CN108396282B - Adjustable multi-way powder feeding frame for plasma spraying and spraying equipment - Google Patents
Adjustable multi-way powder feeding frame for plasma spraying and spraying equipment Download PDFInfo
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- CN108396282B CN108396282B CN201810549807.9A CN201810549807A CN108396282B CN 108396282 B CN108396282 B CN 108396282B CN 201810549807 A CN201810549807 A CN 201810549807A CN 108396282 B CN108396282 B CN 108396282B
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- frame
- spray gun
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- 239000000843 powder Substances 0.000 title claims abstract description 99
- 238000007750 plasma spraying Methods 0.000 title claims abstract description 16
- 238000005507 spraying Methods 0.000 title abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 abstract description 18
- 239000011248 coating agent Substances 0.000 abstract description 17
- 239000000919 ceramic Substances 0.000 abstract description 10
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 11
- 239000007769 metal material Substances 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Plasma Technology (AREA)
- Nozzles (AREA)
Abstract
The invention discloses an adjustable multi-path powder feeding frame for plasma spraying and spraying equipment, which solves the problem that the position of the powder feeding frame cannot be adjusted, realizes the axial and radial movement of a plurality of powder feeding pipes along a plasma spray gun through the adjustable movement of an adjusting rod and the powder feeding pipes, further reduces the difference of ceramic/metal melting states and improves the comprehensive performance of a functionally gradient coating, and the technical scheme is as follows: the spray gun comprises a main frame connected with a spray gun, wherein the main frame is connected with a plurality of regulating rods which are vertically arranged and can move up and down, and the height positions of the regulating rods are different; the lower part of the adjusting rod is connected with a powder feeding pipe which is transversely arranged and can move left and right.
Description
Technical Field
The invention relates to the technical field of plasma spraying, in particular to an adjustable multi-path powder feeding frame for plasma spraying and spraying equipment.
Background
The plasma spraying technology adopts a plasma arc driven by direct current as a heat source, heats materials such as ceramics, alloys, metals and the like to a molten or semi-molten state, and sprays the materials at a high speed to the surface of a pretreated workpiece to form a surface coating with firm adhesion.
The functional gradient coating is a novel composite coating which is formed by compounding two or more materials and has continuously graded components and structures, and can be divided into a metal/nonmetal functional gradient coating, a metal/ceramic functional gradient coating, a nonmetal/ceramic functional gradient coating and the like according to the material composition. Due to the continuous gradient change of the material, the material has unique advantages in the aspects of relieving the difference of thermal expansion coefficient and thermal stress, improving the wear resistance, corrosion resistance, oxidation resistance and the like of the material. The ceramic material has higher hardness and excellent heat insulation effect, and is widely used in the fields of metallurgy, aerospace and the like, but compared with metalMaterials, ceramic materials having a relatively high melting point, e.g. TiB 2 2980 ℃, 2870 ℃ for WC, 1453 ℃ for Ni, 1495 ℃ for Co, etc. If the material components such as the functional gradient coating are prepared to form a multi-material coating structure with gradient change, under the same technological parameters of the same equipment, the traditional fixed powder feeding frame is difficult to simultaneously meet the requirement of ceramic/metal materials on the difference of external heat/force fields.
Under the same power, the metal material has higher melting degree, the ceramic material has lower melting degree, and the melting states of the metal material and the ceramic material are greatly different. At present, the double-path powder feeding frame is fixed, the heat and force fields experienced by ceramic/metal materials for preparing the functionally gradient coating are the same, and if the preparation process of the ceramic materials is met, the metal materials are high in melting/gasification degree, so that the preparation of the coating is not facilitated. On the other hand, the plasma flame flow has very high temperature and energy density, and the temperature of the plasma flame flow is obviously attenuated along with the increase of the flame flow distance, such as: the plasma flame flow center temperature of the related equipment can reach 31700 ℃, and the flame flow at the position 50mm away from the spray gun opening has the temperature of only about 1100 ℃. Therefore, by adjusting the position of the ceramic/metal material powder feeding pipe in the plasma arc flame flow, the difference of the melting states of the ceramic/metal materials is reduced, and the method is theoretically feasible.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an adjustable multi-path powder feeding frame for plasma spraying, which realizes the axial and radial movement of a plurality of powder feeding pipes along a plasma spray gun through the adjustable movement of an adjusting rod and the powder feeding pipes, thereby reducing the difference of ceramic/metal melting states and improving the comprehensive performance of a functionally gradient coating;
the invention adopts the following technical scheme:
an adjustable multi-way powder feeding frame for plasma spraying comprises a main frame connected with a spray gun, wherein the main frame is connected with a plurality of vertically arranged adjusting rods capable of moving up and down, and the height positions of the adjusting rods are different; the lower part of the adjusting rod is transversely provided with a powder feeding pipe which can move left and right.
Further, the center of the main frame is provided with a vertical through hole for the spray gun to pass through, and the side part of the main frame is provided with a fastening connecting piece in a matching way.
Further, a plurality of adjusting rods are arranged along the periphery of the main frame.
Furthermore, the side part of the main frame is provided with a plurality of connecting parts, the connecting parts are provided with vertical through holes for the adjusting rods to pass through, and the adjusting rods can move up and down in the vertical through holes.
Further, the side part of the connecting part is provided with a fastening connecting piece in a matching way so as to fasten and connect the adjusting rod and the connecting part.
Further, the main frame and the connecting part are of an integrated structure.
Further, the lower part of the adjusting rod is provided with a transverse through hole for the powder feeding pipe to pass through, and the powder feeding pipe can move left and right in the transverse through hole.
Furthermore, the bottom of the adjusting rod is provided with a fastening connecting piece in a matching way so as to fasten and connect the powder feeding pipe with the adjusting rod.
In order to overcome the defects in the prior art, the invention provides plasma spraying equipment which comprises a spray gun and the powder feeding frame, wherein the spray gun is connected with a main frame of the powder feeding frame.
Compared with the prior art, the invention has the beneficial effects that:
on the basis of the defects of the existing powder feeder, an adjustable multi-path external powder feeding frame for plasma spraying is designed, compared with the traditional fixed two-path powder feeding frame, the invention solves the defect that the traditional powder feeding frame cannot move, can be provided with a plurality of powder feeding pipes, and can realize the preparation of functional gradient coatings of various spraying materials; the powder feeding frame is convenient to detach and maintain by adopting a connecting mode of the set screw.
The powder feeding frame can realize the adjustment of the axial/radial position of the powder feeding pipe along the plasma spray gun by adjusting the adjusting rod and the powder feeding pipe, and has simple structure and easy adjustment. The powder feeding frame can meet the requirements of ceramic/metal materials on different heat/force fields in the preparation process of tangential functional gradient coating preparation of multiple material components, improves the relevant performance of the coating, has good practical effect and has good reference significance for the preparation of the functional gradient coating at present.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic view of the whole assembly of a powder feeding frame of the present invention;
FIG. 2 is a schematic view of a main frame;
FIG. 3 is a schematic view of an adjustment lever;
in the figure, 1 body frame, 2 holding screw, 3 holding screw, 4 send powder pipe, 5 regulation pole, 6 holding screw, 7 connecting portion, 8 vertical through-holes.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As introduced by the background art, the defect that the position of the powder feeding frame cannot be adjusted exists in the prior art, and in order to solve the technical problem, the application provides an adjustable multi-path powder feeding frame for plasma spraying and spraying equipment.
In a typical embodiment of the present application, as shown in fig. 1-3, an adjustable multi-path powder feeding frame for plasma spraying is provided, including a main frame 1 connected with a spray gun, the main frame 1 is connected with a plurality of vertically arranged adjusting rods 5 capable of moving up and down, and the height positions of the plurality of adjusting rods 5 are different; the lower part of the adjusting rod 5 is connected with a powder feeding pipe 4 which is transversely arranged and can move left and right.
The axial direction (namely the vertical direction) realizes axial movement by adjusting the position of the adjusting rod; the radial direction (namely the horizontal direction) realizes the radial movement of the powder feeding pipe by adjusting the position of the powder feeding pipe, and the position of the powder feeding pipe is fixed by a set screw. The position of the powder feeding pipe in the flame flow can be changed by adjusting the adjusting rod, and the position of the powder feeding pipe and the center of the flame flow can be changed by adjusting the powder feeding pipe, so that the axial/radial position of the powder feeding pipe is controlled.
The center of the main frame 1 is provided with a vertical through hole for the spray gun to pass through, and the side part of the main frame 1 is provided with a fastening connecting piece (namely a set screw 2) in a matched mode so as to fasten the main frame and the spray gun, so that the multipath powder feeding frame is convenient to detach.
The main frame 1 can be made of tungsten-copper alloy material, so that heat dissipation is facilitated.
A plurality of adjustment bars 5 are provided along the periphery of the main frame 1.
The side part of the main frame 1 is provided with a plurality of connecting parts 7, the connecting parts 7 are provided with vertical through holes 8 for the adjusting rods 5 to pass through, and the adjusting rods 5 can move up and down in the vertical through holes 8. In this embodiment, two paths of powder feeding frames are arranged, two connecting portions 7 are symmetrically arranged on two sides of the main frame 1, two adjusting rods 5 are correspondingly arranged and are respectively arranged in vertical through holes of the connecting portions, and the powder feeding positions of two paths of powder feeding can be adjusted.
The side of the connecting part 7 is provided with fastening connectors (i.e. set screws 6) in a matched manner to fasten the adjusting rod 5 and the connecting part 7. The adjusting rod 5 is arranged on the main frame 1 through two set screws 6 and fixes the axial position of the powder feeding pipe 4.
The main frame 1 and the connecting part 7 are of an integral structure.
The lower part of the adjusting rod 5 is provided with a transverse through hole for the powder feeding pipe 4 to pass through, and the powder feeding pipe 4 can move left and right in the transverse through hole.
The bottom of the adjusting rod 5 is provided with a fastening connecting piece (i.e. a set screw 3) in a matching way so as to fasten and connect the powder feeding pipe 4 and the adjusting rod 5. The powder feeding pipe 4 is matched and fixed with the adjusting rod 5 through the set screw 3.
In another exemplary embodiment of the present application, a plasma spraying apparatus is provided, which includes a spray gun and the powder feeding frame described above, and the spray gun is connected to the main frame 1 of the powder feeding frame.
In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The powder feeding frame takes a two-way powder feeding structure and takes an XM-80JZ plasma machine gun produced by a certain company as an example to develop related description.
Because tungsten-copper alloy has good thermal conductivity, good high-temperature strength and certain plasticity, WD10050 copper alloy is selected as the main frame 1. The rest part is made of 45# steel, so that the requirements on the related performance can be met, and the cost of the powder feeding frame can be reduced.
In order to ensure the connection function and the double-way powder feeding requirement, two vertical through holes 8 with the distribution diameter of 8mm and threaded holes connected with the vertical through holes and the main frame are formed in the connection part of the main frame 1. The vertical through hole 8 is used for installing the regulation pole 5, and the screw hole is used for installing set screw 6 to make regulation pole 5 be connected with body frame 1, and body frame 1 lateral part sets up the screw hole and is used for installing set screw 2 to make body frame 1 be connected with the spray gun. The two-way powder feeding frame is connected to the existing spray gun by the set screw 2, so that the powder feeding frame is convenient to disassemble, and meanwhile, the equipment transformation cost is reduced.
The lower part of the adjusting rod 5 is provided with a through hole and a threaded hole which are vertically distributed. The through hole is used for installing the powder feeding pipe 4, and the threaded hole is used for installing the set screw 3 to fix the powder feeding pipe 4 with the adjusting rod 5.
The position of the adjusting rod 5 is adjusted to change the axial position of the powder transmitting tube 4 along the spray gun and is fixed by a set screw 6; by adjusting the position of the powder feeding tube 4 to change its radial position along the lance and fixing it with the set screw 3, axial/radial movement of the powder feeding tube 4 is achieved in the manner described above.
TiB is sprayed by a double-way powder feeding frame 2 The use of the powder feeder is illustrated by way of example with a Ni coating.
Firstly, a powder feeding frame is arranged on a plasma machine gun, the position of the powder feeding frame is adjusted, the bottom of the powder feeding frame and a spray gun opening are positioned on the same horizontal plane, the horizontal plane is determined by a level bar, and the powder feeding frame is fixed on the spray gun by set screws 2 which are distributed in a rotationally symmetrical mode. MountingTiB 2 Powder feeding pipe, ni powder feeding pipe, tiB 2 The powder feeding pipe is arranged on the right side of the powder feeding frame, the Ni powder feeding pipe is arranged on the left side, one side, close to the flame flow, of the powder feeding pipe is kept horizontal to the side face of the adjusting rod, and at the moment, the radial distance from the powder feeding pipe to the center of the flame flow is Xmm. The positions of the two adjusting rods are adjusted to be clung to the bottom of the powder feeding frame, and at the moment, the axial distance between the central axis of the powder feeding pipe and the nozzle is Ymm.
Subsequently, tiB is respectively regulated 2 Ni powder feeding rod position Y 1 、Y 2 The set screw 6 is rotated to fix the adjusting rod, and the distance between the two powder feeding pipes and the nozzle, namely the axial coordinate is Y 1 +Y、Y 2 + Ymm. Opening the plasma spraying equipment, and adjusting the distance between the two powder feeding pipes according to the spraying technological parameters, namely the main/auxiliary gas flow, so as to enable TiB 2 Evenly delivering the powder and Ni powder into flame flow, rotating a set screw 3, and fixing a powder delivery pipe; and utilize slide caliper to measure two powder feeding tube extension distance X 1 、X 2 At this time, tiB 2 Is X in the radial coordinate 1 Radial coordinate of + X, ni is X 2 +X。
Finally, a five-axis robot is used for driving a spray gun to spray the sample, and the relevant performance of the TiB2-Ni coating is tested. By adjusting different Y' s 1 And Y is equal to 2 Acquisition of TiB 2 The optimal technological parameters of Ni, finally completing the spraying work.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (6)
1. An adjustable multi-way powder feeding frame for plasma spraying is characterized by comprising a main frame connected with a spray gun, wherein the main frame is connected with a plurality of vertically arranged adjusting rods capable of moving up and down, and the height positions of the plurality of adjusting rods are different; the lower part of the adjusting rod is connected with a powder feeding pipe which is transversely arranged and can move left and right;
the side part of the main frame is provided with a plurality of connecting parts; the connecting part is provided with a vertical through hole for the adjusting rod to pass through, and the adjusting rod can move up and down in the vertical through hole;
the lower part of the adjusting rod is provided with a transverse through hole for the powder feeding pipe to pass through, and the powder feeding pipe can move left and right in the transverse through hole;
the center of the main frame is provided with a vertical through hole for the spray gun to pass through, and the side part of the main frame is provided with a fastening connecting piece in a matching way.
2. The multiple feed out powder holder of claim 1, wherein a plurality of said adjustment bars are disposed along the periphery of the main frame.
3. The multi-path powder feeding frame according to claim 1, wherein the side parts of the connecting parts are provided with fastening connectors in a matched manner to fasten the adjusting rod and the connecting parts.
4. The multi-way powder feeding frame according to claim 1, wherein the main frame and the connecting part are of an integral structure.
5. The multi-channel powder feeding frame as set forth in claim 1, wherein the bottom of the adjusting rod is provided with a fastening connector for fastening the powder feeding tube to the adjusting rod.
6. A plasma spraying device, characterized by comprising a spray gun and a multi-path powder feeding frame according to any one of claims 1-5, wherein the spray gun is connected with a main frame of the powder feeding frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549807.9A CN108396282B (en) | 2018-05-31 | 2018-05-31 | Adjustable multi-way powder feeding frame for plasma spraying and spraying equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549807.9A CN108396282B (en) | 2018-05-31 | 2018-05-31 | Adjustable multi-way powder feeding frame for plasma spraying and spraying equipment |
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| Publication Number | Publication Date |
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| CN108396282A CN108396282A (en) | 2018-08-14 |
| CN108396282B true CN108396282B (en) | 2024-01-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113915643A (en) * | 2021-11-05 | 2022-01-11 | 西安鑫垚陶瓷复合材料有限公司 | Ceramic matrix composite flame tube and preparation process and tool for inner wall environment barrier coating of ceramic matrix composite flame tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204644473U (en) * | 2015-04-17 | 2015-09-16 | 山东能源重装集团大族再制造有限公司 | A kind of stationary installation of supply gas mouth or powder-feeding head for laser melting coating |
| CN106148947A (en) * | 2016-07-11 | 2016-11-23 | 浙江工业大学 | A kind of rectangular light spot laser cladding coating wall scroll width adjusting mechanism |
| CN106637195A (en) * | 2016-12-15 | 2017-05-10 | 中国矿业大学 | Coaxial powder feeding sprayer capable of automatically adjusting light spots and powder feeding positions |
| CN208201085U (en) * | 2018-05-31 | 2018-12-07 | 山东大学 | The outer powder feeding frame of one kind adjustable multichannel used for plasma spraying and spraying equipment |
-
2018
- 2018-05-31 CN CN201810549807.9A patent/CN108396282B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204644473U (en) * | 2015-04-17 | 2015-09-16 | 山东能源重装集团大族再制造有限公司 | A kind of stationary installation of supply gas mouth or powder-feeding head for laser melting coating |
| CN106148947A (en) * | 2016-07-11 | 2016-11-23 | 浙江工业大学 | A kind of rectangular light spot laser cladding coating wall scroll width adjusting mechanism |
| CN106637195A (en) * | 2016-12-15 | 2017-05-10 | 中国矿业大学 | Coaxial powder feeding sprayer capable of automatically adjusting light spots and powder feeding positions |
| CN208201085U (en) * | 2018-05-31 | 2018-12-07 | 山东大学 | The outer powder feeding frame of one kind adjustable multichannel used for plasma spraying and spraying equipment |
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