126 results about "Arc spray" patented technology

The utility model discloses a spraying device convenient for angle adjustment, which belongs to the technical field of spraying devices and comprises a device body, and a plurality of supporting legs are fixedly connected to the bottom of the device body. When the device is used, a workpiece needing to be sprayed is placed on the placing plate, then the motor is started and drives the rotating shaft to rotate, when the rotating shaft rotates, the gear connected with the rotating shaft can be driven to rotate synchronously, and the rotating disc is driven to rotate through meshing transmission of the gear and the gear ring; when the arc-shaped spraying piece rotates by 360 degrees, the movable rod is driven to move in the annular limiting groove in a surrounding mode, at the moment, paint enters the containing cavity from the conveying pipe under the action of the high-pressure pump and is sprayed out through the spraying holes, and therefore by arranging the arc-shaped spraying piece, when the arc-shaped spraying piece rotates by 360 degrees, all-directional spraying can be achieved on the workpiece, and therefore the high spraying efficiency is achieved; and the spraying effect of the spraying device is improved.

The invention provides a pipeline electric arc spraying robot. The pipeline electric arc spraying robot comprises a machine shell, a walking supporting mechanism, a spraying assembly, a reducing mechanism and a driving mechanism. The spraying assembly is arranged at the rear end of the machine shell and used for forming a metal coating on the inner wall of the pipeline through electric arc spraying. The walking supporting mechanism comprises three sets of walking supporting assemblies which are evenly distributed on the periphery of the machine shell at 120-degree intervals. The diameter changing mechanism comprises three sets of self-adaptive diameter changing assemblies which correspond to the three sets of walking supporting assemblies one to one and are evenly arranged, each set of self-adaptive diameter changing assembly is connected with the corresponding set of walking supporting assembly, and the driving mechanism is installed in the machine shell and connected with the diameter changing mechanism. The reducing mechanism can be controlled by the driving mechanism to drive the three sets of walking supporting assemblies to move in the radial direction relative to the machine shell so as to adapt to the change of the pipe diameter of the pipeline, and each set of self-adaptive reducing assembly comprises a first reducing assembly and a second reducing assembly. Through coordination and cooperation of an active mode and a passive mode of the reducing mechanism, good pipeline self-adaptive capacity is achieved.

A process and spraying equipment for arc spraying carbon steel pipes. The process includes the following steps: S1: installing a raw metal wire(13) on a wire feeder(12), adjusting the wire feeding voltage according to the required thickness of spraying, and adjusting the spraying current according to the material of the raw metal wire(13); S2: spraying inner and outer walls of the pipe through an inner wall spray gun(14) and an outer wall spray gun(16); S3: after the pipe being sprayed, cooling it naturally to room temperature; S4: putting the cooled pipe into a heating furnace, adjusting the heating temperature according to the required surface alloy thickness, and cooling it in the furnace or natural cooling outside the furnace after the insulation is completed; meanwhile, the surface alloy layer is formed on the inner and / or outer wall of the carbon steel pipe; S5: after the pipe being cooled to room temperature, using a medium frequency heat treatment equipment to heat-treat the pipe through the heat treatment process.

The invention discloses a supersonic speed electric arc spraying wear-resistant and corrosion-resistant coating material and a preparation method, the supersonic speed electric arc spraying wear-resistant and corrosion-resistant coating material is composed of the following components of, by mass, 60-75 parts of NiCr alloy, 15-25 parts of WC-Co, 5-10 parts of Al2O3-TiO2 composite ceramic powder and 1-3 parts of rare earth oxide Y2O3, a coating is of a gradient composite structure, and the NiCr alloy and the WC-Co are distributed in a gradient mode according to the spraying layer number. The preparation method comprises the steps that the surface of the base body is subjected to sand blasting roughening treatment; a supersonic speed electric arc spraying device is adopted for spraying, the electric arc current is controlled to range from 130 A to 210 A, and the spraying distance ranges from 80 mm to 150 mm; and coating hole sealing treatment. Through a composite metal-ceramic material system and a rare earth element grain refinement effect and in combination with a supersonic spraying process, the compactness (porosity is smaller than or equal to 1.5%) of the coating is remarkably improved, the bonding strength of the coating is larger than or equal to 50 MPa, the HV hardness is larger than or equal to 800, the service life in a high-temperature corrosion environment is prolonged by three times or above, and the coating is suitable for surface protection under severe working conditions such as a boiler water cooling wall.

The present invention relates to a zinc-based alloy wire suitable for arc spraying and a preparation method thereof. In a protective atmosphere, zinc and aluminum are melted in proportion to form a molten metal, and a zinc-aluminum alloy wire is obtained through processes such as cooling, aging treatment, and drawing. After surface treatment, a layer of pure copper and pure nickel is electroplated on the surface of the wire in succession, and finally a nickel-plated arc sprayed zinc-based alloy wire is obtained. The present invention electroplates nickel on the surface of the zinc-aluminum alloy wire through a certain process. After multiple studies and comparative verifications, the prepared alloy wire has a dense structure and a strong coating bonding force, which can meet the conditions for arc spraying. Compared with similar alloy wires, the alloy wire preparation cost of the present invention is greatly reduced, and the corrosion resistance of the arc spray coating is significantly improved.

The invention discloses hot galvanizing furnace nose wallboard spraying equipment, and relates to the field of electric arc spraying, the hot galvanizing furnace nose wallboard spraying equipment comprises a wallboard clamping device, a three-axis positioning device located on one side of the wallboard clamping device, and an electric arc spraying device and a plate surface measuring device which are symmetrically arranged at the execution end of the three-axis positioning device. The spraying equipment can automatically plan and realize intermittent jumping spraying, and the risk of microcracks of a coating due to thermal stress is effectively avoided; according to the scheme, a control center serves as a core, wall plate clamping, three-axis positioning, curved surface measuring and electric arc spraying devices are dispatched in a unified mode, and whole-course automatic operation from plate body clamping, posture correction, contour scanning to final spraying is achieved.

The coating method of the chamber for the deposition process according to the present invention comprises: a step a for forming a lower coating layer by performing an arc spraying process on an object to be coated using an aluminum wire; and a step b of forming an upper coating layer by subjecting a metal compound powder to a physical vapor deposition process on the lower coating layer formed in the step a, the metal compound in the step b has the same component as the PVD process by-product, so that the yield of semiconductor production can be increased by prolonging the maintenance and management period of the components in the chamber.

An isolating switch belongs to the technical field of low-voltage apparatuses. Which comprises a shell, an arc extinguishing device and a contact system, the arc extinguishing device and the contact system are arranged in the shell, the arc extinguishing device is provided with an arc channel extending in the moving direction of a moving contact of the contact system, and an exhaust port is formed in the shell. And the exhaust port is blocked by the baffle plate, so that a bent channel bypassing the baffle plate is formed between the arc channel and the exhaust port. The arc running channel has the advantages that the movement distance of the charged metal particles is prolonged, the contact area of the charged metal particles and the inner wall of the arc running channel is increased, the cooling and deionization effects on the charged metal particles are enhanced by arc extinguishing gas generated by the baffles, and the arc running channel can avoid arc spraying, remarkably improve the safety and is simple in structure.

The utility model belongs to the technical field of lightning protection current transformers, and particularly relates to an energy storage current transformer with a lightning protection module, which comprises a current transformer shell, a connecting seat connected to the outer side of the current transformer shell, a lightning protection assembly connected to the current transformer shell, and a lightning protection device connected to the inner side of the current transformer shell, the surge protector and the lightning protection device are arranged on the inner side of the converter shell, the surge protector and the lightning protection device are connected with an external grounding system through a grounding wire, the movable ventilation part assists in air exhaust and heat dissipation of the interior of the converter shell, the lightning protection device is matched with the grounding wire, and when lightning stroke occurs, lightning impulse energy is absorbed and discharged by the grounding wire through the external grounding system. And meanwhile, the surge protector works, so that the possibility that other devices in the box body are damaged when the lightning protection device generates an arc spraying phenomenon is reduced.

The utility model relates to the technical field of target material production, in particular to a clamp for electric arc spraying. Comprising a jacking piece, one end of the jacking piece is provided with a jacking column coaxial with the jacking piece, the other end of the jacking piece is provided with a circular truncated cone and a protruding ring which are coaxial with the jacking piece, the protruding ring is located on the outer side of the circular truncated cone, and a first groove is formed between the protruding ring and the circular truncated cone; a plurality of second grooves are formed in the outer circumference of the protective sleeve, the extending direction of the second grooves is parallel to the axis of the protective sleeve, segmentation blocks are detachably connected into the second grooves, fin plates are arranged on the two sides of each segmentation block, and third grooves are formed in the sides, close to the protective sleeve, of the segmentation blocks. The coating section outside the protective sleeve is easy to take down.

The present application relates to a kind of corrosion and wear resistant thermal spraying nickel-based composite non-slip coating and its preparation method, belong to non-slip coating technical field.It includes alloy steel matrix, corrosion-resistant bottom layer and non-slip surface layer from bottom to top sequentially arranged;Wherein, the corrosion-resistant bottom layer is nickel-based superalloy, and the thickness of corrosion-resistant bottom layer is 50-200 μm;The non-slip surface layer is composed of the same nickel-based superalloy as corrosion-resistant bottom layer, nano alumina particles and micron alumina particles, and the thickness of non-slip surface layer is 300-600 μm.Using plasma enhanced high-speed arc spray technology realizes the high efficiency, high quality preparation of alloy bottom layer and metal / ceramic surface layer, and the obtained nickel-based composite non-slip coating has excellent properties such as non-slip, wear resistance and corrosion resistance, which can effectively improve the deck surface performance and service life of various large marine engineering equipment.

The invention discloses an intelligent nonlinear current-limiting direct lightning protection device, which belongs to the field of direct lightning protection and comprises a current-limiting lightning rod, a multi-gap assembly and a lightning current measurement assembly. By arranging the multi-gap assembly on the current-limiting lightning rod, when the lightning current exceeds the through-current capability of the current-limiting lightning rod, the lightning current is conducted and reduced through the main gap and the multiple gaps on the multi-gap assembly; under the action of the current-limiting lightning rod, the main discharge time of lightning is prolonged from microsecond level to millisecond level, and when the lightning flows through too many gaps, a radial arc spraying effect is generated to further prolong the main discharge time of lightning, so that the lightning waves are changed from continuous waves to discontinuous waves, flashover of the current-limiting lightning rod is avoided, and damage of lightning current to the rod body is avoided; the direct lightning protection device has a self-protection capability; by arranging the lightning current measurement assembly, the device has intelligent functions of lightning current data measurement and transmission, and lightning big data is formed to provide support for follow-up research, product improvement, customer demand meeting and the like.

The present invention discloses a coastal climate steel structure arc spraying composite anti-corrosion device and a spraying method, belonging to the field of steel structure spraying in coastal climate, including a coastal climate steel structure arc spraying composite anti-corrosion device, including an H-shaped workpiece. Hoisting holes are respectively opened at both ends of the H-shaped workpiece. The device further includes a machine table frame, on which a clamping assembly, a driving assembly and a spraying assembly are respectively installed; The clamping assembly includes a center frame, and an installation block is arranged inside the center frame. A plurality of groups of installation blocks are arranged and each is provided with a first installation hole. A clamp is installed on the installation block, and the clamp is suitable for installing and clamping the H-shaped workpiece; The driving assembly includes a rotating mechanism and an external power supply, and the rotating mechanism is suitable for driving the rotation of the workpiece under the external power supply; The spraying assembly includes a spray gun and a track frame. The track frame includes an arc-shaped bottom, and a driving part is installed on the top of the track frame. The driving part is suitable for driving the spray gun to move on the arc-shaped bottom, and the spray gun is suitable for spraying on the surface and both ends of the H-shaped workpiece. The present invention solves the problem that it is difficult to spray both ends of the H-shaped workpiece.

The present invention relates to a method for spraying zinc on the surface of a porous flat tube. A spraying robot is used to perform the zinc spraying operation on the porous flat tube, and a high-frequency self-vibration mechanism is used to clamp the porous flat tube and apply high-frequency vibration to the porous flat tube. The high-frequency self-vibration mechanism includes a chuck, a square plate, two excitation mechanisms for applying excitation to the square plate, a turntable for rotating the square plate and the excitation mechanisms, a driving mechanism for driving the turntable to rotate, and a movable support mechanism arranged between the square plate and the turntable. The excitation mechanism includes a vibrator and a damper. The present invention improves the zinc spraying quality by optimizing the zinc spraying process for the porous flat tube. The six-axis robot is used to control the arc spraying machine, with higher automation degree, flexible and variable zinc spraying angles, and no spraying dead angles. The high-frequency self-vibration mechanism applies high-frequency vibration to the clamped porous flat tube, significantly improving the compactness of the zinc spraying layer, with better salt spray resistance performance, stronger corrosion resistance, and higher spraying quality of the zinc spraying layer.

The present invention relates to the technical field of material processing engineering, and specifically to a seamless cored wire for preparing an Al-based composite coating with a high alumina content and a preparation method thereof. The cored wire is obtained by wrapping a cored powder with an industrial pure aluminum tube and subjecting it to rotary forging. The cored powder includes aluminum alloy powder and Al2O3 ceramic powder, and the total content of the alumina ceramic powder in the cored powder is ≥ 30 wt%. By regulating the composition of the cored wire and combining with the rotary forging process, the present invention can prepare a cored wire with a high Al2O3 content. The cored wire has a smooth appearance, high density, and high heat conduction efficiency, and is particularly suitable for the preparation of an arc spraying coating with high wear resistance. The prepared coating has good bonding with the substrate, no obvious defects in the coating, uniform distribution of the ceramic phase, high deposition rate, and thus high hardness and good wear resistance.

The invention discloses a spraying and coating material adding device and an electric arc spraying material adding method in the technical field of surface spraying material adding. The spraying and coating material adding device comprises a spraying pipe, a blocking cover and a wire guiding mechanism. The upper end of the spray pipe is communicated with a high-pressure protective gas source; a spraying space is defined by the blocking cover on the outer side of the spraying pipe, the spraying end is arranged in the spraying space, the upper end of the blocking cover is connected with the spraying pipe, and the lower end of the blocking cover is provided with an air leakage edge capable of elastically deforming. The wire guiding mechanisms are arranged on the two sides of the spraying pipe in pairs and used for conveying the metal wires to the lower side of the spraying end. According to the spray coating additive material device, in the additive material spraying process, air in the inner space is exhausted, the high-purity protective gas atmosphere is maintained, oxidation and pollution are reduced, and the additive material efficiency and quality are improved. And a gap is formed between the elastically-deformed gas release edge and the surface of the base material so as to discharge gas, so that the loss of shielding gas can be reduced, the device is self-adaptive to the uneven surface of the base material, and the material adding efficiency is improved.

The utility model belongs to the technical field of enamel production and processing equipment, and particularly relates to a quick and uniform enamel spraying device which comprises a lateral connecting frame, a control panel and a fixed base, the control panel is arranged on the outer side end face of the lateral connecting frame, and the fixed base is arranged at the side end of the lateral connecting frame. By arranging the feeding bin, the feeding pipe, the arc-shaped spraying frame, the connecting shaft, the motor and the pressurizing bin, enamel needing to be sprayed is placed at the upper end of the fixed base, then the motor and the liquid pump are started, the liquid pump pumps paint in the feeding bin into the pressurizing bin through the feeding pipe, and the enamel is sprayed through the spraying opening; the motor drives the connecting shaft to rotate, the arc-shaped spraying frame rotates at the same time when the connecting shaft rotates, through the special form of the arc-shaped spraying frame, the spraying opening surrounds the enamel structure from the periphery by 360 degrees till spraying is completed, and therefore compared with traditional enamel spraying equipment, the equipment can achieve surrounding type automatic spraying, and the enamel spraying speed is greatly increased.

The utility model provides an arc extinguishing assembly and a circuit breaker, and relates to the technical field of electrical equipment. The arc extinguishing assembly comprises an arc extinguishing chamber and an arc extinguishing structure. The arc extinguishing chamber is provided with an exhaust end, the arc extinguishing structure comprises a plurality of arc extinguishing grid plates which are arranged at intervals, an interval between every two adjacent arc extinguishing grid plates forms an air passing hole, and the air passing holes are opposite to the exhaust end. Under the condition that an electric arc flows out of the exhaust end, the electric arc can enter the arc extinguishing structure through the air passing hole and is cut by the arc extinguishing grid sheet, so that the electric arc is extinguished. Therefore, the electric arc can be extinguished under the condition that the electric arc flows out of the arc extinguish chamber, the possibility that the electric arc is reignited in the circuit breaker and even the electric arc is sprayed out of the circuit breaker due to failure of the arc extinguish chamber is reduced, and potential safety hazards can be reduced.

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.

The application discloses a neodymium-iron-boron permanent magnet surface anticorrosion coating and a preparation method thereof, and the preparation method comprises the following steps: pretreating the neodymium-iron-boron permanent magnet, depositing an aluminum-based alloy coating on the surface of the pretreated neodymium-iron-boron permanent magnet through arc spraying, and performing vacuum heat treatment and coating of a sealing agent, wherein the temperature of the vacuum heat treatment is 400 DEG C to 600 DEG C, so that the neodymium-iron-boron permanent magnet surface anticorrosion coating is obtained. The neodymium-iron-boron permanent magnet surface anticorrosion coating of the application can greatly improve the bonding strength and the anticorrosion performance through the construction of a composite protection system of a "metallurgical bonding diffusion layer (bottom layer) + Al sacrificial anode protection layer (middle layer) + sealing agent barrier layer (surface layer)", which has important industrial value for improving the service life of the neodymium-iron-boron magnet in severe environments and widening the application scenarios of the neodymium-iron-boron magnet.

The invention provides an uninterruptible power supply module and an uninterruptible power supply. The uninterruptible power supply module comprises two PCBs (Printed Circuit Board); the first radiator and the second radiator are arranged on the top surface of each PCB; the first power semiconductor is arranged on the first radiator, and the second power semiconductor is arranged on the second radiator; and the driving device is arranged on the bottom surface. The driving device is arranged on the bottom surface of the PCB, so that the arrangement position of the transformer is more flexible, more space can be avoided for an area between the first radiator and the second radiator, and the structural sizes of the first radiator and the second radiator can be increased, so that the heat dissipation capability of the first radiator and the second radiator is improved. The driving device and the power semiconductors are located on different sides of the PCB, when the first power semiconductor and the second power semiconductor fail, burst and arc spraying occur, the driving device is not prone to being polluted by the arc spraying, and therefore the diffusion range of machine faults is reduced.

The invention discloses a monolithic catalyst based on a metal carrier, a preparation method and application. The method comprises the following steps: performing alkali / acid ultrasonic cleaning on a metal carrier, drying, forming an oxide layer on the surface of the carrier through gradient oxidation treatment, and finally loading a catalyst layer by adopting an impregnation method, a 3D printing coating method or an electric arc spraying method, surface impurities are removed through alkali etching, and a special oxide layer structure is formed on the surface of the metal carrier in combination with a gradient oxidation process, so that the interface bonding strength of the catalyst and the carrier is remarkably enhanced, and the mass transfer / heat transfer performance is optimized. The method is simple in process and easy for large-scale production, and the prepared catalyst shows excellent catalytic activity and high-temperature stability in ammonia decomposition hydrogen production reaction, and is especially suitable for high-efficiency hydrogen production application under high-temperature conditions.

The utility model provides a spraying device for processing an automobile spoiler, which relates to the technical field of spraying devices, and comprises a processing table, a fan, ventilation windows and a spraying device, the processing table is provided with a protective cover, the upper surface of the protective cover is provided with the fan, the two sides of the protective cover are provided with the ventilation windows, and the protective cover is provided with an operation panel; the spraying mechanism is arranged on the rear side of the protective cover, and the spraying mechanism comprises a liquid storage tank and an arc-shaped spraying pipe; the collecting mechanism is arranged below the machining table and used for collecting redundant spraying liquid in the spraying process. Under the cooperative driving of the motor and the arc-shaped gear ring, the arc-shaped spray pipe can do arc-shaped motion along a specific track, so that the arc-shaped spray pipe gradually moves from one end to the other end above the automobile spoiler, all parts of the automobile spoiler are uniformly and accurately covered with paint, the spraying quality and efficiency are greatly improved, and the spraying efficiency is improved. And common paint surface defects caused by manual spraying are effectively avoided, and the yield is remarkably improved.

This utility model relates to the field of EVA sheet technology and discloses a wear-resistant EVA sheet for automotive applications. It includes an EVA sheet body, with a first wear-resistant layer fixedly disposed on the outer side of the EVA sheet body. A second wear-resistant layer is fixedly disposed on the side of the EVA sheet body away from the first wear-resistant layer. The first wear-resistant layer is a chromium oxide coating, applied uniformly to the outer surface of the EVA sheet body using arc spraying, with a spray thickness of 0.6–0.8 cm. The second wear-resistant layer is also a chromium oxide coating, applied uniformly to the outer surface of the EVA sheet body using arc spraying, with a spray thickness of 0.6–0.8 cm. This wear-resistant EVA sheet for automotive applications features chromium oxide coatings in both the first and second wear-resistant layers, which exhibit good coating toughness, chemical stability at high temperatures, corrosion resistance, abrasive wear resistance, and anti-wetting properties, thus improving the wear resistance of the EVA sheet body. The epoxy coatings in the first and second corrosion-resistant layers have good adhesion and chemical resistance.

This invention discloses a hot-dip galvanizing furnace nose panel spraying equipment, relating to the field of arc spraying. It includes a panel clamping device, a three-axis positioning device located on one side of the panel clamping device, and an arc spraying device and a panel measuring device symmetrically arranged at the execution end of the three-axis positioning device. The spraying equipment of this invention can automatically plan and achieve intermittent skip spraying, effectively avoiding the risk of micro-cracks in the coating due to thermal stress. This solution uses a control center as its core, uniformly scheduling the panel clamping, three-axis positioning, surface measurement, and arc spraying devices, realizing fully automated operation from panel clamping, posture correction, contour scanning to final spraying.

The invention relates to a method for quickly acquiring dynamic mechanical properties of a surface layer of an electromagnetic launching track. Belongs to the technical field of electromagnetic track launching. The armature material spraying layer is prepared on the electromagnetic track material through electric arc spraying, interface diffusion of the track and the armature material is promoted through electric pulse treatment, the internal structure and performance of the spraying layer are regulated and controlled through heat treatment, and finally a reconstructed sample piece with the size meeting dynamic mechanical property test research is obtained. And during electric treatment, current flows through the electromagnetic track material from the armature material spraying layer. According to the method, a large number of reliable samples can be obtained in an extremely short time, and necessary conditions are provided for optimization of electromagnetic emission armatures and track materials and scientific and effective evaluation of electromagnetic emission life.

A safety type circuit breaker comprises a circuit breaker body, the circuit breaker body comprises a shell, a closing assembly, an arc extinguishing assembly and an overload protection mechanism, the closing assembly, the arc extinguishing assembly and the overload protection mechanism are arranged in the shell, the closing assembly comprises a movable contact, a static contact and a binding post, and the arc extinguishing assembly comprises an arc striking plate, a plurality of arc dividing grooves, a plurality of arc extinguishing grid pieces and a plurality of arc spraying outlets. The shell is internally provided with a first arc dividing plate and a second arc dividing plate, the first arc dividing plate and the second arc dividing plate are located on one side of the arc outlets formed by the arc extinguishing grid pieces and have an arc travel distance, and the first arc dividing plate is used for guiding the arc to the arc spraying outlets located on the upper portion and the middle portion of the middle. The second arc dividing plate is used for guiding the electric arc to an arc spraying outlet located in the lower middle position.

The utility model discloses an electric arc spraying machine, and relates to the technical field of thermal spraying. The device comprises a shell, an air inducing bin is formed in the shell, a conical exhaust outlet communicating with the air inducing bin is formed in one end of the shell, one end of the shell is in threaded connection with an air guiding pipe communicating with the air inducing bin, mounting bins communicating with the air inducing bin are symmetrically formed in one end of the shell, and mounting rollers are rotationally connected to the interiors of the mounting bins; and a metal wire coil fixedly sleeves one end of the metal wire coil. Positive and negative currents are provided for the two metal wire coils through the electrodes correspondingly, so that the two metal wire coils form a short circuit, high-temperature melting is generated, meanwhile, air blows molten metal liquid of the metal wire coils to be sprayed to the surface of a workpiece, and meanwhile the flow dividing plate is used in cooperation with the air guiding opening and the air guiding plate; part of air guided into the air inducing bin through the air guiding pipe is sprayed to the surfaces of the heat dissipation fins, and therefore heat exchange cooling is achieved through the air and the heat dissipation fins.

The invention discloses an internal thread aluminum pipe, a preparation method, an aluminum alloy and a heat exchanger, and relates to the technical field of aluminum alloys. Pure zinc is molten through an electric arc spraying or plasma spraying process, the molten zinc is atomized through high-speed airflow, atomized zinc particles are accelerated to be sprayed to the aluminum pipe to form a coating, then preparation is completed through heat treatment, parameters such as the zinc impregnation depth and the zinc layer coverage degree are further strictly limited, and the zinc coating is prepared. The anti-corrosion performance of the manufactured internal thread aluminum pipe is greatly improved, and the requirement for the service life of an air conditioner outdoor unit aluminum pipe condenser is met. In addition, the invention further develops an aluminum alloy with a specific formula, the internal thread aluminum pipe made of the aluminum alloy is matched with the zinc spraying process, and the anti-corrosion performance of the internal thread aluminum pipe is further improved.

The utility model provides an electric arc spraying device, which relates to the technical field of electrical equipment manufacturing and comprises a stabilizing frame, a controller is externally mounted on the outer side of the stabilizing frame, a stabilizing plate is arranged on one side of the stabilizing frame, a fan is mounted above the stabilizing plate, a stabilizing rod is mounted above the stabilizing frame, and the stabilizing rod is connected with the controller. And a positioning frame capable of moving up and down is mounted on the outer side of the stabilizing rod. The stable vertical moving effect of the spraying body is achieved through the arrangement of the stabilizing rod and the positioning frame, the stable transverse moving effect of the spraying body is achieved through the arrangement of the sliding groove and the sliding block, the spraying body stably conducts electric arc spraying on a workpiece, and the problem that the workpiece is unstable during electric arc spraying is solved.