Laser cladding nozzle

Abstract

The utility model discloses a laser cladding spray head which comprises a spray head body, the spray head body comprises a center laser head, a first outer sleeve is installed on the outer side of the center laser head, a second outer sleeve is installed on the outer side of the first outer sleeve, and a sealing ring is fixed to the top of the center laser head. The top end of the first outer sleeve abuts against a sealing ring on the outer wall of the center laser head, the bottom end of the first outer sleeve abuts against the inner side of the second outer sleeve, a laser channel is formed in the center of the interior of the center laser head, and a heat dissipation channel is formed between the outer wall of the center laser head and the inner wall of the first outer sleeve. Powder channels are evenly formed between the outer wall of the first outer sleeve and the inner wall of the second outer sleeve, one side of the top of the first outer sleeve is connected with a cooling water inlet pipe connector, the other side of the top of the first outer sleeve is connected with a cooling water outlet pipe connector, and the top of the second outer sleeve is connected with a powder leading-in connector. And the plurality of powder channels are circumferentially arranged around the central axis of the central laser head.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cladding, and in particular relates to a laser cladding nozzle. Background Art

[0002] Laser cladding technology is a technology that uses a high-energy-density laser beam as a heat source to rapidly melt metal powder or alloy powder with the surface of a substrate to form a cladding layer that is metallurgically bonded to the substrate, thereby achieving the goal of improving the surface hardness, wear resistance, corrosion resistance and other properties of the material. Among the existing laser cladding technologies, split laser cladding nozzles are widely used because of their convenient replacement of components. However, this type of nozzle has problems such as complex accessory structure, high processing difficulty and troublesome assembly. Specifically, the existing split laser cladding nozzle is usually composed of multiple components. During the assembly process, the components need to be precisely matched, the assembly steps are cumbersome and the operation is troublesome. Therefore, the utility model proposes a laser cladding nozzle, which aims to reduce the complexity of the accessory structure, facilitate processing and facilitate later assembly.

[0003] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser cladding nozzle, comprising a nozzle body, the nozzle body comprising a central laser head, a first outer sleeve installed on the outside of the central laser head, a second outer sleeve installed on the outside of the first outer sleeve, a sealing ring fixed on the top of the central laser head, the top of the first outer sleeve abuts on the sealing ring of the outer wall of the central laser head, the bottom of the first outer sleeve abuts on the inside of the second outer sleeve, a laser channel is provided at the center of the central laser head, a heat dissipation channel is provided between the outer wall of the central laser head and the inner wall of the first outer sleeve, powder channels are evenly opened between the outer wall of the first outer sleeve and the inner wall of the second outer sleeve, a cooling water inlet pipe interface is connected to one side of the top of the first outer sleeve, a cooling water outlet pipe interface is connected to the other side of the top of the first outer sleeve, and a powder inlet interface is connected to the top of the second outer sleeve.

[0005] As a preferred technical solution of the present invention, the plurality of powder channels are arranged in a circle around the central axis of the central laser head.

[0006] As a preferred technical solution of the present invention, there is a one-to-one correspondence between the powder introduction interface and the powder channel.

[0007] As a preferred technical solution of the present invention, the first outer sleeve is sleeved on the outside of the central laser head, and the top of the first outer sleeve and the outer wall of the central laser head are connected by threads.

[0008] As a preferred technical solution of the present invention, the second outer sleeve is sleeved on the outside of the first outer sleeve, and the top of the second outer sleeve and the outer wall of the first outer sleeve are connected by threads.

[0009] As a preferred technical solution of the present invention, high-temperature resistant sealing gaskets are fixed to the abutting surfaces of the first outer sleeve and the second outer sleeve, as well as the abutting surface between the top end of the first outer sleeve and the sealing ring.

[0010] Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts a split structural design, and by configuring two outer jackets on the periphery of the central laser head, heat dissipation channels and powder channels are formed, thereby achieving structural simplification. This design allows the cavity forming the channel to be directly exposed to the outside of the inner wall of the jacket, facilitating direct grooving during processing, significantly reducing the processing difficulty compared to the internal hole slot design in the prior art. In addition, this structure facilitates rapid disassembly and assembly, optimizing the assembly process. The heat dissipation channel effectively cools the central laser head through circulating cooling water, ensuring stable operation of the laser head in high-temperature working environments and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a schematic structural diagram of the second outer jacket in the present invention;

[0013] Figure 2 This is a schematic cross-sectional view of the central laser head, the first outer shell and the second outer shell in the present invention;

[0014] In the figure: 1. Central laser head; 2. First outer sleeve; 3. Second outer sleeve; 4. Sealing ring; 5. Laser channel; 6. Heat dissipation channel; 7. Powder channel; 8. Cooling water inlet pipe interface; 9. Cooling water outlet pipe interface; 10. Powder introduction interface; 11. High-temperature resistant sealing gasket. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example

[0017] See also Figure 1-2The utility model provides the following technical solutions: a laser cladding nozzle, including a nozzle body, the nozzle body including a central laser head 1, the central laser head 1 is located in the center, and is the emission source of the laser beam, and is used to accurately focus the laser beam on the surface of the workpiece to achieve the cladding process. A first outer jacket 2 is installed on the outside of the central laser head 1, and the first outer jacket 2 plays the function of protection and heat dissipation. A second outer jacket 3 is installed on the outside of the first outer jacket 2, which is used to transport alloy or metal powder; a sealing ring 4 is fixed on the top of the central laser head 1, and the top end of the first outer jacket 2 abuts against the sealing ring 4 on the outer wall of the central laser head 1. The sealing ring 4 is used to ensure the sealing of the heat dissipation channel 6 between the central laser head 1 and the first outer jacket 2 to prevent cooling water leakage; the bottom end of the first outer jacket 2 abuts against the inside of the second outer jacket 3, and a laser channel 5 is provided at the center of the inner center of the central laser head 1. The laser channel 5 is the channel through which the laser beam passes, ensuring that the laser can be accurately emitted from the nozzle. A heat dissipation channel 6 is provided between the outer wall of the central laser head 1 and the inner wall of the first outer shell 2, which is used to transfer a cooling medium (such as cooling water) to take away the heat generated by the laser head during operation and ensure the normal operating temperature of the laser head; powder channels 7 are evenly opened between the outer wall of the first outer shell 2 and the inner wall of the second outer shell 3, and the powder channels 7 are used to transport alloy or metal powder to the laser cladding area to achieve material cladding. A cooling water inlet pipe interface 8 is connected to one side of the top of the first outer shell 2, and the cooling water inlet pipe interface 8 is used to transport cooling water to the inside of the heat dissipation channel 6 to cool the central laser head 1. A cooling water outlet pipe interface 9 is connected to the other side of the top of the first outer shell 2, and the cooling water outlet pipe interface 9 is used to discharge cooling water from the inside of the heat dissipation channel 6 to complete the cooling cycle. A powder inlet interface 10 is connected to the top of the second outer shell 3, which is used to transport alloy or metal powder into the powder channel 7 to ensure the powder supply required for the cladding process.

[0018] In order to improve material utilization and deposition efficiency while ensuring the uniformity and quality of the cladding layer, and to achieve uniform powder supply to the cladding area, reduce material waste, and help control the heat input during the cladding process, thereby optimizing the microstructure and performance of the cladding layer, in this embodiment, as a preferred technical solution of the present invention, multiple powder channels 7 are arranged in a circle around the central axis of the central laser head 1, and there is a one-to-one correspondence between the powder introduction interface 10 and the powder channel 7.

[0019] In order to facilitate and quickly fix the first outer sleeve 2, in this embodiment, as a preferred technical solution of the utility model, the first outer sleeve 2 is sleeved on the outside of the central laser head 1, and the top of the first outer sleeve 2 and the outer wall of the central laser head 1 are connected by threads.

[0020] In order to facilitate and quickly fix the second outer sleeve 3, in this embodiment, as a preferred technical solution of the utility model, the abutting surfaces of the first outer sleeve 2 and the second outer sleeve 3 and the abutting surfaces of the top of the first outer sleeve 2 and the sealing ring 4 are fixed with high-temperature resistant sealing gaskets 11.

[0021] Based on the technical solution of the present invention, the installation process is as follows: First, the first jacket 2 is placed on the outside of the central laser head 1, and the top of the first jacket 2 is connected to the top of the central laser head 1 by threading until the top of the first jacket 2 abuts against the sealing ring 4 on the outer wall of the central laser head 1. Subsequently, the second jacket 3 is placed on the outside of the first jacket 2, and the top of the second jacket 3 is connected to the bottom of the first jacket 2 by threading until the bottom of the first jacket 2 abuts against the groove inside the second jacket 3, completing the installation. During use, the laser beam is emitted through the laser channel 5 at the center of the central laser head 1, and cooling water is introduced through the cooling water inlet pipe interface 8, contacts the surface of the central laser head 1 through the heat dissipation channel 6 to remove heat, and is then discharged through the cooling water outlet pipe interface 9. The alloy or metal powder enters the powder channel 7 through the powder inlet interface 10 and is sprayed, focusing with the laser beam, and utilizing the high energy density of the laser beam to heat the alloy or metal powder and the substrate surface, thereby achieving cladding of the alloy or metal powder on the workpiece surface.

[0022] Finally, it should be noted that in the present invention, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A laser cladding nozzle, comprising a nozzle body, characterized in that: The nozzle body comprises a central laser head (1), a first outer sleeve (2) is installed on the outer side of the central laser head (1), a second outer sleeve (3) is installed on the outer side of the first outer sleeve (2), a sealing ring (4) is fixed on the top of the central laser head (1), the top of the first outer sleeve (2) abuts against the sealing ring (4) on the outer wall of the central laser head (1), the bottom of the first outer sleeve (2) abuts against the inner side of the second outer sleeve (3), a laser channel (5) is provided at the center of the central laser head (1), a heat dissipation channel (6) is provided between the outer wall of the central laser head (1) and the inner wall of the first outer sleeve (2), powder channels (7) are evenly opened between the outer wall of the first outer sleeve (2) and the inner wall of the second outer sleeve (3), one side of the top of the first outer sleeve (2) is connected to a cooling water inlet pipe interface (8), the other side of the top of the first outer sleeve (2) is connected to a cooling water outlet pipe interface (9), and the top of the second outer sleeve (3) is connected to a powder introduction interface (10).

2. A laser cladding nozzle according to claim 1, characterized in that: The plurality of powder channels (7) are arranged in a circle around the central axis of the central laser head (1).

3. The laser cladding nozzle according to claim 2, characterized in that: There is a one-to-one correspondence between the powder introduction interface (10) and the powder channel (7).

4. The laser cladding nozzle according to claim 1, characterized in that: The first outer sleeve (2) is sleeved on the outside of the central laser head (1), and the top of the first outer sleeve (2) and the outer wall of the central laser head (1) are connected via threads.

5. The laser cladding nozzle according to claim 1, characterized in that: The second outer sleeve (3) is sleeved on the outside of the first outer sleeve (2), and the top of the second outer sleeve (3) and the outer wall of the first outer sleeve (2) are connected via threads.

6. The laser cladding nozzle according to claim 1, characterized in that: High-temperature resistant sealing gaskets (11) are fixed to the abutting surfaces of the first outer sleeve (2) and the second outer sleeve (3), as well as the abutting surfaces of the top end of the first outer sleeve (2) and the sealing ring (4).

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