High-power laser large-current arc coaxial hybrid welding plume isolation circular ring

Abstract

The utility model relates to the technical field of laser welding, in particular to a high-power laser large-current arc coaxial hybrid welding plume isolation circular ring which comprises a plume isolation circular ring body, the plume isolation circular ring body can be placed on a hollow electrode TIG welding torch, a through hole is formed in the center of the plume isolation circular ring body, and a through hole is formed in the center of the plume isolation circular ring body. One surface of the plume isolation circular ring body is provided with the high-temperature-resistant light-transmitting glass, and the high-temperature-resistant light-transmitting glass can cover the through hole, so that the plume isolation circular ring structure suitable for the hollow electrode TIG welding torch is provided, and the plume isolation circular ring structure can prevent welding plume from entering a hollow electrode cavity and depositing in the hollow electrode cavity; according to the invention, laser beam energy transmission is blocked, the laser beam energy is absorbed to cause overheat burning loss and fracture due to temperature rise of the electrode, welding plumes, welding smoke and splashes can be isolated, the effects of ventilating and dispersing the welding plumes can also be achieved, and the welding effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a high-power laser large-current arc coaxial composite welding plume isolation ring. Background Technique

[0002] The high-power laser arc coaxial composite heat source has good symmetry, high torch flexibility, better spatial accessibility, strong heat source penetration ability, and high welding efficiency. It is a high-quality and efficient new welding technology. However, high-power lasers also generate strong welding plumes, which have an obvious impact on the energy transmission of the laser beam. The higher the laser power, the larger the volume and density of the plume, and the greater the impact on the laser beam energy. Laser hollow electrode coaxial composite welding is a common coaxial composite method. In coaxial composite welding, the laser beam energy will be transmitted along the axis of the arc, and the welding plume is usually directly above the laser action point. Therefore, the impact of the welding plume on the laser beam energy in coaxial composite welding will be greater than that in the off-axis form of laser arc composite welding. Some studies have shown that in laser hollow electrode coaxial composite welding, when other conditions such as welding current and shielding gas flow remain unchanged, as the laser power increases, the impact of the welding plume on the laser beam energy increases, and the laser power has an upper critical value. Once the laser power exceeds the upper critical value, the laser beam energy is severely blocked by the welding plume, the plume volume expands violently, the arc plasma becomes unstable, the welding stability drops sharply, and the welding process cannot be completed. It can be seen that the control of the welding plume in coaxial composite welding is the key to this technology.

[0003] In hollow electrode TIG welding, if the welding current is too large, relatively serious welding fumes and spatter will be generated. The welding fumes enter the inside of the hollow electrode and deposit. On the one hand, the welding fumes may burn in a high-temperature environment, causing damage to the electrode. On the other hand, it will affect the electrical conductivity of the electrode, and the deposits may fall into the weld during the welding process, contaminating the weld. The welding spatter enters the electrode interior, contaminating the electrode, and affecting the service life of the electrode and the quality of the weld. Content of the Utility Model

[0004] The utility model aims at the above problems and provides a high-power laser large-current arc coaxial composite welding plume isolation ring.

[0005] The technical solution adopted is a high-power laser large-current arc coaxial composite welding plume isolation ring, which includes a plume isolation ring body. A perforation is arranged at the center of the plume isolation ring body. A high-temperature resistant light-transmitting glass is arranged on one side of the plume isolation ring body, and the high-temperature resistant light-transmitting glass can cover the perforation.

[0006] Optionally, the perforation is circular, and the center of the perforation coincides with the center of the plume isolation ring body.

[0007] Optionally, the Yuhui isolation ring body is also provided with breathable circular through-holes, and the breathable circular through-holes are arranged around the perforation.

[0008] Optionally, the centers of the breathable circular through-holes arranged in a surrounding manner coincide with the center of the perforation.

[0009] Optionally, there are a total of 12 breathable circular through-holes.

[0010] Optionally, a breathable dust-proof mechanism is arranged in the breathable circular through-holes.

[0011] Optionally, the breathable dust-proof mechanism is a breathable filter screen, and the breathable filter screen is made of carbon fiber textile.

[0012] Optionally, a frustum is arranged on the perforation, and along the laser transmission direction, the frustum is located at the upper part of the perforation, and the high-temperature resistant light-transmitting glass is embedded in the frustum.

[0013] Optionally, the diameter of the Yuhui isolation ring body is 22 mm, the diameter of the perforation is 8 mm, the diameter of the frustum is 12.5 mm, the diameter of the high-temperature resistant light-transmitting glass is 12 mm, and the diameter of the breathable circular through-hole is 2 mm.

[0014] The advantages of the present utility model include:

[0015] 1. The present application provides a Yuhui isolation ring structure applicable to a hollow electrode TIG torch. The Yuhui isolation ring structure can prevent welding plume from entering the hollow electrode cavity, depositing in the hollow electrode cavity, blocking the energy transmission of the laser beam, and absorbing the energy of the laser beam, resulting in overheating, burning, and cracking of the electrode due to increased temperature.

[0016] 2. On the other hand, breathable circular through-holes are arranged on the Yuhui isolation ring structure, which can pass a certain flow of protective gas into the hollow electrode cavity. The protective gas can flow out through the breathable circular through-holes of the Yuhui isolation ring, and can disperse the plume accumulated at the tungsten electrode tip. Therefore, the structure provided by the present application can not only isolate welding plume, welding fume, and spatter, but also play a role in ventilating and dispersing welding plume, greatly improving the welding effect.

[0017] 3. In high-current hollow electrode TIG welding, the isolation ring can play a role in isolating welding fume and spatter, preventing fume from contaminating the electrode and depositing inside the electrode, preventing spatter from entering the inside of the electrode, and improving the electrical conductivity and service life of the electrode. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of a Yuhui isolation ring structure for high-power laser high-current arc coaxial composite welding;

[0019] Figure 2Schematic diagram of the three-dimensional structure of the plume isolation ring for high-power laser and high-current arc coaxial composite welding

[0020] Figure 3 Schematic diagram of the cross-sectional structure of the plume isolation ring for high-power laser and high-current arc coaxial composite welding

[0021] Figure 4 Installation position diagram of the plume isolation ring in the torch

[0022] Among them, the reference numerals: 1 is the main body of the plume isolation ring, 2 is the high-temperature resistant light-transmitting glass, 3 is the air-permeable filter screen, 4 is the air-permeable round through-hole, 5 is the perforation, 10 is the laser beam, 11 is the electrode, 12 is the electrode tip, 13 is the gasket, 14 is the spacer ring, and 15 is the arc Detailed implementation manners

[0023] The following uses specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other

[0024] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex

[0025] As Figures 1 to 3 shown, a plume isolation ring for high-power laser and high-current arc coaxial composite welding includes the main body 1 of the plume isolation ring. The main body 1 of the plume isolation ring can be placed on a hollow electrode TIG torch. A perforation 5 is provided in the center of the main body 1 of the plume isolation ring. A high-temperature resistant light-transmitting glass 2 is provided on one side of the main body 1 of the plume isolation ring, and the high-temperature resistant light-transmitting glass 2 can cover the perforation 5

[0026] The purpose of such a design is to provide a plume isolation ring structure applicable to a hollow electrode TIG torch. The plume isolation ring structure can prevent the welding plume from entering the hollow electrode cavity, depositing in the hollow electrode cavity, blocking the energy transmission of the laser beam, and absorbing the energy of the laser beam, resulting in overheating and burnout and rupture of the electrode due to temperature rise

[0027] In this embodiment, the perforation 5 is circular, and the center of the perforation 5 coincides with the center of the plume isolation ring body 1.

[0028] The purpose of such a design is that by setting the center of the perforation to coincide with the center of the plume isolation ring body, the overall structure has good symmetry.

[0029] In this embodiment, the plume isolation ring body 1 is further provided with a breathable circular through-hole 4, and the breathable circular through-hole 4 is arranged around the perforation 5, and the center of the surrounding breathable circular through-hole 4 coincides with the center of the perforation 5.

[0030] The purpose of such a design is that by providing a breathable circular through-hole in the plume isolation ring structure, a certain flow rate of protective gas can be introduced into the hollow electrode cavity. The protective gas can flow out through the breathable circular through-hole of the plume isolation ring, which can disperse the plume accumulated at the tungsten electrode tip. Therefore, the structure provided by this application can not only isolate the welding plume, welding fumes and spatter, but also play a role in ventilating and dispersing the welding plume, greatly improving the welding effect.

[0031] In this embodiment, a breathable and dust-proof mechanism is arranged in the breathable circular through-hole 4. The breathable and dust-proof mechanism is a breathable filter screen 3, and the breathable filter screen 3 is made of carbon fiber textile.

[0032] The purpose of such a design is that when the welding current exceeds 200A, a large amount of welding fumes will be generated. The isolation ring can prevent dust and spatter from entering the hollow electrode through the provided breathable filter screen while ensuring that the protective gas can flow out through the breathable circular through-hole of the plume isolation ring.

[0033] It should be noted that the high-power laser mentioned in this embodiment generally refers to a laser with a power exceeding 1000W, and the large current refers to a welding current exceeding 200A. The material of the high-temperature heat-resistant transparent glass is a prior art. Those skilled in the art can select appropriate raw materials to prepare it when implementing this solution, and the change of raw materials will not cause a significant change in the technical solution effect provided by this application.

[0034] In this embodiment, a specific setting method of the high-temperature heat-resistant transparent glass and the plume isolation ring body is provided. A frustum is arranged on the perforation 5, and along the laser transmission direction, the frustum is located above the perforation 5, and the high-temperature heat-resistant transparent glass 2 is embedded in the frustum, as Figure 3 shown. At the same time, the diameter b2 of the plume isolation ring body 1 is 22mm, the diameter b1 of the perforation 5 is 8mm, the diameter b4 of the frustum is 12.5mm, the diameter a1 of the high-temperature heat-resistant transparent glass 2 is 12mm, and the diameter b3 of the breathable circular through-hole 4 is 2mm.

[0035] As Figure 4As shown, a specific installation structure of the Yuhui isolation ring body is provided. The hollow electrode TIG torch includes an electrode 11 and an electrode tip 12, and the electrode 11 and the electrode tip 12 are detachably connected by a thread. The Yuhui isolation ring body 1 is arranged between the electrode 11 and the electrode tip 12, and a gasket 13 and a spacer ring 14 are arranged thereon. The laser beam 10 passes through the high-temperature resistant light-transmitting glass 2, causing an arc 15 to be generated at the electrode tip 12.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A plume isolation ring for high-power laser and high-current arc coaxial composite welding, comprising a plume isolation ring body (1), characterized in that, A perforation (5) is provided at the center of the Yuhui isolation ring body (1). A high-temperature resistant light-transmitting glass (2) is provided on one side of the Yuhui isolation ring body (1), and the high-temperature resistant light-transmitting glass (2) can cover the perforation (5).

2. A plume isolation ring for high-power laser and high-current arc coaxial composite welding according to claim 1, wherein, The perforation (5) is circular, and the center of the perforation (5) coincides with the center of the Yuhui isolation ring body (1).

3. A high-power laser large-current arc coaxial composite welding plume isolation ring according to claim 2, characterized in that, An air-permeable circular through-hole (4) is further provided on the Yuhui isolation ring body (1), and the air-permeable circular through-hole (4) is arranged around the perforation (5).

4. A high-power laser high-current arc coaxial composite welding plume isolation ring according to claim 3, characterized in that, The center of the circumferentially arranged air-permeable circular through-hole (4) coincides with the center of the perforation (5).

5. A plume isolation ring for high-power laser and high-current arc coaxial composite welding according to claim 3, characterized in that, There are a total of 12 air-permeable circular through-holes (4).

6. A high-power laser large-current arc coaxial composite welding plume isolation ring according to claim 3, characterized in that, An air-permeable and dust-proof mechanism is arranged in the air-permeable circular through-hole (4).

7. A plume isolation ring for high-power laser and high-current arc coaxial composite welding according to claim 6, characterized in that, The air-permeable and dust-proof mechanism is an air-permeable filter screen (3), and the air-permeable filter screen (3) is made of carbon fiber textile.

8. A high-power laser large-current arc coaxial composite welding plume isolation ring according to claim 3, characterized in that, A frustum is provided on the perforation (5). Along the laser transmission direction, the frustum is located above the perforation (5), and the high-temperature resistant light-transmitting glass (2) is embedded in the frustum.

9. A plume isolation ring for high-power laser and high-current arc coaxial composite welding according to claim 8, characterized in that, The diameter of the Yuhui isolation ring body (1) is 22 mm, the diameter of the perforation (5) is 8 mm, the diameter of the frustum is 12.5 mm, the diameter of the high-temperature resistant light-transmitting glass (2) is 12 mm, and the diameter of the air-permeable circular through-hole (4) is 2 mm.

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