Short process composite ultra-high speed laser cladding processing method based on Hawking energy technology

Abstract

The present invention provides a short-process composite ultra-high-speed laser cladding processing method based on Hawke's energy technology, the method comprising: using a cladding continuous laser beam to clad the surface of a metal workpiece; at the same time or when the liquid metal in the molten pool solidifies into a new cladding layer, using a heat treatment continuous laser beam to remelt the surface of the cladding layer; the cladding material is stacked layer by layer by the cooperation of the cladding continuous laser beam and the heat treatment continuous laser beam to form an ultra-high-speed cladding layer on the surface of the metal workpiece; within a preset time after remelting, the ultra-high-speed cladding layer within the strengthening temperature range is strengthened by using Hawke's energy processing technology. The present invention can significantly improve the internal and external forming accuracy and quality of metal parts and eliminate residual stress; and can greatly reduce the subsequent processing amount and processing procedures, significantly improve production efficiency, and reduce costs and waste generation.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding, and in particular to a short-process composite ultra-high-speed laser cladding processing method based on Hawkingen technology. Background Art

[0002] At this stage, laser cladding technology is mainly used to form a functional coating on the metal surface that is different from the base material. It can effectively improve and enhance the surface properties of the base material, and comprehensively improve the surface hardness, wear resistance and corrosion resistance of parts, and has broad application prospects.

[0003] Shaft components such as hydraulic supports and offshore platform columns in the coal machinery industry have been serving in harsh working conditions for a long time. The surface of the workpiece is easily damaged by corrosion under the influence of the corrosive environment, which leads to the scrapping and failure of the entire shaft component, greatly wasting materials and increasing production costs. In industrial production, in order to save costs and increase the working time of parts, surface modification is usually used to improve the service performance of parts. Existing surface treatment methods mainly include laser cladding, electroplating and thermal spraying. Among them, laser cladding technology can produce metallurgical bonding between the cladding material and the base material compared to thermal spraying technology, and has a greater advantage in coating bonding strength. Compared with electroplating, laser cladding technology does not produce waste liquid or other harmful substances, which can greatly reduce pollution to the environment.

[0004] As an emerging surface modification technology, ultra-high-speed laser cladding has an ultra-high cladding line speed, which makes the cooling rate and coating structure during the coating preparation process significantly different from those of traditional laser cladding technology. The cladding line speed of ultra-high-speed laser cladding technology can reach 15 to 200 m / min, which is much higher than the cladding line speed of 0.1 to 7 m / min of traditional laser cladding. Based on the ultra-high cladding line speed, the laser directly heats the powder above the surface of the part, so that the powder melts in space and then falls onto the surface of the part. The heat input of the coating can be as low as 2.2 J / mm, and the coating preparation efficiency can be as high as 1.2 m / min. 2 / min or more. Its processing efficiency is 2 to 3 times higher than that of conventional laser cladding technology, and the utilization rate of powder is greatly improved, reaching more than 90%. Since the powder absorbs most of the energy of the laser, the substrate obtains less energy. While ensuring the formation of a shallow and thin molten pool, the dilution rate of the ultra-high-speed laser cladding coating is extremely small, only less than 1%. Therefore, ultra-thin and high-quality protective coatings can be prepared by ultra-high-speed laser cladding technology. By adjusting process parameters such as cladding line speed and powder feeding speed, the thickness of the ultra-high-speed laser cladding coating can be basically controlled between 25 and 200 μm, and the coating surface has a good finish (Rz <10). In practical applications, only simple grinding and polishing are required to be put into use. At present, ultra-high-speed laser cladding is considered to be the best alternative technology for electroplating process and has received widespread attention. However, the following problems are common in ultra-high-speed laser cladding: the surface roughness of the laser cladding layer is large, there are obvious overlap marks, and it needs to go through multiple processes such as turning, grinding, and polishing, resulting in serious material waste and low effective utilization rate. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology.

[0006] According to one aspect of the present invention, a short-process composite ultra-high-speed laser cladding processing method based on Hawkingen technology is provided, the method comprising:

[0007] The surface of the metal workpiece is clad by using a continuous laser beam;

[0008] At the same time or when the liquid metal in the molten pool solidifies to form a new cladding layer, the surface of the cladding layer is remelted by using a heat treatment continuous laser beam; the cladding material is stacked layer by layer by the cooperation of the cladding continuous laser beam and the heat treatment continuous laser beam, so as to form an ultra-high-speed cladding layer on the surface of the metal workpiece;

[0009] Within the preset time after remelting, the ultra-high speed cladding layer within the strengthening temperature range is strengthened using Hawking energy processing technology.

[0010] Furthermore, the surface of the metal workpiece is clad using a continuous laser beam, wherein: the metal workpiece is a rotating body, and the centers of all cross sections are on the same straight line; the metal powder used for cladding is any one of iron-based powder, nickel-based powder and cobalt-based powder, the particle size of the metal powder is 20 to 50 μm, and the sphericity is not less than 90%.

[0011] Furthermore, the use of a cladding continuous laser beam to clad the surface of a metal workpiece includes: using a coaxial powder feeding method, adjusting the focus of the cladding continuous laser beam to be 1-10 mm above the surface of the metal workpiece, and adjusting the powder feeding nozzle to be 1-2 mm above the surface of the metal workpiece.

[0012] Furthermore, the use of a continuous cladding laser beam to clad the surface of a metal workpiece includes: the metal workpiece has a rotational linear speed of 30 to 300 m / min, a laser and a powder feeder are turned on, the laser beam and the powder flow are moved along the axial direction of the metal workpiece, and the continuous cladding laser beam melts the surface of the metal workpiece substrate and the metal powder used for filling to clad the workpiece surface.

[0013] Furthermore, the surface of the cladding layer is remelted by using a heat treatment continuous laser beam, wherein the parameters of the heat treatment continuous laser beam are set to ensure that the forming speed matches the remelting speed.

[0014] Furthermore, the surface of the cladding layer is remelted by using a heat treatment continuous laser beam, wherein the laser power of the heat treatment continuous laser beam is 5% to 15% less than the laser power of the cladding continuous laser beam.

[0015] Furthermore, before strengthening the ultra-high speed cladding layer within the strengthening temperature range by using Hawke's energy processing technology, the method includes: using a CNC machine tool of ultra-high speed laser cladding processing equipment to perform rough processing on the ultra-high speed cladding layer on the surface of the metal workpiece.

[0016] Furthermore, the use of a CNC machine tool with ultra-high-speed laser cladding processing equipment to perform rough processing on the ultra-high-speed cladding layer on the surface of the metal workpiece includes: using the CNC machine tool to perform rough processing so that the surface roughness Rz of the ultra-high-speed cladding layer is 6 to 7 um, and reserving a Hawkes energy processing area of ​​0.01 to 0.05 mm.

[0017] Furthermore, the use of Hawking energy processing technology to strengthen the ultra-high speed cladding layer within the strengthening temperature range includes: fixing the Hawking energy processing equipment on a CNC machine tool, the linear speed of the Hawking energy processing equipment is 35-60m / min, and the tool speed is 0.3-0.5mm / r.

[0018] Furthermore, the cladding, remelting and Hawkes energy processing in the method form a closed-loop coupling control, including:

[0019] According to the strengthening temperature characteristics of the formed cladding layer material, a multi-laser beam composite processing temperature field model is established;

[0020] Through the performance parameters of the cladding layer after Hawking energy processing, the temperature field model of multi-laser beam composite processing is improved, so that the formed cladding layer material is in the optimal metal plastic forming temperature range after cladding-remelting-cooling;

[0021] Hawking energy processing technology is used to impact forge the cladding metal surface in the optimal metal plastic forming temperature range.

[0022] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0023] 1. The present invention realizes short-process synchronous coupling processing through dual beams. The heat treatment beam improves the surface roughness, solves the overlap mark problem, improves the forming accuracy, and eliminates internal defects such as pores in the cladding layer and poor fusion.

[0024] 2. The present invention utilizes Hawke's energy processing technology to refine the grains of the cladding layer, thereby reducing stress concentration. While improving the surface finish, the cladding layer processing surface presents compressive stress, and the fatigue performance of the cladding layer is improved, thereby improving the performance of the cladding layer. At the same time, it can overcome defects such as coarse dendrites and component segregation caused by slow solidification due to remelting.

[0025] 3. The dual-beam short-process synchronous coupling processing and Hawking energy processing technology of the present invention complement each other, significantly improving the internal and external forming accuracy and quality of metal parts and eliminating residual stress; moreover, it can greatly reduce the subsequent processing volume and processing procedures, significantly improve production efficiency, and can be directly polished after processing, which reduces costs while reducing the generation of waste, further improving production efficiency and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 A schematic diagram of a short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology according to an embodiment of the present invention;

[0028] Figure 2 The structure of the ultra-high speed cladding sample without composite processing in the embodiment of the present invention; (a) is the surface morphology, (b) is the microstructure;

[0029] Figure 3 The structure of the ultra-high speed cladding sample subjected to composite processing in an embodiment of the present invention, (a) is the surface morphology, and (b) is the microstructure.

[0030] In the figure: 1 is a continuous laser beam for cladding, 2 is a powder flow, 3 is a molten pool, 4 is an ultra-high-speed cladding layer, 5 is a working surface of a metal workpiece, 6 is a continuous laser beam for heat treatment, 7 is a remelting molten pool, and 8 is Hawken processing equipment. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, without departing from the inventive concept, several variations and improvements can also be made. These all belong to the protection scope of the present invention. In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", etc. in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0032] In order to solve the problem that the existing laser cladding layer has a large surface roughness and obvious overlap marks, and needs to go through multiple processes such as turning, grinding, and polishing, resulting in serious material waste and low effective utilization rate, the embodiment of the present invention provides a short-process composite ultra-high-speed laser cladding processing method based on Hawke's energy technology, wherein the short process refers to that cladding forming, laser heat treatment, and Hawke's energy strengthening are almost carried out at the same time, rather than completing one process before carrying out the next process. The method includes:

[0033] S1. Using a continuous cladding laser beam to clad the surface of a metal workpiece;

[0034] S2. At the same time or when the liquid metal in the molten pool solidifies to form a new cladding layer, the surface of the cladding layer is remelted by using a heat treatment continuous laser beam to form a remelted molten pool; the cladding material is stacked layer by layer by the cooperation of the cladding continuous laser beam and the heat treatment continuous laser beam to form an ultra-high-speed cladding layer on the surface of the metal workpiece;

[0035] S3. Within a preset time after remelting, the ultra-high speed cladding layer, i.e., the cladding metal surface, within the strengthening temperature, i.e., the forging temperature range, is strengthened using Hawke's energy processing technology, wherein the preset time is calculated based on: the time required for the temperature of the liquid metal to reach a temperature suitable for Hawke's energy strengthening after solidification.

[0036] The method in the embodiment of the present invention firstly forms a workpiece by stacking cladding materials layer by layer through two laser beams with different functions simultaneously and in cooperation with each other. The dual beams realize short-process synchronous coupling processing. The heat treatment beam improves the surface roughness, solves the overlap mark problem, improves the forming accuracy, and eliminates internal defects such as pores and poor fusion of the cladding layer. The surface of the cladding metal within the strengthening temperature range is impacted and turned by Hawking energy processing equipment within the preset time after the ultra-high-speed cladding processing is completed, and the surface of the cladding metal within the strengthening temperature range is strengthened. Hawking energy processing equipment refines the grains of the cladding layer and reduces stress concentration. While improving the surface finish, the surface of the cladding layer is subjected to compressive stress, and the fatigue performance of the cladding layer is improved, and the performance of the cladding layer is improved; at the same time, the defects such as coarse dendrites and component segregation caused by slow solidification due to remelting are solved. The dual beam and Hawking energy technology complement each other, which can significantly improve the internal and external forming accuracy and quality of metal parts and eliminate residual stress; and can greatly reduce the subsequent processing volume and processing procedures, significantly improve production efficiency, and can be directly polished after processing, which reduces costs while reducing the generation of waste, further improving production efficiency and saving energy.

[0037] The ultra-high-speed laser cladding processing equipment includes a four-axis linkage CNC machine tool, the maximum working stroke of the X-axis is 2000mm, the moving speed is 0-10000mm / min, and the repeatability is 0.025mm; the spindle servo speed of the C-axis is 0-300r / min. In some specific embodiments, the surface of the metal workpiece is clad by a continuous cladding laser beam, wherein: the metal workpiece is a rotating body, and the centers of all cross sections are on the same straight line. Since the rotating body has a large linear speed, a thin cladding layer can be formed quickly and evenly. The metal workpiece is fixed on the ultra-high-speed laser cladding processing equipment by a chuck. Preferably, the chuck is a manual three-jaw chuck with a chuck diameter of Ф600mm.

[0038] In some specific embodiments, a continuous laser beam is used to clad the surface of a metal workpiece, including: the metal powder used for cladding is any one of an iron-based powder, a nickel-based powder and a cobalt-based powder. Since the ultra-high-speed cladding technology has very high requirements on powder properties, inappropriate particle size affects the cladding quality, and poor sphericity easily produces pores and inclusions in the cladding layer. Preferably, the particle size of the metal powder is 20 to 50 μm, and the sphericity is not less than 90%. A coaxial powder feeding method is adopted, and the coaxial powder feeding amount is monitored and controlled by the powder feeder. The powder feeding speed determines the cladding efficiency and quality, and the conveying distance determines the focal position and also the cladding quality. By adjusting the process parameters such as the cladding line speed and the powder feeding speed, the spacing between the light beams and the process parameters are affected at the same time, and coupling control is formed between the light beams. Preferably, the powder feeding speed of the coaxial powder feeder is 20-160g / min, and the conveying distance is 1.5-6m; the focus of the cladding continuous laser beam and the position of the powder feeding nozzle determine the defocusing amount and also the quality of the cladding layer, and both are related to the cladding nozzle structure. Preferably, the focus of the cladding continuous laser beam is adjusted to 1-10mm above the surface of the metal workpiece, and the powder feeding nozzle is adjusted to 1-2mm above the surface of the metal workpiece. The rotation linear speed of the metal workpiece is 30 to 300 m / min to provide a higher surface moving speed to form a uniform ultra-thin cladding layer. The laser and powder feeder are turned on, and the cladding continuous laser beam and powder flow are moved along the axial direction of the metal workpiece. The cladding continuous laser beam melts the surface of the metal workpiece substrate and the metal powder used for filling to clad the surface of the metal workpiece.

[0039] In some specific embodiments, the surface of the cladding layer is remelted using a heat treatment continuous laser beam, wherein: the parameters of the heat treatment continuous laser beam are set to ensure that the forming and remelting speeds match. Specifically, for the second remelting beam, i.e., the heat treatment continuous laser beam, its parameters such as the focus position, the spot shape, and the energy spatial distribution are detected or controlled by a spot analyzer, a coaxial CMOS, a laser power meter, and a laser rangefinder. Preferably, the laser power of the heat treatment continuous laser beam is 5% to 15% less than the laser power of the cladding continuous laser beam, which reflects the short process characteristics of the method in the embodiment of the present invention, can ensure that the forming and remelting speeds match, improve the surface quality and precision of the molten pool through remelting, and solve the problems of pores and poor fusion.

[0040] In some specific embodiments, before using Hawke's energy processing technology to strengthen the ultra-high speed cladding layer within the strengthening temperature range, it includes: using a CNC machine tool of ultra-high speed laser cladding processing equipment to perform rough processing on the ultra-high speed cladding layer on the surface of the metal workpiece. Specifically, the surface roughness Rz of the ultra-high speed cladding layer is 6 to 7 um by using the CNC machine tool for rough processing, and a Hawke's energy processing area of ​​0.01 to 0.05 mm, i.e., the Hawke's energy strengthening influence area, is reserved.

[0041] The technical parameters of Hawken energy processing are set according to the performance of CNC machine tools. In some specific implementations, the Hawken energy processing technology is used to strengthen the ultra-high-speed cladding layer within the strengthening temperature range, including: fixing the Hawken energy processing equipment on the machine tool of the ultra-high-speed laser cladding processing equipment, the linear speed of the Hawken energy processing equipment is 35-60m / min, and the tool speed is 0.3-0.5mm / r, which plays a role in removing the internal stress of the cladding layer and strengthening the cladding layer.

[0042] For ultra-high-speed laser cladding layers, the Hawking energy processing technology is used to refine the grains of the cladding layer, improve the strength, plasticity and uniformity of the grain size of the formed workpiece, and reduce stress concentration. Hawking energy processing not only improves the surface finish, but also makes the surface of the cladding layer compressive stress, and improves the fatigue performance of the cladding layer, and improves the performance of the cladding layer. After the Hawking energy processing equipment is clamped on the laser head of the heat treatment continuous laser beam, as a process after heat treatment, the workpiece can be processed in place with one clamping. Hawking energy can realize the processing of shafts and inner hole cladding layers, and has a wide range of applications. Heat treatment can improve the flatness and precision of the cladding layer. The distance between the milligram energy processing equipment and the remelting beam can be set according to the material characteristics, so as to achieve short-process composite processing and effectively save energy.

[0043] In some specific embodiments, the cladding, remelting and Hawke's energy processing in the method form a closed-loop coupled control, including: establishing a multi-laser beam composite processing temperature field model according to the strengthening temperature characteristics of the formed cladding layer material; improving the multi-laser beam composite processing temperature field model through the performance parameters of the cladding layer after Hawke's energy processing, such as the grain size, residual stress distribution and microstructure of the cladding layer after Hawke's energy processing, so that the formed cladding layer material is in the optimal metal plastic forming temperature range after cladding-remelting-cooling; and using Hawke's energy processing technology to impact forge the cladding metal surface in the optimal metal plastic forming temperature range.

[0044] The composite manufacturing process parameters are detected and controlled online, and the Hawking processing technology strengthens the cladding layer. The parameters such as line speed and tool speed through Hawking processing are precisely controllable and adjustable, and can process cladding formed parts with different structural characteristics.

[0045] Reference Figure 1 In a specific embodiment, the short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology of the present invention is implemented according to the following steps:

[0046] (1) Grind, polish, clean with alcohol, and blow dry the metal workpiece to be clad for later use;

[0047] (2) Screening and drying the clad metal powder and then loading it into a powder feeder;

[0048] (3) Mount the metal workpiece on the ultra-high-speed laser cladding processing equipment and clamp it using a chuck and ejector pin;

[0049] (4) turning on the ultra-high-speed laser cladding processing equipment, using the cladding continuous laser beam 1 to clad the surface of the metal workpiece, i.e., the working surface 5 of the metal workpiece, and controlling the movement of the metal workpiece by the CNC machine tool to complete the cladding processing process;

[0050] In the process, a gas delivery nozzle is used to deliver argon to protect the molten pool 3; a coaxial powder delivery method is used, and the laser focus of the cladding continuous laser beam 1 is adjusted to 1-10 mm above the surface of the metal workpiece, and the powder delivery nozzle is adjusted to 1-2 mm above the surface of the metal workpiece; the metal workpiece is a rotating body, and the centers of all cross sections are on the same straight line, and the rotation linear speed of the metal workpiece is set to 30-300 m / min, the laser and the powder feeder are turned on, and the cladding continuous laser beam 1 and the powder flow 2 are moved along the axial direction of the metal workpiece, and the cladding continuous laser beam 1 melts the surface of the metal workpiece substrate and the metal powder used for filling, and the working surface 5 of the metal workpiece is clad;

[0051] (5) adjusting the focus of the heat treatment continuous laser beam 6 to 1 to 10 mm above the surface of the metal workpiece, and setting the laser power of the heat treatment continuous laser beam 6 to be 5% to 15% smaller than that of the cladding continuous laser beam 1; at the same time or when the liquid metal in the molten pool solidifies to form a new cladding layer, the heat treatment continuous laser beam 6 is used to remelt the surface of the cladding layer to form a remelted molten pool 7; the cladding material is stacked layer by layer by the cladding continuous laser beam and the heat treatment continuous laser beam in cooperation with each other, so as to form an ultra-high-speed cladding layer 4 on the working surface 5 of the metal workpiece;

[0052] (6) rough machining the ultra-high speed cladding layer 4 by a machine tool, so that the surface roughness Rz of the machined ultra-high speed cladding layer 4 is 6 to 7 μm, and a Hawkes energy machining area of ​​0.01 to 0.05 mm is reserved;

[0053] (7) The Hawken processing equipment 8 is fixed on the machine tool. The linear speed of the Hawken processing equipment is 35-60 m / min, and the tool speed is 0.3-0.5 mm / r. The ultra-high-speed cladding layer 4 is subjected to Hawken processing to strengthen the cladding metal surface within the strengthening temperature range.

[0054] Figure 2-3 The structure comparison of the ultra-high speed cladding samples without composite processing and composite processing by the method of the embodiment of the present invention is shown. It can be seen that after composite processing, the surface roughness is significantly reduced, the surface finish is higher, and the grain size is more uniform.

[0055] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the essence of the present invention. The above preferred features can be used in any combination without conflicting with each other.

Claims

1. A short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology, characterized in that: include: Cladding forming: Using ultra-high-speed laser cladding processing equipment, the surface of the metal workpiece is clad using a continuous laser beam; Laser heat treatment: the surface of the cladding layer is remelted by using a continuous laser beam for heat treatment at the same time; the cladding continuous laser beam and the heat treatment continuous laser beam cooperate with each other to stack the cladding material layer by layer, so as to form an ultra-high-speed cladding layer on the surface of the metal workpiece; the parameters of the heat treatment continuous laser beam are set to ensure that the forming and remelting speeds match, and the laser power of the heat treatment continuous laser beam is 5% to 15% less than the laser power of the cladding continuous laser beam; Hawking energy strengthening: After the Hawking energy processing equipment is clamped on the laser head of the heat treatment continuous laser beam, the workpiece can be processed in place after one clamping. Within the preset time after remelting, the Hawking energy processing equipment is used to impact and turn the surface of the cladding metal within the strengthening temperature range to strengthen the surface of the cladding metal within the strengthening temperature range; the linear speed of the Hawking energy processing equipment is 35-60m / min, and the tool speed is 0.3-0.5mm / r; the preset time calculation basis is: the time required for the temperature of the liquid metal to reach the temperature suitable for Hawking energy strengthening after solidification; Among them, a coaxial powder feeding method is adopted, the powder feeding speed of the coaxial powder feeder is 20-160g / min, and the feeding distance is 1.5-6m; the focus of the continuous laser beam of the cladding is adjusted to 1-10mm above the surface of the metal workpiece, and the powder feeding nozzle is adjusted to 1-2mm above the surface of the metal workpiece; the rotation linear speed of the metal workpiece is 30-300m / min, the laser and the powder feeder are turned on, and the laser beam and powder flow are moved along the axial direction of the metal workpiece, and the continuous laser beam of the cladding melts the surface of the metal workpiece substrate and the metal powder used for filling to clad the surface of the workpiece; The short process means that cladding forming and laser heat treatment are carried out simultaneously, and Hawkes energy strengthening is carried out within a preset time after remelting; Among them, cladding, remelting and Hawking processing form a closed-loop coupling control, including: According to the strengthening temperature characteristics of the formed cladding layer material, a multi-laser beam composite processing temperature field model is established; Through the performance parameters of the cladding layer after Hawking energy processing, the temperature field model of multi-laser beam composite processing is improved, so that the formed cladding layer material is in the optimal metal plastic forming temperature range after cladding-remelting-cooling; Hawking energy processing technology is used to impact forge the cladding metal surface in the optimal metal plastic forming temperature range.

2. The short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology according to claim 1 is characterized in that: The continuous laser beam is used to clad the surface of the metal workpiece, wherein: The metal workpiece is a rotating body, and the centers of all cross sections are on the same straight line; The metal powder used for cladding is any one of iron-based powder, nickel-based powder and cobalt-based powder. The particle size of the metal powder is 20-50 μm and the sphericity is not less than 90%.

3. The short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology according to claim 1 is characterized in that: Before the Hawke's energy processing technology is used to strengthen the ultra-high speed cladding layer within the strengthening temperature range, the method includes: using a CNC machine tool of ultra-high speed laser cladding processing equipment to perform rough processing on the ultra-high speed cladding layer on the surface of the metal workpiece.

4. The short-process composite ultra-high-speed laser cladding processing method based on Hawking energy technology according to claim 3 is characterized in that: The method of using a CNC machine tool with ultra-high-speed laser cladding processing equipment to rough-process the ultra-high-speed cladding layer on the surface of a metal workpiece includes: using the CNC machine tool to rough-process the ultra-high-speed cladding layer to a surface roughness Rz of 6 to 7 um, and reserving a Hawkes energy processing area of ​​0.01 to 0.05 mm.

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