CN116713560B - Nondestructive testing control welding method based on digital model - Google Patents
Nondestructive testing control welding method based on digital model Download PDFInfo
- Publication number
- CN116713560B CN116713560B CN202311002041.XA CN202311002041A CN116713560B CN 116713560 B CN116713560 B CN 116713560B CN 202311002041 A CN202311002041 A CN 202311002041A CN 116713560 B CN116713560 B CN 116713560B
- Authority
- CN
- China
- Prior art keywords
- welding
- grid
- dimensional
- welded
- coordinate data
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 288
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 63
- 230000001681 protective effect Effects 0.000 claims description 22
- 230000001052 transient effect Effects 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 7
- 230000001066 destructive effect Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 17
- 239000001301 oxygen Substances 0.000 description 17
- 229910052760 oxygen Inorganic materials 0.000 description 17
- 229910052786 argon Inorganic materials 0.000 description 8
- 230000004927 fusion Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- B23K9/095—Monitoring or automatic control of welding parameters
-
- 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
-
- 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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to the technical field of narrow gap welding, in particular to a nondestructive testing control welding method based on a digital model, which comprises the following steps: the method comprises the steps of obtaining a three-dimensional contour model of a region to be welded and corresponding space coordinate data, dividing the three-dimensional contour model of the region to be welded into a plurality of uniform welding blocks, dividing the welding blocks into a plurality of welding sheet layers with the same height, and forming a welding grid by each welding sheet layer; inputting a plurality of welding grids of each welding block and corresponding space coordinate data to a control module; the invention decomposes the whole welding area into a plurality of welding blocks when welding, each welding block is correspondingly divided into a plurality of layers, when welding, the welding of the next layer is carried out after the welding of one layer is finished, the welding stroke of each layer is set, the moving track and the moving speed of a welding gun are planned in each welding stroke, and the welding gun stroke is controlled according to the set moving track and moving speed.
Description
Technical Field
The invention relates to the technical field of narrow-gap welding, in particular to a nondestructive testing control welding method based on a digital model.
Background
When the industrial pipelines are butted, the welding positions among the pipelines are very narrow, and very precise welding control is required in the welding process, and the current narrow-gap welding method is an efficient welding method for finishing the whole welding seam by adopting consumable electrode gas shielded welding or two-buried arc welding, wherein the butt joint of the pipelines is not beveled or is beveled only by a small angle before welding, and a narrow and deep gap is reserved. However, because the melting temperature rises too slowly to cause poor fusion of the side walls during welding, slag inclusion is easy to form after welding, at present, some schemes adopt multi-element gas for fusion welding, such as argon and oxygen, wherein oxygen is combustion-supporting gas, when combustible gas and oxygen are mixed for combustion, a large amount of heat is released, high-temperature flame with concentrated heat is formed (the highest temperature in the flame can reach 2000-3000 ℃), metal can be heated and melted, the technical problems that the poor fusion of the side walls is caused by too slow temperature rise and slag inclusion is easy to form after welding can be solved, but new technical problems are brought along with the poor fusion, and when the temperature reaches the set requirement during welding, the existence of oxygen is easy to cause partial oxidation of welding.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a non-destructive inspection control welding method based on a digital model.
In order to achieve the above object, the present invention provides a non-destructive testing control welding method based on a digital model, comprising the steps of:
the method comprises the steps of obtaining a three-dimensional contour model of a region to be welded and corresponding space coordinate data, dividing the three-dimensional contour model of the region to be welded into a plurality of uniform welding blocks, dividing the welding blocks into a plurality of welding sheet layers with the same height, and forming a welding grid by each welding sheet layer;
inputting a plurality of welding grids of each welding block and corresponding space coordinate data to a control module;
setting a digital model, setting transient pressures of two protective gases in the welding process and setting welding power in the welding process through the digital model; forming a protection for a welding position in a welding process of each welding grid by controlling an interval mode of two shielding gases in the welding process, comprising:
and acquiring welding grids, configuring a moving track and a moving speed of a welding gun in one welding stroke by a digital model based on space coordinate data corresponding to the welding grids, and setting a control instruction of intermittent blowing of two shielding gases and a transient pressure of each shielding gas in each welding stroke based on the moving track and the moving speed.
Further, the three-dimensional contour model of the to-be-welded area is obtained according to the following method:
placing a weldment on a base station and forming positioning, acquiring three-dimensional scanning data of the weldment by using a three-dimensional scanner, constructing a three-dimensional contour of the weldment by using the three-dimensional scanning data, and calibrating a region to be welded and three-dimensional coordinate data of the region to be welded in the three-dimensional contour of the weldment;
and carrying out reverse modeling on the to-be-welded area by taking the three-dimensional profile of the weldment as a reference, constructing a to-be-welded area three-dimensional profile model, and forming space coordinate data of the to-be-welded area three-dimensional profile model by taking the three-dimensional coordinate data of the to-be-welded area as a reference.
Further, the welding grid is formed according to the following method:
dividing the three-dimensional contour model of the area to be welded into a plurality of uniform welding blocks by taking the upper plane of the three-dimensional contour model of the area to be welded as a reference, recording the serial number of each welding block, dividing the welding block into a plurality of welding sheet layers with the same height based on the space coordinate data, setting a plurality of positioning points on each welding sheet layer, taking the space coordinate data as a reference, and dividing the welding sheet layers into a welding grid by taking a plurality of positioning points as starting points, passing points and ending points.
Further, the method further comprises the following steps: and acquiring welding grid three-dimensional scanning data of each welded grid after welding by using a three-dimensional scanner, constructing a welding grid three-dimensional contour based on the welding grid three-dimensional scanning data, calling the corresponding welding grid and the space coordinate data matched with the welding grid to compare with the welding grid three-dimensional contour, and carrying out corresponding correction on welding of the three-dimensional grid through the comparison result.
Further, the control instruction is set according to the following rule:
a welding gun movement rule, configured to set a plurality of calibration points in the welding grid, configure a start point, a pass point and an end point in each welding stroke with the plurality of calibration points, and write position data corresponding to the start point, the pass point and the end point in each welding stroke into a setting program, and configure a welding gun movement control instruction and a movement speed control instruction in each welding stroke through the setting program;
the interval mode setting rule is used for decomposing the moving track according to a starting point, a passing point and a terminal point based on the moving track and the moving speed of the welding gun in each welding stroke, and then respectively setting the switching among different shielding gases in the process of welding the starting point, the passing point and the terminal point, so as to configure control instructions when the two shielding gases are switched; and simultaneously setting control instructions of transient pressure of different protective gases when blowing.
Further, the calibration point is set as follows:
dividing a three-dimensional contour model of a region to be welded into a plurality of uniform welding blocks, wherein each welding block is a cube, and dividing each welding block into a plurality of welding grids with the same height according to the welding height; wherein the upper surface of each welding grid is square;
and determining coordinate data information of each welding grid by using the space coordinate data, taking the size of a welding spot formed by one spot welding as a measurement unit of the welding spot during welding, and setting a plurality of calibration points on the welding grid by using the size of the welding spot.
The invention decomposes the whole welding area into a plurality of welding blocks when welding, each welding block is correspondingly divided into a plurality of layers, when welding, the welding of the next layer is carried out after the welding of one layer is finished, the welding stroke of each layer is set, the moving track and the moving speed of a welding gun are planned in each welding stroke, and the welding gun stroke is controlled according to the set moving track and moving speed.
The invention also sets the transient pressure of two protective gases in the welding process, and sets the interval mode of the two protective gases in the welding process, thereby forming protection for the welding position of each welding grid in the welding process.
Drawings
FIG. 1 is a schematic diagram of a device according to the present invention;
FIG. 2 is a flow chart of the method of the present invention;
FIG. 3 is a flow chart of a method for forming a three-dimensional contour model of a region to be welded according to the present invention;
FIG. 4 is a flow chart of a method of index point formation according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to implement the present invention, it should be noted that the present invention provides a non-destructive testing control welding device based on a digital model, including:
the moving part can be a multi-axis mechanical arm or a moving tool with X, Y, Z three-axis compound movement; can be selected and used according to actual needs.
A welding gun assembly comprising a nozzle configured to: the welding rod feeding device comprises an outer nozzle pipe 11, wherein a first gas channel 13 through which a first protective gas flows is arranged in the outer nozzle pipe 11, a built-in pipe is arranged in the first gas channel 13, a welding rod conveying pipe 16 is arranged in the built-in pipe, and a second gas channel 12 through which a second protective gas flows is formed between the built-in pipe and the welding rod conveying pipe 16;
argon gas passes through the argon gas bottle 6 and is connected to the air inlet of first gas channel 13 through first pipeline, and is provided with first solenoid valve 90 and first control valve 9 on the first pipeline, can realize closing or opening of gas circuit through controlling first solenoid valve 90, can realize the size of the flow of entering to the inside argon gas of first gas channel 13 through controlling first control valve 9, in order to further can control the transient pressure of input argon gas, be provided with first force (forcing) pump 91 at the rear end of first control valve 9, first force (forcing) pump 91 can provide the settlement pressure to the argon gas in the first pipeline according to actual need.
Oxygen passes through the oxygen bottle 7 and is connected to the air inlet of second air flue 12 through the second pipeline, and is provided with second solenoid valve 80 and second control valve 8 on the second pipeline, can realize closing or opening of gas circuit through controlling second solenoid valve 80, can realize the size of the flow of entering to the inside oxygen of second air flue 12 through controlling second control valve 8, in order to further can control the transient pressure of input oxygen, be provided with second force (forcing) pump 81 at the rear end of second control valve 8, second force (forcing) pump 81 can provide the settlement pressure to the oxygen in the second pipeline according to actual need.
The welding rod 10 is arranged in the welding rod conveying pipe 16, the welding rod 10 can be conveyed to the welding rod conveying pipe 16 through the conveying wheel 17 according to a set conveying speed, wherein a conductive nozzle is arranged in the welding rod conveying pipe 16, and the conductive nozzle is connected to the power supply 5 through a conducting wire;
in the above, the purpose of the moving part is to move the welding gun assembly.
When the pipeline is welded, as shown in fig. 1, a butt joint part 3 is formed after the first pipeline 1 and the second pipeline 2 are in butt joint, the butt joint part 3 is actually a part which needs to be welded, and the welded part should be kept flat with the outer parts of the first pipeline 1 and the second pipeline 2 after welding; and the first pipe 1 and the second pipe 2 are pipes of a specification, and thus the butt joint portions 3 thereof are regular. When the butt joint part 3 is scanned by using the three-dimensional scanner, the three-dimensional contour of the butt joint part 3 can be constructed according to the scanning result of the butt joint part 3, and the butt joint part 3 can be reversely modeled by combining the outer walls of the first pipeline 1 and the second pipeline 2 to obtain the filling body 4 at the position of the butt joint part 3, wherein the filling body 4 is a welding spot formed by corresponding welding.
In the welding process, the transient pressure of two protective gases in the welding process is set, and the interval mode of the two protective gases in the welding process is controlled in the welding process, so that the welding position in the welding process of each welding grid is protected, in order to quickly reach the set temperature in the welding process, the combustion-supporting gas (argon is arranged on the periphery) is formed on the inner side of the argon, the argon forms a first protective zone 14 with a larger area on the lower part of the external nozzle pipe 11, for example, in fig. 1, the first protective zone 14 is positioned on the outer part of the butt joint part 3 and is used for isolating air, the second protective zone 15 is actually an oxygen conveying runner, oxygen can be used as combustion-supporting gas to quickly heat and melt metal, after the set temperature is reached, the gas can be selected not to be blown in, or the blowing-supporting quantity of the combustion-supporting gas is reduced, in particular, the gas path can be closed by controlling the second electromagnetic valve 80, or the second electromagnetic valve 80 is kept in the state, the combustion-supporting gas can be controlled to be opened, the large flow of the oxygen can be blown into the second electromagnetic valve 12, and the combustion-supporting gas can be effectively blown in the air path 12, and the purpose of effectively preventing the oxidation of the oxygen from being formed in the transient pressure in the process is also achieved. The transient pressure may be achieved by the first pressurizing pump 91 and the second pressurizing pump 81, which have been described above.
Based on the device, the invention provides a nondestructive testing control welding method based on a digital model, which comprises the following steps:
the method comprises the steps of obtaining a three-dimensional contour model of a region to be welded and corresponding space coordinate data, dividing the three-dimensional contour model of the region to be welded into a plurality of uniform welding blocks, dividing the welding blocks into a plurality of welding sheet layers with the same height, and forming a welding grid by each welding sheet layer;
inputting a plurality of welding grids of each welding block and corresponding space coordinate data to a control module;
setting a digital model, setting transient pressures of two protective gases in the welding process and setting welding power in the welding process through the digital model; by controlling the interval mode of the two shielding gases in the welding process, the welding position of each welding grid in the welding process is protected.
In the above, the three-dimensional profile of the to-be-welded area is obtained according to the following method:
placing a weldment on a base station and forming positioning, acquiring three-dimensional scanning data of the weldment by using a three-dimensional scanner, constructing a three-dimensional contour of the weldment by using the three-dimensional scanning data, and calibrating a region to be welded and three-dimensional coordinate data of the region to be welded in the three-dimensional contour of the weldment;
and carrying out reverse modeling on the to-be-welded area by taking the three-dimensional profile of the weldment as a reference, constructing a to-be-welded area three-dimensional profile model, and forming space coordinate data of the to-be-welded area three-dimensional profile model by taking the three-dimensional coordinate data of the to-be-welded area as a reference.
In the present invention, in order to facilitate the acquisition of data during welding of different pipes, corresponding acquisition may be performed by selecting a sample using a catheter, for example, the first pipe 1 and the second pipe 2 mentioned in the present invention may be real sizes of pipes in reality, or may be samples scaled according to a set ratio, and in any form, the corresponding three-dimensional scan data and the corresponding three-dimensional scan data of the butt-joint region after butt-joint may be acquired in a laboratory in advance, and the first model of the first pipe 1 and the second model of the second pipe 2, and the three-dimensional profile of the butt-joint region may be constructed according to the obtained three-dimensional scan data. Setting a space coordinate system in a corresponding modeling process, wherein three-dimensional scanning data takes a base station as a positioning surface; after the space coordinate transformation is carried out, the space coordinate data of the first model, the second model and the three-dimensional contour of the butt joint part (the region to be welded) can be obtained, and after reverse modeling, the three-dimensional contour model of the region to be welded is constructed.
In the above, the welding grid is formed according to the following method:
dividing the three-dimensional contour model of the area to be welded into a plurality of uniform welding blocks by taking the upper plane of the three-dimensional contour model of the area to be welded as a reference, recording the serial number of each welding block, dividing the welding block into a plurality of welding sheet layers with the same height based on the space coordinate data, setting a plurality of positioning points on each welding sheet layer, taking the space coordinate data as a reference, and dividing the welding sheet layers into a welding grid by taking a plurality of positioning points as starting points, passing points and ending points.
As mentioned above, since the first pipe 1 and the second pipe 2 are pipes of a specification, the butt joint portions 3 thereof are regular. When the butt joint part 3 is scanned by utilizing the three-dimensional scanner, the three-dimensional contour of the butt joint part 3 can be constructed according to the scanning result of the butt joint part 3, and the butt joint part 3 can be reversely modeled by combining the outer walls of the first pipeline 1 and the second pipeline 2, so that the obtained three-dimensional contour model of the to-be-welded area also has a regular shape, and the three-dimensional contour model of the to-be-welded area can be divided into a plurality of standard square blocks; correspondingly, the square blocks can be divided into equal-height square bodies again.
Further comprises: and acquiring welding grid three-dimensional scanning data of each welded grid after welding by using a three-dimensional scanner, constructing a welding grid three-dimensional contour based on the welding grid three-dimensional scanning data, calling the corresponding welding grid and the space coordinate data matched with the welding grid to compare with the welding grid three-dimensional contour, and carrying out corresponding correction on welding of the three-dimensional grid through the comparison result.
Further, a method for forming a shield for a welding position in a welding process of each welding grid by controlling a spacing pattern of two shielding gases in the welding process, comprising:
and acquiring welding grids, configuring the moving track and the moving speed of a welding gun in one welding stroke by a digital model based on the space coordinate data corresponding to the welding grids, and setting a control instruction of intermittent blowing of two shielding gases and the transient pressure of each shielding gas in each welding stroke based on the moving track and the moving speed.
Further, the control instruction is set according to the following rule:
a welding gun movement rule, configured to set a plurality of calibration points in the welding grid, configure a start point, a pass point and an end point in each welding stroke with the plurality of calibration points, and write position data corresponding to the start point, the pass point and the end point in each welding stroke into a setting program, and configure a welding gun movement control instruction and a movement speed control instruction in each welding stroke through the setting program;
the interval mode setting rule is used for decomposing the moving track according to a starting point, a passing point and a terminal point based on the moving track and the moving speed of the welding gun in each welding stroke, and then respectively setting the switching among different shielding gases in the process of welding the starting point, the passing point and the terminal point, so as to configure control instructions when the two shielding gases are switched; and simultaneously setting control instructions of transient pressure of different protective gases when blowing.
Further, the calibration point is set as follows:
dividing a three-dimensional contour model of a region to be welded into a plurality of uniform welding blocks, wherein each welding block is a cube, and dividing each welding block into a plurality of welding grids with the same height according to the welding height; wherein the upper surface of each welding grid is square;
and determining coordinate data information of each welding grid by using the space coordinate data, taking the size of a welding spot formed by one spot welding as a measurement unit of the welding spot during welding, and setting a plurality of calibration points on the welding grid by using the size of the welding spot.
The welding body obtained by the primary spot welding of the welding gun under the set rated current, voltage and standard temperature is used as the minimum measurement unit to obtain a certain amount of the primary spot welding body, the volume of each welding body is tested, and the average value of the primary spot welding bodies is obtained by obtaining the average value; and taking a standard block obtained by performing three-dimensional modeling simulation on a welding body obtained by one-time spot welding as a standard unit. The obtained standard block is input into a digital model, and a control model for gas regulation and control, which is obtained by training based on historical welding data (gas input quantity and transient pressure), is correspondingly arranged in the digital model.
The invention decomposes the whole welding area into a plurality of welding blocks when welding, each welding block is correspondingly divided into a plurality of layers, when welding, the welding of the next layer is carried out after the welding of one layer is finished, the welding stroke of each layer is set, the moving track and the moving speed of a welding gun are planned in each welding stroke, and the welding gun stroke is controlled according to the set moving track and moving speed.
In the invention, the transient pressure of two protective gases in the welding process is set, and the interval mode of the two protective gases in the welding process is controlled to form protection on the welding position in the welding process of each welding grid, during welding, in order to quickly reach the set temperature, the gas path is closed by controlling the second electromagnetic valve 80, or the second electromagnetic valve 80 is kept in an open state, a first protective zone 14 with a larger area is formed at the lower part of the outer nozzle pipe 11, for example, in fig. 1, the range of the first protective zone 14 is positioned outside the butt joint part 3 and is used for isolating air, a second protective zone 15 is arranged in the first protective zone 14, the second protective zone is actually an oxygen conveying runner, oxygen can be used as combustion-supporting gas to quickly heat and melt metal, after the set temperature is reached, combustion-supporting gas can be selected not to be blown in, or the blowing amount of the gas is reduced, in particular, the gas path is closed by controlling the second electromagnetic valve 80, or the second electromagnetic valve 80 is kept in an open state, the large flow of oxygen entering the second gas path is realized by controlling the second control valve 8, oxidation of oxygen entering the inside the second gas path is prevented from being blown in, and the combustion-supporting gas is effectively required to form the transient pressure in the process. The transient pressure may be achieved by the first pressurizing pump 91 and the second pressurizing pump 81, which have been described above.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The nondestructive testing control welding method based on the digital model is characterized by comprising the following steps of:
the method comprises the steps of obtaining a three-dimensional contour model of a region to be welded and corresponding space coordinate data, dividing the three-dimensional contour model of the region to be welded into a plurality of uniform welding blocks, dividing the welding blocks into a plurality of welding sheet layers with the same height, and forming a welding grid by each welding sheet layer;
inputting a plurality of welding grids of each welding block and corresponding space coordinate data to a control module;
setting a digital model, setting transient pressures of two protective gases in the welding process and setting welding power in the welding process through the digital model; forming a protection for a welding position in a welding process of each welding grid by controlling an interval mode of two shielding gases in the welding process, comprising:
acquiring welding grids, configuring a moving track and a moving speed of a welding gun in one welding stroke by a digital model based on space coordinate data corresponding to the welding grids, and setting a control instruction of intermittent blowing of two shielding gases and a transient pressure of each shielding gas in each welding stroke based on the moving track and the moving speed;
the control instruction is set according to the following rules:
a welding gun movement rule, configured to set a plurality of calibration points in the welding grid, configure a start point, a pass point and an end point in each welding stroke with the plurality of calibration points, form a movement track with the start point, the pass point and the end point in each welding stroke, and write position data corresponding to the start point, the pass point and the end point in each welding stroke into a setting program, and configure a welding gun movement control instruction and a movement speed control instruction in each welding stroke through the setting program;
the interval mode setting rule is used for decomposing the moving track according to a starting point, a passing point and a terminal point based on the moving track and the moving speed of the welding gun in each welding stroke, and then respectively setting the switching among different shielding gases in the process of welding the starting point, the passing point and the terminal point, so as to configure control instructions when the two shielding gases are switched; and simultaneously setting control instructions of transient pressure of different protective gases when blowing.
2. The digital model-based non-destructive inspection control welding method according to claim 1, wherein the three-dimensional contour model of the region to be welded is obtained by the following method:
placing a weldment on a base station and forming positioning, acquiring three-dimensional scanning data of the weldment by using a three-dimensional scanner, constructing a three-dimensional contour of the weldment by using the three-dimensional scanning data, and calibrating a region to be welded and three-dimensional coordinate data of the region to be welded in the three-dimensional contour of the weldment;
and carrying out reverse modeling on the to-be-welded area by taking the three-dimensional profile of the weldment as a reference, constructing a to-be-welded area three-dimensional profile model, and forming space coordinate data of the to-be-welded area three-dimensional profile model by taking the three-dimensional coordinate data of the to-be-welded area as a reference.
3. The digital model-based non-destructive inspection controlled welding method according to claim 1, wherein the welding grid is formed as follows:
dividing the three-dimensional contour model of the area to be welded into a plurality of uniform welding blocks by taking the upper plane of the three-dimensional contour model of the area to be welded as a reference, recording the serial number of each welding block, dividing the welding block into a plurality of welding sheet layers with the same height based on the space coordinate data, setting a plurality of positioning points on each welding sheet layer, taking the space coordinate data as a reference, and dividing the welding sheet layers into a welding grid by taking a plurality of positioning points as starting points, passing points and ending points.
4. The digital model based non-destructive inspection controlled welding method of claim 1, further comprising: and acquiring welding grid three-dimensional scanning data of each welded grid after welding by using a three-dimensional scanner, constructing a welding grid three-dimensional contour based on the welding grid three-dimensional scanning data, calling the corresponding welding grid, and comparing the space coordinate data matched with the welding grid three-dimensional contour, and correspondingly correcting welding of the welding grid through the comparison result.
5. The digital model-based non-destructive inspection controlled welding method according to claim 1, wherein the calibration points are set as follows:
dividing a three-dimensional contour model of a region to be welded into a plurality of uniform welding blocks, wherein each welding block is a cube, and dividing each welding block into a plurality of welding grids with the same height according to the welding height; wherein the upper surface of each welding grid is square;
and determining coordinate data information of each welding grid by using the space coordinate data, taking the size of a welding spot formed by one spot welding as a measurement unit of the welding spot during welding, and setting a plurality of calibration points on the welding grid by using the size of the welding spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311002041.XA CN116713560B (en) | 2023-08-10 | 2023-08-10 | Nondestructive testing control welding method based on digital model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311002041.XA CN116713560B (en) | 2023-08-10 | 2023-08-10 | Nondestructive testing control welding method based on digital model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116713560A CN116713560A (en) | 2023-09-08 |
| CN116713560B true CN116713560B (en) | 2023-10-20 |
Family
ID=87873853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311002041.XA Active CN116713560B (en) | 2023-08-10 | 2023-08-10 | Nondestructive testing control welding method based on digital model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116713560B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU66255U1 (en) * | 2007-04-18 | 2007-09-10 | Общество с ограниченной ответственностью "Технологический центр "ТЕНА" | INSTALLATION FOR WELDING IN A PROTECTIVE GAS MEDIA |
| CN104014911A (en) * | 2014-06-05 | 2014-09-03 | 成都融合电气有限公司 | Dynamic control device and method for gas shielded welding |
| CN108031981A (en) * | 2017-12-18 | 2018-05-15 | 中国科学院西安光学精密机械研究所 | A kind of laser etching method and device for curved-surface structure shaping |
| CN109190260A (en) * | 2018-09-07 | 2019-01-11 | 华中科技大学 | A kind of laser-arc hybrid welding in industry Three dimensional transient simulation method |
| CN110328439A (en) * | 2019-07-25 | 2019-10-15 | 阳江市普瑞德增材制造研究院有限公司 | A kind of narrow clearance welding gun and preparation method thereof |
| CN111230869A (en) * | 2020-01-21 | 2020-06-05 | 北京卫星制造厂有限公司 | Complex space curve weld joint movement track and welding process collaborative planning method |
| CN112507639A (en) * | 2021-01-08 | 2021-03-16 | 福州大学 | Method for visualizing GMAW welding molten drop transition dynamic process |
-
2023
- 2023-08-10 CN CN202311002041.XA patent/CN116713560B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU66255U1 (en) * | 2007-04-18 | 2007-09-10 | Общество с ограниченной ответственностью "Технологический центр "ТЕНА" | INSTALLATION FOR WELDING IN A PROTECTIVE GAS MEDIA |
| CN104014911A (en) * | 2014-06-05 | 2014-09-03 | 成都融合电气有限公司 | Dynamic control device and method for gas shielded welding |
| CN108031981A (en) * | 2017-12-18 | 2018-05-15 | 中国科学院西安光学精密机械研究所 | A kind of laser etching method and device for curved-surface structure shaping |
| CN109190260A (en) * | 2018-09-07 | 2019-01-11 | 华中科技大学 | A kind of laser-arc hybrid welding in industry Three dimensional transient simulation method |
| CN110328439A (en) * | 2019-07-25 | 2019-10-15 | 阳江市普瑞德增材制造研究院有限公司 | A kind of narrow clearance welding gun and preparation method thereof |
| CN111230869A (en) * | 2020-01-21 | 2020-06-05 | 北京卫星制造厂有限公司 | Complex space curve weld joint movement track and welding process collaborative planning method |
| CN112507639A (en) * | 2021-01-08 | 2021-03-16 | 福州大学 | Method for visualizing GMAW welding molten drop transition dynamic process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116713560A (en) | 2023-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2555262A (en) | Robot-based welding system and method | |
| CN101566546B (en) | Online weld inspection and repair method for resistance welding and weld-bonding | |
| CN105618976B (en) | A kind of intelligent weld seam system | |
| CN101546196A (en) | Action surplus of robot calculation display method and device | |
| CN106826834A (en) | A kind of robot welding automatic localization method | |
| CN205342175U (en) | Robot welding system | |
| CN105643104A (en) | Laser welding method for precisely controlling weld penetration | |
| CN114289934A (en) | Three-dimensional vision-based automatic welding system and method for large structural part | |
| JP2013535336A (en) | Method for induction heating brazing of parts having complex shapes and single or multiple brazing stations for carrying out the same | |
| CN106735828A (en) | A kind of horizontal rifle electro-beam welding method of large-scale spherical shell side seam | |
| CN116713560B (en) | Nondestructive testing control welding method based on digital model | |
| CN212371483U (en) | Connecting structure for reactor vessel | |
| CN111331223B (en) | Robot automatic welding method for field-shaped lattice type carriage plate | |
| JP2007272309A (en) | Off-line teaching device for working robot | |
| CN106001971A (en) | Automatic 2G-welding-position narrow-gap welding method for steam turbine valve thick-wall connection tube | |
| CN117047237B (en) | Intelligent flexible welding system and method for special-shaped parts | |
| CN113020813A (en) | Design cutting and welding integrated production system and production method thereof | |
| JPH0394976A (en) | Method and apparatus for sweep welding | |
| CN108971883B (en) | Suitable for cheating the field repairing method of cavity space | |
| CN105397290B (en) | The Laser seal welding machine and control method welded for bulk workpiece | |
| CN107705312A (en) | A kind of method based on line scan data extraction postwelding weld edge point | |
| CN211867015U (en) | Pipeline welding detection device | |
| CN113714606B (en) | TIG fusion repair process method for defects of laser welding joint | |
| CN212217496U (en) | Thick-section narrow-gap T-shaped welding joint structure | |
| CN110618442B (en) | Beam space form measuring method for high-energy beam welder |
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 |