CN113981439A - Laser powder feeding cladding head and laser cladding gun - Google Patents
Laser powder feeding cladding head and laser cladding gun Download PDFInfo
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- CN113981439A CN113981439A CN202111246909.1A CN202111246909A CN113981439A CN 113981439 A CN113981439 A CN 113981439A CN 202111246909 A CN202111246909 A CN 202111246909A CN 113981439 A CN113981439 A CN 113981439A
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- 239000000843 powder Substances 0.000 title claims abstract description 133
- 238000005253 cladding Methods 0.000 title claims abstract description 37
- 238000004372 laser cladding Methods 0.000 title claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 37
- 238000007906 compression Methods 0.000 claims abstract description 37
- 239000011148 porous material Substances 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 35
- 239000000498 cooling water Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 238000005524 ceramic coating Methods 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 claims description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009702 powder compression Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention provides a laser powder feeding cladding head and a laser cladding gun, and relates to the technical field of laser cladding; the body is internally provided with a light-emitting central pore passage, and the tail end protective sleeve is sleeved outside the tail end of the body; a space clamped between the inner peripheral wall of the powder feeding compression passage and the outer peripheral wall of the tail end of the body forms an annular powder feeding compression passage around the axial center line of the body, or an annular powder feeding compression passage around the axial center line of the body is arranged in the powder feeding compression passage; the annular powder feeding compression channel extends to the tail end face of the tail end protective sleeve and is communicated with an external environment to form a powder outlet, and the tail width of the annular powder feeding compression channel gradually narrows from the front end to the tail end; and a powder feeding port communicated with the powder feeding compression channel is formed in the peripheral wall of the tail end protective sleeve. The laser cladding gun comprises the laser powder feeding cladding head. The invention solves the technical problems of complex installation structure and low powder utilization rate of the laser cladding gun in the prior art.
Description
Technical Field
The invention relates to the technical field of laser cladding, in particular to a laser powder feeding cladding head and a laser cladding gun.
Background
The laser cladding or laser cladding is a new surface modification technology, and a cladding material is added on the surface of a base material, and is fused with a thin layer on the surface of the base material by using a high-energy-density laser beam, so that a metallurgically bonded cladding layer is formed on the surface of a base layer, and the product performance is greatly improved. The laser cladding gun is applied more, at present, a plurality of powder feeders are generally installed on the outer wall of a laser nozzle of the laser cladding gun, each powder feeder is provided with a through hole, and powder is fed to a laser spot through the through hole, so that the problems that an existing laser cladding gun at least has a complex installation structure and low powder utilization rate are caused.
Disclosure of Invention
The invention aims to provide a laser powder feeding cladding head and a laser cladding gun, so as to at least relieve the technical problems of complex mounting structure and low powder utilization rate of the laser cladding gun in the prior art.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a laser powder feeding cladding head, including a body and a tail end protective sleeve;
a light-emitting central pore canal which penetrates through the body along the axial central line of the body is arranged in the body;
the light-emitting end of the light-emitting central pore passage is taken as a tail end, the other end of the light-emitting central pore passage is taken as a front end, and the tail end protective sleeve is sleeved outside the tail end of the body;
a space clamped between the inner peripheral wall of the tail end protective sleeve and the tail end outer peripheral wall of the body forms an annular powder feeding compression channel around the axial center line of the body, or the tail end protective sleeve is internally provided with an annular powder feeding compression channel around the axial center line of the body;
the annular powder feeding compression channel extends to the tail end face of the tail end protective sleeve and is communicated with an external environment to form a powder outlet, and the tail width of the annular powder feeding compression channel gradually narrows along the direction that the front end of the light outlet central pore channel extends to the tail end of the light outlet central pore channel;
and the peripheral wall of the tail end protective sleeve is provided with a powder feeding port communicated with the powder feeding compression channel.
In an alternative embodiment, the front end of the light-emitting central hole is a cylindrical hole, and the tail end of the light-emitting central hole is a tapered hole with a diameter gradually decreasing from the front end to the tail end; the outer contour of the tail end protective sleeve is in a cone shape, the diameter of the outer contour of the tail end protective sleeve is gradually reduced from the front end of the light-emitting central pore passage to the tail end of the light-emitting central pore passage in the extending direction.
In an optional implementation manner, the peripheral wall of the tail end protective sleeve is provided with a plurality of powder feeding ports, and the plurality of powder feeding ports are uniformly distributed at equal intervals along the radial circumferential direction of the tail end protective sleeve.
In an alternative embodiment, a powder feeding joint is installed in the powder feeding port.
In an optional embodiment, along the extending direction of the light-emitting central pore passage, a cooling water passage is arranged in the peripheral wall of the middle area of the body, and a water inlet communicated with one end of the cooling water passage and a water outlet communicated with the other end of the cooling water passage are arranged on the peripheral wall of the body.
In an optional embodiment, along the extending direction of the light-emitting central pore passage, a cooling water jacket is sleeved outside the middle region of the body, a cooling water passage is arranged inside the cooling water jacket, and a water inlet communicated with one end of the cooling water passage and a water outlet communicated with the other end of the cooling water passage are formed in the outer peripheral surface of the cooling water jacket.
In an optional embodiment, along the extending direction of the light-emitting central pore passage, a protective gas air supply port communicated with the light-emitting central pore passage is formed in the outer peripheral wall of the front end region of the body.
In an alternative embodiment, the outer circumference of the trailing protective sheath is coated with a zirconia coating and/or a yttria coating.
In an alternative embodiment, the outer peripheral wall of the tail portion of the body and the inner peripheral wall of the tail end protective sleeve are coated with high temperature and wear resistant ceramic coatings.
In a second aspect, an embodiment of the present invention provides a laser cladding gun, including the laser powder feeding cladding head described in any one of the foregoing embodiments.
The embodiment of the invention can realize the following beneficial effects:
in a first aspect, an embodiment of the present invention provides a laser powder feeding cladding head, including a body and a tail end protective sleeve; specifically, a light-emitting central pore canal which runs through the body along the axial central line of the body is arranged in the body; the light-emitting end of the light-emitting central pore passage is used as the tail end, the other end of the light-emitting central pore passage is used as the front end, and the tail end protective sleeve is sleeved outside the tail end of the body. The space between the inner peripheral wall of the tail end protective sleeve and the tail end outer peripheral wall of the body forms an annular powder feeding compression channel around the axial center line of the body, or the tail end protective sleeve is internally provided with the annular powder feeding compression channel around the axial center line of the body. The annular powder feeding compression channel extends to the tail end face of the tail end protective sleeve and is communicated with an external environment to form a powder outlet, and the tail width of the annular powder feeding compression channel gradually narrows along the direction in which the front end of the light outlet central pore channel extends to the tail end of the light outlet central pore channel. And a powder feeding port communicated with the powder feeding compression channel is formed in the peripheral wall of the tail end protective sleeve.
In the embodiment of the invention, the tail end protective sleeve and the annular powder feeding compression channel are arranged to replace the outer wall of the laser nozzle to install a plurality of powder feeders, so that the structure of the laser nozzle is simplified, meanwhile, the width of the tail part of the annular powder feeding compression channel is gradually narrowed along the direction of extending from the front end of the light outlet central pore channel to the tail end of the light outlet central pore channel, so that powder enters from the powder inlet on the outer peripheral wall of the tail end protective sleeve under the action of powder feeding airflow in the powder feeding process, and is pressurized by the annular powder feeding compression channel, discharged from the peripheral side of the light outlet central pore channel and converged to a laser focusing point, and the powder utilization rate can be effectively improved.
In summary, the embodiment of the invention at least alleviates the technical problems of complex mounting structure and low powder utilization rate of the laser cladding gun in the prior art.
A second aspect of the embodiments of the present invention further provides a laser cladding gun, including the laser powder feeding cladding head provided in the first aspect; the laser cladding gun provided by the embodiment of the invention comprises the laser powder feeding cladding head provided by the first aspect, so that the laser cladding gun provided by the embodiment of the invention can achieve all the beneficial effects which can be achieved by the laser powder feeding cladding head provided by the first aspect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an overall structural cross-sectional view of an alternative embodiment of a laser powder feeding cladding head provided in an embodiment of the present invention;
fig. 2 is a cross-sectional view of an overall structure of another alternative embodiment of a laser powder feeding cladding head provided in an embodiment of the present invention.
Icon: 1-body; 10-a light-emitting central pore channel; 11-a shielding gas supply port; 2-tail end protecting sleeve; 20-an annular powder feeding compression channel; 21-powder feeding joint; 3-cooling the water jacket; 30-cooling water channels; 31-water inlet joint; 32-water outlet joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "front", "rear", "middle", "center", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships conventionally put on products of the present invention when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example one
The embodiment provides a laser powder feeding cladding head, and referring to fig. 1 and 2, the laser powder feeding cladding head comprises a body 1 and a tail end protective sleeve 2. Specifically, a light-emitting central channel 10 which runs through the body 1 along the axial central line of the body 1 is arranged inside the body 1; the light-emitting end of the light-emitting central channel 10 is used as the tail end, the other end of the light-emitting central channel 10 is used as the front end, the tail end protective sleeve 2 is sleeved outside the tail end of the body 1, and the tail end protective sleeve 2 can be fixed on the body 1 in a welding or threaded connection or embedding mode. As shown in fig. 1, the space sandwiched between the inner peripheral wall of the trailing end sheath 2 and the trailing end outer peripheral wall of the body 1 forms an annular powder feeding compression passage 20 around the axial center line of the body 1, or, as shown in fig. 2, the inner portion of the trailing end sheath 2 is provided with an annular powder feeding compression passage 20 around the axial center line of the body 1. The annular powder feeding compression channel 20 extends to the tail end face of the tail end protective sleeve 2 and is communicated with an external environment to form a powder outlet, and the width of the tail part of the annular powder feeding compression channel 20 gradually narrows along the direction in which the front end of the light-emitting central channel 10 extends to the tail end of the light-emitting central channel 10. And a powder feeding port communicated with the powder feeding compression channel is formed in the peripheral wall of the tail end protective sleeve 2.
In this embodiment, preferably, the entire width of the annular powder feeding compression channel 20 may gradually narrow along the direction in which the front end of the light-emitting central channel 10 extends toward the tail end of the light-emitting central channel 10, so as to achieve the purpose of gradually pressurizing the powder feeding airflow to avoid the occurrence of the hole blockage phenomenon, and in some specific embodiments, only the width of the tail portion of the annular powder feeding compression channel 20 may gradually narrow along the direction in which the front end of the light-emitting central channel 10 extends toward the tail end of the light-emitting central channel 10, so as to achieve the purpose of pressurizing the powder before powder discharging and converging the powder at the outlet at the laser focusing point. In particular, the width of the annular powder feeding compression passage 20 in the present embodiment refers to the radial distance between the inner annular surface and the outer annular surface of the annular powder feeding compression passage 20 on the plane of the radial section of the light exit central channel 10.
In this embodiment, replace a plurality of powder feeders of laser nozzle outer wall installation through setting up tail end protective sheath 2 and annular powder feeding compression passageway 20, laser nozzle's structure has been simplified, and simultaneously, the width of the afterbody of annular powder feeding compression passageway 20 narrows down to the direction of the tail end extension of light-emitting central pore canal 10 along the front end of light-emitting central pore canal 10 gradually, in order to send the powder in-process, the powder is from the powder inlet department on the tail end protective sheath 2 periphery wall entering under the effect of powder feeding air current, send powder compression passageway 20 to pressurize the back from light-emitting central pore canal 10 week side play powder and converge to laser focus point department, can effectively improve the powder utilization ratio.
In conclusion, the present embodiment at least alleviates the technical problems of complex mounting structure and low powder utilization rate of the laser cladding gun in the prior art.
With continued reference to fig. 1 and fig. 2, in an alternative embodiment of this embodiment, preferably, the front end of the light-exiting central hole 10 is a cylindrical hole, and the tail end of the light-exiting central hole 10 is a tapered hole with a diameter gradually decreasing from the front end to the tail end; the outline of tail end protective sheath 2 is the cone form that the direction diameter that extends from the front end of light-emitting central pore canal 10 to the tail end of light-emitting central pore canal 10 reduces gradually, from this, has the weight reduction, reduce the beneficial effect that laser send powder melts that the head and the tail occupy space and be convenient for operate, simultaneously, can correspond and set up the slope of annular send powder compression passageway 20 from the front end of tail end protective sheath 2 to tail end orientation light-emitting central pore canal 10, in order to further be favorable to the powder to assemble in the laser focus point, and then, further improve the powder utilization ratio.
In addition, current laser cladding rifle still has the powder uneven problem of distribution of focus point density, for quick even powder feeding, makes the powder even in focus point density distribution, and in the optional implementation of this embodiment, more preferably, a plurality of powder feeding openings have been seted up on the periphery wall of tail end protective sheath 2, and a plurality of powder feeding openings are along the equidistant evenly distributed of radial circumferencial direction of tail end protective sheath 2.
In order to facilitate the butt joint of the powder feeding, in an optional implementation manner of this embodiment, it is preferable that a powder feeding joint 21 is installed in the powder feeding port to butt joint an external powder feeding device.
In addition, in the laser cladding process, the laser is reflected to the laser gun head, the temperature generated by the reflection can reach several thousands of degrees, and the production efficiency is seriously affected, so that the laser powder feeding cladding head in the prior art is easily burnt out, so that the service life is short, compared with this, in an optional implementation manner of this embodiment, as shown in fig. 1 and fig. 2, along the extending direction of the light-emitting central channel 10, the outside of the middle area of the body 1 is sheathed with the cooling water jacket 3 in a heat contact manner, the inside of the cooling water jacket 3 is provided with the cooling water channel 30, the outer peripheral surface of the cooling water jacket 3 is provided with a water inlet communicated with one end of the cooling water channel 30 and a water outlet communicated with the other end of the cooling water channel 30, the water inlet is connected with a water inlet joint 31, and the water outlet is connected with a water joint 32; in other preferred embodiments of the present embodiment, along the extending direction of the light-emitting central channel 10, a cooling water channel 30 is disposed in the peripheral wall of the central region of the body 1, a water inlet communicated with one end of the cooling water channel 30 and a water outlet communicated with the other end of the cooling water channel 30 are disposed on the peripheral wall of the body 1, the water inlet is connected to a water inlet joint 31, and the water outlet is connected to a water outlet joint 32. In the two embodiments listed above, preferably, the cooling water channel 30 is spirally arranged around the tail of the body 1, and the cooling water channel 30 is arranged to efficiently dissipate heat and forcibly cool the laser powder feeding cladding head, so as to improve the service life of the laser powder feeding cladding head.
In addition, with reference to fig. 1 and fig. 2, in an alternative embodiment of this embodiment, it is preferable that a shielding gas feeding port 11 communicating with the light-emitting central duct 10 is formed on an outer peripheral wall of the front end region of the body 1 along an extending direction of the light-emitting central duct 10, so that argon or other inert gas shielding gas can be fed to the surface of the workpiece to be clad through the shielding gas feeding port 11 to protect the surface of the cladding layer, thereby improving the quality of the cladding layer.
In addition, in an optional implementation manner of this embodiment, it is preferable that the outer circumferential surface of the tail end protection sleeve 2 is coated with a zirconium oxide coating and/or a yttrium oxide coating, where "and/or" means that both the zirconium oxide coating and the yttrium oxide coating are coated on the outer circumferential surface of the tail end protection sleeve 2, or the zirconium oxide coating or the yttrium oxide coating is coated on the outer circumferential surface of the tail end protection sleeve 2, by such a structure, it is possible to effectively resist reflection and high temperature caused by laser cladding, avoid the phenomena of droplet and powder blockage on the surface of the powder feeding head and the powder outlet, and avoid the phenomenon of burning the powder feeding head caused by reflection.
In addition, in an optional embodiment of this embodiment, it is preferable that a high-temperature-resistant and wear-resistant ceramic coating is coated on an outer circumferential wall of the tail portion of the body 1 and an inner circumferential wall of the tail-end protection sleeve 2, so that erosion wear of the laser cladding powder feeding head caused by alloy powder scouring can be effectively prolonged, and the service life of the laser cladding powder feeding head is prolonged.
Example two
The embodiment provides a laser cladding gun, which comprises a laser powder feeding cladding head provided in any optional embodiment of the first embodiment.
Because the laser cladding gun provided by the embodiment includes the laser powder feeding cladding head described in the first embodiment, the laser cladding gun provided by the embodiment can achieve all the beneficial effects that the laser powder feeding cladding head can achieve in the first embodiment, and the specific structure and the achievable effect can be obtained by referring to various optional or preferred embodiments in the first embodiment.
Finally, it should be noted that: the embodiments in the present description are all described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts among the embodiments can be referred to each other; the above embodiments in the present specification are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A laser powder feeding cladding head, which is characterized in that,
the laser powder feeding cladding head comprises a body (1) and a tail end protective sleeve (2);
a light-emitting central channel (10) which penetrates through the body (1) along the axial center line of the body (1) is arranged in the body (1);
the light-emitting end of the light-emitting central pore passage (10) is taken as the tail end, the other end of the light-emitting central pore passage (10) is taken as the front end, and the tail end protective sleeve (2) is sleeved outside the tail end of the body (1);
a space clamped between the inner peripheral wall of the tail end protective sleeve (2) and the tail end outer peripheral wall of the body (1) forms an annular powder feeding compression channel (20) around the axial center line of the body (1), or the tail end protective sleeve (2) is internally provided with an annular powder feeding compression channel (20) around the axial center line of the body (1);
the annular powder feeding compression channel (20) extends to the tail end face of the tail end protective sleeve (2) and is communicated with an external environment to form a powder outlet, and the tail width of the annular powder feeding compression channel (20) is gradually narrowed along the direction that the front end of the light outlet central pore passage (10) extends to the tail end of the light outlet central pore passage (10);
and a powder feeding port communicated with the powder feeding compression channel is formed in the peripheral wall of the tail end protective sleeve (2).
2. The laser powder feeding cladding head of claim 1,
the front end of the light-emitting central pore passage (10) is a cylindrical pore passage, and the tail end of the light-emitting central pore passage (10) is a tapered pore passage with the diameter gradually reduced from the front end to the tail end;
the outer contour of the tail end protective sleeve (2) is in a cone shape with the diameter gradually reduced from the front end of the light-emitting central pore passage (10) to the tail end of the light-emitting central pore passage (10) in the extending direction.
3. The laser powder feeding cladding head of claim 1, wherein a plurality of powder feeding ports are formed in the outer peripheral wall of the tail end protective sleeve (2), and the plurality of powder feeding ports are uniformly distributed at equal intervals along the radial circumferential direction of the tail end protective sleeve (2).
4. The laser powder feeding cladding head of claim 1, wherein a powder feeding joint (21) is installed in the powder feeding port.
5. The laser powder feeding cladding head according to claim 1, wherein a cooling water channel (30) is provided in a peripheral wall of a middle region of the body (1) along an extending direction of the light emitting central hole (10), and a water inlet communicated with one end of the cooling water channel (30) and a water outlet communicated with the other end of the cooling water channel (30) are opened in the peripheral wall of the body (1).
6. The laser powder feeding cladding head according to claim 1, wherein a cooling water jacket (3) is sleeved outside a middle region of the body (1) along an extending direction of the light emitting central hole (10), a cooling water channel (30) is arranged inside the cooling water jacket (3), and a water inlet communicated with one end of the cooling water channel (30) and a water outlet communicated with the other end of the cooling water channel (30) are opened on an outer peripheral surface of the cooling water jacket (3).
7. The laser powder feeding cladding head according to claim 1, wherein a shielding gas feeding port (11) communicated with the light-emitting central duct (10) is formed in an outer peripheral wall of a front end region of the body (1) along an extending direction of the light-emitting central duct (10).
8. The laser powder feeding cladding head according to claim 1, wherein the outer circumferential surface of the trailing protective sheath (2) is coated with a zirconia coating and/or an yttria coating.
9. The laser powder feeding cladding head according to claim 1, characterized in that a high temperature and wear resistant ceramic coating is coated on the outer peripheral wall of the tail of the body (1) and the inner peripheral wall of the tail protective sleeve (2).
10. A laser cladding gun comprising the laser powder feeding cladding head of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246909.1A CN113981439B (en) | 2021-10-26 | 2021-10-26 | Laser powder feeding cladding head and laser cladding gun |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246909.1A CN113981439B (en) | 2021-10-26 | 2021-10-26 | Laser powder feeding cladding head and laser cladding gun |
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| Publication Number | Publication Date |
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| CN113981439A true CN113981439A (en) | 2022-01-28 |
| CN113981439B CN113981439B (en) | 2023-12-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115505921A (en) * | 2022-04-15 | 2022-12-23 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Preparation method of continuous gradient high-wear-resistance metal-based ceramic coating |
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| CN213624385U (en) * | 2020-11-25 | 2021-07-06 | 宁波镭速激光科技有限公司 | High-efficient laser powder feeding head |
| CN213652648U (en) * | 2020-11-25 | 2021-07-09 | 宁波镭速激光科技有限公司 | Handheld laser nozzle |
| CN213652649U (en) * | 2020-11-25 | 2021-07-09 | 宁波镭速激光科技有限公司 | High-speed laser cladding head |
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| CN111549343A (en) * | 2020-06-18 | 2020-08-18 | 河北光束激光科技有限公司 | Water-cooling single-channel center powder feeding cladding head |
| CN213624385U (en) * | 2020-11-25 | 2021-07-06 | 宁波镭速激光科技有限公司 | High-efficient laser powder feeding head |
| CN213652648U (en) * | 2020-11-25 | 2021-07-09 | 宁波镭速激光科技有限公司 | Handheld laser nozzle |
| CN213652649U (en) * | 2020-11-25 | 2021-07-09 | 宁波镭速激光科技有限公司 | High-speed laser cladding head |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115505921A (en) * | 2022-04-15 | 2022-12-23 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Preparation method of continuous gradient high-wear-resistance metal-based ceramic coating |
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| CN113981439B (en) | 2023-12-22 |
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