CN214350269U

CN214350269U - Membrane wall surfacing machine

Info

Publication number: CN214350269U
Application number: CN202022428544.1U
Authority: CN
Inventors: 方裕存
Original assignee: Sun Tech Zhuhai Welding Co ltd
Current assignee: Sun Tech Zhuhai Welding Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-10-08
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a diaphragm type wall surfacing machine, include: a work stage for fixing a workpiece; the gantry type welding frame is arranged above the workbench frame; the welding head is arranged on a beam of the gantry type welding frame and comprises a laser welding head and a hot wire welding gun, the laser welding head is used for outputting laser beams to focus on the surface of a workpiece to form a molten pool, and the hot wire welding gun is used for conveying welding wires to the molten pool; the laser generator is connected with the laser welding head; a hot wire heating device for heating the welding wire; and the control system is connected with the laser generator and the hot wire heating device. The utility model discloses a diaphragm type wall surfacing machine, through laser welder head output laser beam in order to form the molten bath at the focusing of workpiece surface, carry the welding wire to the molten bath through hot wire welder to melt the welding wire and cover build-up welding in ordinary boiler diaphragm type wall surface, with the purpose that realizes the surface modification, thereby prolong waste incinerator's life with minimum cost furthest.

Description

Membrane wall surfacing machine

Technical Field

The utility model relates to a welding equipment especially relates to a diaphragm type wall surfacing machine.

Background

The garbage burning method has the advantages of large treatment capacity, large volume reduction, recoverable heat energy and the like. The 'water-cooled membrane wall' is the core part of the garbage incinerator. By analyzing and researching the high-temperature corrosion mechanism of the garbage incinerator, according to the special combustion working condition of garbage, the water-cooling membrane type wall serving as the heating surface of the boiler needs to have the performances of high temperature resistance, wear resistance, corrosion resistance, adhesion resistance, alkali resistance, oxidation resistance, high-temperature chlorine corrosion resistance and the like. Materials that have the above characteristics (e.g., nickel-based alloy Inconel625) are very expensive. Therefore, if the membrane wall is made of the above-mentioned material with high temperature corrosion resistance, the cost is very high. A thinner characteristic layer is added on the surface of the common boiler steel with low price so as to simultaneously consider the use performance and the cost, and the idea for solving the problems which is accepted by people at the present stage is surface modification.

The coating obtained by Physical Vapor Deposition (PVD), chemical deposition (CVD), supersonic spraying, flame or electric arc spraying and other methods can obtain the properties of high hardness, good uniformity, compactness, corrosion resistance, wear resistance and the like, but the coating is thin, high in cost and not suitable for large-area construction, so that the coating is not suitable for surface modification of the membrane wall. Practice proves that a high-temperature corrosion-resistant wear-resistant Inconel625 layer which is excellent in performance and expensive is formed by surfacing on the surface of a common boiler pipe/plate which is low in price, and the technical scheme is a corrosion-resistant surface modification technical scheme which is highest in cost performance and strong in operability and is used in a specific environment.

A wide variety of arc welding processes may be used for surface modified hardfacing. Aiming at the inherent working condition of membrane wall surfacing welding and the requirement of large-area surfacing welding, the conventional TIG surfacing welding with low cladding efficiency cannot meet the requirement of high-efficiency production; in the production process, welding is carried out on the surface with small curvature radius, the forming of a molten pool is required to be accurately controlled, and the process of strip surfacing is limited; the heat input is required to be small to reduce the deformation of the product; the dilution ratio is required to be low so as to reduce the thickness of the overlaying layer as much as possible to reduce the cost on the premise of meeting the service performance, and the manual arc welding and submerged arc welding cannot meet the quality control requirement.

Disclosure of Invention

For solving current build-up welding equipment cladding inefficiency, dilution rate on the high side or unstable, work piece can not keep flat when producing and weld and cause the extremely inconvenient and inefficiency scheduling problem of operation, the utility model provides a diaphragm type wall build-up welding machine for fuse the build-up welding in ordinary boiler diaphragm type wall surface with high temperature resistant corrosion's nickel base alloy Inconel625 welding wire, with the purpose of realizing surface modification, thereby prolong waste incinerator's life with minimum cost furthest.

In order to solve the technical problem, the utility model provides a diaphragm type wall surfacing machine, include: a work stage for fixing a workpiece; a gantry-type welding stand which is arranged above the workbench stand and can move along the X-axis direction relative to the workbench stand; the machine head is arranged on the gantry type welding frame and can move along the Y-axis direction relative to the working table frame, the machine head comprises a laser welding head and a hot wire welding gun, the laser welding head is used for outputting a laser beam to focus on the surface of the workpiece to form a molten pool, and the hot wire welding gun is used for conveying a welding wire to the molten pool; a laser generator connected to the laser welding head; a hot wire heating device for heating the welding wire; and the control system is connected with the laser generator and the hot wire heating device.

The utility model discloses a diaphragm type wall surfacing machine, through laser welder head output laser beam in order to form the molten bath at the focusing of workpiece surface, carry the welding wire to the molten bath through hot wire welder to melt the welding wire and cover build-up welding in ordinary boiler diaphragm type wall surface, with the purpose that realizes the surface modification, thereby prolong waste incinerator's life with minimum cost furthest.

In one embodiment, two sides of the work bench along the Y-axis direction are respectively provided with a first guide rail extending along the X-axis direction, and the gantry type welding frame comprises a gantry frame arranged on the first guide rail, a gantry frame driving device used for driving the gantry frame, a machine head frame arranged on a cross beam of the gantry frame and capable of moving along the Y-axis direction, and a machine head frame driving device used for driving the machine head frame.

In one embodiment, the machine head further comprises a machine head lifting mechanism, a machine head horizontal rotating mechanism and a left and right angle deflection mechanism, wherein the machine head lifting mechanism is arranged on the machine head frame and used for driving the laser welding head and the hot wire welding gun to move along the Z-axis direction, the machine head horizontal rotating mechanism is connected with the machine head lifting mechanism and used for driving the laser welding head and the hot wire welding gun to rotate in the horizontal plane, and the left and right angle deflection mechanism is connected with the machine head horizontal rotating mechanism and used for driving the laser welding head and the hot wire welding gun to rotate in the vertical plane.

In one embodiment, the machine head lifting mechanism comprises a sliding block capable of moving back and forth along the Z-axis direction and a lifting driving device which is arranged on the machine head frame and is used for driving the sliding block.

In one embodiment, the horizontal rotation mechanism of the machine head comprises a rotary driving motor and a cantilever, wherein the rotary driving motor is installed on the sliding block, an output shaft of the rotary driving motor extends downwards, and the upper end of the cantilever is connected with the output shaft of the rotary driving motor.

In one embodiment, the left and right angle deflection mechanism comprises a left and right angle deflection driving motor and a driving disc, the left and right angle deflection driving motor is mounted at the lower end of the cantilever, an output shaft of the left and right angle deflection driving motor is connected with the center of the driving disc, a mounting seat is arranged on the driving disc, and the laser welding head and the hot wire welding gun are mounted on the mounting seat.

In one embodiment, a clamping sleeve is sleeved outside the laser welding head, and the clamping sleeve is connected with the mounting seat through a connecting plate.

In one embodiment, the system further comprises an arc monitoring camera and a display device, wherein the arc monitoring camera is arranged on one side of the laser welding head and moves synchronously with the laser welding head, and the arc monitoring camera is connected with the display device.

In one embodiment, the hot wire welding gun is connected with a hot wire feeder, the hot wire heating device comprises an ultrahigh frequency pulse power supply, the positive electrode output end of the ultrahigh frequency pulse power supply is connected with the hot wire feeder, and the negative electrode output end of the ultrahigh frequency pulse power supply is connected with a workpiece.

In one embodiment, the working frequency of the ultrahigh frequency pulse power supply is 19 kHz-41 kHz.

The advantageous effects of the additional features of the present invention will be explained in the detailed description of the preferred embodiments of the present description.

Drawings

Fig. 1 is a schematic perspective view of a membrane wall surfacing machine according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at I;

FIG. 3 is a perspective view of a head of the membrane wall build-up welder shown in FIG. 1;

FIG. 4 is an exploded view of the head of the membrane wall build-up welder shown in FIG. 1;

fig. 5 is a schematic diagram of a hot wire system of the membrane wall build-up welder shown in fig. 1.

Description of reference numerals: 11. a first guide rail; 12. a gantry; 121. a cross beam; 122. a support leg; 13. a working bench; 131. a through hole; 14. a headstock; 15. a second guide rail; 16. a workpiece; 17. a laser generator; 18. a hot wire feeder; 19. a control box; 21. a machine head lifting mechanism; 211. a slider; 22. a machine head horizontal rotating mechanism; 221. a rotary drive motor; 222. a cantilever; 23. deflecting left and right angles; 231. a left and right angle deflection drive motor; 232. a drive disc; 233. a mounting seat; 25. installing a jacket; 26. a laser welding head; 27. a connecting plate; 28. an arc camera; 29. a hot wire welding gun; 31. a hot wire power supply.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

Referring to fig. 1, a membrane wall surfacing machine according to one embodiment of the present invention comprises: the device comprises a working table frame 13, a gantry type welding frame, a machine head, a laser generator 17, a wire feeding mechanism, a hot wire heating device and a control system.

Wherein the work bench 13 is arranged horizontally and the work piece 16, such as a membrane wall, is placed on the work bench 13. The working platform frame 13 in this embodiment is a rectangular plate, and a plurality of square through holes 131 are formed in the rectangular plate. Because the work bench 13 is horizontally arranged, the workpiece 16 can be smoothly welded when being horizontally placed on the work bench 13, the limitation of the tool height of the vertical welding mode on the product length is avoided, the welding can be carried out in the reciprocating direction, the efficiency is improved exponentially compared with the efficiency that the vertical welding mode can only adopt one-way welding, and the problems or hidden dangers in various aspects such as efficiency, safety, quality and the like are effectively solved.

The gantry type welding stand is disposed above the work stage 13 and is movable in the X-axis direction with respect to the work stage 13. In this embodiment, two sides of the working gantry 13 along the Y-axis direction are respectively provided with a first guide rail 11 extending along the X-axis direction, and the gantry type welding frame is disposed on the two first guide rails 11. The gantry type welding frame includes a gantry 12, a gantry driving device (not shown), a headstock 14, and a headstock driving device (not shown), the gantry 12 includes a beam 121 extending along a Y-axis direction and two legs 122 extending downward from two ends of the beam 121, and wheels (not shown) engaged with the first guide rail 11 are disposed at lower ends of the two legs 122. The gantry driving device is connected with the gantry 12 and used for driving the gantry 12 to move along the X-axis direction. The headstock 14 is provided on a cross member 121 of the gantry 12 and can reciprocate in the Y-axis direction. Two second guide rails 15 extending in the Y-axis direction are provided on the side surfaces of the cross beam 121, and a guide groove (not shown) for engaging with the second guide rails 15 is provided on the head frame 14. The headstock driving device is connected to the headstock 14 for driving the headstock 14 to move.

The machine head is arranged on a machine head frame 14, the machine head comprises a laser welding head 26, a hot wire welding gun 29, a left-right angle deflection 23 mechanism, a machine head horizontal rotating mechanism 22 and a machine head lifting mechanism 21, the laser welding head 26 is connected with a laser generator 17 to form a laser system, and the laser welding head 26 is used for outputting laser beams to focus on the surface of the workpiece 16 to form a molten pool. In order to fix the laser welding head 26 conveniently, the clamping sleeve 25 is sleeved outside the laser welding head 26, and the clamping sleeve 25 is connected with the mounting seat 233 through the connecting plate 27. Preferably, the power of the laser welding head 26 is 4-10 kW, a high-power laser is used as a heat source, so that the cladding efficiency can be improved to the greatest extent, and meanwhile, due to the high energy density of the laser beam, the molten pool area can reach the temperature required by metal cladding instantly, so that the bonding strength between the surfacing layer and the base metal is ensured, the molten pool is easy to control, the forming is attractive, the whole heat input of the welding seam is small, and the deformation of the workpiece 16 is small.

A hot wire torch 29 is used to feed the wire to the weld puddle. A hot wire torch 29 is provided on one side of the laser welding head 26, and the hot wire torch 29 is also fixed to the mount 233. The hot wire welding gun 29 is connected to the hot wire feeder 18.

The left-right angle deflection 23 mechanism is used to drive the laser welding head 26 and the hot wire welding gun 29 to rotate in the vertical plane. The left-right angle deflection 23 mechanism comprises a left-right angle deflection driving motor 231 and a driving disc 232, wherein an output shaft of the left-right angle deflection driving motor 231 is connected with the center of the driving disc 232, and a mounting seat 233 is mounted on the driving disc 232.

The head horizontal rotation mechanism 22 is used to rotate the laser welding head 26 and the hot wire welding gun 29 in the horizontal plane to adjust the welding direction. The handpiece horizontal rotation mechanism 22 includes a rotation driving motor 221 and a cantilever 222, an output shaft of the rotation driving motor 221 extends downward, and an upper end of the cantilever 222 is connected with an output shaft of the rotation driving motor 221.

The head lifting mechanism 21 is used to drive the laser welding head 26 and the hot wire welding gun 29 to move in the Z-axis direction. Head lifting mechanism 21 includes a slider 211 movable back and forth in the Z-axis direction and a lifting drive device (not shown in the drawings) mounted on head frame 14 for driving slider 211.

Preferably, the handpiece further comprises an arc camera 28 and a display device (not shown in the figures), the arc camera 28 being connected to the display device. Because of the potential danger of the intense arc light of laser to operating personnel, the video real-time monitoring system formed by the arc monitoring camera and the display equipment can conveniently realize remote monitoring, thereby not only reducing the labor intensity and reducing the risk of arc light burn, but also observing the working state in the welding process at any time, adjusting parameters at any time and ensuring the welding quality.

The hot wire heating device is used for heating the welding wire. As shown in fig. 5, the hot wire heating device includes a hot wire power supply 31, a positive output end of the hot wire power supply 31 is connected to the hot wire feeder 18, and a negative output end is connected to the workpiece 16. The welding wire is heated by the hot wire heating device, compared with cold wire feeding, the hot welding is heated to be close to a melting point before being fed into the molten pool, so that the welding efficiency can be greatly improved, and the consumption of laser energy is reduced.

Preferably, the hot wire power supply 31 is an ultrahigh frequency pulse power supply, and the ultrahigh frequency pulse power supply is precisely heated by using high frequency heat, so that the problem that the influence of magnetic blow generated by magnetic field interference on the liquid state of a molten pool is avoided, and the welding seam is not smooth is avoided. Further preferably, the pulse frequency of the ultrahigh frequency pulse power supply is 19 kHz-41 kHz, so that the skin effect of high frequency current of the ultrahigh frequency pulse power supply can be utilized, the heating speed of the welding wire is increased, the heating temperature of the welding wire is more uniform, and the absorption rate of a molten pool to laser is further improved.

The control system comprises a control box 19, a control circuit is arranged in the control box 19, and the control circuit is connected with the laser generator 17, the hot wire power supply 31, the portal frame driving device and the headstock driving device.

The utility model discloses a diaphragm type wall surfacing machine during operation, the laser beam of laser welder head 26 output forms the molten bath at 16 surface focusing of work piece, the welding wire passes through the heating of hot wire heating device and send a to the molten bath through hot wire welder 29, laser welder head 26 and hot wire welder 29 can carry out the regulation of a plurality of dimensions around the molten bath, thereby make and send the silk position to adjust wantonly around the molten bath region, and make and send the silk angle to adjust around the arbitrary angle of laser welder head 26 rotation, the welding wire melts in the molten bath region under the effect of laser energy, the laser cladding processing to work piece 16 has been realized.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A membrane wall surfacing machine, comprising:

a work stage for fixing a workpiece;

a gantry-type welding stand which is arranged above the workbench stand and can move along the X-axis direction relative to the workbench stand;

the machine head is arranged on the gantry type welding frame and can move along the Y-axis direction relative to the working table frame, the machine head comprises a laser welding head and a hot wire welding gun, the laser welding head is used for outputting a laser beam to focus on the surface of the workpiece to form a molten pool, and the hot wire welding gun is used for conveying a welding wire to the molten pool;

a laser generator connected to the laser welding head;

a hot wire heating device for heating the welding wire; and

and the control system is connected with the laser generator and the hot wire heating device.

2. The film wall surfacing machine according to claim 1, wherein the work gantry is provided with a first rail extending in the X-axis direction on each of both sides in the Y-axis direction, and the gantry welding frame includes a gantry placed on the first rail, a gantry driving device for driving the gantry, a head frame provided on a cross member of the gantry and movable in the Y-axis direction, and a head frame driving device for driving the head frame.

3. The membrane wall surfacing machine according to claim 2, wherein the head further comprises a head lifting mechanism, a head horizontal rotating mechanism and a left and right angle deflecting mechanism, the head lifting mechanism is disposed on the head frame for driving the laser welding head and the hot wire welding gun to move along the Z-axis direction, the head horizontal rotating mechanism is connected with the head lifting mechanism for driving the laser welding head and the hot wire welding gun to rotate in a horizontal plane, and the left and right angle deflecting mechanism is connected with the head horizontal rotating mechanism for driving the laser welding head and the hot wire welding gun to rotate in a vertical plane.

4. A membrane wall surfacing machine according to claim 3 wherein the head lift mechanism comprises a slide movable back and forth in the Z axis direction and a lift drive mounted on the head frame for driving the slide.

5. The membrane wall surfacing machine according to claim 4, wherein the head horizontal rotation mechanism comprises a rotary drive motor mounted on the slide block and having an output shaft extending downwardly and a cantilever having an upper end connected to the output shaft of the rotary drive motor.

6. The membrane wall surfacing machine according to claim 5, wherein the left and right angle deflection mechanism comprises a left and right angle deflection drive motor mounted at the lower end of the cantilever and a drive plate having an output shaft connected to the center of the drive plate, the drive plate having a mounting seat on which the laser welding head and the hot wire welding gun are mounted.

7. A membrane wall surfacing machine according to claim 6, wherein the laser welding head is externally sleeved with a jacketing sleeve, the jacketing sleeve being connected to the mounting base by a connecting plate.

8. A membrane wall surfacing machine according to claim 1 further comprising an arc monitoring camera disposed to one side of the laser welding head and moving in synchronism with the laser welding head and a display device connected to the arc monitoring camera.

9. The membrane wall surfacing machine according to claim 1, wherein the hot wire welding torch is connected to a hot wire feeder, and the hot wire heating device comprises an ultra high frequency pulsed power supply having a positive output connected to the hot wire feeder and a negative output connected to the workpiece.

10. The membrane wall surfacing machine according to claim 9, wherein the operating frequency of the ultra high frequency pulsed power supply is 19kHz to 41 kHz.