Laser cladding device with wire surface treatment device and system thereof

Abstract

The present invention discloses a laser cladding device with a wire surface treatment device and a system thereof, comprising an air compressor, a coating material box and a coating coating box, wherein the air compressor is connected to the coating material box through a high-pressure gas channel, the coating material box is connected to the coating coating box through a coating material transmission channel, and the coating coating box is arranged in the laser cladding device; the coating material box stores black coating material. The present invention can add a black coating to the surface of the wire, and when the surface of the wire entering the molten pool has a black coating, heat radiation is generated when the laser acts on the molten pool, and at this time, the wire will absorb more energy when it melts, and the laser energy utilization rate is high, which can fully melt the wire, effectively form a cladding layer and form parts.

Description

Technical Field

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

[0002] Laser cladding (also known as laser melting or laser cladding) is a new surface modification technology. It forms a metallurgically bonded cladding layer on the surface of the base by adding cladding material to the surface of the base material and using a high-energy-density laser beam to melt it together with a thin layer on the surface of the base material.

[0003] Characteristics of laser cladding: The cladding layer has low dilution but strong bonding force, and is metallurgically bonded to the substrate, which can significantly improve the wear resistance, corrosion resistance, heat resistance, oxidation resistance or electrical properties of the substrate surface, thereby achieving the purpose of surface modification or repair, meeting the specific performance requirements of the material surface and saving a lot of material costs. Compared with traditional surface treatment technologies such as surfacing, thermal spraying, and electroplating, it has many advantages, such as a wide range of applicable material systems, controllable cladding layer dilution rate, metallurgical bonding between the cladding layer and the substrate, small thermal deformation of the substrate, and easy automation of the process.

[0004] From the current application of laser cladding, it is mainly used in three aspects: 1. Surface modification of materials, such as gas turbine blades, rollers, gears, etc. 2. Surface repair of products, such as rotors, molds, etc. 3. Laser additive manufacturing, through synchronous powder feeding or wire feeding, layer-by-layer laser cladding is performed to obtain parts with three-dimensional structures. Since the 1980s, laser cladding technology has received widespread attention at home and abroad and has been applied in many industrial fields.

[0005] In the prior art, during the laser wire cladding process, the surface of the wire is relatively bright. When the laser beam irradiates the surface of the wire, due to its high surface reflectivity, the laser energy utilization rate is low, and the wire is sometimes unable to be fully melted, making it impossible to effectively perform laser cladding forming or part forming. Summary of the invention

[0006] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a laser cladding device and a system thereof with a wire surface treatment device. The wire surface treatment device of the device and its system can coat the wire surface with a layer of black coating, reduce the reflectivity of the wire, and increase the utilization rate of laser energy.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A laser cladding device with a wire surface treatment device comprises an air compressor, a coating material box and a coating application box, wherein the air compressor is connected to the coating material box via a high-pressure gas channel, the coating material box is connected to the coating application box via a coating material transmission channel, and the coating application box is arranged in the laser cladding device; black coating material is stored in the coating material box.

[0009] Furthermore, a wire inlet is provided at the wire inlet end of the coating coating box, a wire nozzle is provided at the wire outlet end of the coating coating box, and the wire nozzle is located above the laser cladding device.

[0010] A laser cladding system of the present invention comprises a wire feeder, wherein the wire fed by the wire feeder enters the coating coating box from the wire access port, and then the coated wire is sprayed out from the wire nozzle, and the coated wire is connected to the wire inlet of the laser cladding device.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The laser cladding device and system with a wire surface treatment device of the present invention can add a black coating on the surface of the wire. When the surface of the wire entering the molten pool has a black coating, thermal radiation is generated when the laser acts on the molten pool. At this time, the wire will absorb more energy when it melts. The laser energy utilization rate is high, and the wire can be fully melted to effectively form a cladding layer and part forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the system architecture of the present invention. DETAILED DESCRIPTION

[0014] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0015] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] See also Figure 1 As shown, a laser cladding device with a wire surface treatment device in this embodiment includes an air compressor 1 for high-pressure gas, a coating material box 2 storing a black coating material 202, and a coating coating box 3, wherein the air compressor 1 is connected to the coating material box 2 via a high-pressure gas channel 101, the coating material box 2 is connected to the coating coating box 3 via a coating material transmission channel 201, and the coating coating box 3 is arranged in the laser cladding device 4.

[0017] Furthermore, a wire inlet 301 is provided at the wire inlet end of the coating box 3 , and a wire nozzle 302 is provided at the wire outlet end of the coating box 3 . The wire nozzle 302 is located above the laser cladding device 4 .

[0018] Furthermore, the laser cladding system of this embodiment includes a wire feeder 5, and the wire 501 fed by the wire feeder 5 enters the coating coating box 3 from the wire inlet 301, and then the coating wire 502 is sprayed out from the wire nozzle 302, and the coating wire 502 is connected to the wire inlet of the laser cladding device 4.

[0019] The high-pressure air generated by the air compressor 1 is transmitted to the coating material box 2 through the high-pressure gas channel 101. Under the action of the high-pressure gas, the black coating material 202 stored in the coating material box 2 is injected into the coating coating box 3 through the coating material transmission channel 201. When the wire 501 passes through the coating coating box 3, the silvery-white material with high reflectivity can be coated with black material to obtain the coated wire 502. The laser beam 401 is split by a prism and a reflector to obtain three light beams 402. The three light beams 402 are projected onto the substrate 6 located above the workbench 7 to form a light spot. The light spot envelops the coated wire 502 and is clad at the molten pool 601. After the surface of the silvery-white material becomes a black surface, it is effectively avoided that the high reflectivity of the wire during the cladding process leads to low laser energy utilization and large energy loss, resulting in the inability to form the cladding layer.

[0020] The basic structure and working principle of the laser cladding device involved in this embodiment can be found in the published invention patent: A three-beam silk-powder mixed laser cladding nozzle publication number: CN113215562A.

[0021] Finally, it should be noted that the above is only 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser cladding system with a wire surface treatment device, comprising a laser cladding device (4) and a wire feeder (5), characterized in that: It also comprises an air compressor (1), a coating material box (2) and a coating application box (3), wherein the air compressor (1) is connected to the coating material box (2) via a high-pressure gas channel (101), the coating material box (2) is connected to the coating application box (3) via a coating material transmission channel (201), and the coating application box (3) is arranged above the laser cladding device (4); the coating material box (2) stores black coating material (202); The coating box (3) is provided with a wire inlet (301) at the wire inlet end, and a wire nozzle (302) is provided at the wire outlet end of the coating box (3), and the wire nozzle (302) is located above the laser cladding device (4); The wire (501) fed by the wire feeder (5) enters the coating coating box (3) from the wire inlet (301), and then the coated wire (502) is sprayed out from the wire nozzle (302), and the coated wire (502) is connected to the wire inlet of the laser cladding device (4).

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