CN103882425B - A kind of laser melting coating pulsed powder feeder with rotating powder groove scraper plate - Google Patents
A kind of laser melting coating pulsed powder feeder with rotating powder groove scraper plate Download PDFInfo
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- CN103882425B CN103882425B CN201410142354.XA CN201410142354A CN103882425B CN 103882425 B CN103882425 B CN 103882425B CN 201410142354 A CN201410142354 A CN 201410142354A CN 103882425 B CN103882425 B CN 103882425B
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- 239000000843 powder Substances 0.000 title claims abstract description 138
- 239000011248 coating agent Substances 0.000 title claims abstract description 19
- 238000000576 coating method Methods 0.000 title claims abstract description 19
- 238000002844 melting Methods 0.000 title claims abstract description 19
- 230000008018 melting Effects 0.000 title claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 59
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000005253 cladding Methods 0.000 description 4
- 238000004372 laser cladding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005542 laser surface treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention provides a kind of laser melting coating pulsed powder feeder with rotating powder groove scraper plate, comprising worktable, multiple worktable leg, powder-storage bin, rotating disk, scraper plate, powder conveying pipe, turntable shaft, rotating disk drive-motor, scraper plate driving cylinder, cylinder mount frame, powder-storage bin anchor and multiple rotating disk rolling assembly; The arranged outside that center of turntable is justified has four radial storage powder grooves, is communicated with between adjacent two storage powder grooves by a deep-slotted chip breaker; The exit end face of powder-storage bin is mutually concordant with the upper surface of rotating disk, and higher than storing up the groove bottom of powder groove; The cross section of scraper plate is circular arc, and the position of powder conveying pipe is corresponding with the terminal position of scraper plate translational motion.Powder in the present invention falls from powder-storage bin, and the storage powder groove of rotating disk is piled up, scraper plate translational motion, powder is scraped into powder conveying pipe from rotating disk, and powder is sent due to action of gravity; By the control regulating the rotating speed of rotating disk and the displacement of scraper plate can realize powder feeding rate easily, and then achieve pulsed powder feeding.
Description
Technical field
The invention belongs to field of laser cladding, being specifically related to a kind of laser melting coating pulsed powder feeder with rotating powder groove scraper plate.
Background technology
Laser melting and coating technique has important application prospect in industrial application and science lap tool are studied carefully, laser melting and coating technique is as one of the important technology of Laser Surface Treatment, high performance surface can be obtained on low cost matrix, thus valuable and rare metal metallic substance can be saved in a large number, reduce energy consumption.And the design and development of powder feeder is one of gordian technique of laser cladding equipment, the quality of powder feeder performance is directly connected to the quality of laser cladding layer.
Powder feeder of the prior art is all generally continuous powder feeding, such as document " design of laser melting coating balancing point scraper-type synchronous powder feeder " (author: Qin Lanyun, Yang Guang, Wang Wei, Tong Ming, Wang Xingliang, manufacturing technology and lathe, 2010.6) disclosed in scraper-type powder feeder, the powder sending quantity of continuous powder feeding is larger, and only applicable big area cladding application and three-dimensional manufacture fast.But for the fine fusion covering of size below grade, the unit time powder sending quantity of present powder feeder is all excessive, easily causes cladding area excessive blocked up, makes following process amount large; Be difficult at the cladding position of workpiece especially or cannot be very restricted under the occasion of following process.Simultaneously, the small especially and discontinuous distribution of the defect of some workpiece surface is (as little wearing and tearing hole, slight crack, small holes and corrosion pit etc.), when utilizing laser melting coating to repair this type of part, the powder feeder of successive type, large powder sending quantity cannot meet the requirement of work at all; In addition, when frequent replacing different workpieces and cladding position, according to successive type powder feeder, then must ceaselessly start and stop powder feeder, trivial operations.
Existing pulse type dust feeder such as application number is the Chinese invention patent " a kind of pulse type dust feeder " of 200810197226.X, and its structure have employed the mode of solenoid control piston motion, achieves the pulse powder feeding of controllable precise.But have the following disadvantages: 1, powder bucket and the necessary vertical distribution of powder conveying pipe, makes powder feeding path fix, can not change powder feeding position; 2, structure is too compact, the magnetic valve of employing and piston structure, and not easily, dismounting more not easily, is difficult to thoroughly clean powder conveyer when stifled powder or when changing powder in assembling; 3, the limited lifetime of magnetic valve, makes the reliability of powder conveyer not high.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of powder sending quantity little, control the easy laser melting coating pulsed powder feeder with rotating powder groove scraper plate.
The present invention is achieved through the following technical solutions:
With the laser melting coating pulsed powder feeder rotating powder groove scraper plate, comprise worktable, multiple worktable leg, powder-storage bin, rotating disk, scraper plate, powder conveying pipe, turntable shaft, rotating disk drive-motor, scraper plate driving cylinder, cylinder mount frame, powder-storage bin anchor and multiple rotating disk rolling assembly;
Multiple worktable legs are arranged on the bottom surface of worktable, are got up by worktable support; Described powder-storage bin is fixedly mounted on the side of worktable by powder-storage bin anchor; The outlet of powder-storage bin is positioned at the top of rotating disk just; The opposite side of worktable is provided with cylinder mount frame, and described scraper plate drives cylinder to be fixedly mounted on the table by cylinder mount frame, and is positioned at the top of rotating disk; Scraper plate drives the actuating station of cylinder to be fixedly connected with the upper end of scraper plate, does translational motion for driving scraper plate; Described scraper plate drives the installation position of cylinder that the direction of motion of its actuating station should be made consistent with the radial direction of rotating disk;
The upper surface of worktable offers a through hole and an annular groove, the central axes of described through hole and annular groove; Described rotating disk drive-motor is fixed on the bottom surface of worktable by an electric machine support, and the motor shaft of described rotating disk drive-motor, from the bottom to top through the through hole on worktable, is connected with the lower end of turntable shaft by shaft coupling; The upper end of described turntable shaft is inserted in the open holes on rotating disk bottom surface, and with rotating disk shrink-fit, turntable shaft and rotating disk are linked;
Described rotating disk is disc, and the central position of its upper surface is provided with a center circle, and the arranged outside of described center circle has four radial storage powder grooves, the angle degree of being between adjacent two storage powder grooves; Be communicated with by a deep-slotted chip breaker between adjacent two storage powder grooves, four deep-slotted chip breakers are positioned at circumferentially same; The center of circle of circumference and the center of circle of center circle of described four deep-slotted chip breakers composition overlap; The exit end face of powder-storage bin is mutually concordant with the upper surface of rotating disk, and higher than storing up the groove bottom of powder groove;
Described multiple rotating disk rolling assembly is evenly arranged on the lower surface of rotating disk, described rotating disk rolling assembly comprises universal rotating shaft, rolling sphere bracket and spin, spin is by hinge on rolling sphere bracket, and described rolling sphere bracket is connected to the lower surface of rotating disk by universal rotating shaft; The size of described spin is less than the annular groove size on worktable, and make when rotating disk drive-motor drives turntable rotation, spin can be rolled along annular groove;
The cross section of described scraper plate is circular arc, and the width of scraper plate is consistent with the width of storage powder groove, and the thickness of scraper plate is less than the width of deep-slotted chip breaker; Described scraper plate should make the center of circle of the circular arc corresponding to scraper plate overlap with the center of circle of center circle with the installation position of rotating disk;
Described powder conveying pipe is installed in powder conveying pipe open holes on the table; The position of described powder conveying pipe is corresponding with the terminal position of scraper plate translational motion, the powder making powder conveying pipe just can receive scraper plate to scrape from storage powder groove.
Preferably, can also be provided with an arc guide barrel on the upper surface of described rotating disk, between adjacent two storage powder grooves, the center of circle of the circular arc corresponding to described arc guide barrel overlaps with the center of circle of center circle; The groove bottom of arc guide barrel is mutually concordant with the exit end face of powder-storage bin, and when making turntable rotation, the outlet of powder-storage bin contacts with the groove bottom of arc guide barrel all the time.
Preferably, powder conveying pipe is flat square or bores pointed or sleeve-shaped.
The present invention has following beneficial effect:
1, the powder in the present invention falls from powder-storage bin, and the storage powder groove of rotating disk is piled up, scraper plate translational motion, powder is scraped into powder conveying pipe from rotating disk, and powder is sent due to action of gravity, thus realizes pulsed powder feeding.
2, the rotating speed of rotating disk is regulated by rotating disk drive-motor; the powder-storage bin powder falling time (that is powder falling amount) can be regulated; the control of powder feeding rate can be realized easily; because rotating disk drive-motor can regulate in real time, online, automatically; the powder sending quantity of laser melting coating pulsed powder feeder of the present invention is made to regulate very convenient, automatization; by the pre-programmed to electric machine rotation, non-stop-machine powder sending quantity in laser cladding process can be met and change.
3, laser melting coating pulsed powder feeder of the present invention have employed modularization, separate type design, especially adopt between rotating disk and worktable Universal wheel structure instead of tradition be difficult to assemble Bearning mechanism, make rotating disk, powder-storage bin, scraper plate etc. can dismounting easily, be convenient to thoroughly clean powder conveyer where necessary;
4, laser melting coating pulsed powder feeder of the present invention, the dimensional fits restriction that powder-storage bin outlet and powder conveying pipe are not fixed, can realize powder sending quantity by the outlet of change powder-storage bin and regulate, large powder sending quantity, little powder sending quantity and micro-powder sending quantity all can realize; Can also change the physical dimension of powder conveying pipe, the profile of powder conveying pipe can be flat square or bore pointed or sleeve-shaped, thus realizes wire or point-like powder feeding or annular powder feeding;
5, laser melting coating pulsed powder feeder of the present invention, compare the continuous powder feeder of traditional screeds formula, the cross section of its scraper plate is circular arc, the on the one hand width of scraper plate thus not leakiness powder consistent with the width storing up powder groove, when on the other hand making to scrape powder, powder to slide thus scraper plate not easily blocks along arc surface, integrates and greatly reduces stifled powder phenomenon;
6, laser melting coating pulsed powder feeder of the present invention, without magnetic valve, have employed complete mechanical automatic powder feeding system, and be all mechanical component with the parts of powder contact, reliability is high, long working life.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram one of laser melting coating pulsed powder feeder;
Fig. 2 is the three-dimensional structure diagram two of laser melting coating pulsed powder feeder;
Fig. 3 is the structure iron of worktable;
Fig. 4 is the structure iron of disk upper surface;
Fig. 5 is the structure iron of disk lower surface;
Fig. 6 is the structure iron of scraper plate;
Fig. 7 is the structure iron of rotating disk and rotating disk rolling assembly;
Fig. 8 is a kind of preferred structure figure of rotating disk;
In figure, the implication of each label is as follows:
Worktable 1, multiple worktable leg 2, powder-storage bin 3, rotating disk 4, scraper plate 5, powder conveying pipe 6, turntable shaft 7, rotating disk drive-motor 8, scraper plate drive cylinder 9, cylinder mount frame 10, powder-storage bin anchor 11, through hole 12, annular groove 13, powder conveying pipe open holes 14, open holes 41, center circle 42, storage powder groove 43, deep-slotted chip breaker 44, universal rotating shaft 45, rolling sphere bracket 46, spin 47, arc guide barrel 48.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in figs. 1-7, the invention provides a kind of laser melting coating pulsed powder feeder with rotating powder groove scraper plate, comprising worktable 1, multiple worktable leg 2, powder-storage bin 3, powder dispense rotating disk 4, scraper plate 5, powder conveying pipe 6, turntable shaft 7, rotating disk drive-motor 8, scraper plate driving cylinder 9, cylinder mount frame 10, powder-storage bin anchor 11 and multiple rotating disk rolling assembly;
Multiple worktable legs 2 are arranged on the bottom surface of worktable 1, are supported by worktable 1; Described powder-storage bin 3 is fixedly mounted on the side of worktable 1 by powder-storage bin anchor 11; The outlet of powder-storage bin 3 is positioned at the top of rotating disk 4 just; The opposite side of worktable 1 is provided with cylinder mount frame 10, and described scraper plate drives cylinder 9 to be fixedly mounted on worktable 1 by cylinder mount frame 10, and is positioned at the top of rotating disk 4; Scraper plate drives the actuating station of cylinder 9 to be fixedly connected with the upper end of scraper plate 5, does translational motion for driving scraper plate 5; Described scraper plate drives the installation position of cylinder 9 that the direction of motion of its actuating station should be made consistent with the radial direction of rotating disk 4;
The upper surface of worktable 1 offers through hole 12 and an annular groove 13, the central axes of described through hole 12 and annular groove 13; Described rotating disk drive-motor 8 is fixed on by an electric machine support on the bottom surface of worktable 1, and the motor shaft of described rotating disk drive-motor 8, from the bottom to top through the through hole 12 on worktable 1, is connected by the lower end of shaft coupling with turntable shaft 7; The upper end of described turntable shaft 7 is inserted in the open holes 41 on rotating disk 4 bottom surface, and with rotating disk 4 shrink-fit, turntable shaft 7 and rotating disk 4 are linked;
Described rotating disk 4 is in disc, and the central position of its upper surface is provided with a center circle 42, and the arranged outside of described center circle 42 has four radial storage powder grooves 43, and the angles between adjacent two storage powder grooves 43 are 90 degree; Be communicated with by a deep-slotted chip breaker 44 between adjacent two storage powder grooves 43, four deep-slotted chip breakers 44 are positioned at circumferentially same; The center of circle of the circumference that described four deep-slotted chip breakers 44 form and the center of circle of center circle 42 overlap; The exit end face of powder-storage bin 3 is mutually concordant with the upper surface of rotating disk 4, and higher than storing up the groove bottom of powder groove 43;
Described multiple rotating disk rolling assembly is evenly arranged on the lower surface of rotating disk 4, described rotating disk rolling assembly comprises universal rotating shaft 45, rolling sphere bracket 46 and spin 47, spin 47 is by hinge on rolling sphere bracket 46, and described rolling sphere bracket 46 is connected to the lower surface of rotating disk 4 by universal rotating shaft 45; The size of described spin 47 is less than annular groove 13 size on worktable 1, and make when rotating disk drive-motor 8 drives rotating disk 4 to rotate, spin 47 can be rolled along annular groove 13;
The upper end of described scraper plate 5 is fixedly mounted on the actuating station that scraper plate drives cylinder 9, and the cross section of described scraper plate 5 is circular arc, and the width of scraper plate 5 is consistent with the width of storage powder groove 43, and the thickness of scraper plate 5 is less than the width of deep-slotted chip breaker 44; Described scraper plate 5 should make the center of circle of the circular arc corresponding to scraper plate 5 overlap with the center of circle of center circle 42 with the installation position of rotating disk 4; Scraper plate 5 can do translational motion along storage powder groove 43;
Described powder conveying pipe 6 is arranged in the powder conveying pipe open holes 14 on worktable 1; The position of described powder conveying pipe 6 is corresponding with the terminal position of scraper plate 5 translational motion, the powder making powder conveying pipe 6 just can receive scraper plate 5 to scrape from storage powder groove 43.
Preferably, as shown in Figure 8, can also be provided with an arc guide barrel 48 on the upper surface of described rotating disk 4, between adjacent two storage powder grooves 43, the center of circle of the circular arc corresponding to described arc guide barrel 48 overlaps with the center of circle of center circle 42; The groove bottom of arc guide barrel 48 is mutually concordant with the exit end face of powder-storage bin 3, and when rotating disk 4 is rotated, the outlet of powder-storage bin 3 contacts with the groove bottom of arc guide barrel 48 all the time, effectively prevents powder from overflowing.
Preferably, the profile of powder conveying pipe 6 can be flat square or bore pointed or sleeve-shaped, thus can realize wire or point-like powder feeding or annular powder feeding.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All like this to the apparent amendment of the technician in described field, by be included in this claim scope within.
Claims (1)
1. the laser melting coating pulsed powder feeder with rotation powder groove scraper plate, it is characterized in that, comprise worktable (1), multiple worktable leg (2), powder-storage bin (3), rotating disk (4), scraper plate (5), powder conveying pipe (6), turntable shaft (7), rotating disk drive-motor (8), scraper plate driving cylinder (9), cylinder mount frame (10), powder-storage bin anchor (11) and multiple rotating disk rolling assembly;
Multiple worktable legs (2) are arranged on the bottom surface of worktable (1), are supported by worktable (1); Described powder-storage bin (3) is fixedly mounted on the side of worktable (1) by powder-storage bin anchor (11); The outlet of powder-storage bin (3) is positioned at the top of rotating disk (4) just; The opposite side of worktable (1) is provided with cylinder mount frame (10), described scraper plate drives cylinder (9) to be fixedly mounted on worktable (1) by cylinder mount frame (10), and is positioned at the top of rotating disk (4); Scraper plate drives the actuating station of cylinder (9) to be fixedly connected with the upper end of scraper plate (5), does translational motion for driving scraper plate (5); Described scraper plate drives the installation position of cylinder (9) that the direction of motion of its actuating station should be made consistent with the radial direction of rotating disk (4);
The upper surface of worktable (1) offers a through hole (12) and an annular groove (13), the central axes of described through hole (12) and annular groove (13); Described rotating disk drive-motor (8) is fixed on by an electric machine support on the bottom surface of worktable (1), the motor shaft of described rotating disk drive-motor (8), from the bottom to top through the through hole (12) on worktable (1), is connected by the lower end of shaft coupling with turntable shaft (7); The upper end of described turntable shaft (7) is inserted in the open holes (41) on rotating disk (4) bottom surface, and with rotating disk (4) shrink-fit, turntable shaft (7) and rotating disk (4) are linked;
Described rotating disk (4) is in disc, the central position of its upper surface is provided with a center circle (42), the arranged outside of described center circle (42) has four radial storage powder grooves (43), and the angles between adjacent two storages powder groove (43) are (90) degree; Be communicated with by a deep-slotted chip breaker (44) between adjacent two storages powder groove (43), four deep-slotted chip breakers (44) are positioned at circumferentially same; The center of circle of the circumference that described four deep-slotted chip breakers (44) form and the center of circle of center circle (42) overlap; The exit end face of powder-storage bin (3) is mutually concordant with the upper surface of rotating disk (4), and higher than storing up the groove bottom of powder groove (43);
Described multiple rotating disk rolling assembly is evenly arranged on the lower surface of rotating disk (4), described rotating disk rolling assembly comprises universal rotating shaft (45), rolling sphere bracket (46) and spin (47), spin (47) is by hinge on rolling sphere bracket (46), and described rolling sphere bracket (46) is connected to the lower surface of rotating disk (4) by universal rotating shaft (45); The size of described spin (47) is less than annular groove (13) size on worktable (1), make when rotating disk drive-motor (8) drives rotating disk (4) to rotate, spin (47) can be rolled along annular groove (13);
The cross section of described scraper plate (5) is circular arc, and the width of scraper plate (5) is consistent with the width of storage powder groove (43), and the thickness of scraper plate (5) is less than the width of deep-slotted chip breaker (44); Described scraper plate (5) and the installation position of rotating disk (4) should make the center of circle of the circular arc corresponding to scraper plate (5) overlap with the center of circle of center circle (42);
Described powder conveying pipe (6) is arranged in the powder conveying pipe open holes (14) on worktable (1); The position of described powder conveying pipe (6) is corresponding with the terminal position of scraper plate (5) translational motion, makes powder conveying pipe (6) just can receive scraper plate (5) from storage powder groove (43) powder that scrapes;
Can also be provided with an arc guide barrel (48) on the upper surface of described rotating disk (4), between adjacent two storages powder groove (43), the center of circle of the circular arc corresponding to described arc guide barrel (48) overlaps with the center of circle of center circle (42); The groove bottom of arc guide barrel (48) is mutually concordant with the exit end face of powder-storage bin (3), and when rotating disk (4) is rotated, the outlet of powder-storage bin (3) contacts with the groove bottom of arc guide barrel (48) all the time;
Powder conveying pipe (6) is flat square or bores pointed or sleeve-shaped.
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Families Citing this family (7)
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CN104959805A (en) * | 2015-06-30 | 2015-10-07 | 苏州石丸英合精密机械有限公司 | Lining supply and press-in device of automobile door hinge assembly line |
CN108165724A (en) * | 2017-10-30 | 2018-06-15 | 浙江超龙汽车零部件有限公司 | Roll reinforcing bar carrier rotating mechanism |
CN109229993A (en) * | 2018-10-08 | 2019-01-18 | 广州维港环保科技有限公司 | A kind of block-proof type center feeder |
CN110592581A (en) * | 2019-10-24 | 2019-12-20 | 江苏点金激光科技有限公司 | Powder feeding device suitable for laser cladding |
CN112620650A (en) * | 2020-12-14 | 2021-04-09 | 太原理工大学 | Component-adjustable metal laser selective melting preparation device and preparation method |
CN113828925B (en) * | 2021-11-26 | 2022-02-25 | 北京煜鼎增材制造研究院有限公司 | Gravity powder feeding method and device |
CN116926535B (en) * | 2023-07-27 | 2024-03-26 | 齐鲁工业大学(山东省科学院) | Laser cladding high-entropy alloy powder presetting device and method |
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CN2584340Y (en) * | 2002-12-13 | 2003-11-05 | 郑州大学 | Power feeder for laser coating |
CN2683607Y (en) * | 2003-10-01 | 2005-03-09 | 李鲁伯 | Powder feeding device with multiple stock bins |
CN203096173U (en) * | 2013-01-15 | 2013-07-31 | 沈阳大陆激光柔性制造技术有限公司 | High-precision gravity powder feeder |
CN203794993U (en) * | 2014-04-02 | 2014-08-27 | 温州职业技术学院 | Laser cladding impulse type powder feeder with rotary powder grooves and scraping plate |
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US7043330B2 (en) * | 2002-10-31 | 2006-05-09 | Ehsan Toyserkani | System and method for closed-loop control of laser cladding by powder injection |
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Patent Citations (4)
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CN2584340Y (en) * | 2002-12-13 | 2003-11-05 | 郑州大学 | Power feeder for laser coating |
CN2683607Y (en) * | 2003-10-01 | 2005-03-09 | 李鲁伯 | Powder feeding device with multiple stock bins |
CN203096173U (en) * | 2013-01-15 | 2013-07-31 | 沈阳大陆激光柔性制造技术有限公司 | High-precision gravity powder feeder |
CN203794993U (en) * | 2014-04-02 | 2014-08-27 | 温州职业技术学院 | Laser cladding impulse type powder feeder with rotary powder grooves and scraping plate |
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