melting coating effect; in the shower nozzle indoor design multiple protective gas passage; can in cladding, use the shielding gas of multiple heterogeneity, different air pressure; improve quality of cladding layer; reduce crackle, shrinkage porosite, shrinkage cavity, improve cladding layer compactness.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of shower nozzle of the utility model embodiment;
Accompanying drawing 2 is the structural representation of shower nozzle among the utility model embodiment two.
Wherein:
1, shower nozzle; 2, laser channeling; 3, powder channel; 4, the first shielding gas passage; 5, the second shielding gas passage; 6, laser beam; 7, treat the cladding workpiece; 8, cladding layer; 9, the first gas atmosphere inlet.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
Embodiment one
Present embodiment provides a kind of method that improves the laser melting coating effect; when laser melting coating; a passage at shower nozzle passes into helium as shielding gas, passes into simultaneously nitrogen as shielding gas at another passage of shower nozzle, and helium and nitrogen spray from shower nozzle simultaneously.The volume of helium accounts for more than 20% of cumulative volume of helium and nitrogen, and the air pressure of helium is lower than the air pressure of nitrogen.
Nitrogen is more cheap, but can only prevent oxidation, and anti-oxidant function is not as helium.Helium not only can be anti-oxidant, and inertia is stronger, can prevent other reactions of metal-powder, but expensive.
The protective value of helium is stronger than nitrogen, but finds through contrast, in the mixed gas of nitrogen and helium, if the volume ratio of helium more than 20%, the protective value of this mixed gas and pure helium are very approaching, economy is very strong.
The air pressure of helium is 1.5～2 normal atmosphere, and the air pressure of nitrogen is 3～5 normal atmosphere.
Another technical scheme that present embodiment provides is: a kind of shower nozzle of the method for above-mentioned raising laser melting coating effect; as shown in Figure 1, it has the laser channeling 2 that is opened in these shower nozzle 1 central authorities; be opened in a end around the laser channeling 2 the other end that is connected with a kind of shielding gas adding set and run through the first shielding gas passage 4 of shower nozzle 1 bottom surface; an end that is opened in the first shielding gas passage 4 peripheries the other end that is connected with the powder adding set runs through the powder channel 3 of shower nozzle 1 bottom surface; an end that the is opened in powder channel 3 peripheries the other end that is connected with another kind of shielding gas adding set runs through the second shielding gas passage 5 of shower nozzle 1 bottom surface.
The first shielding gas passage 4 has a plurality of, and evenly distributes around the central shaft of laser channeling 2; The second shielding gas passage 5 has a plurality of, and evenly distributes around the central shaft of laser channeling 2.
One end of the first shielding gas passage 4 is connected with the helium adding set; helium sprays between laser and powder; help to strengthen the homogeneity in powder flow field; the second shielding gas passage 5 is connected with the nitrogen adding set; nitrogen helps to strengthen centrality and the convergency in powder flow field in the peripheral ejection of powder.
The size at the place, gas inlet of each first shielding gas passage 4 and the second shielding gas passage 5 is greater than the size of gas outlet, the pressure when ejecting from shower nozzle with increase gas.
Cladding layer surface smoothing under kinds of protect gas covers, without hole and crackle, surface tension is enough, and cladding layer central authorities shrink, and meet the cladding height requirement.
Embodiment two
The difference of present embodiment and embodiment one is: a kind of shower nozzle for above-mentioned raising laser melting coating effect; as shown in Figure 2, it has the laser channeling 2 that is opened in these shower nozzle 1 central authorities; be opened in the first gas atmosphere inlet 9 that the other end laser channeling 2 is connected that is connected with a kind of shielding gas adding set of an end on the shower nozzle 1; be opened in a end around the laser channeling 2 the other end that is connected with the powder adding set and run through the powder channel 3 of shower nozzle 1 bottom surface; an end that the is opened in powder channel 3 peripheries the other end that is connected with another kind of shielding gas adding set runs through the second shielding gas passage 5 of shower nozzle 1 bottom surface.
One end of the first gas atmosphere inlet 9 is connected with the helium adding set, and the second shielding gas passage 5 is connected with the nitrogen adding set.
The first gas atmosphere inlet 9 with laser channeling 2 connection in the vertical directions apart from shower nozzle 1 bottom surface more than or equal to 5cm; to guarantee that shielding gas forms the stable mobile wind of wind direction within it before the centre gangway ejection; and then guarantee that powder do not rushed in centre gangway, also can guarantee that shielding gas fully mixes with powder simultaneously after central channel injection goes out.
The first gas atmosphere inlet 9 has a plurality of, and evenly distributes around the central shaft of laser channeling 2; The second shielding gas passage 5 has a plurality of, and evenly distributes around the central shaft of laser channeling 2.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (6)
1. shower nozzle that improves the laser melting coating effect is characterized in that: it has the laser channeling (2) that is opened in this shower nozzle (1) central authorities; be opened in described laser channeling (a 2) the end on every side the other end that is connected with a kind of shielding gas adding set and run through the first shielding gas passage (4) of shower nozzle (1) bottom surface; be opened in the peripheral end of described the first shielding gas passage (4) the other end that is connected with the powder adding set and run through the powder channel (3) of described shower nozzle (1) bottom surface; be opened in the peripheral end of described powder channel (3) the other end that is connected with another kind of shielding gas adding set and run through the second shielding gas passage (5) of shower nozzle (1) bottom surface.
2. shower nozzle according to claim 1, it is characterized in that: an end of described the first shielding gas passage (4) is connected with the helium adding set, and described the second shielding gas passage (5) is connected with the nitrogen adding set.
3. shower nozzle according to claim 1, it is characterized in that: described the first shielding gas passage (4) has a plurality of, and evenly distributes around the central shaft of laser channeling (2); Described the second shielding gas passage (5) has a plurality of, and evenly distributes around the central shaft of laser channeling (2).
4. shower nozzle that improves the laser melting coating effect is characterized in that: it has the laser channeling (2) that is opened in this shower nozzle (1) central authorities; be opened in the upper end of described shower nozzle (1) the first gas atmosphere inlet (9) that the described laser channeling of the other end (2) is connected that is connected with a kind of shielding gas adding set; be opened in described laser channeling (a 2) the end on every side the other end that is connected with the powder adding set and run through the powder channel (3) of described shower nozzle (1) bottom surface; be opened in the peripheral end of described powder channel (3) the other end that is connected with another kind of shielding gas adding set and run through the second shielding gas passage (5) of shower nozzle (1) bottom surface.
5. shower nozzle according to claim 4, it is characterized in that: an end of described the first gas atmosphere inlet (9) is connected with the helium adding set, and described the second shielding gas passage (5) is connected with the nitrogen adding set.
6. shower nozzle according to claim 4 is characterized in that: described the first gas atmosphere inlet (9) with laser channeling (2) connection in the vertical direction apart from shower nozzle (1) bottom surface more than or equal to 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429255 CN202786433U (en) | 2012-08-28 | 2012-08-28 | Spray nozzle improving laser-cladding effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429255 CN202786433U (en) | 2012-08-28 | 2012-08-28 | Spray nozzle improving laser-cladding effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202786433U true CN202786433U (en) | 2013-03-13 |
Family
ID=47813731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429255 Expired - Lifetime CN202786433U (en) | 2012-08-28 | 2012-08-28 | Spray nozzle improving laser-cladding effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202786433U (en) |
-
2012
- 2012-08-28 CN CN 201220429255 patent/CN202786433U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU TIANZHENG LASER EQUIPMENT CO., LTD. Free format text: FORMER OWNER: JIANSU HEHAO LASER TECHNOLOGY CO., LTD. Effective date: 20140915 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANSU HEHAO LASER TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHANGJIAGANG HEHAO LASER TECHNOLOGY CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215636 SUZHOU, JIANGSU PROVINCE TO: 213000 CHANGZHOU, JIANGSU PROVINCE |
|
| CP03 | Change of name, title or address |
Address after: 215636, Daxin Road, Zhangjiagang, Jiangsu Province Patentee after: JIANGSU HEHAO LASER TECHNOLOGY Co.,Ltd. Address before: 215636, Jiangsu, Suzhou province Zhangjiagang Daxin Town sea dam road Patentee before: Zhangjiagang Hehao Laser Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140915 Address after: Wujin District of Jiangsu city in Changzhou province 213000 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee after: CHANGZHOU CAM TENGEN LASER Co.,Ltd. Address before: 215636, Daxin Road, Zhangjiagang, Jiangsu Province Patentee before: JIANGSU HEHAO LASER TECHNOLOGY Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wujin District of Jiangsu city in Changzhou province 213000 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee after: Changzhou Tengen Industry Development Co.,Ltd. Address before: Wujin District of Jiangsu city in Changzhou province 213000 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee before: CHANGZHOU CAM TENGEN LASER Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wujin District of Jiangsu city in Changzhou province 213000 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee after: CHANGZHOU TIANZHENG INDUSTRIAL DEVELOPMENT CO.,LTD. Address before: Wujin District of Jiangsu city in Changzhou province 213000 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee before: Changzhou Tengen Industry Development Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |