CN2707772Y - Ring type coaxial laser cladding nozzle - Google Patents
Ring type coaxial laser cladding nozzle Download PDFInfo
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- CN2707772Y CN2707772Y CNU2004200469529U CN200420046952U CN2707772Y CN 2707772 Y CN2707772 Y CN 2707772Y CN U2004200469529 U CNU2004200469529 U CN U2004200469529U CN 200420046952 U CN200420046952 U CN 200420046952U CN 2707772 Y CN2707772 Y CN 2707772Y
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Abstract
The utility model relates to a ring type coaxial laser cladding nozzle. The upper part of the ring type coaxial laser cladding nozzle is provided with a connecting sleeve with is connected with a laser head, the middle part of the ring type coaxial laser cladding nozzle is provided with a slide seat sleeve which has a function of transitional connecting, and the lower part of the ring type coaxial laser cladding nozzle is formed by connecting up three parts of a nozzle core module. The upper part of the connecting sleeve is provided with four radical holes which are used for connecting the head part of a laser device; the lower part of the slide seat sleeve is provided with three chutes for receiving three fastening bolts. The inner part of the nozzle is provided with a laser beam, a shielding gas channel, a powder channel and a cooling water channel. The outer part of the laser beam and the shielding gas channel are connected with a shielding gas pipe; the outer part of the powder channel is connected with three powder inlet pipes. The outer part of the cooling water channel are respectively connected with a water inlet pipe and a water outlet pipe. The utility model can adjust and make rendezvous point of the powder and focus point of the laser coaxial and coincident; the operation is convenient and accurate, and the working is stable and reliable.
Description
Technical field
The utility model relates to laser melting and coating technique, specifically Ring Type Coaxial Laser Cladding Nozzle.
Background technology
Laser melting and coating technique is meant on coated matrix surface, place selected coated material with different adding material modes, through laser radiation make it to melt simultaneously with the matrix surface thin layer and rapid solidification after the extent of dilution that forms extremely low, become metallurgical binding with body material add the material cladding layer, thereby significantly improve the processing method of the performance such as wear-resisting, anti-corrosion, heat-resisting, anti-oxidant of substrate material surface.Because the approximate adiabatic rapid heating process that high-energy-density produced of laser beam is little to the heat affecting of base material, the distortion that causes is also little, can obtain extremely low thinning ratio, thereby can keep the excellent properties of former cladding material.Laser melting and coating technique is the higher process for modifying surface of a kind of economic benefit, can prepare high performance alloy surface on cheap mother metal, to reduce material cost, saves valuable Rare Metals Materials.Present method mainly contains precoating, side direction powder feeding and coaxial powder-feeding etc.Precoating method need be sticked and coated on workpiece surface to powder with binding agent before laser fusion, then laser fusion.Shortcoming is a complex procedures, is easy to generate defectives such as pore.Because laser will melt the powder of precoating earlier, is only matrix then, thinning ratio is difficult to control.The side direction powder feeding can realize that powder and matrix melt simultaneously, but that laser beam and the powder zone of action of giving overlap degree is wayward, occurs easily departing from, and is difficult for ensuring the quality of products in laser cladding process, and general powder using efficiency is on the low side.Coaxial powder-feeding can address these problems, and laser is given with powder is coaxial, can make it to coincide with the convergent point of powder by adjusting the laser focusing point, obtains maximum powder using efficiency and minimum thinning ratio.
The utility model content
The purpose of this utility model be to overcome existing precoating method schedule of operation complexity, easily produce pore, come off and shortcoming such as side direction powder feeding powder using efficiency is low, a kind of Ring Type Coaxial Laser Cladding Nozzle is provided, it is coaxial with laser focusing point and overlap realize to adjust the powder convergent point, and easy to operate, accurate, working stability, reliable.
Ring Type Coaxial Laser Cladding Nozzle of the present utility model by slide cover upwards link to each other with adapter sleeve, linking to each other with nozzle core downwards constitutes.
Adapter sleeve top has 4 radial holes, is used for linking to each other with the laser apparatus head.Adapter sleeve has partly been realized the functions such as radial position that be connected, adjust defocusing amount, adjustment powder convergent point of nozzle with laser head.
Slide cover bottom has 3 chutes holding three securing bolts, and the upper spray nozzle core can slippage up and down in this chute, thereby adjusts the axial location of powder convergent point.
Slide cover, flange and adapter sleeve constitute an adjustment module, in order to realize the connection of nozzle bottom and axially and radially to adjust, guarantee that laser beam axis and powder converge the inregister of axis.
Be provided with light beam and protection gas passage, powder channel, cooling-water duct in the nozzle, light beam and the external protection tracheae of protection gas passage, external three powder inlet pipes of powder channel, cooling-water duct is external inlet tube and outlet tube respectively.
Nozzle core is divided into upper spray nozzle core and following nozzle core two portions, and the two is with being threaded.The nozzle core center is a conical through-hole, is the common-use tunnel of laser beam and shielding gas.Upper spray nozzle core upper end is provided with protection eyeglass module.Shielding gas is blown into by inlet pipe, realizes the isolation of powder and focusing lens.
Gap between the inner conical surface of nozzle core male cone (strobilus masculinus) and intermediate sleeve has constituted the powder feeding passage, and the ring tapered gaps between the inner conical surface of the male cone (strobilus masculinus) of intermediate sleeve and overcoat has constituted cooling-water duct.Intermediate sleeve and overcoat adopt the soldering welded construction, to guarantee the stopping property of cooling channel.
Put symmetric two straight holes that have outward, be respectively water inlet and water outlet.Symmetricly in the cooling-water duct between water inlet and water outlet be provided with two dividing plates, realize that water coolant forces cooling jet, make nozzle lower end thermal radiation influence intensive position and effectively cooled off.Nozzle core then is to be realized by setting nut with being connected of intermediate sleeve.Setting nut screws with the outside screw of nozzle core and intermediate sleeve respectively, not only plays the effect that connects the two, and can change the relative axial position of nozzle core and intermediate sleeve by the rotation setting nut, thus the gap of adjusting powder feeding passage.Ring tapered gaps between nozzle core and the intermediate sleeve has constituted the powder feeding passage, and the gap length of powder feeding passage can accurately be adjusted by setting nut.Be provided with an O type circle between upper spray nozzle core and the intermediate sleeve,, thereby impel the powder a fluid stream more even in order to the resistance to air loss of assurance powder feeding passage.Establish three powder inlets on the intermediate sleeve, make powder thorough mixing in the circular channel, at last equably along ring conical passage ejection, avoided the phenomenon of the powder distribution inequality that vertically powder feeding causes.
The utility model is applicable to the monometallic powder, general surface laser cladding.The Nd:YAG laser that wavelength is 1.06 microns and the CO of high-power semiconductor laser and reflect focalization
2Laser.
The utility model compared with prior art has following advantage:
(1) gap length of the ring conical passage of powder feeding passage is adjustable, can adapt to the varigrained powder of cladding.
(2) establish 3 powder feeding mouths, and sufficiently long powder feeding passage is arranged, help improving the homogeneity of powder at convergent point.
(3) the powder convergent point not only can vertical stepless adjustment with respect to the position of laser spot, and can radially adjust, and other parts of regulating nozzle in the defocusing amount process do not rotate, and the external various pipelines of nozzle can not twine simple operation.Simple operation.
(4) the utility model adopts the design of water jacket to cool off, and has prolonged the working life of nozzle effectively.In water-cooling channel, be provided with isolation board device, avoided water coolant appearance " short circuit " phenomenon, improved cooling performance.
Description of drawings
Fig. 1 is the utility model Ring Type Coaxial Laser Cladding Nozzle structural representation;
Fig. 2 is parts 1,2,3 and 20 a partial enlarged drawing among Fig. 1;
Fig. 3 is the A-A schematic cross-section of parts 1,2,3,4 among Fig. 1.
Each unit number among the figure: 1---overcoat 2---intermediate sleeve 3---following nozzle core 4---the upper spray nozzle core 5---setting nut 6---back of the body female 7---slide cover 8---flange 9---the adjusting bolt 10---back of the body female 11---adapter sleeve 12---holding screw 13---pressure ring 14---protection eyeglass 15---O type circle 16---protection tracheae 17---powder inlet pipe 18---water-cooled tube 19---O type circle 20---dividing plate
Embodiment
As shown in Figure 1, 2, 3, the utility model can be divided into upper connecting sleeve part and lower nozzle part generally.
Upper connecting sleeve has partly realized the functions such as radial position that be connected, adjust defocusing amount, adjustment powder convergent point of nozzle with laser head.Its core members is a slide cover 7.Slide cover 7 upwards links to each other with adapter sleeve 11, links to each other with upper spray nozzle core 4 downwards.Flange 8 is locked at the adapter sleeve bottom end face, and adapter sleeve bottom cylindrical has 4 screws radially, realizes reliable connection of overlapping with slide by holding screw 12 and adjusting bolt 9.Regulate holding screw simultaneously and regulate bolt, can realize nozzle is radially adjusted, guarantee that laser beam axis and powder converge the inregister of axis.Adapter sleeve top has 4 radial holes, is used for linking to each other with the laser apparatus head.Slide cover bottom has 3 chutes, and the upper spray nozzle core can slippage up and down in this chute, thereby adjusts the axial location of powder convergent point.
In the lower nozzle part; along nozzle segment being cut open perpendicular to optical axis direction; constitute by light beam and protection gas passage, powder channel, cooling-water duct respectively from the inside to the outside; one of external protection tracheae, three of powder inlet pipes and inlet tube and outlet tube are each one respectively, thus the main part of looping coaxial powder-feeding nozzle.
Slide cover bottom links to each other with the upper spray nozzle core.Consider the manufacturability of processing, nozzle core is divided into the upper spray nozzle core and following nozzle core two portions are beneficial to processing, and the two is with being threaded.Upper spray nozzle core upper end compresses protection eyeglass 14 with pressure ring 13, and has O type circle 15 at the protection eyeglass, and shielding gas is blown into by inlet pipe 16, realizes the isolation of powder and focusing lens.
The nozzle core center is a conical through-hole, is the common-use tunnel of laser beam and shielding gas.
Gap between the inner conical surface of nozzle core male cone (strobilus masculinus) and intermediate sleeve 2 has constituted the powder feeding passage.Powder enters the powder feeding passage by three powder inlets 17 under the effect of inert carrier gas, thorough mixing and evenly ejection in the circular channel, finally converge at before the nozzle a bit.Nozzle core and intermediate sleeve be connected and the adjustment of the gap length of powder feeding passage then is to be realized by setting nut 5.Setting nut screws with the outside screw of nozzle core and intermediate sleeve respectively, not only plays the effect that connects the two, and can change the relative axial position of nozzle core and intermediate sleeve by the rotation setting nut, thus the gap of adjusting powder feeding passage.After finishing adjusting, female 6 lockings of the available back of the body are guaranteed to connect reliable.Be provided with an O type circle 19 between upper spray nozzle core and the intermediate sleeve,, thereby impel the powder a fluid stream more even in order to the resistance to air loss of assurance powder feeding passage.
And the ring tapered gaps between the inner conical surface of the male cone (strobilus masculinus) of intermediate sleeve and overcoat 1 has constituted cooling-water duct.Intermediate sleeve and overcoat adopt soldering to be welded as a whole, to guarantee the stopping property of cooling channel.Put symmetric two straight holes 18 that have outward, be respectively water inlet and water outlet.Symmetricly in the cooling-water duct between water inlet and water outlet be provided with two dividing plates 20, water coolant circulates by slit, dividing plate lower end, makes nozzle lower end thermal radiation influence intensive position and is effectively cooled off.
Consider that the nozzle lower end bearing intensive laser radiation and thermal radiation in the course of the work, and overcoat and intermediate sleeve adopt the soldering welded structure, red copper then has very high reflectivity to laser, and good thermal conductivity, and the weldability of soldering welding is good, so select the manufactured materials of red copper as overcoat, intermediate sleeve, upper and lower nozzle core for use.And consider the requirement of oxidation-resistance and intensity, adapter sleeve, slide cover, flange, setting nut, back of the body mother, pressure ring etc. all adopt the manufacturing of 1Cr18Ni9Ti stainless steel.Each pipeline is because the copper tube manufacturing is all selected in the requirement of soldering for use.When the utility model was used for laser apparatus, the protection eyeglass is optional to get final product with the simple glass plated film lens; When the utility model was used for the CO2 laser apparatus, the protection eyeglass must adopt the ZnSe eyeglass low to ir-absorbance.
Claims (6)
1, a kind of Ring Type Coaxial Laser Cladding Nozzle is characterized in that top is the adapter sleeve that links to each other with laser head, and the middle part is the slide cover, and the bottom is the continuous formations of nozzle core module three parts; Adapter sleeve top has 4 and is used for the radial hole that links to each other with the laser apparatus head, and slide cover bottom has 3 chutes that hold three securing bolts; Be provided with light beam and protection gas passage, powder channel, cooling-water duct in the nozzle, light beam and the external protection tracheae of protection gas passage, external three powder inlet pipes of powder channel, cooling-water duct is external inlet tube and outlet tube respectively.
2, Ring Type Coaxial Laser Cladding Nozzle according to claim 1 is characterized in that described nozzle core is divided into upper spray nozzle core and following nozzle core, and the two is with being threaded; The nozzle core center is a conical through-hole, is the common-use tunnel of laser beam and shielding gas; Upper spray nozzle core upper end is provided with protection eyeglass module.
3, Ring Type Coaxial Laser Cladding Nozzle according to claim 1 and 2, it is characterized in that the gap between the inner conical surface of nozzle core male cone (strobilus masculinus) and intermediate sleeve has constituted the powder feeding passage, establish three powder inlets on the intermediate sleeve, setting nut screws with the outside screw of nozzle core and intermediate sleeve respectively; Ring tapered gaps between the male cone (strobilus masculinus) of intermediate sleeve and the inner conical surface of overcoat has constituted cooling-water duct; Soldering welding between intermediate sleeve and the overcoat.
4, Ring Type Coaxial Laser Cladding Nozzle according to claim 3 puts symmetric two straight holes that have outside it is characterized in that, is respectively water inlet and water outlet; Be provided with two dividing plates in the cooling-water duct between water inlet and water outlet symmetrically.
5, Ring Type Coaxial Laser Cladding Nozzle according to claim 3 is characterized in that being provided with between upper spray nozzle core and the intermediate sleeve O type circle.
6, Ring Type Coaxial Laser Cladding Nozzle according to claim 4 is characterized in that being provided with between upper spray nozzle core and the intermediate sleeve O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200469529U CN2707772Y (en) | 2004-06-15 | 2004-06-15 | Ring type coaxial laser cladding nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200469529U CN2707772Y (en) | 2004-06-15 | 2004-06-15 | Ring type coaxial laser cladding nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2707772Y true CN2707772Y (en) | 2005-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNU2004200469529U Expired - Fee Related CN2707772Y (en) | 2004-06-15 | 2004-06-15 | Ring type coaxial laser cladding nozzle |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236284B (en) * | 2008-02-29 | 2010-04-14 | 哈尔滨工业大学 | Laser vacuum chamber focusing device |
| CN101942659A (en) * | 2010-09-28 | 2011-01-12 | 华南理工大学 | Laser cladding nozzle convenient for cooling and manufacturing method thereof |
| CN103212802A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Coaxial type nozzle used for laser micro machining of thin-walled tube |
| CN103320784A (en) * | 2013-04-27 | 2013-09-25 | 浙江工业大学 | Lateral powder feeding nozzle with adjustable width |
| CN103334101A (en) * | 2012-08-16 | 2013-10-02 | 张家港市和昊激光科技有限公司 | Coaxial nozzle for laser cladding |
| CN103526147A (en) * | 2013-10-21 | 2014-01-22 | 芜湖鼎恒材料技术有限公司 | No-water cut-off protection system for plasma spraying equipment |
| CN104141130A (en) * | 2014-07-31 | 2014-11-12 | 苏州市华宁机械制造有限公司 | Coaxial nozzle |
| CN104611696A (en) * | 2015-02-02 | 2015-05-13 | 温州大学 | Laser-cladding nozzle |
| CN105665705A (en) * | 2016-03-18 | 2016-06-15 | 山东能源重装集团大族再制造有限公司 | Metal 3D printing device |
| CN107009036A (en) * | 2017-04-10 | 2017-08-04 | 沈阳精新再制造有限公司 | One kind is used for laser melting coating cooling device |
| CN108127118A (en) * | 2018-01-19 | 2018-06-08 | 浙江万丰科技开发股份有限公司 | A kind of metal powder laser 3D printing nozzle |
| CN108456880A (en) * | 2018-05-24 | 2018-08-28 | 成都青石激光科技有限公司 | A kind of big defocus quantity regulating device of laser melting coating |
| CN110280763A (en) * | 2019-07-18 | 2019-09-27 | 哈尔滨理工大学 | Coaxial powder-feeding laser sintering device |
| CN110438492A (en) * | 2019-09-01 | 2019-11-12 | 陕西天元智能再制造股份有限公司 | A kind of recyclable laser cladding apparatus recycled of reflected light |
| CN110791755A (en) * | 2019-12-02 | 2020-02-14 | 丹阳市珠峰光电科技有限公司 | Laser cladding processing head |
| CN110831721A (en) * | 2017-03-29 | 2020-02-21 | 激光键合有限公司 | Methods, systems, and assemblies for laser deposition |
| CN111270193A (en) * | 2020-04-01 | 2020-06-12 | 山东大学 | Thermal spraying follow-up cooling device |
| CN111850547A (en) * | 2020-07-24 | 2020-10-30 | 西安建筑科技大学 | Multi-shaft ultrahigh-speed laser cladding nozzle |
| CN112703078A (en) * | 2019-06-07 | 2021-04-23 | 弗劳恩霍夫应用研究促进协会 | Coaxial powder nozzle tip module for workpiece surface treatment |
| CN113618086A (en) * | 2021-10-05 | 2021-11-09 | 哈尔滨理工大学 | Coaxial powder feeding nozzle device with high precision and high stability |
| CN114990543A (en) * | 2022-05-23 | 2022-09-02 | 浙江工业大学 | Powder magnetic damping speed reducer for laser cladding and manufacturing method |
| CN115074728A (en) * | 2022-08-24 | 2022-09-20 | 江苏海宇机械有限公司 | Laser cladding machine for forming metallurgical surface cladding layer |
-
2004
- 2004-06-15 CN CNU2004200469529U patent/CN2707772Y/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236284B (en) * | 2008-02-29 | 2010-04-14 | 哈尔滨工业大学 | Laser vacuum chamber focusing device |
| CN101942659A (en) * | 2010-09-28 | 2011-01-12 | 华南理工大学 | Laser cladding nozzle convenient for cooling and manufacturing method thereof |
| CN103212802A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Coaxial type nozzle used for laser micro machining of thin-walled tube |
| CN103334101B (en) * | 2012-08-16 | 2015-05-20 | 张家港市和昊激光科技有限公司 | Coaxial nozzle for laser cladding |
| CN103334101A (en) * | 2012-08-16 | 2013-10-02 | 张家港市和昊激光科技有限公司 | Coaxial nozzle for laser cladding |
| CN103320784B (en) * | 2013-04-27 | 2015-08-26 | 浙江工业大学 | The side direction powder-feeding nozzle of width-adjustable joint |
| CN103320784A (en) * | 2013-04-27 | 2013-09-25 | 浙江工业大学 | Lateral powder feeding nozzle with adjustable width |
| CN103526147A (en) * | 2013-10-21 | 2014-01-22 | 芜湖鼎恒材料技术有限公司 | No-water cut-off protection system for plasma spraying equipment |
| CN103526147B (en) * | 2013-10-21 | 2015-07-08 | 芜湖鼎恒材料技术有限公司 | No-water cut-off protection system for plasma spraying equipment |
| CN104141130A (en) * | 2014-07-31 | 2014-11-12 | 苏州市华宁机械制造有限公司 | Coaxial nozzle |
| CN104611696A (en) * | 2015-02-02 | 2015-05-13 | 温州大学 | Laser-cladding nozzle |
| CN104611696B (en) * | 2015-02-02 | 2017-03-15 | 温州大学 | A kind of laser melting-painting nozzle |
| CN105665705A (en) * | 2016-03-18 | 2016-06-15 | 山东能源重装集团大族再制造有限公司 | Metal 3D printing device |
| CN110831721A (en) * | 2017-03-29 | 2020-02-21 | 激光键合有限公司 | Methods, systems, and assemblies for laser deposition |
| CN107009036B (en) * | 2017-04-10 | 2018-12-14 | 沈阳精新再制造有限公司 | One kind being used for laser melting coating cooling device |
| CN107009036A (en) * | 2017-04-10 | 2017-08-04 | 沈阳精新再制造有限公司 | One kind is used for laser melting coating cooling device |
| CN108127118A (en) * | 2018-01-19 | 2018-06-08 | 浙江万丰科技开发股份有限公司 | A kind of metal powder laser 3D printing nozzle |
| CN108456880A (en) * | 2018-05-24 | 2018-08-28 | 成都青石激光科技有限公司 | A kind of big defocus quantity regulating device of laser melting coating |
| CN112703078A (en) * | 2019-06-07 | 2021-04-23 | 弗劳恩霍夫应用研究促进协会 | Coaxial powder nozzle tip module for workpiece surface treatment |
| CN110280763A (en) * | 2019-07-18 | 2019-09-27 | 哈尔滨理工大学 | Coaxial powder-feeding laser sintering device |
| CN110438492A (en) * | 2019-09-01 | 2019-11-12 | 陕西天元智能再制造股份有限公司 | A kind of recyclable laser cladding apparatus recycled of reflected light |
| CN110791755A (en) * | 2019-12-02 | 2020-02-14 | 丹阳市珠峰光电科技有限公司 | Laser cladding processing head |
| CN111270193B (en) * | 2020-04-01 | 2020-11-24 | 山东大学 | Thermal spraying follow-up cooling device |
| CN111270193A (en) * | 2020-04-01 | 2020-06-12 | 山东大学 | Thermal spraying follow-up cooling device |
| CN111850547A (en) * | 2020-07-24 | 2020-10-30 | 西安建筑科技大学 | Multi-shaft ultrahigh-speed laser cladding nozzle |
| CN111850547B (en) * | 2020-07-24 | 2024-04-12 | 西安建筑科技大学 | Multi-shaft ultra-high-speed laser cladding spray head |
| CN113618086A (en) * | 2021-10-05 | 2021-11-09 | 哈尔滨理工大学 | Coaxial powder feeding nozzle device with high precision and high stability |
| CN114990543A (en) * | 2022-05-23 | 2022-09-02 | 浙江工业大学 | Powder magnetic damping speed reducer for laser cladding and manufacturing method |
| CN114990543B (en) * | 2022-05-23 | 2024-05-03 | 浙江工业大学 | Powder magnetic damping speed reducer for laser cladding and manufacturing method |
| CN115074728A (en) * | 2022-08-24 | 2022-09-20 | 江苏海宇机械有限公司 | Laser cladding machine for forming metallurgical surface cladding layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dongguan Trump Opto-Electronic Co., Ltd. Assignor: South China University of Technology Contract fulfillment period: 2006.9.30 to 2012.9.30 Contract record no.: 2009440000092 Denomination of utility model: Ring type coaxial laser cladding nozzle Granted publication date: 20050706 License type: Exclusive license Record date: 20090109 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.9.30 TO 2012.9.30; CHANGE OF CONTRACT Name of requester: DONGGUAN CITY CHUANGPU PHOTOELECTRICITY TECHNOLOGY Effective date: 20090109 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050706 |