High-temperature alloy wire surface coating spraying device

Abstract

The invention discloses a high-temperature alloy wire surface coating spraying device which is characterized in that the high-temperature alloy wire surface coating spraying device comprises an alloy wire, a spraying mechanism and a storage mechanism, the spraying mechanism comprises a support and a supporting barrel detachably installed above the support, a heating pipe is fixedly installed at the top of the supporting barrel, and a plurality of electric arc spraying guns are arranged at the bottom of the heating pipe at equal intervals; a conveying pipe and an air inlet pipe are arranged on the electric arc spraying gun, a control panel is arranged on the outer wall of the supporting barrel, a pressing wheel is arranged at the top of the supporting barrel, and a roller is fixedly installed below the support. The storage mechanism comprises a supporting seat, a servo motor is arranged at one end of the supporting seat, a storage wheel is detachably installed at the output end of the servo motor, the alloy wire penetrates through the heating pipe and the support, and the alloy wire bypasses the roller to enable one end of the alloy wire to be fixedly installed on the storage wheel; according to the method, the combination tightness of molten drops and alloy wires can be improved, formation of coating holes is reduced, meanwhile, the alloy wires can be evenly sprayed, and the thickness of a plating layer is even.

Description

Technical Field

[0001] The invention relates to the technical field of spray wire processing, and in particular to a high-temperature alloy wire surface coating spraying device. Background Art

[0002] Based on the National Key R&D Program Funded Project, Project No.: 2022YFF0503800; Research on key scientific issues in the solar polar region and close-in detection; High-temperature alloy wire is widely used in its field. The alloy wire coating can form a dense protective film on the surface of the alloy wire, separating the outside world from the alloy wire, preventing the oxidation, corrosion, and wear of the alloy wire. The alloy wire coating methods are mainly divided into electroplating, chemical plating, thermal spraying, physical vapor deposition, chemical vapor deposition, etc. Among them, thermal spraying can adjust the coating thickness within a large range and has high production efficiency. Thermal spraying can be divided into flame spraying, arc spraying, plasma spraying, supersonic flame spraying and other methods. Arc spraying is widely used in the preparation of anti-corrosion and wear-resistant coatings on the surface of high-temperature alloy wires in the steel, electric power, chemical and other industries. However, after spraying on the alloy wire surface, the alloy wire surface will appear insufficient spraying and the spray coating will fall off.

[0003] Prior art, such as the Chinese invention patent with announcement number CN216377368A, discloses "an arc spraying device for zinc-copper-titanium alloy wire", which filters its powder through a set filter screen, and assists in heat dissipation of the heat and irritating gas inside the fixed box through the liquid inside the liquid storage tank, and at the same time performs secondary filtration on the gas to prevent the gas from being directly discharged into the air and affecting the surrounding working environment. The heat-dissipating filtered gas is sprayed on the surface of the workpiece through the air outlet pipe and the air outlet, which is convenient for assisting the cooling of the coating on the surface of the workpiece, and there is no need to wait for the coating to cool naturally and form, thereby improving the quality of the workpiece. The efficiency of spraying is improved, but the structure has defects. That is, when the alloy wire is sprayed, the surface temperature of the alloy wire is different from the temperature of the coating, the thermal expansion coefficients are different, and the shrinkage of the particles inside the coating is uneven, which will produce internal stress. When the internal stress is too large, it will cause defects such as cracks and peeling in the coating. In addition, during the alloy wire spraying process, due to the extremely fast solidification speed of the molten droplet, the particles are not tightly combined, and pores are easily formed. The presence of pores will reduce the density of the coating, so that the corrosion resistance, wear resistance and other properties of the coating are affected, and it may also cause medium penetration, thereby affecting the performance of the matrix material. Summary of the invention

[0004] The purpose of the present invention is to provide a method that can improve the tightness of the combination of molten droplets and alloy wires, reduce the formation of coating pores, and can also evenly spray the alloy wires to make the coating thickness uniform, and also recover the sprayed coating powder.

[0005] In order to achieve the above technical effects, the present invention is realized through the following technical solutions: a high-temperature alloy wire surface coating spraying device, characterized in that it includes an alloy wire, a spraying mechanism and a storage mechanism, the spraying mechanism includes a bracket, a support cylinder detachably installed above the bracket, a heating tube is fixedly installed on the top of the support cylinder, and a plurality of arc spraying guns are equidistantly arranged at the bottom of the heating tube, the arc spraying gun is inclined downward and the spray intersection of the plurality of arc spraying guns is located on the axis of the heating tube, and a feed pipe and an air intake pipe are respectively arranged on the arc spraying gun, and the feed pipe and the air intake pipe respectively pass through the support cylinder, a control panel is arranged on the outer wall of the support cylinder, a clamping wheel is arranged on the top of the support cylinder, and a roller is fixedly installed under the bracket; the storage mechanism includes a support seat, a servo motor is arranged at one end of the support seat, the servo motor is electrically connected to the control panel, and a storage wheel is detachably installed at the output end of the servo motor, the alloy wire passes through the heating tube and the bracket, and the alloy wire passes around the roller so that one end of it is fixedly installed on the storage wheel.

[0006] Preferably, a support plate is provided on the top of the bracket, and the support plate is detachably connected to the support tube. A cone is provided at the center of the support plate, and a through hole is opened through the center of the cone. The through hole and the heating tube are located on the same axis.

[0007] Preferably, the support tube is a transparent structure, and a plurality of air outlets are opened on the outer wall of the support tube. A filter is arranged on the inner side of the air outlet, and a pipe is arranged on the outer side of the air outlet. The other end of the pipe is located below the support plate and facing the alloy wire. A temperature sensor is arranged on the outer wall of the support tube, and the temperature sensor is located below the heating tube, and the temperature sensor faces the alloy wire.

[0008] Preferably, baffles are provided at both ends of the heating tube, a stabilization hole is opened in the middle of the baffle, a coil is provided inside the heating tube, the coil is electrically connected to the control panel, a nitrogen pipe is provided on the top of the heating tube, a gas concentration sensor is provided on the side wall of the heating tube, and the gas concentration sensor is electrically connected to the control panel.

[0009] Preferably, the drum is a hollow structure, support rods are rotatably installed on both sides of the drum, the support rods are fixedly installed below the support plate, cooling pipes are penetrated by the support rods, and the cooling pipes are connected to the inside of the drum.

[0010] Preferably, a special-shaped hole is opened in the middle of the storage wheel, a traction wire is fixedly installed on the storage wheel, a connector is provided at one end of the traction wire, and the connector is detachably connected to the alloy wire.

[0011] Compared with the related art, the high temperature alloy wire surface coating spraying device provided by the present invention has the following beneficial effects:

[0012] 1. The present invention provides a spraying mechanism, and simultaneously sprays the alloy wire with an arc spray gun surrounding the alloy wire, thereby making the coating of the alloy wire sprayed evenly, and heats the alloy wire with a heating tube before heating the alloy wire, thereby increasing the atomic activity on the surface of the alloy wire, thereby improving the degree of bonding between the molten droplet and the alloy wire.

[0013] 2. The present invention sets up a storage mechanism and drives the storage wheel to rotate through a servo motor, so that the rotation of the storage wheel drives the contraction of the traction wire, and the contraction of the traction wire drives the movement of the alloy wire. At the same time, the cooperation between the traction wire and the clamping wheel enables the traction wire to straighten the alloy wire after pulling it, which facilitates the plating of the alloy wire.

[0014] 3. The present invention provides a nitrogen pipe and a gas concentration sensor, and fills the interior of the heating tube with nitrogen through the nitrogen pipe, so that the alloy wire is in nitrogen during heating, thereby avoiding oxidation of the alloy wire after heating, and the nitrogen concentration in the heating tube is monitored by the gas concentration sensor, so that nitrogen can be replenished at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the spraying mechanism of the present invention;

[0018] Figure 3 is a cross-sectional view of the support tube of the present invention;

[0019] Figure 4 is a cross-sectional view of a heating tube of the present invention;

[0020] Figure 5 is a cross-sectional view of the drum of the present invention;

[0021] Figure 6 It is a schematic diagram of the overall structure of the storage mechanism of the present invention;

[0022] Figure 7 It is an enlarged view of point A of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Alloy wire; 2. Spraying mechanism; 21. Bracket; 211. Support plate; 212. Cone; 213. Through hole; 22. Support tube; 221. Air outlet; 222. Filter; 223. Pipe; 224. Temperature sensor; 23. Heating tube; 231. Baffle; 232. Stabilizing hole; 233. Coil; 234. Nitrogen tube; 235. Gas concentration sensor; 24. Arc spraying gun; 25. Feed pipe; 26. Inlet pipe; 27. Control panel; 18. Clamping wheel; 19. Roller; 291. Support rod; 292. Cooling tube; 3. Storage mechanism; 31. Support seat; 32. Servo motor; 33. Storage wheel; 331. Special-shaped hole; 332. Traction wire; 333. Connector. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figures 1 to 7As shown, a high-temperature alloy wire surface coating spraying device is characterized in that it includes an alloy wire 1, a spraying mechanism 2 and a storage mechanism 3, the spraying mechanism 2 includes a bracket 21, a support tube 22 detachably installed above the bracket 21, a heating tube 23 is fixedly installed on the top of the support tube 22, and a plurality of arc spraying guns 24 are equidistantly arranged at the bottom of the heating tube 23, the arc spraying gun 24 is tilted downward and the spray intersection of the plurality of arc spraying guns 24 is located on the axis of the heating tube 23, and a feed pipe 25 and an air inlet pipe 26 are respectively arranged on the arc spraying gun 24, and the feed pipe 25 and the air inlet pipe 26 are respectively arranged on the arc spraying gun 24. 25 and the air intake pipe 26 pass through the support tube 22 respectively, a control panel 27 is arranged on the outer wall of the support tube 22, a clamping wheel 28 is arranged on the top of the support tube 22, and a roller 29 is fixedly installed under the bracket 21; the storage mechanism 3 includes a support seat 31, a servo motor 32 is arranged at one end of the support seat 31, the servo motor 32 is electrically connected to the control panel 27, and a storage wheel 33 is detachably installed at the output end of the servo motor 32, the alloy wire 1 passes through the heating tube 23 and the bracket 21, and the alloy wire 1 passes around the roller 29 so that one end of it is fixedly installed on the storage wheel 33. The alloy wire 1 is squeezed by the clamping wheel 28, so that the movement of the alloy wire 1 is resisted. With the cooperation of the collecting wheel 33, the alloy wire 1 is straightened, so that the alloy wire 1 can be accurately located at the spray intersection of the arc spray gun 24 during spraying, so that the spraying of the alloy wire 1 is more uniform. After the alloy wire 1 is heated by the heating tube 23, the atomic activity on the surface of the alloy wire 1 increases, so that the alloy wire 1 and the molten droplet are more closely combined.

[0028] A support plate 211 is disposed on the top of the bracket 21. The support plate 211 is detachably connected to the support tube 22. A cone 212 is disposed at the center of the support plate 211. A through hole 213 is formed through the center of the cone 212. The through hole 213 is located on the same axis as the heating tube 23. The through hole 213 allows the alloy wire 1 to pass through. The cone 212 can block the molten droplets when they are ejected, preventing the molten droplets from entering the through hole 213, thereby collecting the scattered molten droplets on the support plate 211.

[0029] The support tube 22 is a transparent structure, and a plurality of air outlets 221 are provided on the outer wall of the support tube 22. A filter screen 222 is provided inside the air outlet 221, and a pipe 223 is provided outside the air outlet 221. The other end of the pipe 223 is located below the support plate 211 and directly faces the alloy wire 1. A temperature sensor 224 is provided on the outer wall of the support tube 22. The temperature sensor 224 is located below the heating tube 23, and the temperature sensor 224 directly faces the alloy wire 1. The transparent support tube 22 allows the user to observe the spraying of the alloy wire 1. The air outlet 221 allows the gas sprayed by the arc spray gun 24 to be discharged. In addition, the gas discharged through the air outlet 221 is filtered by the filter screen 222, and the gas passes through the pipe 223 to cool the alloy wire 1 after coating.

[0030] Baffles 231 are provided at both ends of the heating tube 23, a stabilizing hole 232 is provided in the middle of the baffle 231, a coil 233 is provided inside the heating tube 23, the coil 233 is electrically connected to the control panel 27, a nitrogen pipe 234 is provided on the top of the heating tube 23, a gas concentration sensor 235 is provided on the side wall of the heating tube 23, and the gas concentration sensor 235 is electrically connected to the control panel 27. The heating tube 23 heats the alloy wire 1 through the coil 233, and the nitrogen pipe 234 fills the heating tube 23 with nitrogen to prevent the alloy wire 1 from being oxidized during the heating process; the gas concentration sensor 235 monitors the nitrogen concentration in the heating tube 23, and replenishes nitrogen through the nitrogen pipe 234 after the nitrogen concentration decreases.

[0031] The roller 29 is a hollow structure, and support rods 291 are rotatably installed on both sides of the roller 29. The support rods 291 are fixedly installed below the support plate 211. A cooling pipe 292 is provided through the support rod 291, and the cooling pipe 292 is connected to the inside of the roller 29. Cooling liquid flows in the cooling pipe 292, and the cooling liquid fills the roller 29. When the alloy wire 1 drives the roller 29 to roll, the roller 29 cools down the alloy wire 1 through heat conduction, and the flow of the cooling liquid cools down the roller 29 again.

[0032] A special-shaped hole 331 is provided in the middle of the receiving wheel 33, and a traction wire 332 is fixedly mounted on the receiving wheel 33. A connector 333 is provided at one end of the traction wire 332, and the connector 333 is detachably connected to the alloy wire 1. The special-shaped hole 331 can make it easier for the servo motor 32 to drive the receiving wheel 33 to rotate, and the receiving wheel 33 rotates to pull the traction wire 332 to contract, and the traction wire 332 is connected to the alloy wire 1 through the connector 333, so that the receiving wheel 33 can pull the alloy wire 1 through the traction wire 332, so that the alloy wire 1 is straightened, so that the alloy wire 1 is more uniform during spraying.

[0033] Example 2

[0034] The material delivery pipe 25 and the air intake pipe 26 of the present invention respectively transport metal powder and compressed gas through the pump body, and the pump body is electrically connected to the control panel 27;

[0035] The cooling pipe 292 of the present invention is filled with coolant, and a circulating pump is connected to the cooling pipe 292;

[0036] The connector 333 of the present invention adopts the existing wire connection device;

[0037] The traction wire 332 of the present invention can withstand high temperatures and has strong pulling force;

[0038] The pinch wheel 28 of the present invention is an existing wire conveying device, which can adjust the squeezing force on the alloy wire 1;

[0039] The nitrogen pipe 234 and the air intake pipe 26 of the present invention are provided with a solenoid valve, and the solenoid valve is electrically connected to the control panel 27;

[0040] The servo motor 32 and the control panel 27 of the present invention use an external power supply;

[0041] The arc spray gun 24 of the present invention is electrically connected to the control panel 27, and the arc spray gun 24 has the same structure as the existing spray mechanism 2;

[0042] The roller 29 of the present invention is sealed with the support rod 291, and the roller 29 can rotate on the support rod 291;

[0043] The temperature sensor 224 of the present invention is an infrared temperature sensor 224;

[0044] The pipe 223 of the present invention is provided with a sponge inside.

[0045] Example 3

[0046] Working principle: Before spraying the alloy wire 1, first pull the traction wire 332 around the roller 29, then pull the traction wire 332 through the through hole 213 and the heating tube 23, then pass the alloy wire 1 through the clamping wheel 28, and fix the alloy wire 1 to the connector 333, then use the control panel 27 to make the nitrogen pipe 234 fill the heating tube 23 with nitrogen, and start the servo motor 32 and the arc spray gun 24 at the same time, and the feed pipe 25 transports metal particles to the arc spray gun 24, and the arc spray gun 24 sprays the metal particles. After melting, the air inlet pipe 26 ejects compressed gas, so that the molten droplets are ejected, and after the servo motor 32 is started, it drives the storage wheel 33 to rotate, and after the storage wheel 33 rotates, it drives the traction wire 332 to contract, and the contraction of the traction wire 332 drives the alloy wire 1 to straighten, and the alloy wire 1 is transported under the action of the traction wire 332, and the traction wire 332 is heated by the coil 233 in the heating tube 23, so that the atoms on the surface of the alloy wire 1 are active, and the heating tube 23 is filled with nitrogen, which prevents the alloy wire 1 from being oxidized after heating. After the alloy wire 1 is continuously conveyed, the temperature sensor 224 monitors the temperature of the alloy wire 1 to prevent the alloy wire 1 from being overheated and causing changes in its mechanical properties. The heated alloy wire 1 is sprayed by the arc spray gun 24 surrounding it as it is conveyed, so that the alloy wire 1 is evenly sprayed. After the alloy wire 1 is continuously conveyed, the alloy wire 1 passes through the through hole 213 and leaves the support plate. At this time, after the gas ejected by the arc spray gun 24 filters the molten droplets in the filter screen 222, the clean gas passes through the gas outlet 221 and the pipeline. 223 blows on the alloy wire 1 after coating to cool it. Since the gas ejected from the pipe 223 is hot air at this time, the alloy wire 1 will not cool down quickly to prevent the coating from cracking after cooling too quickly. After the alloy wire 1 continues to be transported, the alloy wire 1 bypasses the roller 29 and makes the roller 29 rotate. Coolant flows inside the roller 29. After heat conduction between the alloy wire 1 and the roller 29, the alloy wire 1 cools down quickly and is wound around the collecting wheel 33 as the collecting wheel 33 rotates.

Claims

1. A high temperature alloy wire surface coating spraying device, characterized in that: The invention comprises an alloy wire (1), a spraying mechanism (2) and a storage mechanism (3), wherein the spraying mechanism (2) comprises a bracket (21), a support tube (22) which is detachably mounted on the top of the bracket (21), a heating tube (23) being fixedly mounted on the top of the support tube (22), a plurality of arc spraying guns (24) being equidistantly arranged at the bottom of the heating tube (23), the arc spraying guns (24) being inclined downward and the spraying intersection points of the plurality of arc spraying guns (24) being located on the axis of the heating tube (23), and a feed pipe (25) and an air intake pipe (26) being respectively arranged on the arc spraying guns (24), the feed pipe (25) and the air intake pipe (26) respectively penetrating the support tube (21), and the feed pipe (25) and the air intake pipe (26) respectively penetrating the support tube (21). The support tube (22) is provided with a control panel (27) on the outer wall of the support tube (22), a pressure wheel (28) is provided on the top of the support tube (22), and a roller (29) is fixedly installed under the support (21); the storage mechanism (3) comprises a support seat (31), a servo motor (32) is provided at one end of the support seat (31), the servo motor (32) is electrically connected to the control panel (27), and a storage wheel (33) is detachably installed at the output end of the servo motor (32), the alloy wire (1) passes through the heating tube (23) and the support (21), and the alloy wire (1) passes around the roller (29) so that one end of the alloy wire (1) is fixedly installed on the storage wheel (33).

2. A high temperature alloy wire surface coating spraying device according to claim 1, characterized in that: A support plate (211) is arranged on the top of the bracket (21), and the support plate (211) is detachably connected to the support tube (22). A cone (212) is arranged at the center of the support plate (211), and a through hole (213) is opened through the center of the cone (212). The through hole (213) and the heating tube (23) are located on the same axis.

3. A high temperature alloy wire surface coating spraying device according to claim 1, characterized in that: The support tube (22) is a transparent structure. A plurality of air outlets (221) are provided on the outer wall of the support tube (22). A filter screen (222) is provided on the inner side of the air outlet (221). A pipe (223) is provided on the outer side of the air outlet (221). The other end of the pipe (223) is located below the support plate (211) and directly faces the alloy wire (1). A temperature sensor (224) is provided on the outer wall of the support tube (22). The temperature sensor (224) is located below the heating tube (23), and the temperature sensor (224) directly faces the alloy wire (1).

4. A high temperature alloy wire surface coating spraying device according to claim 1, characterized in that: Baffles (231) are provided at both ends of the heating tube (23), a stabilizing hole (232) is provided in the middle of the baffle (231), a coil (233) is provided inside the heating tube (23), the coil (233) is electrically connected to the control panel (27), a nitrogen pipe (234) is provided at the top of the heating tube (23), a gas concentration sensor (135) is provided on the side wall of the heating tube (23), and the gas concentration sensor (235) is electrically connected to the control panel (27).

5. The high temperature alloy wire surface coating spraying device according to claim 1, characterized in that: The roller (29) is a hollow structure. Support rods (291) are rotatably mounted on both sides of the roller (29). The support rods (291) are fixedly mounted below the support plate (211). A cooling pipe (292) is provided through the support rods (291). The cooling pipe (292) is communicated with the inside of the roller (29).

6. A high temperature alloy wire surface coating spraying device according to claim 1, characterized in that: A special-shaped hole (331) is provided in the middle of the receiving wheel (33), a traction wire (332) is fixedly mounted on the receiving wheel (33), one end of the traction wire (332) is provided with a connector (333), and the connector (333) is detachably connected to the alloy wire (1).

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