Electron beam welding device for titanium alloy closing box-shaped piece

Abstract

The utility model discloses an electron beam welding device for a titanium alloy closing-in box-shaped piece, which belongs to the technical field of titanium alloy processing, and comprises a shell mechanism and a numerical control mechanism, the top end of the shell mechanism is fixedly provided with a welding mechanism used for generating electron beams, and the numerical control mechanism is fixedly provided with a clamping mechanism. And a numerical control mechanism for controlling the displacement of a workpiece is fixedly mounted on the rear wall in the shell mechanism. Through the arrangement of the shell mechanism, the numerical control mechanism and the flushing mechanism, the device can clean oxide and hydrocarbon of a titanium alloy workpiece before welding, so that normal crystallization of weld metal is guaranteed, impurity inclusion is avoided, and the welding quality is improved; the whole process of cleaning, flushing and welding the workpiece can be carried out in a vacuum environment, oxide is prevented from being formed on the surface of the titanium alloy workpiece in the transportation and transfer process, and the purity and welding quality of the workpiece are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to titanium alloy processing technical field especially is related to a titanium alloy closing box shape piece electron beam welding device. BACKGROUND

[0002] Titanium alloy processing is the process that titanium alloy material is made into the required shape and precision spare part by cutting, forging, casting and various processes. Because of its high strength, small density, good corrosion resistance and other characteristics, it is widely used in aerospace and other fields. Electron beam welding is in a vacuum environment, using high-energy electron beam to hit the joint of the welding part, so that the metal melts and fuses instantly. This welding method has high energy density, large weld seam depth-width ratio, small heat-affected zone and small deformation, and can realize precise welding, especially suitable for welding some refractory metals and precise and complex titanium alloy components, and is widely used in industries with high welding quality requirements such as aviation and electronics.

[0003] The existing electron beam welding device mostly only has the function of welding, and does not have the function of cleaning the oxides and hydrocarbons of the workpiece. Because titanium has strong affinity with oxygen and carbon, the titanium alloy workpiece often needs to be cleaned with cleaning liquid before processing. Otherwise, the residual oxides and hydrocarbons will react with titanium during the welding process to generate hard and brittle compounds such as TiO2 and TiC. The presence of these brittle phases will sharply deteriorate the toughness of the welded joint, increasing the risk of brittle fracture of the welding part during use. In the existing technology, the titanium alloy workpiece is first cleaned in an external cleaning tank, and then quickly transferred to the vacuum electron beam welding device for welding processing. Although this method can effectively improve the welding quality, the cleaning, flushing and transfer processes are not carried out in a vacuum environment. The titanium alloy workpiece will inevitably come into contact with air during these processes. Because titanium is highly active, when the titanium alloy comes into contact with air, a layer of oxide film will quickly form on its surface, which will still have some impact on the welding quality.

[0004] Therefore, there is an urgent need to provide a titanium alloy closing box shape piece electron beam welding device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a titanium alloy closing box shape piece electron beam welding device.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a titanium alloy closing box shape piece electron beam welding device, which comprises a shell mechanism and a numerical control mechanism. The top end of the shell mechanism is fixedly installed with a welding mechanism for generating an electron beam. The inner rear wall of the shell mechanism is fixedly installed with a numerical control mechanism for controlling the displacement of the workpiece.

[0007] The flushing mechanism is slidably connected to the numerical control mechanism.

[0008] The shell mechanism is externally welded with an air extraction mechanism for vacuumizing the device.

[0009] The utility model further sets up: the shell mechanism includes vacuum chamber, all the bottom four corners of vacuum chamber are welded with support foot, the front end of vacuum chamber is hinged with sealed door, the inside bottom wall of vacuum chamber is fixed with the flush pool, the flush pool is connected with the drain pipe, the inside bottom wall of vacuum chamber is still fixed with the soaking pool.

[0010] Through the above technical scheme, the vacuum chamber main part is alloy material, the support foot can lift the bottom of the vacuum chamber from the ground, avoid its bottom directly with dust, contact, soak pool, flush pool still fixed with the drain pipe and liquid injection pipe, soak pool can fill caustic solution.

[0011] The utility model further sets up: the welding mechanism includes the power box of being fixed to the top of vacuum chamber, the wire is fixedly connected on the power box, the wire's end is fixedly connected with electron gun.

[0012] Through the above technical scheme, the power box is internally provided with a boost module, and the power box can supply power to the electron gun through the wire. When the electron gun is powered on, it will shoot down the electron beam.

[0013] The utility model further sets up: the numerical control mechanism includes the linear motor one of being fixed to the inside back wall of vacuum chamber, the slide table one is slidably connected on the linear motor one, the slide table one is fixed with linear motor two.

[0014] Through the above technical scheme, the linear motor one can drive the slide table one to slide in the horizontal direction, so that the linear motor two can slide horizontally. The linear motor two is a double slide table asynchronous motor, which can independently control the movement of the slide table two and the slide table three.

[0015] The utility model further sets up: the slide table two is slidably connected on the linear motor two, the mounting bracket is fixed on the slide table two, and the clamp tool is fixed on the mounting bracket.

[0016] By the technical scheme, the titanium alloy closing box type member to be welded can be fixed on the clamp tool, the sliding table two can slide along the direction of the linear motor two, so as to drive the mounting frame and the clamp tool to ascend or descend, before welding by using the device, the linear motor one and the linear motor two drive the mounting frame and the clamp tool to move into the soaking pool to soak for a certain time, at this time, the caustic solution in the soaking pool can effectively remove the oxides and hydrocarbons on the surface of the titanium alloy workpiece, so that the existence of the oxides and hydrocarbons does not destroy the normal crystalline structure of the weld metal, and the mounting frame and the clamp tool are made of nickel-chromium alloy or other alloy materials which can effectively resist the caustic solution.

[0017] The utility model further provides: the flushing mechanism includes the sliding table three of slidingly arranged on linear motor two, fixed with the connecting pipe on the sliding table three, the bottom end of connecting pipe is connected with the bifurcated pipe, fixed with a plurality of flushing nozzles on the bifurcated pipe, the top end of connecting pipe is sealed and connected with infusion hose.

[0018] Through the technical scheme, the infusion hose is connected with the pressure flushing liquid source, the flushing liquid can be acetone or alcohol-containing solvent, after the caustic solution soaking and cleaning of the workpiece by the device, the linear motor one and the linear motor two control the sliding table two and the sliding table three to move into the flushing pool, at this time, the pressure flushing liquid source is opened, the flushing liquid flushes the workpiece through the infusion hose, the connecting pipe, the bifurcated pipe and the flushing nozzle, so as to remove the residual compounds and the caustic solution, a plurality of flushing nozzles are arranged on the two branches of the bifurcated pipe, so that the flushing mechanism can efficiently flush the workpiece from multiple angles, and the liquid generated by flushing flows into the flushing pool and is discharged to the specified storage container through the drain pipe.

[0019] The utility model further provides: the air extraction mechanism includes the mounting table of welding fixed in the vacuum chamber outside, welding fixed with the reinforcing inclined support on the mounting table, still fixed with the vacuum pump on the mounting table, sealed and connected with the air extraction pipe on the vacuum pump, still set up the exhaust port on the vacuum pump.

[0020] Through the technical scheme, the vacuum pump (503) can extract the air in the device through the air extraction pipe (504), so that the device is hollow, and the formation of the oxide layer on the surface of the titanium alloy before and during welding is avoided, which pollutes the welding pool, resulting in poor welding quality and weak weld.

[0021] The utility model has the advantages of the following:

[0022] 1. The utility model discloses a shell mechanism, numerical control mechanism and flushing mechanism are set up, so that the device can clean the oxides and hydrocarbons of titanium alloy workpiece before welding, so as to ensure that the weld metal crystallizes normally, avoid impurities, and improve the welding quality.

[0023] 2. The utility model discloses through the setting of numerical control mechanism, flushing mechanism and air extraction mechanism, make the whole process of work piece cleaning, flushing and welding can be carried out under the vacuum environment, avoid the oxide of titanium alloy work piece surface to form in the transportation transfer process, further improve the work piece purity and welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the perspective view of the utility model;

[0025] Figure 2 It is the shell mechanism structure diagram of the utility model;

[0026] Figure 3 It is the welding mechanism structure diagram of the utility model;

[0027] Figure 4 It is the numerical control mechanism and flushing mechanism structure diagram of the utility model;

[0028] Figure 5 It is the air extraction mechanism structure diagram of the utility model.

[0029] In the drawing: 1, shell mechanism;101, vacuum chamber;102, support foot;103, sealing door;104, flushing pool;105, liquid discharge pipe;106, soaking pool;2, welding mechanism;201, power supply box;202, wire;203, electron gun;3, numerical control mechanism;301, linear motor one;302, sliding table one;303, linear motor two;304, sliding table two;305, mounting bracket;306, clamp tool;4, flushing mechanism;401, sliding table three;402, connecting pipe;403, bifurcated pipe;404, flushing spray head;405, liquid transfer hose;5, air extraction mechanism;501, mounting table;502, strengthening inclined support;503, vacuum pump;504, air extraction pipe;505, exhaust port. DETAILED DESCRIPTION

[0030] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is more clearly and explicitly defined.

[0031] Please refer to Figures 1-5The utility model provides a titanium alloy closing box electronic beam welding device, including shell mechanism 1 and numerical control mechanism 3, shell mechanism 1 includes vacuum chamber 101, and the bottom end four corners of vacuum chamber 101 are all welded fixed with support foot 102, and the front end of vacuum chamber 101 is hinged with sealing door 103, and the inside bottom wall of vacuum chamber 101 is fixed with flushing pool 104, and flushing pool 104 is connected with drain pipe 105, and the inside bottom wall of vacuum chamber 101 is also fixed with soaking pool 106, and the main body of vacuum chamber 101 is alloy material, and support foot 102 can lift the bottom of vacuum chamber 101 from the ground, avoids the bottom to be in direct contact with dust, accumulated water and the like, and flushing pool 104 is also fixed with liquid injection pipe, and soaking pool 106 is also connected with drain pipe 105 and liquid injection pipe, and soaking pool 106 can be filled with caustic solution, and the top of shell mechanism 1 is fixedly installed with welding mechanism 2 for generating electron beam, and welding mechanism 2 includes power box 201 fixed to the top of vacuum chamber 101, and power box 201 is fixedly connected with wire 202, and the tail end of wire 202 is fixedly connected with electron gun 203, and power box 201 is provided with boost module inside, and power box 201 can power electron gun 203 through wire 202, and electron gun 203 will emit electron beam downward when electrified.

[0032] As shown in Figure 1 and Figure 4 , the rear wall of shell mechanism 1 is fixedly installed with numerical control mechanism 3 for controlling the displacement of workpiece, and numerical control mechanism 3 includes linear motor one 301 fixed to the rear wall inside vacuum chamber 101, and linear motor one 301 is slidingly connected with sliding table one 302, and sliding table one 302 is fixed with linear motor two 303, and linear motor two 303 is slidingly connected with sliding table two 304, and sliding table two 304 is fixed with mounting bracket 305, and mounting bracket 305 is fixed with clamp tooling 306, and linear motor one 301 can drive sliding table one 302 to slide in horizontal direction, so that linear motor two 303 can slide horizontally, and linear motor two 303 is double-sliding-table asynchronous motor, which can independently control the movement of sliding table two 304 and sliding table three 401 respectively, and clamp tooling 306 can be fixed with titanium alloy closing box to be welded, and sliding table two 304 can slide along the direction of linear motor two 303, so as to drive mounting bracket 305 and clamp tooling 306 to rise or fall, when using the device to weld, linear motor one 301 and linear motor two 303 drive mounting bracket 305 and clamp tooling 306 to move into soaking pool 106 and soak for a certain time, at this time, the caustic solution in soaking pool 106 can effectively remove the oxides and hydrocarbons on the surface of titanium alloy workpiece, so as to avoid the oxides and hydrocarbons to destroy the normal crystalline structure of weld metal, and mounting bracket 305 and clamp tooling 306 are nickel-chromium alloy or other alloy materials that can effectively resist caustic solution.

[0033] As shown in Figure 1 andFigure 4 As shown, the numerical control mechanism 3 is slidably connected with the flushing mechanism 4, the flushing mechanism 4 comprises a sliding table three 401 slidably arranged on the linear motor two 303, the sliding table three 401 is fixedly connected with a connecting pipe 402, the bottom end of the connecting pipe 402 is fixedly connected with a bifurcated pipe 403, the bifurcated pipe 403 is fixedly connected with a plurality of flushing nozzles 404, the top end of the connecting pipe 402 is sealingly connected with a transfusion hose 405, the transfusion hose 405 is connected with a pressure flushing liquid source, the flushing liquid can be acetone or an alcohol-containing solvent, when the device performs caustic solution immersion cleaning on the workpiece, the linear motor one 301 and the linear motor two 303 control the sliding table two 304 and the sliding table three 401 to move into the flushing pool 104, at this time, the pressure flushing liquid source is opened, the flushing liquid flushes the workpiece through the transfusion hose 405, the connecting pipe 402, the bifurcated pipe 403 and the flushing nozzle 404, so as to remove the residual compounds and the caustic solution, a plurality of flushing nozzles 404 are arranged on the two branches of the bifurcated pipe 403, so that the flushing mechanism 4 can efficiently flush the workpiece from multiple angles, the liquid generated by flushing flows into the flushing pool 104 and is discharged into a designated storage container through the drain pipe 105.

[0034] As shown in Figure 1 And Figure 5 As shown, the shell mechanism 1 is further welded with the air extraction mechanism 5 for vacuumizing the device, the air extraction mechanism 5 comprises a mounting table 501 welded on the outside of the vacuum chamber 101, the mounting table 501 is welded with a reinforcing inclined support 502, the mounting table 501 is further fixed with a vacuum pump 503, the vacuum pump 503 is sealingly connected with an air extraction pipe 504, the vacuum pump 503 is further provided with an exhaust port 505, the vacuum pump 503 can extract the air in the device through the air extraction pipe 504, so as to make the device hollow, thereby avoiding the formation of an oxide layer on the surface of the titanium alloy before and during welding to pollute the welding pool, resulting in poor welding quality and weak welds.

[0035] In use, the staff first fixes the titanium alloy closing box type piece on the clamp tool 306, then closes the sealing door 103, starts the device through the control panel on the shell mechanism 1, at this time, the air extraction mechanism 5 extracts the inside of the device to vacuum, the numerical control mechanism 3 immerses the workpiece in the immersion pool 106 for cleaning, then moves the workpiece to the flushing pool 104 for cleaning through the flushing mechanism 4, finally, the numerical control mechanism 3 moves the workpiece below the welding mechanism 2 and cooperates with the electron gun 203 to perform electron beam welding on the workpiece.

[0036] The above is only an embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process conversion according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An electron beam welding device for titanium alloy box-shaped parts, comprising a housing mechanism (1) and a CNC mechanism (3), characterized in that: The top of the housing mechanism (1) is fixedly installed with a welding mechanism (2) for generating an electron beam, and the inner rear wall of the housing mechanism (1) is fixedly installed with a CNC mechanism (3) for controlling the displacement of the workpiece. A flushing mechanism (4) is slidably connected to the numerical control mechanism (3); An air extraction mechanism (5) for evacuating the device is also welded and fixed to the outside of the housing mechanism (1).

2. The electron beam welding device for titanium alloy box-shaped parts according to claim 1, characterized in that: The housing mechanism (1) includes a vacuum chamber (101), and support feet (102) are welded and fixed at the four corners of the bottom of the vacuum chamber (101). A sealing door (103) is hinged to the front end of the vacuum chamber (101). A rinsing pool (104) is fixed to the inner bottom wall of the vacuum chamber (101). A drain pipe (105) is connected to the rinsing pool (104). An immersion pool (106) is also fixed to the inner bottom wall of the vacuum chamber (101).

3. The electron beam welding device for titanium alloy box-shaped parts according to claim 2, characterized in that: The welding mechanism (2) includes a power supply box (201) fixed to the top of the vacuum chamber (101), and a wire (202) is fixedly connected to the power supply box (201). An electron gun (203) is fixedly connected to the end of the wire (202).

4. The electron beam welding device for titanium alloy box-shaped parts according to claim 2, characterized in that: The numerical control mechanism (3) includes a linear motor (301) fixed to the rear wall inside the vacuum chamber (101), a slide table (302) slidably connected to the linear motor (301), and a linear motor (303) fixed on the slide table (302).

5. The electron beam welding device for titanium alloy box-shaped parts according to claim 4, characterized in that: The linear motor 2 (303) is slidably connected to the slide table 2 (304), the slide table 2 (304) is fixed with the mounting bracket (305), and the mounting bracket (305) is fixed with the fixture (306).

6. The electron beam welding device for titanium alloy box-shaped parts according to claim 4, characterized in that: The flushing mechanism (4) includes a slide table (401) slidably mounted on a linear motor (303), a connecting pipe (402) fixed on the slide table (401), a branch pipe (403) fixedly connected to the bottom end of the connecting pipe (402), a plurality of flushing nozzles (404) fixed on the branch pipe (403), and an infusion hose (405) sealed to the top end of the connecting pipe (402).

7. The electron beam welding device for titanium alloy box-shaped parts according to claim 2, characterized in that: The air extraction mechanism (5) includes a mounting platform (501) welded and fixed to the outside of the vacuum chamber (101). A reinforcing diagonal brace (502) is welded and fixed on the mounting platform (501). A vacuum pump (503) is also fixed on the mounting platform (501). An air extraction pipe (504) is sealed and connected to the vacuum pump (503). An exhaust port (505) is also provided on the vacuum pump (503).

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