CN115139000B - Jumping return type welding method - Google Patents
Jumping return type welding method Download PDFInfo
- Publication number
- CN115139000B CN115139000B CN202210591966.1A CN202210591966A CN115139000B CN 115139000 B CN115139000 B CN 115139000B CN 202210591966 A CN202210591966 A CN 202210591966A CN 115139000 B CN115139000 B CN 115139000B
- Authority
- CN
- China
- Prior art keywords
- welding
- sequence
- local
- section
- partial
- 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 618
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000009191 jumping Effects 0.000 title abstract description 4
- 239000011324 bead Substances 0.000 claims abstract description 125
- 230000000007 visual effect Effects 0.000 abstract description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 33
- 239000010962 carbon steel Substances 0.000 description 33
- 230000007547 defect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a jumping return Chinese type welding method, which comprises the following specific steps: s1, dividing a welding bead; s2, determining a first section local welding section; s3, determining a second section local welding section; s4, determining a region to be selected of a welding sequence; s5, dividing welding segments step by step according to different areas to be selected of the welding sequence; s6, determining a welding sequence; s7, welding. According to the invention, by utilizing the characteristic of welding deformation of the tube bank, the welding deformation generated by the previous welding section can be reduced by the welding of the subsequent welding section, and finally, the deformation of the whole tube bank can be controlled within a reasonable deformation range after the welding is finished, so that the structural damage to the tube bank is avoided, the welding deformation of a large-sized tube bank workpiece is reduced, and the structural safety of a welding workpiece is improved; the operation is visual and simple, and the implementation is easy.
Description
Technical Field
The invention relates to the technical field of welding operation, in particular to a jump-back Chinese type welding method.
Background
When fusion welding is used, the welded base metal and the filler metal are heated and melted by a heat source, and the bonding between atoms is completed by means of the miscibility between liquid phases and the tight contact between liquid and solid atoms. When the metal is heated to the melting temperature during welding, a large number of concentrated heat sources bring about localized thermal stresses. In the welding cooling process, the rapid cooling of the weld joint further generates great stress under the restraint of surrounding parent metal. These thermal stresses can cause deformation of the parts being welded and, in severe cases, cracking, causing damage to the parts.
A large amount of welding work is needed in the installation of large-scale tube bank work pieces, and the welding line is long and the welding coverage area is large. If welding deformation control is not performed, the tube bank can not work due to serious deformation, and huge loss is brought to subsequent production. There are many techniques for controlling the deformation of a welder, including materials, welding parameters, welding constraints, auxiliary heat, welding sequences, post-weld correction, and other control methods. Control of the welding sequence is an effective and convenient method, but must be rationally arranged according to the particular workpiece shape and size, in combination with the welding method and parameters used.
Disclosure of Invention
The invention aims to control welding of a pipe row workpiece and provides a jump-back type welding method.
The invention adopts the following technical scheme to realize the aim:
a jump-back Chinese welding method comprises the following specific steps:
s1, weld bead division
Determining the starting point and the end point of the whole welding bead, and uniformly dividing the whole welding bead, wherein each divided section is called an initial local welding section;
s2, determining a first section local welding section
Determining a local welding section including the starting point position of the whole welding bead as a first local welding section in a welding sequence;
s3, determining a second section local welding section
Determining a local welding section including the end position of the whole welding bead as a second local welding section in the welding sequence;
s4, determining a welding sequence to-be-selected area
Defining all partial welding sections with undetermined welding sequence in the whole welding bead as a region to be selected of the welding sequence;
defining one local welding section with determined welding sequence as an independent local welding section with undetermined sequence on two adjacent local welding sections; defining a set of two or more local weld segments adjacent to each other as a set of local weld segments in a pending order;
s5, dividing welding segments step by step according to different welding sequence to-be-selected areas
When the welding sequence to-be-selected area only comprises a section of single local welding section with a undetermined sequence, determining the local welding section as the next local welding section in the welding sequence, and moving the local welding section with the determined welding sequence out of the welding sequence to-be-selected area to enter the next step;
when the welding sequence to-be-selected area comprises more than two sections of independent to-be-determined sequence local welding sections, selecting the earliest welding sequence with adjacent determined local welding sections as the next section of the local welding sections in the welding sequence, and removing the local welding sections with determined welding sequences from the welding sequence to-be-selected area to enter the next step;
when the to-be-selected welding sequence area comprises a to-be-determined sequence partial welding segment group and only one to-be-determined sequence partial welding segment group, selecting the next partial welding segment in the welding sequence from the middle position of the to-be-determined sequence partial welding segment group, if two partial welding segments exist at the middle position, selecting one partial welding segment which is close to the two sides of the to-be-determined sequence partial welding segment group and has determined the earlier welding sequence, and moving the partial welding segment with determined the welding sequence out of the to-be-selected welding sequence area to enter the next step;
when the welding sequence to-be-selected area comprises more than two to-be-determined sequence local welding segment groups, when the lengths of the to-be-determined sequence local welding segment groups are unequal, selecting to perform welding sequence determination from the to-be-determined sequence local welding segment groups with the longest lengths; when more than two local welding segment groups with the undetermined sequence and the same length or the longest length are included in the local welding segment groups with the undetermined sequence, determining the welding sequence from the local welding segment groups with undetermined sequence, which are adjacent to the local welding segment with the earliest determined welding sequence; and then selecting the middle position of the partial welding section group with the undetermined sequence as the next partial welding section in the welding sequence, and when two partial welding sections are arranged at the middle position, selecting one partial welding section which is close to two sides of the partial welding section group with the undetermined sequence and has determined the earlier welding sequence, and removing the partial welding section with the determined welding sequence from the welding sequence to-be-selected area to enter the next step;
s6, determining the welding sequence
Repeating the operations in the steps S4 and S5 until the welding sequence of all the partial welding segments in the whole welding bead is determined;
s7, welding
And (3) welding all the partial welding segments according to the welding sequence determined in the steps S2 to S6, and when the partial welding segments used for welding are selected to be connected with the partial welding segments which are already welded, overlapping welding is carried out on the partial welding segments which are already welded.
In step S1, when the weld track is uniformly divided, the length of the initial partial weld segment is not less than 0.8m and not more than 2m.
In the step S7, except for the partial welding sections of which the two ends are required to be subjected to lap welding, the actual length difference of the other partial welding sections after welding is not more than 10cm.
In step S7, the length of the partial welding segment, which is required to be lap welded at both ends, is not more than 3m.
In step S7, the welding overlap length is not less than 1cm and not more than 3cm.
The welding workpiece is a large-area pipe row workpiece.
The welding mode is automatic consumable electrode or non-consumable electrode welding.
The beneficial effects of the invention are as follows: according to the invention, by utilizing the characteristic of welding deformation of the tube bank, the welding deformation generated by the previous welding section can be reduced by the welding of the subsequent welding section, and finally, the deformation of the whole tube bank can be controlled within a reasonable deformation range after the welding is finished, so that the structural damage to the tube bank is avoided, the welding deformation of a large-sized tube bank workpiece is reduced, and the structural safety of a welding workpiece is improved; the operation is visual and simple, and the implementation is easy.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of portion B of FIG. 1;
FIG. 4 is a schematic view of portion C of FIG. 1;
FIG. 5 is a schematic view of a tube bank work piece;
FIG. 6 is a schematic view of a partial weld segment division in embodiment 1;
FIG. 7 is a schematic view of a partial weld segment division in embodiment 2;
FIG. 8 is a schematic view of a partial weld segment division in embodiment 3;
in the figure: 10-carbon steel pipe I; 20-a second carbon steel pipe; 30-carbon steel fins; 40-first welding pass; 41-welding bead one partial welding section one; 42-welding a first partial welding section II; 43-welding bead one partial welding section III; 50-welding bead II; 51-a second partial welding section I of the welding bead; 52-a second partial welding section of the welding bead; 53-a second partial welding section III of the welding bead; 54-a second partial welding section IV of the welding bead; 55-a second partial welding section of the welding bead; 60-third welding bead; 61-welding bead three partial welding section one; 62-welding bead three partial welding section II; 63-welding bead three partial welding section three;
the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. The invention is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the invention will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
a jump-back Chinese welding method comprises the following specific steps:
s1, weld bead division
Determining the starting point and the end point of the whole welding bead, and uniformly dividing the whole welding bead, wherein each divided section is called an initial local welding section; when the welding bead is uniformly divided, the length of the initial partial welding section is not less than 0.8m and not more than 2m;
s2, determining a first section local welding section
Determining a local welding section including the starting point position of the whole welding bead as a first local welding section in a welding sequence;
s3, determining a second section local welding section
Determining a local welding section including the end position of the whole welding bead as a second local welding section in the welding sequence;
s4, determining a welding sequence to-be-selected area
Defining all partial welding sections with undetermined welding sequence in the whole welding bead as a region to be selected of the welding sequence;
defining one local welding section with determined welding sequence as an independent local welding section with undetermined sequence on two adjacent local welding sections; defining a set of two or more local weld segments adjacent to each other as a set of local weld segments in a pending order;
s5, dividing welding segments step by step according to different welding sequence to-be-selected areas
When the welding sequence to-be-selected area only comprises a section of single local welding section with a undetermined sequence, determining the local welding section as the next local welding section in the welding sequence, and moving the local welding section with the determined welding sequence out of the welding sequence to-be-selected area to enter the next step;
when the welding sequence to-be-selected area comprises more than two sections of independent to-be-determined sequence local welding sections, selecting the earliest welding sequence with adjacent determined local welding sections as the next section of the local welding sections in the welding sequence, and removing the local welding sections with determined welding sequences from the welding sequence to-be-selected area to enter the next step;
when the to-be-selected welding sequence area comprises a to-be-determined sequence partial welding segment group and only one to-be-determined sequence partial welding segment group, selecting the next partial welding segment in the welding sequence from the middle position of the to-be-determined sequence partial welding segment group, if two partial welding segments exist at the middle position, selecting one partial welding segment which is close to the two sides of the to-be-determined sequence partial welding segment group and has determined the earlier welding sequence, and moving the partial welding segment with determined the welding sequence out of the to-be-selected welding sequence area to enter the next step;
when the welding sequence to-be-selected area comprises more than two to-be-determined sequence local welding segment groups, when the lengths of the to-be-determined sequence local welding segment groups are unequal, selecting to perform welding sequence determination from the to-be-determined sequence local welding segment groups with the longest lengths; when more than two local welding segment groups with the undetermined sequence and the same length or the longest length are included in the local welding segment groups with the undetermined sequence, determining the welding sequence from the local welding segment groups with undetermined sequence, which are adjacent to the local welding segment with the earliest determined welding sequence; and then selecting the middle position of the partial welding section group with the undetermined sequence as the next partial welding section in the welding sequence, and when two partial welding sections are arranged at the middle position, selecting one partial welding section which is close to two sides of the partial welding section group with the undetermined sequence and has determined the earlier welding sequence, and removing the partial welding section with the determined welding sequence from the welding sequence to-be-selected area to enter the next step;
s6, determining the welding sequence
Repeating the operations in the steps S4 and S5 until the welding sequence of all the partial welding segments in the whole welding bead is determined;
s7, welding
Welding all the partial welding segments according to the welding sequence determined in the steps S2 to S6, and when the partial welding segments used for welding are selected to be connected with the partial welding segments which are already welded, carrying out lap welding on the partial welding segments and the partial welding segments which are already welded;
except for the partial welding sections of which the two ends are required to be subjected to lap welding, the actual length difference of the other partial welding sections after welding is not more than 10cm; the length of a local welding section of which the two ends are required to be subjected to lap welding is not more than 3m; the welding overlap length is not less than 1cm and not more than 3cm.
The welding workpiece is a large-area pipe row workpiece; the welding mode is automatic consumable electrode or non-consumable electrode welding.
Specific example 1:
referring to fig. 1, 2, 3, 4, 5 and 6, using a jump-back welding method, using automated consumable electrode welding, the tube bank work piece is composed of 20g of carbon steel tube one 10, 20g of carbon steel tube two 20, 20 gauge carbon steel fins 30; taking a welding of a carbon steel tube two 20 and a carbon steel fin 30 with a length of three meters as an example, an ER70-S6 carbon steel gas shielded welding wire with a diameter of 1.2 mm is used.
The specific operation is as follows:
firstly, determining a starting point position and an ending point position of a first welding bead 40, and uniformly dividing the first welding bead 40 into a first welding bead local welding section 41, a second welding bead local welding section 42 and a third welding bead local welding section 43 according to the length of 1m;
determining a first welding sequence of a first welding bead local welding segment 41 including a starting point position of a first whole welding bead 40;
determining a first welding order of a first welding bead local welding segment III 43 comprising the end position of the first welding bead 40;
a first partial welding segment second 42 of the whole welding bead, the welding sequence of which is not determined, is defined as a region to be selected for the welding sequence, and: defining a first welding bead local welding section II 42 with a determined welding sequence on two adjacent local welding sections on two sides as an independent local welding section with a undetermined sequence; determining a first partial welding section 42 of the welding bead as a next welding sequence;
moving the welding gun, and completing welding of a first welding bead part welding section I41 of a first welding sequence of a first welding bead 40 by taking the starting point position of a joint of a second carbon steel pipe 20 and a carbon steel fin 30 as a starting point, wherein the actual length of the first welding bead part welding section I41 after the welding is completed is 1m;
moving the welding gun, and finishing welding of a first welding bead part welding section III 43 of a second welding sequence of the first welding bead 40 by taking the end position of a joint of the second carbon steel tube 20 and the carbon steel fin 30 as an end point, wherein the actual length of the first welding bead part welding section III 43 after the welding is finished is 1m;
moving the welding gun to finish welding a first partial welding section 42 of a first welding sequence of the first welding bead 40, wherein the actual length of the first partial welding section 42 of the first welding bead after the welding is finished is 1.04m;
two ends of the first welding bead local welding section II 42 are respectively overlapped and welded with the first welding bead local welding section 41 and the third welding bead local welding section III 43, and the overlapped lengths are respectively 2cm;
after the welding is finished, the actual welding deformation is 1cm, and the tube bank has no cracks and other defects caused by the welding deformation and has qualified quality.
Specific example 2:
referring to fig. 1, 2, 3, 4, 5 and 7, using a jump-back welding method, using automated consumable electrode welding, the tube bank work piece is composed of 20g of carbon steel tube one 10, 20g of carbon steel tube two 20, 20 gauge carbon steel fins 30; taking a carbon steel tube two 20 and a carbon steel fin 30 welded with a length of five meters as an example, ER70-S6 carbon steel gas shielded welding wires with a diameter of 1.2 mm are used.
The specific operation is as follows:
firstly, determining a starting point position and an ending point position of a second welding bead 50, and uniformly dividing the second welding bead 50 into a first welding bead local welding section 51, a second welding bead local welding section 52, a second welding bead local welding section third 53, a second welding bead local welding section fourth 54 and a second welding bead local welding section fifth 55 according to the length of 1m;
determining a second partial weld segment 51 of the weld bead including a starting point position of the second full weld bead 50 as a first welding sequence;
determining a second welding bead local welding segment five 55 including the end position of the whole second welding bead 50 as a second welding sequence;
defining a second welding bead local welding section 52, a second welding bead local welding section 53 and a fourth welding bead local welding section 54 which are not determined in the welding sequence in the whole second welding bead 50 as a welding sequence to-be-selected area, wherein: defining a set consisting of more than two welding bead two local welding sections 52, welding bead two local welding sections 53 and welding bead two local welding sections 54 which are adjacent to each other as a local welding section group in a undetermined sequence; determining a second welding bead local welding section III 53 at the middle position of the local welding section group with the undetermined sequence as a third welding sequence;
the welding sequence to-be-selected area is selected as a second welding bead local welding section 52 and a fourth welding bead local welding section 54, and the second welding bead local welding section 52 and the fourth welding bead local welding section 54 are defined as independent to-be-determined sequence local welding sections; determining a second partial welding segment 52 of the welding bead in the independent undetermined sequence as a fourth welding sequence;
the welding sequence to be selected is selected as follows: a second weld bead partial weld segment four 54, defining the second weld bead partial weld segment four 54 as an individual pending sequence partial weld segment; determining a second partial welding section IV 54 of the welding bead as a fifth welding sequence;
moving the welding gun, and completing welding of a second welding bead local welding section 51 of a second welding bead 50 by taking the starting point position of a joint of the second carbon steel tube 20 and the carbon steel fin 30 as a starting point, wherein the actual length of the welded second welding bead local welding section 51 is 1m;
moving the welding gun, and finishing welding of a second partial welding section five 55 of a second welding bead 50 by taking the end position of a joint of the second carbon steel tube 20 and the carbon steel fin 30 as an end point, wherein the actual length of the second partial welding section five 55 of the welding bead after the welding is finished is 1m;
moving the welding gun to finish welding of a second welding bead local welding section III 53 of the second welding bead 50, wherein the actual length of the welded second welding bead local welding section III 53 is 1m;
moving the welding gun to finish welding of a second welding bead local welding section 52 of a second welding bead 50, wherein the actual length of the second welding bead local welding section 52 is 1.04m after welding is finished, and two ends of the second welding bead local welding section 52 are respectively overlapped with a first welding bead local welding section 51 and a third welding bead local welding section 53, and the overlapped lengths are respectively 2cm;
moving the welding gun to finish welding a second welding bead local welding section IV 54 of a second welding bead 50, wherein the actual length of the second welding bead local welding section IV 54 is 1.04m after welding is finished, and two ends of the second welding bead local welding section IV 54 are respectively overlapped with a third welding bead local welding section 53 and a fifth welding bead local welding section 55, and the overlapped lengths are respectively 2cm;
after the welding is finished, the measured welding deformation is 1.5cm, and the tube bank has no cracks and other defects caused by the welding deformation and has qualified quality.
Specific example 3:
referring to fig. 1, 2, 3, 4, 5 and 8, using a jump-back welding method, using automated consumable electrode welding, the tube bank work piece is composed of 20g of carbon steel tube one 10, 20g of carbon steel tube two 20, 20 gauge carbon steel fins 30; taking a welding of a carbon steel tube two 20 and a carbon steel fin 30 with a length of three meters as an example, an ER70-S6 carbon steel gas shielded welding wire with a diameter of 1.2 mm is used.
The welding sequence is similar to that of embodiment 1, except that this embodiment is to perform cladding build-up welding, rather than the joint welding performed on the joint in embodiment 1.
The specific operation is as follows:
firstly, determining a starting point position and an ending point position of a third welding bead 60, and uniformly dividing the third welding bead 60 into a first welding bead three partial welding section 61, a second welding bead three partial welding section 62 and a third welding bead three partial welding section 63 according to the length of 1m;
determining a first welding sequence of a third partial welding segment 61 of the welding bead including a starting point position of a third whole welding bead 60;
determining a third welding bead local welding segment 63 including the end position of the third welding bead 60 as a second welding sequence;
a third partial weld segment 62 of the entire third weld bead 60, for which the welding order is not determined, is defined as a welding order to-be-selected region, wherein: defining a welding bead three-local welding section two 62 with determined welding sequence on two adjacent local welding sections on two sides as an independent local welding section with undetermined sequence; determining a third welding sequence of a third partial welding section II 62 of the welding bead;
moving a welding gun, completing the surfacing of a third partial welding section 61 of a third welding bead 60 by taking the surfacing starting point positions of a second carbon steel tube 20 and a carbon steel fin 30 as starting points, wherein the actual length of the third partial welding section 61 of the welding bead after the welding is completed is 1m;
moving the welding gun, completing the surfacing of a third local welding section 63 of a third welding bead 60 by taking the surfacing terminal positions of a second carbon steel tube 20 and a second carbon steel fin 30 as terminal points, wherein the actual length of the third local welding section 63 of the welding bead after the welding is completed is 1m;
moving the welding gun to finish the surfacing of a third partial welding section II 62 of a third welding path 60, wherein the actual length of the third partial welding section II 62 of the welding path after the welding is finished is 1.04m;
two ends of the third welding bead local welding section II 62 are respectively overlapped and welded with the first welding bead local welding section 61 and the third welding bead local welding section 63, and the overlapped lengths are respectively 2cm;
after the welding is finished, the measured welding deformation is 0.9cm, and the tube bank has no cracks and other defects caused by the welding deformation and has qualified quality.
According to the characteristics of welding deformation of the tube bank, the welding of the subsequent welding line or the surfacing welding can resist the previous welding deformation, and finally the welding or the surfacing welding of the whole welding bead is finished in a jumping back mode; in the process, the welding deformation can be controlled within a reasonable deformation range, structural damage to the pipe row is avoided, the welding deformation of the large-sized pipe row workpiece is reduced, and the structural safety of the welding workpiece is improved.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is intended to cover various modifications, either made by the method concepts and technical solutions of the invention, or applied directly to other applications without modification, within the scope of the invention.
Claims (7)
1. The jump-back Chinese welding method is characterized by comprising the following specific steps of:
s1, weld bead division
Determining the starting point and the end point of the whole welding bead, and uniformly dividing the whole welding bead, wherein each divided section is called an initial local welding section;
s2, determining a first section local welding section
Determining a local welding section including the starting point position of the whole welding bead as a first local welding section in a welding sequence;
s3, determining a second section local welding section
Determining a local welding section including the end position of the whole welding bead as a second local welding section in the welding sequence;
s4, determining a welding sequence to-be-selected area
Defining all partial welding sections with undetermined welding sequence in the whole welding bead as a region to be selected of the welding sequence;
defining one local welding section with determined welding sequence as an independent local welding section with undetermined sequence on two adjacent local welding sections; defining a set of two or more local weld segments adjacent to each other as a set of local weld segments in a pending order;
s5, dividing welding segments step by step according to different welding sequence to-be-selected areas
When the welding sequence to-be-selected area only comprises a section of single local welding section with a undetermined sequence, determining the local welding section as the next local welding section in the welding sequence, and moving the local welding section with the determined welding sequence out of the welding sequence to-be-selected area to enter the next step;
when the welding sequence to-be-selected area comprises more than two sections of independent to-be-determined sequence local welding sections, selecting the earliest welding sequence with adjacent determined local welding sections as the next section of the local welding sections in the welding sequence, and removing the local welding sections with determined welding sequences from the welding sequence to-be-selected area to enter the next step;
when the to-be-selected welding sequence area comprises a to-be-determined sequence partial welding segment group and only one to-be-determined sequence partial welding segment group, selecting the next partial welding segment in the welding sequence from the middle position of the to-be-determined sequence partial welding segment group, if two partial welding segments exist at the middle position, selecting one partial welding segment which is close to the two sides of the to-be-determined sequence partial welding segment group and has determined the earlier welding sequence, and moving the partial welding segment with determined the welding sequence out of the to-be-selected welding sequence area to enter the next step;
when the welding sequence to-be-selected area comprises more than two to-be-determined sequence local welding segment groups, when the lengths of the to-be-determined sequence local welding segment groups are unequal, selecting to perform welding sequence determination from the to-be-determined sequence local welding segment groups with the longest lengths; when more than two local welding segment groups with the undetermined sequence and the same length or the longest length are included in the local welding segment groups with the undetermined sequence, determining the welding sequence from the local welding segment groups with undetermined sequence, which are adjacent to the local welding segment with the earliest determined welding sequence; and then selecting the middle position of the partial welding section group with the undetermined sequence as the next partial welding section in the welding sequence, and when two partial welding sections are arranged at the middle position, selecting one partial welding section which is close to two sides of the partial welding section group with the undetermined sequence and has determined the earlier welding sequence, and removing the partial welding section with the determined welding sequence from the welding sequence to-be-selected area to enter the next step;
s6, determining the welding sequence
Repeating the operations in the steps S4 and S5 until the welding sequence of all the partial welding segments in the whole welding bead is determined;
s7, welding
And (3) welding all the partial welding segments according to the welding sequence determined in the steps S2 to S6, and when the partial welding segments used for welding are selected to be connected with the partial welding segments which are already welded, overlapping welding is carried out on the partial welding segments which are already welded.
2. The jump-back welding method according to claim 1, wherein in step S1, the initial partial weld segment length is not less than 0.8m and not more than 2m when the weld track is uniformly divided.
3. The jump-back welding method according to claim 2, wherein in step S7, the difference in actual length after welding of the other partial welding sections is not more than 10cm except for the partial welding sections where overlap welding is required at both ends.
4. A jump-back welding method as defined in claim 3, wherein in step S7, the length of the partial weld segment, which requires overlap welding at both ends, is not more than 3m.
5. The skip-back welding method according to claim 4, wherein in step S7, the welding overlap length is not less than 1cm and not more than 3cm.
6. The skip-back welding method of claim 5 wherein the work piece is a large area tube bank work piece.
7. The skip-back welding method of claim 6 wherein the welding is automated consumable electrode or non-consumable electrode welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591966.1A CN115139000B (en) | 2022-05-27 | 2022-05-27 | Jumping return type welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591966.1A CN115139000B (en) | 2022-05-27 | 2022-05-27 | Jumping return type welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115139000A CN115139000A (en) | 2022-10-04 |
| CN115139000B true CN115139000B (en) | 2024-02-20 |
Family
ID=83406539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210591966.1A Active CN115139000B (en) | 2022-05-27 | 2022-05-27 | Jumping return type welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115139000B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778785A (en) * | 1954-02-18 | 1957-07-10 | Union Carbide & Carbon Corp | Method of applying hard-facing metals |
| JPH091376A (en) * | 1995-06-14 | 1997-01-07 | Hitachi Ltd | Welding method with low residual stress structure |
| JP2003225765A (en) * | 2002-01-31 | 2003-08-12 | Kobe Steel Ltd | Position detecting method in automatic welding machine |
| KR100810131B1 (en) * | 2007-11-13 | 2008-03-06 | 주식회사 세화기계 | Welding method of boiler tubes assembly |
| KR20080038715A (en) * | 2006-10-31 | 2008-05-07 | 삼성중공업 주식회사 | Welding distortion analysis method of large shell structure using the residual strain as boundary condition |
| DE102010039893A1 (en) * | 2010-08-27 | 2012-03-01 | Robert Bosch Gmbh | Joining body, comprises first and second joining partners, which are partially connected to each other along connecting zone with weld seam |
| CN102922085A (en) * | 2012-11-21 | 2013-02-13 | 中国能源建设集团天津电力建设公司 | Manual arc welding bottoming layer Z-shaped arc extinction method and application thereof in Q460 high-strength steel horizontally-fixed steel pipe butt welding |
| RU2012131708A (en) * | 2012-07-24 | 2014-01-27 | Открытое Акционерное Общество "Научно-Исследовательский Институт Стали" (Оао "Нии Стали") | METHOD FOR WELDING AND / OR SURFACE OF DIFFERENTLY WELDED METALS AND ALLOYS WITH RETURN CASCADE ELECTRODE AND / OR WELDING MOVEMENT |
| CN103659015A (en) * | 2012-09-26 | 2014-03-26 | 上海宝冶集团有限公司 | Four-section segmented skip welding method |
| KR20150017128A (en) * | 2013-08-06 | 2015-02-16 | 주선숙 | Shot Cross Welding |
| CN105057905A (en) * | 2015-08-13 | 2015-11-18 | 德阳东汽电站机械制造有限公司 | Welding method of large-pipe-diameter exhaust channel of gas turbine |
| CN106271149A (en) * | 2016-08-08 | 2017-01-04 | 东方电气集团东方汽轮机有限公司 | A kind of hollow stationary blade of steam turbine welding method |
| CN107775202A (en) * | 2016-08-27 | 2018-03-09 | 上海宝冶集团有限公司 | The anti-deforming welding method of large-scale metal storage tank |
| CN109108507A (en) * | 2017-06-23 | 2019-01-01 | 伊犁优创锅炉制造有限公司 | A kind of welding method that large-scale storage tank bottom plate renews |
| CN109317787A (en) * | 2018-11-14 | 2019-02-12 | 中国能源建设集团安徽电力建设第工程有限公司 | A kind of steel conduit all positon narrow gap TIG automatic welding process |
| CN110625335A (en) * | 2019-09-02 | 2019-12-31 | 北京星航机电装备有限公司 | Welding deformation control method for high-aspect-ratio framework skin wing type component |
| JP2020017029A (en) * | 2018-07-24 | 2020-01-30 | 株式会社ダイヘン | Optional function usage fee calculation method, optional function usage fee calculation device, and computer program |
| CN111545874A (en) * | 2020-03-30 | 2020-08-18 | 广州文冲船舶修造有限公司 | Deformation control method in aluminum alloy hull section manufacturing |
| CN112171095A (en) * | 2020-09-24 | 2021-01-05 | 中车长春轨道客车股份有限公司 | Shape and position deformation control welding method for underframe floor of motor train unit |
| AU2020103879A4 (en) * | 2020-12-03 | 2021-02-11 | Zhimin Li | method for predicting welding deformation of key control points of EMU train body |
| KR20210034870A (en) * | 2019-09-23 | 2021-03-31 | 한국전력공사 | Welding method for high chromium steel |
| CN113145979A (en) * | 2021-04-29 | 2021-07-23 | 广船国际有限公司 | Welding method of ship window frame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008057075A1 (en) * | 2006-11-06 | 2008-05-15 | Aquilex Corporation | Method and system for weld bead sequencing to reduce distortion and stress |
-
2022
- 2022-05-27 CN CN202210591966.1A patent/CN115139000B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778785A (en) * | 1954-02-18 | 1957-07-10 | Union Carbide & Carbon Corp | Method of applying hard-facing metals |
| JPH091376A (en) * | 1995-06-14 | 1997-01-07 | Hitachi Ltd | Welding method with low residual stress structure |
| JP2003225765A (en) * | 2002-01-31 | 2003-08-12 | Kobe Steel Ltd | Position detecting method in automatic welding machine |
| KR20080038715A (en) * | 2006-10-31 | 2008-05-07 | 삼성중공업 주식회사 | Welding distortion analysis method of large shell structure using the residual strain as boundary condition |
| KR100810131B1 (en) * | 2007-11-13 | 2008-03-06 | 주식회사 세화기계 | Welding method of boiler tubes assembly |
| DE102010039893A1 (en) * | 2010-08-27 | 2012-03-01 | Robert Bosch Gmbh | Joining body, comprises first and second joining partners, which are partially connected to each other along connecting zone with weld seam |
| RU2012131708A (en) * | 2012-07-24 | 2014-01-27 | Открытое Акционерное Общество "Научно-Исследовательский Институт Стали" (Оао "Нии Стали") | METHOD FOR WELDING AND / OR SURFACE OF DIFFERENTLY WELDED METALS AND ALLOYS WITH RETURN CASCADE ELECTRODE AND / OR WELDING MOVEMENT |
| CN103659015A (en) * | 2012-09-26 | 2014-03-26 | 上海宝冶集团有限公司 | Four-section segmented skip welding method |
| CN102922085A (en) * | 2012-11-21 | 2013-02-13 | 中国能源建设集团天津电力建设公司 | Manual arc welding bottoming layer Z-shaped arc extinction method and application thereof in Q460 high-strength steel horizontally-fixed steel pipe butt welding |
| KR20150017128A (en) * | 2013-08-06 | 2015-02-16 | 주선숙 | Shot Cross Welding |
| CN105057905A (en) * | 2015-08-13 | 2015-11-18 | 德阳东汽电站机械制造有限公司 | Welding method of large-pipe-diameter exhaust channel of gas turbine |
| CN106271149A (en) * | 2016-08-08 | 2017-01-04 | 东方电气集团东方汽轮机有限公司 | A kind of hollow stationary blade of steam turbine welding method |
| CN107775202A (en) * | 2016-08-27 | 2018-03-09 | 上海宝冶集团有限公司 | The anti-deforming welding method of large-scale metal storage tank |
| CN109108507A (en) * | 2017-06-23 | 2019-01-01 | 伊犁优创锅炉制造有限公司 | A kind of welding method that large-scale storage tank bottom plate renews |
| JP2020017029A (en) * | 2018-07-24 | 2020-01-30 | 株式会社ダイヘン | Optional function usage fee calculation method, optional function usage fee calculation device, and computer program |
| CN109317787A (en) * | 2018-11-14 | 2019-02-12 | 中国能源建设集团安徽电力建设第工程有限公司 | A kind of steel conduit all positon narrow gap TIG automatic welding process |
| CN110625335A (en) * | 2019-09-02 | 2019-12-31 | 北京星航机电装备有限公司 | Welding deformation control method for high-aspect-ratio framework skin wing type component |
| KR20210034870A (en) * | 2019-09-23 | 2021-03-31 | 한국전력공사 | Welding method for high chromium steel |
| CN111545874A (en) * | 2020-03-30 | 2020-08-18 | 广州文冲船舶修造有限公司 | Deformation control method in aluminum alloy hull section manufacturing |
| CN112171095A (en) * | 2020-09-24 | 2021-01-05 | 中车长春轨道客车股份有限公司 | Shape and position deformation control welding method for underframe floor of motor train unit |
| AU2020103879A4 (en) * | 2020-12-03 | 2021-02-11 | Zhimin Li | method for predicting welding deformation of key control points of EMU train body |
| CN113145979A (en) * | 2021-04-29 | 2021-07-23 | 广船国际有限公司 | Welding method of ship window frame |
Non-Patent Citations (3)
| Title |
|---|
| TIG管道焊接机器人焊枪随动装置的设计及应用;张兆弟;安装(第12期);第29-31页 * |
| 分段焊的焊接顺序对T形接头残余应力场的影响;张利国;姬书得;方洪渊;刘雪松;;焊接学报(第12期);第112-115、121页 * |
| 采用"十字分区、对角跳跃"方法预防及控制挠性管板与炉管的焊接变形;祁艳辉;品牌与标准化(第5期);第86-88页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115139000A (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100548562C (en) | The welding method of 50+120mm slab | |
| CN109202254B (en) | Electron beam welding method for dense rectangular circumferential weld of outer ring surface | |
| CN103008895B (en) | Narrow gap multi-pass laser welding method for thick plate | |
| CN110270737A (en) | Box column slab welding process and welding deformation controlling method | |
| CN109454313A (en) | A kind of big specification low-alloy steel tube sheet welding plate preparation process | |
| CN105665898A (en) | Automatic submerged arc welding method for pearlitic heat-resistant steel composite board | |
| CN111872563A (en) | Electric arc-laser double-sided hybrid welding process and equipment with all-position consumable electrode | |
| CN104625322B (en) | Large non-standard device thick-plate all-position welding method | |
| CN103273200A (en) | Laser cladding restoring method for die steel | |
| CN115139000B (en) | Jumping return type welding method | |
| CN101559549A (en) | Process method for rewelding of high strength steel | |
| US2453061A (en) | Electric resistance and filler metal butt welding | |
| CN107252972A (en) | It is a kind of to reduce the laser filling wire welding technique of austenitic stainless steel weld joint solidification cracking | |
| CN105081574A (en) | Method for lowering hot cracking tendency of invar welding through layered pulse lasers | |
| CN103192236B (en) | Wharf ship loader telescoping mechanism rail production process and special rail butt joint tool thereof | |
| CN105904063B (en) | forged steel piece welding method | |
| US6410876B1 (en) | Method for orbital welding of small-, medium-, and large-diameter pipes | |
| CN114918633B (en) | Method for repairing water leakage at root parts of copper pipe and copper cooling wall | |
| CN112570876A (en) | GH4141 nickel-based superalloy vacuum electron beam welding method | |
| CN111347163A (en) | Y-shaped joint laser-TIG composite welding method | |
| CN109664023A (en) | Repair the method for laser welding of base material penetrability defect | |
| CN112338434B (en) | Delayed-cracking-resistant high-strength B-type sleeve fillet welding method | |
| CN109570764A (en) | A kind of laser overlaying welding method of the engine valve conical surface | |
| CN110773894B (en) | Reheating crack control method for welding heat affected zone of large-restraint-degree structural assembly | |
| CN111805053B (en) | Manufacturing method of efficient ultra-supercritical boiler T23 material membrane wall |
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 |