CN102851665A - Nozzle for laser cladding - Google Patents
Nozzle for laser cladding Download PDFInfo
- Publication number
- CN102851665A CN102851665A CN2012103157053A CN201210315705A CN102851665A CN 102851665 A CN102851665 A CN 102851665A CN 2012103157053 A CN2012103157053 A CN 2012103157053A CN 201210315705 A CN201210315705 A CN 201210315705A CN 102851665 A CN102851665 A CN 102851665A
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- CN
- China
- Prior art keywords
- powder
- shower nozzle
- entrance
- nozzle
- gas passage
- 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.)
- Granted
Links
- 238000004372 laser cladding Methods 0.000 title abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 69
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000005253 cladding Methods 0.000 description 11
- 230000005465 channeling Effects 0.000 description 5
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 239000000758 substrate Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
- B05B7/228—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using electromagnetic radiation, e.g. laser
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a nozzle for laser cladding. The nozzle is provided with a central channel which is arranged at the center of the nozzle and is penetrating from top to bottom; the bottom of the central channel is in the shape of a funnel; a plurality of powder channels and a plurality of gas channels are arranged between the wall of the central channel and the outer wall of the nozzle, wherein one end of each powder channel is connected with a powder adding apparatus, the one end of each powder channel penetrates the bottom surface of the nozzle, one end of each gas channel is connected with a protective gas adding apparatus, the one end of each gas channel penetrates the bottom surface of the nozzle, and the powder channels and the gas channels are spiral and are alternately arranged and uniformly distributed around the central axis of the central channel. According to the nozzle for laser cladding provided by the invention, original linear powder channels and gas channels are designed to be spiral, so distance from a minimum convergent point of a powder flow field formed by gathering of powder flows and gas flows to the bottom end of the nozzle is shortened, and density uniformity of alloy powder in the powder flow field is improved by more than 30% compared with the density uniformity obtained by using a last-generation nozzle.
Description
Technical field
the present invention relates to the shower nozzle for laser melting coating, belong 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 be added, and forms the new liquid-metal layer of one deck, treat laser beam through after, the temperature in molten bath reduces, and liquid metal is cooling rapidly, forms the new solid-state cladding layer of one deck in metallic surface.Laser melting coating can change the metallicity of this key position greatly, as hardness, wear resistance, thermotolerance, erosion resistance etc.
the main powder feeding technology of current industry member in the laser melting coating application is that paraxonic dusts, but belongs to split type shower nozzle because paraxonic dusts, and needs two shower nozzles to cooperate simultaneously, is unfavorable for very much the processing of complex surface, therefore with axiation, dusts and becomes new developing direction.In recent years, on the basis of dusting in same axiation, shielding gas also is added into the design of same axiation, has produced the technology of powderject, shielding gas integrated coaxial.As accompanying drawing 1 has shown, a kind ofly dust, the shower nozzle of shielding gas integrated coaxial.Yet in the world,, because the design of integrated coaxial shower nozzle is not yet perfect, so this technology also has one period very long evolution period.
as the integrated coaxial shower nozzle in accompanying drawing 1, it have the central authorities that are opened in this shower nozzle laser channeling 2, be opened in a plurality of powder channels 3 around laser channeling 2, be opened in the gas passage 4 of powder channel 3 peripheries, laser channeling 2, powder channel 3 and gas passage 4 are all relative independent, are not communicated with mutually.Laser, powder, shielding gas are gathered together and carry out cladding in the work piece surface for the treatment of cladding from channel injection goes out shower nozzle separately.Powder channel 3 of the prior art and gas passage 4 are straight channel as shown in Figure 1; central shaft around laser channeling 2 is uniformly distributed; due to the restriction of receiving the shower nozzle size; the angle of inclination of straight channel is limited; therefore cause distant to the shower nozzle bottom of the minimum convergent point of flow of powder and gas stream; the mixed flow of powder field density of powder and shielding gas is little, inhomogeneous; thereby affect the cladding effect, a series of cladding results such as the tension force of laser molten pool, melting ratio, cladding height all are difficult to controlled.
Summary of the invention
in order to address the above problem, the object of the present invention is to provide a kind of shower nozzle for laser melting coating.
in order to reach above purpose, the technical solution used in the present invention is: for the shower nozzle of laser melting coating, it has the centre gangway that runs through up and down shower nozzle that is opened in these shower nozzle central authorities, the bottom of centre gangway is doline, offering a plurality of ends the other end that is connected with the powder adding set between the outer wall of the wall of centre gangway and shower nozzle runs through the powder channel of shower nozzle bottom surface and a plurality of end the other end that is connected with the shielding gas adding set and runs through the gas passage of shower nozzle bottom surface, powder channel and gas passage are all twist, and the two each interval is arranged and be uniformly distributed around the central shaft of centre gangway.
further, the central point of the entrance of a plurality of powder channels is on same level, and the central point of the entrance of a plurality of gas passages is on same level.
further, when the entrance of the entrance of powder channel and gas passage is measure-alike, the diameter of establishing entrance is d
1
, the spacing of the entrance center point of adjacent powder channel and gas passage is more than or equal to 4d
1
; When the entrance size of the entrance of powder channel and gas passage is different, the diameter of establishing wherein larger entrance is d
2
, the spacing of the entrance center point of adjacent powder channel and gas passage is more than or equal to 4d
2
.
preferably, the rotation angle displacement of powder channel and gas passage is 170 °～280 °.
more preferably, the size of the ingress of powder channel and gas passage is greater than the size in exit.
the present invention is for the shower nozzle of laser melting coating, by by original rectilinear powder channel and gas path design helically, it is large that angle angle between the flow of powder formed while making powder and shielding gas eject helical channel and gas stream and laser beam central shaft becomes, and then the minimum convergent point in the powder flow field that pools of the flow of powder shortened and gas stream and the distance of shower nozzle bottom, make the density uniformity of powder flow field interalloy powder improve more than 30% than previous generation shower nozzle, and then improved the tension force of laser molten pool, the melting ratio, a series of cladding results such as cladding height.
The accompanying drawing explanation
the cross-sectional view that accompanying drawing 1 is shower nozzle of the prior art;
accompanying drawing 2 is the cross-sectional view of the present invention for the shower nozzle of laser melting coating.
number in the figure is:
1, shower nozzle; 2, laser channeling; 3, powder channel; 4, gas passage; 5, laser head; 6, laser beam; 7, workpiece base material; 8, cladding layer; 9, protection eyeglass; 10, the first chamber; 11, the second chamber; 12, focusing lens.
Embodiment
below in conjunction with accompanying drawing, preferred embodiment of the present invention 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 scope of the present invention is made to more explicit defining.
from the structural representation of accompanying drawing 2, can find out, the invention provides the shower nozzle for laser melting coating, it has the centre gangway that runs through up and down shower nozzle 1 that is opened in these shower nozzle 1 central authorities, the bottom of centre gangway is doline, offering a plurality of ends the other end that is connected with the powder adding set between the outer wall of the wall of centre gangway and shower nozzle 1 runs through the powder channel 3 of shower nozzle 1 bottom surface and a plurality of end the other end that is connected with the shielding gas adding set and runs through the gas passage 4 of shower nozzle 1 bottom surface, powder channel 3 and gas passage 4 are all twist, and the two each interval is arranged and be uniformly distributed around the central shaft of centre gangway.
the central point of the entrance of a plurality of powder channels 3 is on same level, and the central point of the entrance of a plurality of gas passages 4 is on same level.When the shower nozzle diameter is larger, the central point of the entrance of gas passage 4 and powder channel 3 can be on same level.
when the entrance of the entrance of powder channel 3 and gas passage 4 is measure-alike, the diameter of establishing entrance is d
1
, adjacent powder channel 3 is more than or equal to 4d with the spacing of the entrance center point of gas passage 4
1
; When the entrance size of the entrance of powder channel 3 and gas passage 4 is different, the diameter of establishing wherein larger entrance is d
2
, adjacent powder channel 3 is more than or equal to 4d with the spacing of the entrance center point of gas passage 4
2
.
the rotation angle displacement of powder channel 3 and gas passage 4 is 170 °～280 °; the angular travel size depends on the vertical length of the entrance of passage to the shower nozzle low side; angular travel is crossed conference and is caused powder and shielding gas mobile not smooth in passage; especially powder; may result in blockage, angular travel is too small improves DeGrain to prior art.
the size of the ingress of powder channel 3 and gas passage 4 is greater than the size in exit, the pressure while to increase powder and shielding gas, ejecting shower nozzle.
centre gangway comprises the second chamber 11 that is positioned at the first chamber 10 and is positioned at 10 belows, the first chamber and is connected with the first chamber 10, the first chamber 10 of centre gangway and the axial line in the second chamber 11 coincide, the first chamber 10 be cylindrical or doline, and the first 10 bottom, chamber bore is less than or equal to the second 11 top, chamber bore.The second chamber 11 is doline, prevents that powder from entering centre gangway from the second chamber 11 bottom nozzles on the one hand, the spray regime while dwindling on the other hand the shielding gas ejection.
laser head 13 gives off laser beam 6; laser beam 6 enters the first chamber 10 of centre gangway through focusing lens 12 and protection eyeglass 9; powder and shielding gas eject to converge respectively and are mixed to form the powder flow field from spiral powder channel 3 and gas passage 4, arrive the workpiece substrate surface for the treatment of cladding.
above-described embodiment is only explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the shower nozzle for laser melting coating, it is characterized in that: it has the centre gangway that runs through up and down shower nozzle (1) that is opened in this shower nozzle (1) central authorities, the bottom of described centre gangway is doline, offering a plurality of ends the other end that is connected with the powder adding set between the outer wall of the wall of centre gangway and shower nozzle (1) runs through the powder channel (3) of shower nozzle (1) bottom surface and a plurality of end the other end that is connected with the shielding gas adding set and runs through the gas passage (4) of shower nozzle (1) bottom surface, described powder channel (3) and gas passage (4) are all twist, and the two each interval is arranged and be uniformly distributed around the central shaft of centre gangway.
2. the shower nozzle for laser melting coating according to claim 1, it is characterized in that: the central point of the entrance of described a plurality of powder channels (3) is on same level, and the central point of the entrance of described a plurality of gas passages (4) is on same level.
3. the shower nozzle for laser melting coating according to claim 1 is characterized in that: when the entrance of the entrance of described powder channel (3) and gas passage (4) is measure-alike, the diameter of establishing entrance is d
1, described adjacent powder channel (3) is more than or equal to 4d with the spacing of the entrance center point of gas passage (4)
1; When the entrance size of the entrance of described powder channel (3) and gas passage (4) is different, the diameter of establishing wherein larger entrance is d
2, described adjacent powder channel (3) is more than or equal to 4d with the spacing of the entrance center point of gas passage (4)
2.
4. the shower nozzle for laser melting coating according to claim 1, it is characterized in that: the rotation angle displacement of described powder channel (3) and gas passage (4) is 170 °～280 °.
5. the shower nozzle for laser melting coating according to claim 1, it is characterized in that: the size of the ingress of described powder channel (3) and gas passage (4) is greater than the size in exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315705.3A CN102851665B (en) | 2012-08-31 | 2012-08-31 | Nozzle for laser cladding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315705.3A CN102851665B (en) | 2012-08-31 | 2012-08-31 | Nozzle for laser cladding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102851665A true CN102851665A (en) | 2013-01-02 |
| CN102851665B CN102851665B (en) | 2014-04-02 |
Family
ID=47398627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210315705.3A Active CN102851665B (en) | 2012-08-31 | 2012-08-31 | Nozzle for laser cladding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102851665B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046046A (en) * | 2013-01-07 | 2013-04-17 | 张翀昊 | Double shielding gas spray head with spiral gas and powder channels for laser cladding |
| CN103046045A (en) * | 2013-01-07 | 2013-04-17 | 张翀昊 | Double shielding gas premixing spray head with spiral gas and powder channels for laser cladding |
| CN103215587A (en) * | 2013-01-07 | 2013-07-24 | 张翀昊 | Spiral gas-powder channel premixing type nozzle for laser cladding |
| CN105970211A (en) * | 2016-07-07 | 2016-09-28 | 四川三阳永年增材制造技术有限公司 | Multifunctional spray head for laser cladding and application method thereof |
| CN112719591A (en) * | 2020-12-30 | 2021-04-30 | 苏州伊斯丹实业有限公司 | Laser wire-adding welding device |
| WO2022126943A1 (en) * | 2020-12-16 | 2022-06-23 | 江南大学 | Sensing elastic foam and multi-channel coaxial extrusion additive manufacturing device and method therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201329320Y (en) * | 2008-12-25 | 2009-10-21 | 沈阳大陆激光柔性制造技术有限公司 | Coaxial powder-feeding nozzle with water cooling and guided air protection |
-
2012
- 2012-08-31 CN CN201210315705.3A patent/CN102851665B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201329320Y (en) * | 2008-12-25 | 2009-10-21 | 沈阳大陆激光柔性制造技术有限公司 | Coaxial powder-feeding nozzle with water cooling and guided air protection |
Non-Patent Citations (2)
| Title |
|---|
| 杨洗陈等: "非载气式激光同轴送粉试验研究", 《中国激光》 * |
| 王维等: "激光熔覆同轴送粉喷嘴研制", 《中国激光》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046046A (en) * | 2013-01-07 | 2013-04-17 | 张翀昊 | Double shielding gas spray head with spiral gas and powder channels for laser cladding |
| CN103046045A (en) * | 2013-01-07 | 2013-04-17 | 张翀昊 | Double shielding gas premixing spray head with spiral gas and powder channels for laser cladding |
| CN103215587A (en) * | 2013-01-07 | 2013-07-24 | 张翀昊 | Spiral gas-powder channel premixing type nozzle for laser cladding |
| CN105970211A (en) * | 2016-07-07 | 2016-09-28 | 四川三阳永年增材制造技术有限公司 | Multifunctional spray head for laser cladding and application method thereof |
| WO2022126943A1 (en) * | 2020-12-16 | 2022-06-23 | 江南大学 | Sensing elastic foam and multi-channel coaxial extrusion additive manufacturing device and method therefor |
| CN112719591A (en) * | 2020-12-30 | 2021-04-30 | 苏州伊斯丹实业有限公司 | Laser wire-adding welding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102851665B (en) | 2014-04-02 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150608 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Owner name: JIANSU HEHAO LASER TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHANGJIAGANG HEHAO LASER TECHNOLOGY CO., LTD. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215636 SUZHOU, JIANGSU PROVINCE TO: 213164 CHANGZHOU, JIANGSU PROVINCE |
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| 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. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150608 Address after: Wujin District of Jiangsu city in Changzhou province 213164 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 213164 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 213164 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 213164 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 213164 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee before: Changzhou Tengen Industry Development Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Nozzle for laser cladding Effective date of registration: 20220811 Granted publication date: 20140402 Pledgee: China Zheshang Bank Co., Ltd. Changzhou Branch Pledgor: CHANGZHOU TIANZHENG INDUSTRIAL DEVELOPMENT CO.,LTD. Registration number: Y2022980012395 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231205 Granted publication date: 20140402 Pledgee: China Zheshang Bank Co.,Ltd. Changzhou Branch Pledgor: CHANGZHOU TIANZHENG INDUSTRIAL DEVELOPMENT CO.,LTD. Registration number: Y2022980012395 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Spray nozzle for laser cladding Effective date of registration: 20231207 Granted publication date: 20140402 Pledgee: China Zheshang Bank Co.,Ltd. Changzhou Branch Pledgor: CHANGZHOU TIANZHENG INDUSTRIAL DEVELOPMENT CO.,LTD. Registration number: Y2023980069985 |