CN111822818B - Method for automatically surfacing reducing pipe by using novel surfacing equipment - Google Patents
Method for automatically surfacing reducing pipe by using novel surfacing equipment Download PDFInfo
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- CN111822818B CN111822818B CN202010705639.5A CN202010705639A CN111822818B CN 111822818 B CN111822818 B CN 111822818B CN 202010705639 A CN202010705639 A CN 202010705639A CN 111822818 B CN111822818 B CN 111822818B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims description 119
- 238000005498 polishing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000002789 length control Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010790 dilution Methods 0.000 abstract description 4
- 239000012895 dilution Substances 0.000 abstract description 4
- 238000004898 kneading Methods 0.000 description 3
- 238000005552 hardfacing Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a method for automatically surfacing a reducing pipe by using novel surfacing equipment. After the setting, the equipment can automatically calculate the linear speed of the reducing area in the surfacing process, the reducing area is subjected to surfacing in a non-arc-stopping state, the surfacing thickness is uniform and consistent, and the dilution rate is effectively controlled.
Description
Technical Field
The invention relates to a method for overlaying a reducing pipe, in particular to a method for automatically overlaying the reducing pipe by using novel overlaying equipment.
Background
In the surfacing industry, aiming at surfacing operation of the reducing pipe fitting, as for domestic existing equipment, automatic welding cannot be realized in a reducing area, because the diameter of each height is inconsistent when surfacing is carried out from a small-diameter area to the reducing area, the existing surfacing equipment cannot identify the actual linear velocity of the area, and an operator must stop arc; if the equipment setting is not modified again, the thickness of the welding seam is inconsistent due to inconsistent linear velocity in the process of overlaying the reducing area, the overlaying quality is affected, the dilution rate of the welding seam cannot be controlled, and the operation difficulty of operators is increased.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects and shortcomings of the prior art, the invention provides a method for automatically surfacing the reducing pipe by using novel surfacing equipment.
The technical scheme is as follows: the invention discloses a method for automatically surfacing a reducing pipe by using novel surfacing equipment, which is characterized by comprising the following steps of: the method comprises the following steps:
1) placing the reducing pipe on a rotary table of the novel surfacing equipment; the large-diameter pipe area of the reducing pipe is positioned above the small-diameter pipe area, and the small-diameter pipe area is positioned below the large-diameter pipe area;
2) turning on a main power supply, a welding power supply and welding protective gas, entering a workpiece surfacing mode interface on a remote controller after the equipment is started and stably operates, and selecting a reducing pipe surfacing mode;
3) inputting corresponding sizes of the reducing pipes in a surfacing mode of the reducing pipes, wherein the sizes comprise the height and the diameter of a large-diameter pipe area, the height and the diameter of a small-diameter pipe area and the height and the diameter of a reducing pipe area;
4) controlling the movable cross beam through a remote controller, moving the welding gun to an upper point of the reducing pipe workpiece, and rotating the rotary table to perform circle calibration on the welding gun and the reducing pipe workpiece;
5) moving the welding gun to a lower counter point of the reducing pipe workpiece, calibrating through a remote controller, and calibrating the height in the height of the vertical beam;
6) moving the welding gun to the upper end of the special pipe workpiece, and inputting the total height of the reducing pipe;
7) after the position is marked, the remote controller returns to an automatic interface, and welding parameters are input, wherein the welding parameters comprise welding speed of 28 cm/min-30 cm/min, wire feeding speed of 1.8 m/min-2.0 m/min, welding voltage of 12V-15V, hot wire current of 40A-60A, hot wire voltage of 5V-6V, pulse frequency of 2.5Hz, duty ratio of 60%, arc voltage tracking precision of 0.5V, arc voltage regulation increment of 0.1V and back of 2.0mm after welding;
8) and (5) starting welding, and designing a welding route by the novel surfacing equipment according to the size of the reducing pipe until surfacing is completed.
The method comprises the following steps of (1) grinding and cleaning the surface of a region to be welded before welding the reducing pipe, and removing impurities and oxides on the surface of a workpiece; the louver blades are installed on an electric angle grinder to be ground, after grinding, cleaning cloth soaked by acetone is used for wiping a grinding area, and the residual impurities after grinding are removed.
Wherein the inner diameter of the nozzle of the welding gun in the step (4) is 12mm,the tungsten needle is
Cerium and tungsten, wherein the gas is Ar gas, the gas flow is 12L/min-15L/min, and the wire feeding mode is front wire feeding.
The novel rotary table of the surfacing equipment comprises a base part, a scribing part, a welding part and an equipment control system part; the base part comprises a bottom plate, and a plurality of horizontal adjusting brackets are arranged at the bottom of the bottom plate; the partition part comprises a fixing column, a cross beam and a vertical beam which are movably connected with each other; the welding part comprises a welding power supply, a wire feeder, a high-frequency generating device, a welding gun and a fixed support; the equipment control system part comprises a rotary table, a control cabinet and a remote controller.
The vertical beam is positioned above the fixed column and is connected with the cross beam in an embedded mode through a groove in the fixed plate, the vertical beam is provided with a vertical rack, and the vertical beam is matched with the kneading rotation of the vertical rack through a second servo motor on the vertical beam to achieve the up-and-down movement of the cross beam; the transverse beam is provided with a transverse rack and is matched with the transverse rack to knead and rotate through a first servo motor on the transverse beam so as to realize the left and right movement of the transverse beam.
The welding power supply is positioned above the bottom plate and is respectively connected with the wire feeder and the high-frequency generating device through data lines; the fixed bracket is connected with the cross beam and is provided with a wire feeding disc; the welding gun is connected with the fixed support through the fixed buckle, and the end part of the welding gun is connected with the wire feeder; the fixing buckle and the welding gun are positioned on the same center line.
The control cabinet is provided with a power supply main switch, a screen, an emergency stop button and a status indicator lamp, is connected with the remote controller through a data line, and is connected with the first servo motor and the second servo motor through data lines respectively; the turntable is positioned above the bottom plate, a carbon brush and a motor are arranged in the turntable, the motor is connected with the control cabinet through a power line, and the carbon brush is connected with a ground wire of a welding power supply; the rotary table and the welding gun are positioned on the same central line.
The high-frequency generating device is fixedly connected with the fixed support through a first connecting plate; the wire feeder is fixedly connected with the fixed support through a second connecting plate.
When the rotary table of the novel surfacing equipment is used, the method comprises the following steps:
1) the welding configuration adopts a FRONIUS TT5000 DC TIG welding power supply which is a TT5000 constant voltage power supply, the constant voltage of a welding arc is less than or equal to 0.5V, and the rated current is 400-500A; the water tank is matched with a Fronius FK4000 original water tank, and the water flow is 6L/min-7L/min; the wire feeder is matched with FRONIUS KD1500D-11, rated wire feeding speed is 0-22M/min, and a TT2200 hot wire power supply is added;
2) the stroke equipment adopts novel compact equipment for surfacing, a servo upright post has a vertical lifting stroke of 1200-1500 mm, a servo cross beam has a horizontal telescopic stroke of 1200-1300 mm; the bearing capacity of the rotary table is less than or equal to 5000Kg, and the diameter of the table top of the rotary table
The rotating speed is 0.039 rpm-3.9 rpm;
3) the PLC control system consists of a Simens PLC logic programming, a Profinet bus communication interface and an AVC arc length control function;
4) a power supply main switch on the control cabinet is turned on, a workpiece is placed on the rotary table, and the beam is controlled to move to the position of the workpiece through the remote controller;
5) searching a point position on the workpiece by using a welding gun, and then rotating the rotary table to perform circle correction until the workpiece, the rotary table and the welding gun are in the same circle center; and setting parameters of a specific corresponding workpiece by the remote controller, and carrying out surfacing.
The special pipe body comprises a large-diameter pipe area, a different-diameter pipe area and a small-diameter pipe area which are sequentially connected from top to bottom; an upper counter point is arranged at one end part of the top of the large-diameter pipe area, a lower counter point is arranged at one end part of the bottom of the large-diameter pipe area, and the lower counter point is positioned right below the upper counter point; the reducing pipe area is in a truncated cone shape with a wide upper part and a narrow lower part, and the inner side of the reducing pipe area is a build-up welding area; the build-up welding area is provided with a plurality of annular welding seams which are arranged in parallel side by side or are arranged in a stacked mode side by side.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: according to the invention, aiming at the reducing pipe needing surfacing welding, the sizes of different areas are input on a novel compact device for programming setting, and after the parameters of the reducing pipe are set, a welding gun on the device is used for carrying out circle correction on the workpiece, so that the reducing pipe and the welding gun on the surfacing welding device are ensured to be in the same circle center position. After the arrangement is finished, the equipment can automatically calculate the linear velocity of the reducing area in the process of overlaying, the reducing area is overlaid in the state of arc stopping, the thickness of overlaying is uniform and consistent, and the dilution rate is effectively controlled.
Drawings
FIG. 1 is a schematic structural view of the novel hardfacing apparatus of the present invention;
FIG. 2 is a schematic left view of the novel hardfacing apparatus of the present invention;
fig. 3 is a schematic structural view of the mechanical tube of the present invention;
FIG. 4 is a schematic diagram of the upper and lower pairs of points according to the present invention;
in the figure, 1 is a rotary table, 2 is a control cabinet, 3 is a screen, 4 is an emergency stop button, 5 is a status indicator lamp, 6 is a fixed column, 7 is a cross beam, 8 is a first servo motor, 9 is a wire feeding disc, 10 is a wire feeder, 11 is a fixed support, 12 is a fixed buckle, 13 is a welding gun, 14 is a vertical rack, 15 is a vertical beam, 16 is a remote controller, 17 is a bottom plate, 18 is a horizontal adjusting support, 19 is a high-frequency generating device, 20 is a second servo motor, 21 is a transverse rack, 22 is a welding power supply, 23 is a fixed plate, 24 is a first connecting plate, 25 is a power supply main switch, 26 is a second connecting plate, 27 is a build-up welding area, 28 is an upper point, and 29 is a lower point.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and the detailed description.
The invention discloses a method for automatically surfacing a reducing pipe by using novel surfacing equipment, which comprises the following steps of:
1) placing the reducing pipe on a rotary table 1 of novel surfacing equipment; the large-diameter pipe area of the reducing pipe is positioned above the small-diameter pipe area, and the small-diameter pipe area is positioned below the large-diameter pipe area;
2) turning on a main power supply, a welding power supply 22 and welding protective gas, entering a workpiece surfacing mode interface on the remote controller 16 after the equipment is started and stably operates, and selecting a different-diameter pipe surfacing mode;
3) inputting corresponding dimensions of the reducing pipe in a surfacing mode of the reducing pipe, wherein the dimensions comprise the height and the diameter of a large-diameter pipe area, the height and the diameter of a small-diameter pipe area and the height and the diameter of a reducing pipe area;
4) the movable beam 7 is controlled by the remote controller 16, the welding gun 13 is moved to an upper counter point 28 of the reducing pipe workpiece, and the rotary table 1 is rotated to perform circle calibration on the welding gun 13 and the reducing pipe workpiece;
5) moving the welding gun 13 to a lower counter point 29 of the reducing pipe workpiece, calibrating through a remote controller 16, and calibrating the height in the height of the vertical beam 15;
6) moving the welding gun 13 to the upper end of the special pipe workpiece, and inputting the total height of the reducing pipe;
7) after the position is marked, the remote controller 16 returns to an automatic interface, and welding parameters are input, wherein the welding parameters comprise welding speed of 28 cm/min-30 cm/min, wire feeding speed of 1.8 m/min-2.0 m/min, welding voltage of 12V-15V, hot wire current of 40A-60A, hot wire voltage of 5V-6V, pulse frequency of 2.5Hz, duty ratio of 60%, arc voltage tracking precision of 0.5V, arc voltage regulation increment of 0.1V and back of 2.0mm after welding;
8) and (5) starting welding, and designing a welding route by the novel surfacing equipment according to the size of the reducing pipe until surfacing is completed.
Polishing and cleaning the surface of a region to be welded before welding the reducing pipe in the step (1), and removing impurities and oxides on the surface of a workpiece; and (3) polishing the louver blades by using an electric angle grinder, and wiping the polishing area by using cleaning cloth soaked by acetone after polishing to remove residual impurities after polishing. In the step (4), the inner diameter of a nozzle of the welding gun 13 is 12mm, and the tungsten needle is selected
Cerium and tungsten are contained, the gas is Ar gas, the gas flow is 12L/min to 15L/min, and the wire feeding mode is front wire feeding.
The novel rotary table 1 of the surfacing equipment comprises a base part, a scribing part, a welding part and an equipment control system part; the base part comprises a bottom plate 17, and a plurality of horizontal adjusting brackets 18 are arranged at the bottom of the bottom plate 17; the partition part comprises a fixing column 6, a cross beam 7 and a vertical beam 15 which are movably connected with each other; the welding part comprises a welding power supply 22, a wire feeder 10, a high-frequency generating device 19, a welding gun 13 and a fixed bracket 11; the equipment control system part comprises a rotary table 1, a control cabinet 2 and a remote controller 16. The vertical beam 15 is positioned above the fixed column 6, the vertical beam 15 is connected with the cross beam 7 in an embedded mode through a groove in the fixed plate 23, the vertical beam 15 is provided with a vertical rack 14, and the vertical beam 15 is matched with the kneading rotation of the vertical rack 14 through a second servo motor 20 on the vertical beam 15 to achieve the up-and-down movement of the cross beam 7; the transverse beam 7 is provided with a transverse rack 21, and the transverse rack 21 is matched with the first servo motor 8 on the transverse beam 7 to rotate in a kneading mode to realize the left-right movement of the transverse beam 7. The welding power supply 22 is positioned above the bottom plate 17, and the welding power supply 22 is respectively connected with the wire feeder 10 and the high-frequency generating device 19 through data lines; the fixed support 11 is connected with the beam 7, and the fixed support 11 is provided with a wire feeding disc 9; the welding gun 13 is connected with the fixed support 11 through the fixed buckle 12, and the end part of the welding gun 13 is connected with the wire feeder 10; the fixing buckle 12 and the welding gun 13 are positioned on the same center line. The control cabinet 2 is provided with a power supply main switch 25, a screen 3, an emergency stop button 4 and a status indicator lamp 5, the control cabinet 2 is connected with the remote controller 16 through data lines, and the control cabinet 2 is respectively connected with the first servo motor 8 and the second servo motor 20 through data lines; the rotary table 1 is positioned above the bottom plate 17, a carbon brush and a motor are arranged in the rotary table 1, the motor is connected with the control cabinet 2 through a power line, and the carbon brush is connected with a ground wire of the welding power supply 22; the turntable 1 is located on the same center line as the welding gun 13. The high-frequency generating device 19 is fixedly connected with the fixed bracket 11 through a first connecting plate 24; the wire feeder 10 is fixedly connected with the fixed bracket 11 through a second connecting plate 26.
When the rotary table 1 of the novel surfacing equipment is used, the method comprises the following steps:
1) the welding configuration adopts a FRONIUS TT5000 DC TIG welding power supply 22, the welding power supply 22 is a TT5000 constant voltage power supply, the constant voltage of a welding arc is less than or equal to 0.5V, and the rated current is 400-500A; the water tank is matched with a Fronius FK4000 original water tank, and the water flow is 6L/min-7L/min; the wire feeder 10 is matched with FRONIUS KD1500D-11, rated wire feeding speed is 0-22M/min, and TT2200 hot wire power supply is added;
2) the stroke equipment adopts novel compact equipment for surfacing, a servo upright post has a vertical lifting stroke of 1200-1500 mm, a servo cross beam has a horizontal telescopic stroke of 1200-1300 mm; the bearing of the rotary table 1 is less than or equal to 5000Kg, and the diameter of the table top of the rotary table 1
The rotating speed is 0.039 rpm-3.9 rpm;
3) the PLC control system consists of a Simens PLC logic programming, a Profinet bus communication interface and an AVC arc length control function;
4) a power supply main switch 25 on the control cabinet 2 is turned on, a workpiece is placed on the rotary table 1, and the beam 7 is controlled to move to the workpiece position through the remote controller 16;
5) searching a point position on the workpiece by using the welding gun 13, and then rotating the rotary table 1 to perform circle calibration until the workpiece is at the same circle center as the rotary table 1 and the welding gun 13; the remote controller 16 sets parameters of a specific corresponding workpiece for surfacing.
The special pipe body comprises a large-diameter pipe area, a reducing pipe area and a small-diameter pipe area which are sequentially connected from top to bottom; an upper counter point 28 is arranged at one end part of the top of the large-diameter pipe area, a lower counter point 29 is arranged at one end part of the bottom of the large-diameter pipe area, and the lower counter point 29 is positioned right below the upper counter point 28; the reducing pipe area is in a shape of a circular truncated cone with a wide upper part and a narrow lower part, and the inner side of the reducing pipe area is a surfacing area 27; the build-up welding zone 27 is provided with a plurality of annular welding seams which are arranged side by side in parallel or side by side in a superimposed manner.
Wherein, the center distance between the welding seams of the overlaying region 27 is 2.5 mm-3.5 mm. The thickness of the weld bead in the overlaying area 27 is 1.5 mm-2.5 mm. The welding seams of the overlaying area 27 are arranged side by side in an overlapping mode, and 2-3 welding seam layers and the welding seams of the adjacent welding seam layers are arranged in a staggered mode. The weld of the build-up weld zone 27 is a 625 nickel alloy weld.
According to the invention, for the reducing pipe needing surfacing welding, the sizes of different areas are input on a novel compact device for programming setting, after the parameters of the reducing pipe are set, a welding gun 13 on the device is used for calibrating the circle of the workpiece, and the reducing pipe and the welding gun 13 on the surfacing welding device are ensured to be in the same circle center position. After the arrangement is finished, the equipment can automatically calculate the linear velocity of the reducing area in the process of overlaying, the reducing area is overlaid in the state of arc stopping, the thickness of overlaying is uniform and consistent, and the dilution rate is effectively controlled.
Claims (4)
1. A method for automatically surfacing a reducing pipe by using novel surfacing equipment is characterized by comprising the following steps of: the method comprises the following steps:
1) placing the reducing pipe on a rotary table (1) of novel surfacing equipment; the large-diameter pipe area of the reducing pipe is positioned above the small-diameter pipe area, and the small-diameter pipe area is positioned below the large-diameter pipe area; the novel surfacing equipment comprises a base part, a scribing part, a welding part and an equipment control system part; the base part comprises a bottom plate (17) and a plurality of horizontal adjusting brackets (18) are arranged at the bottom of the bottom plate (17); the dividing part comprises a fixing column (6), a cross beam (7) and a vertical beam (15) which are movably connected with each other; the welding part comprises a welding power supply (22), a wire feeder (10), a high-frequency generating device (19), a welding gun (13) and a fixed support (11); the equipment control system part comprises a rotary table (1), a control cabinet (2) and a remote controller (16); the vertical beam (15) is positioned above the fixing column (6), the vertical beam (15) is connected with the cross beam (7) in an embedded mode through a groove in the fixing plate (23), a vertical rack (14) is arranged on the vertical beam (15), and the vertical beam (15) is matched with a second servo motor (20) in the vertical beam (15) to rotate in a meshed mode to achieve up-and-down movement of the cross beam (7); the transverse beam (7) is provided with a transverse rack (21) and is matched with the transverse rack (21) to rotate in an engaged manner through a first servo motor (8) on the transverse beam (7) so as to realize the left-right movement of the transverse beam (7); the welding power supply (22) is positioned above the bottom plate (17), and the welding power supply (22) is respectively connected with the wire feeder (10) and the high-frequency generating device (19) through data lines; the fixed support (11) is connected with the cross beam (7) and the wire feeding disc (9) is arranged on the fixed support (11); the welding gun (13) is connected with the fixed support (11) through the fixed buckle (12), and the end part of the welding gun (13) is connected with the wire feeder (10); the fixing buckle (12) and the welding gun (13) are positioned on the same central line; the control cabinet (2) is provided with a power supply main switch (25), a screen (3), an emergency stop button (4) and a status indicator lamp (5), the control cabinet (2) is connected with a remote controller (16) through a data line, and the control cabinet (2) is connected with a first servo motor (8) and a second servo motor (20) through data lines respectively; the turntable (1) is positioned above the bottom plate (17), a carbon brush and a motor are arranged in the turntable (1), the motor is connected with the control cabinet (2) through a power line, and the carbon brush is connected with a ground wire of the welding power supply (22); the rotary table (1) and the welding gun (13) are positioned on the same central line;
2) turning on a main power supply, a welding power supply (22) and welding protective gas, entering a workpiece surfacing mode interface on a remote controller (16) after the equipment is started and stably operates, and selecting a different-diameter pipe surfacing mode;
3) inputting corresponding sizes of the reducing pipes in a surfacing mode of the reducing pipes, wherein the sizes comprise the height and the diameter of a large-diameter pipe area, the height and the diameter of a small-diameter pipe area and the height and the diameter of a reducing pipe area;
4) the movable cross beam (7) is controlled by a remote controller (16), the welding gun (13) is moved to an upper point (28) of the reducing pipe workpiece, and the rotary table (1) is rotated to perform circle calibration on the welding gun (13) and the reducing pipe workpiece;
5) moving the welding gun (13) to a lower counter point (29) of the reducing pipe workpiece, calibrating through a remote controller (16), and calibrating the height in the height of the vertical beam (15);
6) moving a welding gun (13) to the upper end of the special pipe workpiece, and inputting the total height of the reducing pipe;
7) after the position is marked, the remote controller (16) returns to an automatic interface, and input welding parameters comprise welding speed of 28 cm/min-30 cm/min, wire feeding speed of 1.8 m/min-2.0 m/min, welding voltage of 12V-15V, hot wire current of 40A-60A, hot wire voltage of 5V-6V, pulse frequency of 2.5Hz, duty ratio of 60%, arc voltage tracking precision of 0.5V, arc voltage regulation increment of 0.1V and back-off of 2.0mm after welding;
8) starting welding, and designing a welding route by the novel surfacing equipment according to the size of the reducing pipe until surfacing is completed;
the obtained special pipe body comprises a large-diameter pipe area, a reducing pipe area and a small-diameter pipe area which are sequentially connected from top to bottom; an upper counter point (28) is arranged at one end part of the top of the large-diameter pipe area, a lower counter point (29) is arranged at one end part of the bottom of the large-diameter pipe area, and the lower counter point (29) is positioned right below the upper counter point (28); the reducing pipe area is in a truncated cone shape with a wide upper part and a narrow lower part, and the inner side of the reducing pipe area is a build-up welding area (27); the overlaying area (27) is provided with a plurality of annular welding seams which are arranged in parallel side by side or overlapped side by side;
when the novel surfacing equipment is used, the novel surfacing equipment comprises the following steps:
1) the welding configuration adopts a FRONIUS TT5000 DC TIG welding power supply (22), the welding power supply (22) is a TT5000 constant voltage power supply, the constant voltage of a welding arc is less than or equal to 0.5V, and the rated current is 400-500A; the water tank is matched with a Fronius FK4000 original water tank, and the water flow is 6L/min-7L/min; the wire feeder (10) is matched with FRONIUS KD1500D-11, the rated wire feeding speed is 0-22M/min, and a TT2200 hot wire power supply is added;
2) the stroke equipment adopts novel compact equipment for surfacing, a servo upright post has a vertical lifting stroke of 1200-1500 mm, a servo cross beam has a horizontal telescopic stroke of 1200-1300 mm; the bearing capacity of the rotary table (1) is less than or equal to 5000Kg, the diameter phi of the table top of the rotary table (1) is 1200 mm-1400 mm, and the rotating speed is 0.039 rpm-3.9 rpm;
3) the PLC control system consists of a Simens PLC logic programming, a Profinet bus communication interface and an AVC arc length control function;
4) a power supply main switch (25) on the control cabinet (2) is turned on, a workpiece is placed on the rotary table (1), and the beam (7) is controlled to move to the position of the workpiece through a remote controller (16);
5) searching a point position on the workpiece by using a welding gun (13), and then rotating the rotary table (1) to perform circle calibration until the workpiece, the rotary table (1) and the welding gun (13) are in the same circle center; the remote controller (16) sets parameters of a specific corresponding workpiece for surfacing.
2. The method for automatically surfacing a reducing pipe by using the novel surfacing equipment according to claim 1, wherein the method comprises the following steps: the reducing pipe in the step 1) is polished and cleaned before welding, and impurities and oxides on the surface of a workpiece are removed; and (3) polishing the louver blades by using an electric angle grinder, and wiping the polishing area by using cleaning cloth soaked by acetone after polishing to remove residual impurities after polishing.
3. The method for automatically surfacing a reducing pipe by using the novel surfacing equipment according to claim 1, wherein the method comprises the following steps: in the step 4), the gun head of the welding gun (13) is selected from 12mm tungsten with the nozzle inner diameterThe needle is
Cerium and tungsten, wherein the gas is Ar gas, the gas flow is 12L/min-15L/min, and the wire feeding mode is front wire feeding.
4. The method for automatically surfacing a reducing pipe by using the novel surfacing equipment according to claim 1, wherein the method comprises the following steps: the high-frequency generating device (19) is fixedly connected with the fixed support (11) through a first connecting plate (24); the wire feeder (10) is fixedly connected with the fixed support (11) through a second connecting plate (26).
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| CN202010705639.5A CN111822818B (en) | 2020-07-21 | 2020-07-21 | Method for automatically surfacing reducing pipe by using novel surfacing equipment |
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| CN111730173A (en) * | 2020-07-21 | 2020-10-02 | 福尼斯(南京)表面工程技术有限公司 | A new type of compact equipment for surfacing welding and using method thereof |
| CN112846459A (en) * | 2020-12-31 | 2021-05-28 | 福尼斯(南京)表面工程技术有限公司 | Method for welding chemical tube plate by variable-polarity double tungsten electrodes |
| CN114799424A (en) * | 2022-05-10 | 2022-07-29 | 南京迪威尔高端制造股份有限公司 | Welding method for inner hole of cylindrical part of underwater Christmas tree |
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| KR100950665B1 (en) * | 2005-06-17 | 2010-04-02 | 현대중공업 주식회사 | Welding apparatus for multi-electrode development inside and outside of pressure vessel |
| CN101804493B (en) * | 2010-02-17 | 2011-09-21 | 中国第一重型机械股份公司 | Automatic bead welding equipment of saddle-shaped pipe joint surface with conical table and welding method thereof |
| CN204621313U (en) * | 2015-05-27 | 2015-09-09 | 南京英尼格玛工业自动化技术有限公司 | A kind of tracking device for welding of pipeline overlaying system |
| CN204986122U (en) * | 2015-09-22 | 2016-01-20 | 郑州万达重工股份有限公司 | Concentric reducing union of inner surface -welding bimetal |
| CN108544055B (en) * | 2018-04-14 | 2020-06-30 | 上海中船三井造船柴油机有限公司 | Full-automatic surfacing method for 58% nickel-based alloy in groove of combustion chamber of cylinder cover |
| CN110125515B (en) * | 2019-04-24 | 2021-11-16 | 武汉船用机械有限责任公司 | Nickel alloy surfacing method |
| CN111168199A (en) * | 2020-02-25 | 2020-05-19 | 福尼斯(南京)表面工程技术有限公司 | Automatic welding method for welding blowout preventer piston and piston connecting rod wear-resistant layer |
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