CN114990543B - Powder magnetic damping speed reducer for laser cladding and manufacturing method - Google Patents
Powder magnetic damping speed reducer for laser cladding and manufacturing method Download PDFInfo
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- CN114990543B CN114990543B CN202210560187.5A CN202210560187A CN114990543B CN 114990543 B CN114990543 B CN 114990543B CN 202210560187 A CN202210560187 A CN 202210560187A CN 114990543 B CN114990543 B CN 114990543B
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- 239000000843 powder Substances 0.000 title claims abstract description 104
- 238000004372 laser cladding Methods 0.000 title claims abstract description 96
- 238000013016 damping Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 title abstract description 9
- 239000000498 cooling water Substances 0.000 claims abstract description 65
- 238000003801 milling Methods 0.000 claims description 11
- 238000004080 punching Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 2
- 238000000151 deposition Methods 0.000 abstract description 4
- 230000008021 deposition Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 18
- 239000004020 conductor Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 230000006698 induction Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The powder magnetic damping speed reducer for laser cladding comprises a laser cladding nozzle, wherein the lower end of the laser cladding nozzle is provided with an envelope matched with the laser cladding nozzle; a plurality of powder paths are arranged around the laser beam channel; the periphery of the laser beam channel is provided with a cooling water flow annular groove; the laser cladding nozzle is also provided with a shielding gas channel and a wire channel; the envelope is sequentially provided with an outer annular groove, an inner annular groove and a circular through hole from outside to inside, a conductive coil is arranged in the inner annular groove, the circular through hole is communicated with the laser beam channel and the powder channel, and laser, shielding gas and powder pass through the circular through hole. The invention also provides a manufacturing method of the powder magnetic damping speed reducer for laser cladding. According to the invention, the powder is influenced by electromagnetic damping through the non-uniform magnetic field generated by the coil, so that the effect of reducing the deposition speed of the laser cladding powder is realized.
Description
Technical Field
The invention relates to the technical field of laser cladding, in particular to a powder magnetic damping speed reducer for laser cladding and a manufacturing method thereof.
Background
The laser cladding is a novel surface modification technology, powder is fed into a laser molten pool while the surface of an alloy is scanned by laser, the metal powder and a part of matrix are fused by utilizing the energy of the laser, and a novel alloy coating is generated on the surface of the matrix, so that the abrasion resistance, corrosion resistance, heat resistance, oxidation resistance and the like of the surface of a base layer can be obviously improved, the purpose of surface modification or repair is achieved, the requirement on the specific performance of the surface of a material is met, and a large number of noble elements are saved.
The powder particles are captured by the melt pool after entering the melt pool during the forming process to achieve the additive. The smaller the powder particle size, the slower the movement speed, the easier it is for the melt pool to catch. However, the powder movement speed is slow, so that the speed of the powder carrying gas is required to be small, but the powder feeding efficiency is affected; if the powder carrying gas is high in speed, the powder with large particles can easily rebound from the molten pool, particularly in a shallow area of the molten pool, the rebound powder can generate a powder sticking phenomenon on the surface of a deposition layer to influence the appearance of a cladding layer, and can splash back to a laser cladding nozzle opening to even cause powder blocking, so that normal work is influenced. Therefore, when the powder comes out from the outlet at a speed of several meters per second, the powder is decelerated by the deceleration device, so that the powder can be better deposited in the molten pool, and the utilization rate of the powder is improved.
The speed reducer uses electromagnetic damping as a principle, and when the closed conductor and the magnetic pole perform the movement of cutting magnetic induction lines, the closed conductor can generate induction current or kinetic current due to the change of magnetic flux penetrated by the closed conductor. The magnetic field generated by this current may impede the relative movement of the two. Electromagnetic damping has found considerable application, such as in electrical measuring instruments, electromagnetic brakes in electric locomotives, and the like. However, at present, electromagnetic damping is not applied to the field of powder feeding of laser cladding.
Disclosure of Invention
In order to overcome the problems, the invention provides a powder magnetic damping speed reducer for laser cladding and a manufacturing method thereof.
The first aspect of the invention provides a powder magnetic damping speed reducer for laser cladding, which comprises a laser cladding nozzle, wherein the upper end of the laser cladding nozzle is connected with a laser head, and the lower end of the laser cladding nozzle is provided with an envelope matched with the laser head;
A laser beam channel which penetrates up and down is arranged in the laser cladding nozzle along the direction of the central axis, a first internal thread is arranged on the inner wall of the upper part of the laser beam channel, and the laser cladding nozzle is in threaded connection with the laser head through the first internal thread; a plurality of powder path channels are arranged around the laser beam channels, and the powder path channels vertically penetrate through the laser cladding nozzle;
the laser cladding nozzle comprises a laser cladding nozzle body, a laser beam channel, a laser beam inlet, a laser beam outlet, a laser beam inlet and a laser beam outlet, wherein the laser cladding nozzle body is arranged on the laser beam channel; milling an annular groove on the inner side of the cooling water flow annular groove, milling a cylindrical surface on the outer side of the cooling water flow annular groove, and arranging external threads on the groove wall and the cylindrical surface on one side of the annular groove, which is close to the cooling water flow annular groove;
The laser cladding nozzle is also provided with a protective gas channel and a wire channel, the protective gas channel is obliquely communicated with the laser beam channel from the upper surface of the laser cladding nozzle, and the wire channel is vertically communicated with the laser cladding nozzle;
An outer annular groove is arranged at the position of the envelope corresponding to the cooling water flow annular groove, and a second internal thread matched with the external thread is arranged on the groove wall of the outer annular groove; the envelope is screwed at the lower end of the laser cladding nozzle through threads, and the outer annular groove and the cooling water flow annular groove form a sealed cooling water space; an inner annular groove is arranged on the envelope and positioned at the inner side of the outer annular groove, a conductive coil is arranged in the inner annular groove, and a wire of the conductive coil passes through a wire channel to be electrically connected with an external power supply; the inner side of the inner side annular groove is provided with a round through hole which is communicated with the laser beam channel and the powder channel.
Further, the number of the powder path channels is four, the upper end of the powder path channel is provided with a powder inlet, the lower end of the powder path channel is provided with a powder outlet, the powder inlet is positioned on the upper surface of the laser cladding nozzle, the powder outlet is positioned on the lower surface of the laser cladding nozzle, and the powder outlet is communicated with the circular through hole of the envelope.
Further, the shielding gas channel is obliquely led to the middle part of the laser beam channel, and the powder channel is obliquely led to the circular through hole.
A second aspect of the present invention provides a method of manufacturing a powder magnetic damping deceleration device for laser cladding, comprising the steps of:
Step 1, forming a laser beam channel in the middle of a laser cladding nozzle; milling an annular groove at the bottom of the laser cladding nozzle to form a cooling water annular groove; milling an annular groove on the inner side of the cooling water annular groove, milling a cylindrical surface on the outer side of the annular groove, and processing external threads on the groove wall and the cylindrical surface on one side of the annular groove, which is close to the cooling water annular groove;
Step 2, vertically downwards punching the top surface of the laser cladding nozzle to form three through holes, wherein the through holes comprise a cooling water inlet, a cooling water outlet and a wire channel; the cooling water inlet and the cooling water outlet are communicated with the cooling water annular groove, and the wire channel penetrates through the bottom surface of the laser cladding nozzle;
step 3, punching inclined holes on the top surface of the laser cladding nozzle, wherein the inclined holes comprise powder passages and shielding gas passages; the powder path channel obliquely penetrates to the bottom surface of the laser cladding nozzle, and the shielding gas channel obliquely penetrates to the middle part of the laser beam channel;
Step 4, forming a circular through hole in the middle of the envelope, wherein the circular through hole is communicated with the laser beam channel and the powder channel; an outer annular groove is formed in the jacket at a position corresponding to the cooling water annular groove, an internal thread is formed in the outer annular groove, an inner annular groove is formed in the jacket and located on the inner side of the outer annular groove, and the inner annular groove is communicated with the wire guide channel.
The working principle of the invention is as follows: because the conductive coil is arranged in the envelope below the laser cladding nozzle, after the conductive coil is electrified, the conductive coil can generate a magnetic field with certain intensity, the magnetic field in the coil plane is strongest, and the farther the two sides are away from the plane, the lower the intensity is, so that the magnetic field intensity gradient is formed. The powder moves from top to bottom through the magnetic field and the magnetic flux changes. When powder particles are subjected to the action of powder-carrying gas and come out of a powder channel of a laser cladding nozzle at the speed of a meter per second and then are influenced by a magnetic field, as the powder particles are conductors, a plurality of closed conductor loops can be formed at will, therefore, when the powder particles move in the magnetic field, all the small conductor loops do cutting magnetic field line movement, a plurality of closed induction currents, also called eddy currents, are formed in the loops through the change of the magnetic flux of the powder, and when the induction currents are subjected to the action of the magnetic field, namely, the influence of electromagnetic damping, the conductors are subjected to ampere force which always prevents the movement of the powder particles in the magnetic field, so that the movement speed of the powder is reduced.
The beneficial effects of the invention are as follows: the powder passes through the non-uniform magnetic field generated by the coil, so that the powder is influenced by electromagnetic damping, and the effect of reducing the deposition speed of the laser cladding powder is realized. The powder can be better deposited in the melt pool and the powder utilization is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of a shielding gas passage according to the present invention;
Fig. 4 is a schematic view of the structure of the envelope;
fig. 5 is a schematic of the magnetic field of a powder passing through a conductive coil.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, as the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience in describing the present invention and simplifying the description based on the azimuth or positional relationship shown in the drawings, it should not be construed as limiting the present invention, but rather should indicate or imply that the devices or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to the drawings, a first embodiment of the invention provides a powder magnetic damping speed reducer for laser cladding, which comprises a laser cladding nozzle 1, wherein the upper end of the laser cladding nozzle 1 is connected with a laser head, and the lower end of the laser cladding nozzle 1 is provided with an envelope 5 matched with the laser cladding nozzle;
a laser beam channel 7 which penetrates up and down is arranged in the laser cladding nozzle 1 along the central direction of the laser cladding nozzle, a first internal thread is arranged on the inner wall of the upper part of the laser beam channel 7, and the laser cladding nozzle 1 is in threaded connection with a laser head through the first internal thread; four powder paths 2 are arranged around the laser beam path 7, the upper end of the powder path 2 is provided with a powder inlet, the lower end of the powder path 2 is provided with a powder outlet, the powder inlet is positioned on the upper surface of the laser cladding nozzle 1, the powder outlet is positioned on the lower surface of the laser cladding nozzle 1, and the powder outlet is communicated with the circular through hole 15 of the envelope 5.
The lower surface of the laser cladding nozzle 1 and positioned at the periphery of the laser beam channel 7 are provided with a cooling water flow annular groove 3, the upper surface of the laser cladding nozzle 1 is provided with a cooling water inlet 91 and a cooling water outlet 92, the cooling water flow annular groove 3 is respectively communicated with the cooling water inlet 91 and the cooling water outlet 92, and the cooling water inlet 91, the cooling water flow annular groove 3, the cooling water outlet 92 and an external water source form a water flow loop; an annular groove 12 is milled on the inner side of the cooling water flow annular groove 3, a cylindrical surface 11 is milled on the outer side of the cooling water flow annular groove 3, and external threads are arranged on the groove wall of one side of the annular groove 12, which is close to the cooling water flow annular groove 3, and the cylindrical surface 11;
The laser cladding nozzle 1 is also provided with a shielding gas channel 8 and a wire channel 10, the shielding gas channel 8 is obliquely penetrated from the upper surface of the laser cladding nozzle 1 to the middle part of the laser beam channel 7, and the wire channel 10 is penetrated up and down through the laser cladding nozzle 1;
An outer annular groove 13 is arranged at the position of the envelope 5 corresponding to the cooling water flow annular groove 3, and a second internal thread matched with the external thread is arranged on the groove wall of the outer annular groove 13; the envelope 5 is screwed at the lower end of the laser cladding nozzle 1 through threads, and the outer annular groove 13 and the cooling water flow annular groove 3 form a sealed cooling water space; an inner annular groove 14 is arranged on the envelope 5 and positioned at the inner side of the outer annular groove 13, a conductive coil 4 is arranged in the inner annular groove 14, and a wire 6 of the conductive coil 4 passes through the wire channel 10 to be electrically connected with an external power supply; the inner side of the inner side annular groove 14 is provided with a circular through hole 15 which is vertically communicated, the circular through hole 15 is communicated with the laser beam channel 7 and the powder channel 2, and the powder channel 2 is obliquely led to the circular through hole 15. The laser, shielding gas and powder pass through the circular through holes 15.
When the laser cladding system is ready to work, the upper end part of the laser beam channel 7 of the laser cladding nozzle 1 is connected with the laser head in a threaded manner, and the laser beam passes through the laser beam channel 7 to reach the surface of a workpiece, so as to heat powder and melt a substrate. The shielding gas needs inert gas such as argon or nitrogen and the like to be introduced into the shielding gas channel 8 from the high-pressure gas cylinder through a conduit; introducing water into the cooling water inlet 91 through a water cooler; the conducting wire 6 is connected with an external power supply to enable the conducting coil 4 to be electrified, and a magnetic field with certain intensity can be generated after the conducting coil 4 is electrified. After the laser cladding system starts to work normally, powder particles come out of the powder channel 2 of the laser cladding nozzle 1 at the speed of each second and are influenced by a magnetic field under the action of powder carrying gas, and as the powder particles are conductors, a plurality of closed conductor loops can be formed randomly, so that when the powder particles move in the magnetic field, all the small conductor loops do cutting magnetic field line movement, a plurality of closed induction currents are formed in the loops through the change of the magnetic flux of the powder, and when the induction currents are influenced by the magnetic field, namely under the influence of electromagnetic damping, the conductors are subjected to ampere force which always blocks the movement of the powder particles in the magnetic field, thereby reducing the movement speed of the powder and realizing the effect of decelerating and depositing the laser cladding powder on a substrate.
The second embodiment of the present invention provides a method for manufacturing a powder magnetic damping deceleration device for laser cladding, comprising the steps of:
Step 1, forming a laser beam channel 7 in the middle of a laser cladding nozzle 1; milling an annular groove at the bottom of the laser cladding nozzle 1 to form a cooling water annular groove 3; milling an annular groove 12 on the inner side of the cooling water annular groove 3, milling a cylindrical surface 11 on the outer side of the annular groove 12, and machining external threads on the groove wall of one side of the annular groove 12, which is close to the cooling water annular groove 3, and the cylindrical surface 11;
step 2, vertically downwards punching the top surface of the laser cladding nozzle 1 to form three through holes, wherein the through holes comprise a cooling water inlet 91, a cooling water outlet 92 and a wire channel 10; the cooling water inlet 91 and the cooling water outlet 92 are communicated with the cooling water annular groove 3, and the wire channel 10 penetrates through the bottom surface of the laser cladding nozzle 1;
Step 3, punching inclined holes on the top surface of the laser cladding nozzle 1, wherein the inclined holes comprise a powder path channel 2 and a shielding gas channel 8; the powder channel 2 obliquely penetrates to the bottom surface of the laser cladding nozzle 1, and the shielding gas channel 8 obliquely penetrates to the middle part of the laser beam channel 7;
step 4, forming a circular through hole 15 in the middle of the envelope 5, wherein the circular through hole 15 is communicated with the laser beam channel 7 and the powder channel 2; an outer annular groove 13 is formed in the jacket 5 at a position corresponding to the cooling water annular groove 3, an internal thread is formed in the outer annular groove 13, an inner annular groove 14 is formed in the jacket 5 at an inner side of the outer annular groove 13, and the inner annular groove 14 communicates with the wire passage 10.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, and the scope of protection of the present invention and equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims (4)
1. The utility model provides a powder magnetic damping decelerator for laser cladding, includes laser cladding nozzle (1), and the upper end and the laser head of laser cladding nozzle (1) link to each other, its characterized in that: the lower end of the laser cladding nozzle (1) is provided with an envelope (5) matched with the laser cladding nozzle;
A laser beam channel (7) which is vertically penetrated is arranged in the laser cladding nozzle (1) along the central direction of the laser cladding nozzle, a first internal thread is arranged on the inner wall of the upper part of the laser beam channel (7), and the laser cladding nozzle (1) is in threaded connection with the laser head through the first internal thread; a plurality of powder path channels (2) are arranged around the laser beam channels (7), and the powder path channels (2) vertically penetrate through the laser cladding nozzle (1);
The laser cladding nozzle (1) is characterized in that a cooling water flow annular groove (3) is formed in the lower surface of the laser cladding nozzle (1) and located at the periphery of the laser beam channel (7), a cooling water inlet (91) and a cooling water outlet (92) are formed in the upper surface of the laser cladding nozzle (1), the cooling water flow annular groove (3) is respectively communicated with the cooling water inlet (91) and the cooling water outlet (92), and a water flow loop is formed by the cooling water inlet (91), the cooling water flow annular groove (3), the cooling water outlet (92) and an external water source; an annular groove (12) is milled on the inner side of the cooling water flow annular groove (3), a cylindrical surface (11) is milled on the outer side of the cooling water flow annular groove (3), and external threads are arranged on the groove wall of one side of the annular groove (12) close to the cooling water flow annular groove (3) and the cylindrical surface (11);
The laser cladding nozzle (1) is also provided with a protective gas channel (8) and a wire channel (10), the protective gas channel (8) obliquely penetrates through the laser beam channel (7) from the upper surface of the laser cladding nozzle (1), and the wire channel (10) vertically penetrates through the laser cladding nozzle (1);
An outer annular groove (13) is arranged at a position of the sleeve (5) corresponding to the cooling water flow annular groove (3), and a second internal thread matched with the external thread is arranged on the groove wall of the outer annular groove (13); the envelope (5) is screwed at the lower end of the laser cladding nozzle (1) through threads, and the outer annular groove (13) and the cooling water flow annular groove (3) form a sealed cooling water space; an inner annular groove (14) is arranged on the envelope (5) and positioned at the inner side of the outer annular groove (13), a conductive coil (4) is arranged in the inner annular groove (14), and a wire (6) of the conductive coil (4) passes through the wire channel (10) to be electrically connected with an external power supply; the inner side of the inner side annular groove (14) is provided with a round through hole (15) which is vertically communicated, and the round through hole (15) is communicated with the laser beam channel (7) and the powder channel (2).
2. A powder magnetic damping deceleration device for laser cladding as defined in claim 1, wherein: the number of the powder path channels (2) is four, the upper ends of the powder path channels (2) are provided with powder inlets, the lower ends of the powder path channels are provided with powder outlets, the powder inlets are positioned on the upper surface of the laser cladding nozzle (1), the powder outlets are positioned on the lower surface of the laser cladding nozzle (1), and the powder outlets are communicated with the circular through holes (15) of the envelope (5).
3. A powder magnetic damping deceleration device for laser cladding as claimed in claim 2, wherein: the shielding gas channel (8) is obliquely led to the middle part of the laser beam channel (7), and the powder channel (2) is obliquely led to the circular through hole (15).
4. A method of manufacturing a powder magnetic damping deceleration device for laser cladding according to claim 3, comprising the steps of:
Step 1, forming a laser beam channel (7) in the middle of a laser cladding nozzle (1); milling an annular groove at the bottom of the laser cladding nozzle (1) to form a cooling water flow annular groove (3); milling an annular groove (12) on the inner side of the cooling water flow annular groove (3), milling a cylindrical surface (11) on the outer side of the annular groove (12), and machining external threads on the groove wall and the cylindrical surface (11) on one side, which is close to the cooling water flow annular groove (3), in the annular groove (12);
step 2, vertically downwards punching the top surface of the laser cladding nozzle (1) to form three through holes, wherein the through holes comprise a cooling water inlet (91), a cooling water outlet (92) and a wire guide channel (10); the cooling water inlet (91) and the cooling water outlet (92) are communicated with the cooling water flow annular groove (3), and the wire channel (10) penetrates through the bottom surface of the laser cladding nozzle (1);
Step3, punching inclined holes on the top surface of the laser cladding nozzle (1), wherein the inclined holes comprise a powder path channel (2) and a protective gas channel (8); the powder channel (2) obliquely penetrates to the bottom surface of the laser cladding nozzle (1), and the shielding gas channel (8) obliquely penetrates to the middle part of the laser beam channel (7);
Step 4, forming a circular through hole (15) in the middle of the envelope (5), wherein the circular through hole (15) is communicated with the laser beam channel (7) and the powder channel (2); an outer annular groove (13) is formed in the jacket (5) at a position corresponding to the cooling water flow annular groove (3), an internal thread is formed in the outer annular groove (13), an inner annular groove (14) is formed in the jacket (5) and located on the inner side of the outer annular groove (13), and the inner annular groove (14) is communicated with the wire guide passage (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560187.5A CN114990543B (en) | 2022-05-23 | 2022-05-23 | Powder magnetic damping speed reducer for laser cladding and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210560187.5A CN114990543B (en) | 2022-05-23 | 2022-05-23 | Powder magnetic damping speed reducer for laser cladding and manufacturing method |
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| CN114990543A CN114990543A (en) | 2022-09-02 |
| CN114990543B true CN114990543B (en) | 2024-05-03 |
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| CN112080743A (en) * | 2020-09-25 | 2020-12-15 | 陕西天元智能再制造股份有限公司 | Electromagnetic induction annular heating laser cladding nozzle device and laser cladding device |
| CN112430813A (en) * | 2020-12-11 | 2021-03-02 | 泰尔(安徽)工业科技服务有限公司 | Split type laser cladding powder feeding nozzle and method for carrying out laser cladding by using same |
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