CN111560609A - Optical fiber laser double-track cladding equipment for membrane type water-cooled wall of high-parameter waste incineration boiler - Google Patents
Optical fiber laser double-track cladding equipment for membrane type water-cooled wall of high-parameter waste incineration boiler Download PDFInfo
- Publication number
- CN111560609A CN111560609A CN202010220608.0A CN202010220608A CN111560609A CN 111560609 A CN111560609 A CN 111560609A CN 202010220608 A CN202010220608 A CN 202010220608A CN 111560609 A CN111560609 A CN 111560609A
- Authority
- CN
- China
- Prior art keywords
- laser
- optical fiber
- powder
- cladding
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides an optical fiber laser double-track cladding device for a membrane water wall of a high-parameter waste incineration boiler, which comprises a machine tool platform, a slide rail, a robot, a laser cladding head and an optical fiber; the machine tool platform is fixedly arranged on a horizontal plane, and a group of slide rails are independently arranged along the side edges parallel to the two sides of the machine tool platform; the robots are respectively and fixedly arranged on each group of slide rails, and after the two groups of robot arms are expanded to work, the cladding width between the two groups is not less than 6 m; the laser cladding unit is fixedly arranged at the top of the robot, a terminal is arranged in the laser cladding unit and connected with the optical fiber, and the laser cladding unit comprises the optical fiber, a laser light path adjusting module and a molten pool light path detecting module. The equipment can realize the thickness of a cladding layer of 0.8-1.5mm, uniform and beautiful height by arranging a closed-loop control system under the condition of ultralow heat input, scientifically and reasonably controls the powder utilization rate of laser cladding and the stable state of a molten pool by adjusting, and lays a solid foundation for large-scale and long-time unmanned operation.
Description
Technical Field
The invention belongs to the field of fiber laser cladding equipment for boiler water-cooled walls, and particularly relates to fiber laser double-track cladding equipment for a membrane water-cooled wall of a high-parameter waste incineration boiler.
Background
Along with the vigorous popularization of the classification of various large urban wastes, the scale of waste incineration power generation is also gradually enlarged. With the continuous increase of the heat value of the garbage and the increase of the parameters of the waste heat boiler from conventional parameters (4.0Mpa, 400 ℃) to high parameters (6.4Mpa, 450 ℃), the flue gas contains a large amount of acid gas and metal compounds due to the particularity of the fuel. During operation of the boiler, these harmful substances corrode the boiler tube walls. Research shows that the corrosion rate of the metal pipe wall of the boiler is in direct proportion to the concentration of acid gas, the concentration of metal compounds, the concentration of reducing gas, the temperature of flue gas, the temperature of metal walls, the running time and other factors in the flue gas.
The improvement of the steam parameters of the boiler is beneficial to improving the efficiency of the steam turbine and increasing the generated energy. With the change of the policy of subsidy of garbage power generation, the boiler with conventional parameters is difficult to meet the construction investment requirement, and more new power plants increase the boiler parameters to improve the whole plant benefit. The problem that the operation of a high-parameter boiler is influenced to the greatest extent is corrosion, areas with serious boiler corrosion are mainly concentrated in areas with high flue gas temperature, such as a water wall ceiling, the upper part of a flue and the like, and the wall of a superheater tube is slightly corroded.
At present, the corrosion-resistant and corrosion-resistant treatment of the surface of a film type water-cooled wall in boiler power generation equipment is almost carried out by using processes such as CMT, MIG, MAG and the like to carry out the surfacing welding of nickel-based high-temperature alloy, and meanwhile, the corresponding surfacing welding strengthening business is gradually increased. The traditional surfacing welding is used in the field, the single-layer dilution rate of a surfacing layer is up to 15-30%, the CMT, MIG and MAG surfacing welding needs multiple layers and increases the thickness, the thickness of common surfacing welding needs 2.5-4mm, the number of surfacing layers is more than 2, the use amount of welding materials used in the welding process is very large, the thickness of a welding seam is uneven, the quality is unstable, and meanwhile, large deformation after welding can also occur. The problem highlighting these conventional processes is presented to researchers: (1) the traditional surfacing welding material has large consumption, and wastes nickel-based high-temperature alloy material resources; (2) the multilayer surfacing efficiency is low; (3) the surfacing welding heat input is large, a large amount of smoke and dust are generated, the membrane water-cooled wall is greatly deformed, and great health hidden troubles are generated for welders and production workshops.
Disclosure of Invention
In order to solve the problems of great waste of nickel-based high-temperature alloy materials, low multi-layer surfacing efficiency, large heat input, environment pollution caused by a large amount of smoke dust, large deformation of the membrane water wall and the like when the boiler water wall is clad, the invention provides optical fiber laser double-track cladding equipment for the membrane water wall of the high-parameter waste incineration boiler, which comprises a machine tool platform, a slide rail, a robot, a laser cladding head and optical fibers; the machine tool platform is fixedly arranged on a horizontal plane, and a group of slide rails are independently arranged along the side edges parallel to the two sides of the machine tool platform; the robots are respectively and fixedly arranged on each group of slide rails, and after the two groups of robot arms are expanded to work, the cladding width between the two groups is not less than 6 m; the laser cladding unit is fixedly arranged at the top of the robot, and an end head is arranged in the laser cladding unit and connected with the optical fiber.
As an improvement, the laser cladding unit comprises an optical fiber, a laser light path adjusting module, a molten pool light path detecting module and a laser cladding head;
one end of the optical fiber is communicated with the optical fiber laser, and the other end of the optical fiber is connected with the laser light path adjusting module;
the laser light path adjusting module comprises a laser guide-in cavity, a side cavity, a central channel and a sleeve which are sequentially connected, wherein a connecting plate is arranged at the top of the laser guide-in cavity and is communicated with one end of an optical fiber through a QBH interface, and the bottom of the laser guide-in cavity is vertically connected with the side cavity; one end of the side cavity is communicated with the laser leading-in cavity, and the other end of the side cavity is vertically communicated with the central channel; the central channel is of a structure with two communicated ends, one end is communicated with the sleeve, and the other end is communicated with the molten pool light path detection module; the bottom of the sleeve is fixedly connected with the laser cladding head through a floor;
the molten pool light path detection module is sequentially provided with an objective lens, a detector, an optical filter, a detector and an optical signal digital simulator along the reverse direction of the sleeve installation on the central channel, wherein the optical signal digital simulator is externally connected with a processing unit through a communication signal wire;
the laser cladding head is provided with a facula reducing telescopic cylinder and a nozzle from top to bottom in sequence, laser in the sleeve and light in the molten pool penetrate through the facula reducing telescopic cylinder to be adjusted, and the nozzle is arranged above the molten pool and is of an annular taper structure.
As an improvement, the laser guiding device further comprises a straight mirror, a reflecting mirror and a focusing mirror, wherein the straight mirror is a 45-degree reflecting off-axis parabolic collimating mirror and is fixedly arranged at the joint of the laser guiding cavity and the side cavity; the reflector is a semi-transparent reflector and is fixedly arranged at the joint of the side cavity and the central channel; the focusing mirror is a reflection type focusing mirror and is fixedly arranged at the joint of the central channel and the sleeve.
As an improvement, the device also comprises a fixing plate, a protective lens, an inert gas protector interface, a powder and light coaxial adjusting knob; the fixed plate is fixedly arranged on the side face of the sleeve, and a protective lens, an inert gas protector interface, a powder and light coaxial adjusting knob are sequentially arranged from top to bottom along the vertical direction of the fixed plate; the protective lens is used for blocking smoke dust, splashing and reflection generated by a molten pool in the laser cladding process so as to prevent the pollution of a focusing lens above the structure of the protective lens, one end of an inert gas protector interface is connected with an external inert gas protective bottle, and the other end of the inert gas protector interface is communicated with the inside of the sleeve; and the powder and light coaxial adjusting knob is used for adjusting the laser direction and whether the laser direction is coaxial with the bottom alloy powder after being conveyed.
As the improvement, the nozzle includes annular nozzle shell, coaxial nozzle back taper, the annular nozzle shell cover is established in coaxial nozzle back taper outside, is hollow structure in the middle of the coaxial nozzle back taper.
As an improvement, a plurality of groups of powder inlet pipes and powder channels are arranged on the outer side of the upper end of the inverted cone of the coaxial nozzle; the powder inlet pipe preferably comprises a first powder pipe, a second powder pipe and a third powder pipe which are arranged on the inverted cone of the coaxial nozzle at intervals of 120 degrees, one end of the powder inlet pipe is communicated with an external powder feeder, and the other end of the powder inlet pipe is communicated with the annular conical cavity through a powder channel on the inverted cone of the coaxial nozzle.
As an improvement, the cooling water cooling device also comprises a cooling water channel and a cooling cavity; the cooling cavity is arranged inside the coaxial nozzle inverted cone and used for nozzle water cooling, one end of the cooling cavity is communicated with the water outlet pipe through the cooling water channel, and the other end of the cooling cavity is communicated with external cooling water through the water inlet pipe.
As an improvement, the laser head height position adjusting device further comprises a central processing unit which is set to be a power adjusting and laser head height position adjusting central processing unit, is in wired connection with a communication signal line, analyzes and processes received data signals, and is electrically connected with a processing unit.
As an improvement, the processing unit comprises a robot and a fiber laser, wherein the robot is electrically connected with the central processing unit through a robot tool coordinate Z-axis height adjusting signal line, and the fiber laser is electrically connected with the central processing unit through a laser power adjusting signal line.
Meanwhile, the fiber laser double-track cladding equipment for the high-parameter waste incineration boiler membrane water wall is also provided, and is applied to laser cladding of a corrosion-resistant layer of a heating surface of the high-parameter waste incineration boiler membrane wall, or applied to a tube panel, a pipeline and a bent tube.
Has the advantages that: compared with the traditional surfacing welding, the optical fiber laser double-track cladding equipment for the membrane type water-cooled wall of the high-parameter waste incineration boiler provided by the invention overcomes the defects or problems of resource waste, large deformation, low efficiency and the like, realizes the optical fiber laser cladding with high efficiency, energy conservation, precious metal resource conservation and environmental protection on the water-cooled wall of the boiler, greatly improves the processing capacity, improves the working efficiency and the processing quality, and reduces the equipment investment and the production cost of enterprises. In particular, the following advantages are present:
(1) through the double-track double-robot, the cladding processing efficiency is improved, and the problem that the existing workpiece with the width of about 6m, such as a tube panel, cannot be integrally tiled for laser cladding is solved.
(2) The invention changes the problem of large heat input required by traditional surfacing under the condition of poor heat conductivity of the conventional nickel-based alloy, can meet the surfacing requirement with ultralow heat input, and solves the problems of reduced mechanical property of a welding joint, slag inclusion of a welding seam and welding defects caused by thermal cracks and easy surface oxidation caused by large heat input in the prior art.
Meanwhile, when cladding the tube panel, the pipeline, the bent pipe and the like, the tube panel, the pipeline, the bent pipe and the like can be effectively prevented from deforming, such as shrinkage deformation and bending deformation, and generating hot cracks in the welding process, so that the requirements on the dimensional accuracy of the tube panel, the pipeline, the bent pipe and the like are met, the repair quantity is reduced, the production period is shortened, and the quality of the tube panel, the pipeline, the bent pipe and other products is improved.
(3) By arranging the closed-loop control system, the utilization rate of powder alloy after powder feeding can be ensured to be highest, the thickness and the quality of the cladding layer are uniform and consistent, the thickness of the cladding layer can be 0.8-1.5mm, the height is uniform and attractive, the adjustment is scientific and reasonable in the powder utilization rate of laser cladding and the stable state of a molten pool, and a solid foundation is laid for large-scale and long-time unmanned operation.
(4) The optical information of the surface of the molten pool is acquired in real time through the arranged detector and the central processing unit, the optical signal is converted into an electric signal to be processed and acquired, and then processed and analyzed, and further the moving path of the robot and the working power of the optical fiber laser device are adjusted in an instructive manner, so that the central processing unit can automatically feed back the optical fiber laser device to improve the power output of laser when the temperature of the molten pool is lower than or higher than a set temperature, and when the distance between the laser cladding head and a part is too close or too far, the central processing unit can automatically feed back the working robot or welding mechanical arm to adjust the position, so that the distance between the laser cladding head and the part and the molten pool formed on the part is kept constant by the robot or the welding mechanical arm, the focus of the annular powder column is coincident with the molten pool, the highest utilization rate is.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention.
Fig. 2 is a schematic structural diagram of a laser cladding unit according to the present invention.
FIG. 3 is a schematic view of the nozzle of the present invention.
The attached drawings are as follows: the device comprises a robot controller 1, a powder feeder 2, an optical fiber laser 3, a water cooling machine 4, a voltage stabilizer 5, an optical fiber 6, a robot 7, a laser cladding unit 8, a slide rail 9, a machine tool platform 10, an objective lens 11, a lens 12, a detector and optical filter 13, a detector 14, an optical signal digital simulator 15, a communication signal line 16, a processor 17, a robot tool coordinate Z-axis height adjusting signal line 18, a laser power adjusting signal line 19, a QBH interface 20, a tapered laser 21, a straight mirror 22, a reflecting mirror 23, a focusing mirror 24, a protective lens 25, an inert gas protective gas interface 26, a powder and optical coaxial adjusting knob 27, a light spot variable-diameter telescopic cylinder 28, a nozzle 29, a powder focus 30, an annular nozzle shell 31, a coaxial nozzle inverted cone 32, a powder channel 33, a powder pipe 34, a powder pipe 35, a water inlet pipe 36, a powder pipe 37, a water outlet pipe 38, a cooling water channel 39, a water channel 36, a water-, The device comprises an annular conical cavity 40, a molten pool 41, a connecting plate 101, a laser leading-in cavity 100, a side cavity 200, a central channel 300, a sleeve 400, a laser cladding head 500, a fixing plate 800, a bottom plate 900 and a part 1-1.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
An optical fiber laser double-track cladding device for a membrane water-cooled wall of a high-parameter waste incineration boiler comprises a machine tool platform 10, a slide rail 9, a robot 7, a laser cladding unit 8, a powder feeder 2 and an optical fiber 6; the machine tool platform 10 is fixedly arranged on a horizontal plane, and a group of slide rails 9 are independently arranged along the side edges parallel to the two sides of the machine tool platform 10; the robot 7 is fixedly arranged on each group of slide rails 9 respectively; the laser cladding unit 8 is fixedly installed at the top of the robot 7, and the inner end of the laser cladding unit is connected with the optical fiber 6.
Meanwhile, after the 7 arms of the two groups of robots are unfolded, the cladding width between the two groups of robots is not less than 6m, and the arranged double-track double-robot has the advantages that the cladding processing efficiency is improved, and the problems that the existing tube panel with the width of about 5m cannot be clad by laser are solved.
Still include robot controller 1, be provided with two sets ofly, fixed mounting is in the slide rail 9 outside respectively, every group all with a set of robot 7 electric connection who closes on for robot 7's orbit direction of motion.
A group of water cooling machines 4, a group of optical fiber lasers 3 and a group of voltage stabilizers 5 are symmetrically arranged on two sides of the sliding rail 9 respectively, wherein the water cooling machines 4 are electrically connected with the optical fiber lasers 3, the optical fibers 6 and the laser cladding unit 8 and are used for water cooling work in the working process; the voltage stabilizer 5 is electrically connected with the optical fiber laser 3 and provides stable voltage and current for the optical fiber laser 3; the fiber laser 3 is used for an output fiber 6.
The robot 7 is of a six-axis linkage robot structure, and the laser cladding unit 8 is fixedly installed at the sixth axis of the robot 7. The powder feeder 2 is a double-powder-barrel or multi-powder-barrel powder feeder, is communicated with a powder inlet pipe on the laser cladding unit 8, and is used for providing cladding powder.
The laser cladding device is fixedly connected with the laser cladding unit 8 and is communicated with the coaxial annular nozzle structure through an air inlet pipe.
Through the mutual matching of the components, the robot controller can be subjected to programming of a robot language program, and the robot track can be defined and planned, so that the efficient, energy-saving, precious metal resource-saving, environment-friendly, low-cost and high-efficiency laser cladding of the boiler membrane type water-cooled wall is realized.
As a specific embodiment of the present invention, the laser cladding unit 8 includes an optical fiber 6, a laser path adjusting module, a molten pool light path detecting module, and a laser cladding head 500;
one end of the optical fiber 6 is communicated with the optical fiber laser 3, and the other end of the optical fiber is connected with the laser light path adjusting module;
the laser light path adjusting module comprises a laser guide-in cavity 100, a side cavity 200, a central channel 300 and a sleeve 400 which are sequentially connected, wherein the top of the laser guide-in cavity 100 is provided with a connecting plate 101 which is communicated with one end of an optical fiber 6 through a QBH interface 20 (namely an optical fiber laser cable interface), and the bottom of the laser guide-in cavity is vertically connected with the side cavity 200; one end of the side cavity 200 is communicated with the laser guide-in cavity 100, and the other end is vertically communicated with the central channel 300; the central channel 300 is a structure with two communicated ends, one end is communicated with the sleeve 400, and the other end is communicated with a molten pool light path detection module; the bottom of the sleeve 400 is fixedly connected with the laser cladding head 500 through a bottom plate 900;
the molten pool optical path detection module is sequentially provided with an objective lens 11, a lens 12, a detector and optical filter 13, a detector 14 and an optical signal digital simulator 15 along the reverse direction of the installation of the sleeve 400 on the central channel 300, wherein the optical signal digital simulator 15 is externally connected with a processing unit through a communication signal wire 16;
the laser cladding head 500 is provided with a light spot diameter-changing telescopic cylinder 28 and a nozzle 29 from top to bottom in sequence, the defocusing amount of a light spot formed below the nozzle 29 is changed by adjusting the position of the light spot diameter-changing telescopic cylinder 28 up and down, so that the size of a molten pool is changed, and the nozzle 29 is arranged above the molten pool and is of an annular cone-shaped structure.
The laser guiding device further comprises a straight mirror 22, a reflecting mirror 23 and a focusing mirror 24, wherein the straight mirror 22 is a 45-degree reflecting off-axis parabolic collimating mirror and is fixedly arranged at the joint of the laser guiding cavity 100 and the side cavity 200; the reflector 23 is a semi-transparent reflector and is fixedly installed at the joint of the side cavity 200 and the central channel 300; the focusing mirror 24 is a reflective focusing mirror and is fixedly installed at the joint of the central passage 300 and the sleeve 400.
The device also comprises a fixing plate 800, a protective lens 25, an inert gas protector interface 26 and a powder and light coaxial adjusting knob 27; the fixing plate 800 is fixedly arranged on the side surface of the sleeve 400, and is sequentially provided with a protective lens 25, an inert gas protector interface 26, a powder and light coaxial adjusting knob 27 from top to bottom along the vertical direction of the fixing plate 800; the protective lens 25 is used for blocking smoke dust, splashing and reflection generated by a molten pool in the laser cladding process so as to prevent the pollution of a focusing lens 24 above the structure of the protective lens, one end of an inert gas protector interface 26 is connected with an external inert gas protective bottle, and the other end of the inert gas protector interface is communicated with the inside of the sleeve; the powder and light coaxial adjusting knob 27 is used for adjusting the laser direction and whether the bottom alloy powder is coaxial after being conveyed.
The nozzle 29 comprises an annular nozzle shell 31 and a coaxial nozzle inverted cone 32, wherein the annular nozzle shell 31 is sleeved outside the coaxial nozzle inverted cone 32, and the middle of the coaxial nozzle inverted cone 32 is of a hollow structure.
A plurality of groups of powder inlet pipes and powder channels 33 are arranged on the outer side of the upper end of the inverted cone 32 of the coaxial nozzle; the powder inlet pipe preferably comprises a first powder pipe 34, a second powder pipe 35 and a third powder pipe 37, which are arranged on the coaxial nozzle inverted cone 32 at intervals of 120 degrees, one end of the powder inlet pipe is communicated with the external powder feeder 2, and the other end of the powder inlet pipe is communicated with the annular conical cavity 40 through the powder channel 33 on the coaxial nozzle inverted cone 32.
Also comprises a cooling water channel 39 and a cooling cavity; the cooling cavity is arranged in the coaxial nozzle inverted cone 32 and used for water cooling of the nozzle 29, one end of the cooling cavity is communicated with a water outlet pipe 38 through a cooling water channel 39, and the other end of the cooling cavity is communicated with an external water cooling machine 4 through a water inlet pipe 36.
The laser head height position adjusting device is characterized by further comprising a central processing unit which is set to be a power adjusting and laser head height position adjusting central processing unit, is in wired connection with a communication signal line, analyzes and processes received data signals, and is electrically connected with a processing unit.
The processing unit is electrically connected with the robot 7 and the fiber laser 3, wherein the robot 7 is electrically connected with the central processing unit through a robot tool coordinate Z-axis height adjusting signal line, and the fiber laser 3 is electrically connected with the central processing unit through a laser power adjusting signal line.
Laser path:
the laser light path in the invention is as follows: after the laser with a certain wavelength, preferably 900-1200nm, is generated by the fiber laser 3, it is conducted to the laser cladding unit 8 through the fiber 6. The conical laser 21 is presented after passing through a QBH interface 20 of the laser head, a columnar laser beam is formed after passing through a 45-degree reflection type off-axis parabolic collimator 22, and the columnar laser beam irradiates a 45-degree inclined semi-transparent reflector 23 to change the propagation direction and irradiate a 45-degree reflection type focusing mirror 24 to form a conical focusing beam again. The light beam sequentially passes through a protective lens 25, a positive pressure cavity formed by inert protective gas entering through an inert gas protective gas interface 26, a light spot diameter-changing telescopic cylinder 28 and a coaxial annular powder cladding nozzle 29; after a molten pool 41 is formed on the membrane wall part, the powder coaxial adjusting knob 27 is adjusted to coincide the action point of the light with the powder coke point.
Detecting a path:
after various information of the molten pool, such as temperature, spot size, convection, mass transfer and nozzle height information, is sent out on the optical layer, the information sequentially passes through a coaxial ring powder cladding nozzle 29, a spot diameter-variable telescopic cylinder 28, a cavity with positive pressure formed by inert protective gas entering through a protective gas interface 26, a protective lens 25, a 45-degree reflective focusing lens 24, a 45-degree semi-transparent reflecting lens 23, an objective lens 11 aperture and a lens 12, and then reaches the detector hole and an optical filter 13.
The detector 14 detects the calibrated optical signal, transmits the optical signal to the processor 17 through the communication signal line 16 in the form of electric signal through the optical signal digital-analog converter 15, and the processor processes and analyzes the quantity to be adjusted through the power adjusting and laser head height position adjusting central processing unit, and then communicates with the robot and the optical fiber laser through the robot tool coordinate Z-axis height adjusting signal line 18 and the laser power adjusting signal line 19 respectively to adjust the laser power and the height position of the laser head. Wherein the detector 14 is capable of acquiring optical signals in the prior art for detection.
During specific operation, when the analyzed data judges that the temperature of the molten pool is lower than or higher than the set temperature, the central processing unit of the laser cladding unit 8 can automatically feed back to the optical fiber laser to improve the power output of laser, and when the distance between the laser cladding unit 8 and the part is too close or too far, the central processing unit of the laser cladding unit 8 sends a signal to the robot controller 1, so that the distance between the laser cladding unit 8 and the molten pool formed on the part 1-1 is kept constant by the robot 7, the focus of the annular powder column is ensured to be coincident with the molten pool, the highest utilization rate is ensured, and the thickness and the quality of the cladding layer are uniform and consistent.
The closed-loop control system can scientifically and reasonably control the powder utilization rate of laser cladding and the stable state of a molten pool, and lays a solid hardware foundation for large-scale and long-time unmanned operation.
Powder feeding path:
the laser beam passes through the coaxial ring powder cladding nozzle 29 to generate a molten pool 41 on the surface of the membrane wall part. The alloy powder is fed to the coaxial ring powder cladding nozzle 29 by the powder feeder. The powder is uniformly distributed into the coaxial annular powder cladding nozzle 29 at an interval of 120 degrees through a first powder pipe 34, a second powder pipe 35 and a third powder pipe 37, and flows in an annular conical cavity 40 formed by an annular nozzle shell 31 and a coaxial nozzle inverted cone 32 after passing through a powder channel 33 and converges on a powder focus 30. In normal operation the powder focus 30 coincides with the melt pool 41.
Water cooling circulation path:
the water-cooling water of the outer light path is pumped by the water cooler and sent to the coaxial ring powder cladding nozzle 29 along the cooling water pipe, then enters the cooling water channel 39 through the water inlet pipe 36, flows out of the water outlet pipe 38 and returns to the water cooler 4 to finish the water cooling of the coaxial ring powder cladding nozzle 29.
Inert gas enters through the connector of the protector 26 to form a positive pressure cavity, the inert gas passes through the light spot reducing telescopic cylinder 28 and a taper hole channel in the coaxial nozzle inverted cone 32 and is blown outwards to a molten pool 41 formed on the surface of the membrane type water-cooled wall part 1-1, air is isolated to form good gas protection, and simultaneously gas generated in the molten pool and spherical powder flicked from a powder coke position are blown away to protect the annular nozzle shell 31, an annular nozzle below the coaxial nozzle inverted cone 32 and the protective lens 25 from being polluted by powder, smoke particles, plasma and the like.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. High parameter waste incineration is fiber laser double track cladding equipment for boiler membrane water-cooled wall, its characterized in that: the device comprises a machine tool platform (10), a slide rail (9), a robot (7), a laser cladding unit (8) and an optical fiber (6); the machine tool platform (10) is fixedly arranged on a horizontal plane, and a group of sliding rails (9) are independently arranged along the side edges parallel to the two sides of the machine tool platform (10); the robots (7) are respectively and fixedly arranged on each group of sliding rails (9), and after the arms of the two groups of robots (7) are unfolded to work, the cladding width between the two groups is not less than 6 m; the laser cladding unit (8) is fixedly arranged at the top of the robot (7), and one end of the laser cladding unit is connected with the optical fiber (6).
2. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 1, wherein: the laser cladding unit (8) comprises an optical fiber (6), a laser light path adjusting module, a molten pool light path detecting module and a laser cladding head (500);
one end of the optical fiber (6) is communicated with the optical fiber laser (3), and the other end of the optical fiber is connected with the laser light path adjusting module;
the laser light path adjusting module comprises a laser leading-in cavity (100), a side cavity (200), a central channel (300) and a sleeve (400) which are sequentially connected, wherein a connecting plate (101) is arranged at the top of the laser leading-in cavity (100), is communicated with one end of an optical fiber (6) through a QBH interface (20), and is vertically connected with the side cavity (200) at the bottom; one end of the side cavity (200) is communicated with the laser leading-in cavity (100), and the other end of the side cavity is vertically communicated with the central channel (300); the central channel (300) is of a structure with two communicated ends, one end is communicated with the sleeve (400), and the other end is communicated with the molten pool light path detection module; the bottom of the sleeve (400) is fixedly connected with the laser cladding head (500) through a bottom plate (9);
the molten pool light path detection module is sequentially provided with an objective lens (11), a lens (12), a detector, an optical filter (13), a detector (14) and an optical signal digital simulator (15) along the reverse direction of the installation of the sleeve (400) on the central channel (300), wherein the optical signal digital simulator (15) is externally connected with a processing unit through a communication signal wire (16);
the laser cladding head (500) is provided with facula reducing telescopic cylinder (28) and nozzle (29) from top to bottom in proper order, changes the defocusing amount of facula formation below the nozzle (29) through adjusting the position of facula reducing telescopic cylinder (28) from top to bottom to change the size of molten pool, nozzle (29) set up above the molten pool, are annular taper structure.
3. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 2, wherein: the laser guiding device also comprises a straight mirror (22), a reflecting mirror (23) and a focusing mirror (24), wherein the straight mirror (22) is a 45-degree reflecting off-axis parabolic collimating mirror and is fixedly arranged at the joint of the laser guiding cavity (100) and the side cavity (200); the reflector (23) is a semi-transparent reflector and is fixedly arranged at the joint of the side cavity (200) and the central channel (300); the focusing mirror (24) is a reflection type focusing mirror and is fixedly arranged at the joint of the central channel (300) and the sleeve (400).
4. The fiber laser double rail cladding apparatus for boiler membrane water wall according to claim 2, characterized in that: the device also comprises a fixing plate (800), a protective lens (25), an inert gas protector interface (26) and a powder and light coaxial adjusting knob (27); the fixing plate (800) is fixedly arranged on the side surface of the sleeve (400), and a protective lens (25), an inert gas protector interface (26) and a powder and light coaxial adjusting knob (27) are sequentially arranged along the vertical direction of the fixing plate (800) from top to bottom; wherein the protective lens (25) is used for blocking smoke, splash and reflection generated by a molten pool in the laser cladding process so as to prevent the focusing lens (24) above the structure from being polluted; one end of an inert gas protector interface (26) is connected with an external inert gas protection bottle, and the other end is communicated with the inside of the sleeve; and the powder and light coaxial adjusting knob (27) is used for adjusting the laser direction and whether the bottom alloy powder is coaxial after being conveyed.
5. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 2, wherein: nozzle (29) includes annular nozzle shell (31), coaxial nozzle back taper (32), annular nozzle shell (31) cover is established in coaxial nozzle back taper (32) outside, is hollow structure in the middle of coaxial nozzle back taper (32).
6. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 5, wherein: a plurality of groups of powder inlet pipes and powder channels (33) are arranged on the outer side of the upper end of the coaxial nozzle inverted cone (32); the powder inlet pipe preferably comprises a first powder pipe (34), a second powder pipe (35) and a third powder pipe (37), the first powder pipe, the second powder pipe and the third powder pipe are arranged on the inverted cone (32) of the coaxial nozzle at intervals of 120 degrees, one end of each powder inlet pipe is communicated with an external powder feeder, and the other end of each powder inlet pipe is communicated with the annular conical cavity (40) through a powder channel (33) on the inverted cone (32) of the coaxial nozzle.
7. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 5, wherein: the cooling water channel (39) and the cooling cavity are also included; the cooling cavity is arranged inside a coaxial nozzle inverted cone (32) and used for water cooling of the nozzle (29), one end of the cooling cavity is communicated with a water outlet pipe (38) through a cooling water channel (39), and the other end of the cooling cavity is communicated with external cooling water through a water inlet pipe (36).
8. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 2, wherein: the laser head height position adjusting device is characterized by further comprising a central processing unit which is set to be a power adjusting and laser head height position adjusting central processing unit, is in wired connection with a communication signal line, analyzes and processes received data signals, and is electrically connected with a processing unit.
9. The high-parameter waste incineration boiler membrane water-cooled wall optical fiber laser double-track cladding equipment as claimed in claim 8, wherein: the processing unit is electrically connected with the robot (7) and the fiber laser (3), wherein the robot (7) is electrically connected with the central processing unit through a robot tool coordinate Z-axis height adjusting signal line, and the fiber laser (3) is electrically connected with the central processing unit through a laser power adjusting signal line.
10. The fiber laser double-track cladding equipment for the membrane water-cooled wall of the high-parameter waste incineration boiler according to any one of claims 1 to 9, and is applied to laser cladding of a corrosion-resistant layer of a heating surface of the membrane wall of the high-parameter waste incineration boiler, or is applied to tube panels, pipelines and bent tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220608.0A CN111560609B (en) | 2020-03-25 | 2020-03-25 | Optical fiber laser double-track cladding equipment for membrane type water-cooled wall of high-parameter waste incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220608.0A CN111560609B (en) | 2020-03-25 | 2020-03-25 | Optical fiber laser double-track cladding equipment for membrane type water-cooled wall of high-parameter waste incineration boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111560609A true CN111560609A (en) | 2020-08-21 |
| CN111560609B CN111560609B (en) | 2021-03-09 |
Family
ID=72069909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010220608.0A Active CN111560609B (en) | 2020-03-25 | 2020-03-25 | Optical fiber laser double-track cladding equipment for membrane type water-cooled wall of high-parameter waste incineration boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111560609B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193109A (en) * | 2021-12-12 | 2022-03-18 | 哈尔滨驰远电力设备工程有限公司 | Laser cladding tube panel for coal-fired boiler and manufacturing method thereof |
| CN117464027A (en) * | 2023-11-06 | 2024-01-30 | 苏州朗威电子机械股份有限公司 | Carbide ceramic steel plate heterostructure composite board preparation equipment and technology |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328584A (en) * | 2007-06-19 | 2008-12-24 | 上海海事大学 | Laser cladding real time monitoring system |
| CN101690993A (en) * | 2009-09-30 | 2010-04-07 | 华中科技大学 | Multi-axis linkage numerical control laser processing system |
| CN108165987B (en) * | 2018-01-08 | 2021-01-12 | 沈阳工业大学 | Repairing device and repairing method for inner hole of machine tool spindle |
| CN108941948B (en) * | 2018-08-14 | 2020-12-18 | 南京工大数控科技有限公司 | Double-station composite welding equipment and method |
-
2020
- 2020-03-25 CN CN202010220608.0A patent/CN111560609B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193109A (en) * | 2021-12-12 | 2022-03-18 | 哈尔滨驰远电力设备工程有限公司 | Laser cladding tube panel for coal-fired boiler and manufacturing method thereof |
| CN114193109B (en) * | 2021-12-12 | 2022-10-21 | 哈尔滨驰远电力设备工程有限公司 | Laser cladding tube panel for coal-fired boiler and manufacturing method thereof |
| CN117464027A (en) * | 2023-11-06 | 2024-01-30 | 苏州朗威电子机械股份有限公司 | Carbide ceramic steel plate heterostructure composite board preparation equipment and technology |
| CN117464027B (en) * | 2023-11-06 | 2024-04-09 | 苏州朗威电子机械股份有限公司 | Carbide ceramic steel plate heterostructure composite board preparation equipment and technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111560609B (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111560609B (en) | Optical fiber laser double-track cladding equipment for membrane type water-cooled wall of high-parameter waste incineration boiler | |
| CN110144583B (en) | Wide-beam and adjustable-powder-feeding-angle rapid and efficient semiconductor laser cladding device | |
| CN106637195B (en) | Hot spot and the coaxial powder-feeding nozzle of powder feeding position can be automatically adjusted | |
| CN102059455B (en) | Laser double-side synchronous welding system with skin-skeleton structure | |
| CN109530919A (en) | A kind of the multi-beam laser fuse increasing material manufacturing equipment and method of ultrasonic wave added | |
| CN101386111A (en) | Inside-laser wire feeding cladding method and inside-laser wire feeding device | |
| CN104289811A (en) | Multi-beam center wire feeding laser processing head and processing method thereof | |
| CN109175689B (en) | Self-adaptive fillet welding system based on visual detection and working method | |
| CN106166645A (en) | A kind of electric arc combined welder of robotic laser and method | |
| CN215033627U (en) | Annular hollow partial-focus laser cladding device | |
| CN207347659U (en) | A kind of aperture laser melting coating processing head | |
| CN214768946U (en) | Three-beam wire powder mixed laser cladding system | |
| CN206584125U (en) | Laser wide-band cladding device | |
| CN207735775U (en) | A kind of device of the laser-arc hybrid welding in industry of coating steel pipe | |
| CN110684974A (en) | Variable facula's galvanometer scanning formula laser cladding processing head device | |
| US20150128881A1 (en) | Method for manufacturing boiler water walls and boiler with laser/arc welded water walls | |
| CN211445900U (en) | Laser cladding head for inner wall of cylinder | |
| CN213652649U (en) | High-speed laser cladding head | |
| CN113231741A (en) | Laser welding device and method based on annular facula coaxial wire feeding | |
| CN207615950U (en) | A kind of welding system suitable for steel containment vessel weld seam | |
| CN216473480U (en) | Laser cladding device with gas protection | |
| CN113798636B (en) | Multilayer laser forging hybrid electric arc welding method and device for accurately controlling right-angle welding seam area | |
| CN203422527U (en) | Wideband laser cladding device | |
| CN214458332U (en) | Circular tube or finned tube surface cladding equipment | |
| CN114457331A (en) | Laser cladding processing head system capable of adaptively adjusting working focal length along with movement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |