CN112059364A - Process method for submerged arc welding of ship plate butt joint with plane arc-shaped welding line - Google Patents

Process method for submerged arc welding of ship plate butt joint with plane arc-shaped welding line Download PDF

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Publication number
CN112059364A
CN112059364A CN202010918037.8A CN202010918037A CN112059364A CN 112059364 A CN112059364 A CN 112059364A CN 202010918037 A CN202010918037 A CN 202010918037A CN 112059364 A CN112059364 A CN 112059364A
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China
Prior art keywords
welding
arc welding
submerged arc
ship plate
ship
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Pending
Application number
CN202010918037.8A
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Chinese (zh)
Inventor
陈哲
程晋宜
汪春标
张耀
仝明磊
王勇
肖建军
田雷
李啸
闵祥军
崔良
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Offshore Oil Engineering Co Ltd
Offshore Oil Engineering Qingdao Co Ltd
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Offshore Oil Engineering Co Ltd
Offshore Oil Engineering Qingdao Co Ltd
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Application filed by Offshore Oil Engineering Co Ltd, Offshore Oil Engineering Qingdao Co Ltd filed Critical Offshore Oil Engineering Co Ltd
Priority to CN202010918037.8A priority Critical patent/CN112059364A/en
Publication of CN112059364A publication Critical patent/CN112059364A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • 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
    • B23K9/18—Submerged-arc 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
    • B23K9/00—Arc welding or cutting
    • B23K9/235—Preliminary treatment

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

The invention discloses a process method for submerged arc welding of ship plate butt joint with a plane arc-shaped welding line, which comprises the following steps: preparing a groove before welding and preparing an assembly process; the front side of the arc welding seam of the ship plate is subjected to submerged arc welding; turning the whole ship plate; a reverse side treatment process of the ship board; and (5) carrying out submerged-arc welding on the reverse side of the arc-shaped welding line of the ship plate. The ship plate butt submerged arc welding process method has the advantages of being simple to operate and high in weld quality, meets practical requirements, is suitable for welding construction and large-scale popularization and application of ship plates with plane arc-shaped welds, and solves the problems that manual welding or semi-automatic welding is low in efficiency and high in welding defect rate in the prior art.

Description

Process method for submerged arc welding of ship plate butt joint with plane arc-shaped welding line
Technical Field
The invention relates to the technical field of ship plate welding, in particular to a process method for submerged arc welding of ship plate butt joint with a plane arc-shaped welding line.
Background
In the ship plate welding construction, a large number of plane arc-shaped welding seams are often subjected to butt joint work, the wall thickness of the welding seams is generally 15mm to 20mm, and the ship plate welding seam has the characteristics of long length (more than 6 m), small radian, consistent bending direction and unfixed curvature.
When welding such welding seams, the prior method is to adopt manual electric arc welding for bottoming, and flux-cored gas shielded welding for filling the cover surface; or bottoming, filling and capping the front surface of the ship plate by adopting the flux-cored gas shielded welding, turning the ship plate, then gouging back to remove roots, and filling and capping the back surface by adopting the flux-cored gas shielded welding. Because the length of the welding seam is longer, the efficiency is lower by adopting a manual welding or semi-automatic welding mode, and the welding defect rate is higher.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of the above, the present invention needs to provide a process for submerged arc welding of ship plates with planar arc welding seams, which has the advantages of simple operation and high quality of welding seams, meets the actual requirements, is suitable for welding construction and large-scale popularization and application of ship plates with planar arc welding seams, and solves the problems of low efficiency and high welding defect rate of the manual welding or semi-automatic welding mode adopted in the prior art.
The invention provides a process method for submerged arc welding of ship plate butt joint with a plane arc-shaped welding line, which comprises the following steps:
s1, preparing a pre-welding notch and preparing an assembly process;
s2, carrying out front submerged arc welding on the arc-shaped welding seam of the ship plate;
s3, turning the whole ship board;
s4, a step of processing the back surface of the ship board;
and S5, carrying out reverse submerged arc welding on the arc welding seam of the ship plate.
According to an embodiment of the invention, in step S1, flame cutting is performed on the base metal of the ship plate, a planar arc-shaped welding seam groove is processed, and the blunt edge of the groove is polished; and horizontally placing the ship plate base metal for assembly, wherein the opening of the groove is upward, the root gap is 0-1 mm, and performing positioning welding on the root of the ship plate base metal by using consumable electrode gas shielded welding.
According to an embodiment of the present invention, in step S2, the ship plate is submerged arc welded by using a submerged arc welding carriage, wherein the submerged arc welding carriage includes a carriage body, a traveling assembly and a welding gun, the traveling assembly includes a rear wheel provided on the carriage body and a front wheel device for adjusting a traveling direction of the carriage body, and the welding gun is provided on the carriage body and is located at one side of the front wheel device.
According to one embodiment of the invention, the front wheel device comprises a main rod, a rotating platform, a front wheel and an adjusting screw, wherein one end of the main rod is connected with the trolley main body so as to guide the travelling direction of the trolley main body; the top of the rotating platform is connected with the middle section of the main rod; the front wheel is connected to the rotating platform in a rotating manner; the adjusting screw is in threaded connection with the main rod, the top end of the adjusting screw abuts against the front wheel to adjust the deflection direction of the front wheel, and a compression spring is arranged between the main rod and the front wheel.
According to an embodiment of the invention, the submerged arc welding trolley is placed on the front surface of the assembled ship plate base metal in the step S2, the rear wheel of the submerged arc welding trolley is started, the front wheel device of the submerged arc welding trolley is adjusted in real time through rotating an adjusting screw, the submerged arc welding trolley determines a walking debugging route along a plane arc welding line, and then the submerged arc welding trolley is started and carries out submerged arc automatic welding on the opening surface of a welding line groove along the walking debugging route.
According to an embodiment of the present invention, after the front welding of the ship plate parent metal is completed in step S3, the ship plate is turned over and horizontally placed by using a crane.
According to an embodiment of the present invention, the completion of the formation of the back of the root bead of the deck is observed in step S4, and the grinding process is performed on the position of the root bead having poor formation quality.
According to one embodiment of the invention, the submerged-arc welding trolley is placed on the reverse side of the ship plate base metal in the step S5, the submerged-arc welding trolley is started, the front wheel device of the submerged-arc welding trolley is adjusted in real time by rotating the adjusting screw, the submerged-arc welding gun is ensured to be always positioned at the center position of the reverse side root of the plane arc welding seam groove, and one-step cover surface welding of the reverse side welding seam is completed.
According to one embodiment of the invention, the angle of the groove of the plane arc welding seam is 55-65 degrees, and the grinding treatment thickness of the truncated edge of the groove is 1-2 mm.
The technological method for the butt submerged arc welding of the ship plate with the plane arc welding line controls and guides the traveling direction of the front wheel through the main rod and the adjusting screw in the front wheel device, and then the submerged arc welding trolley moves along the set traveling debugging route, so that the submerged arc welding of the welding line groove on the front side or the back side of the ship plate base metal is completed.
Drawings
FIG. 1 is a schematic illustration of submerged arc butt welding of a flat arc welded ship plate according to the present invention.
Fig. 2 is a schematic structural view of the front wheel device in fig. 1.
Fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.
FIG. 4 is a schematic diagram of the assembly of the butt arc welding grooves of the ship plates in FIG. 1.
FIG. 5 is a schematic view of the formation of a weld arc of the ship plate in the present invention.
FIG. 6 is a flow chart illustrating the steps of a process for submerged arc butt welding of a ship plate with a planar arc-shaped welding seam according to the invention.
Reference numerals: 1-a ship board; 2-trolley body; 3-a front wheel device; 4 is-rear wheel; 5-a welding gun; 6-plane arc welding seam groove; 7-the main rod; 8-rotating table; 9-front wheels; 10-adjusting screws; 11-a compression spring; 12-beveling the truncated edge; 13-root clearance; 14-bevel angle; 15-front welding bead; 16-reverse bead.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 6, a process method for submerged arc butt welding of a ship plate with a plane arc-shaped welding seam comprises the following steps:
s100, preparing a groove before welding and preparing an assembly process,
performing flame cutting on a base material of a ship plate 1, processing a planar arc welding seam groove 6, polishing a blunt edge of the groove, wherein the angle of the planar arc welding seam groove 14 is 55-65 degrees, the polishing thickness of the blunt edge 12 of the groove is 1-2 mm, horizontally placing the base materials of the ship plate 1 for pairing, the opening of the groove is upward, a root gap 13 is 0-1 mm, performing positioning welding on the root of the base material of the ship plate 1 by using gas metal arc welding, wherein the positioning welding selects a position (more than 1 mm) with larger time root gap, ensures that the root gap of the whole welding seam meets 0-1 mm, adopts a welding wire of the gas metal arc welding JM-58 with the diameter of 1.2mm and a protective gas of 80% argon and 20% carbon dioxide, adopts a current of 120-140A for the positioning welding, a voltage of 13-16V and a welding speed of 100-150mm/min, heat input is 0.8-1.1 KJ/mm;
s200, carrying out front submerged arc welding on the arc-shaped welding seam of the ship plate,
step S2, placing a submerged-arc welding trolley on the front side of a base metal of the assembled ship plate 1, starting a rear wheel 4 of the submerged-arc welding trolley, adjusting a front wheel device 3 of the submerged-arc welding trolley in real time by rotating an adjusting screw 10, enabling the submerged-arc welding trolley to determine a walking debugging route along a plane arc welding line, ensuring that a submerged-arc welding gun 5 is always at the center position of a welding line groove 6, then starting the submerged-arc welding trolley and carrying out submerged-arc automatic welding on an opening surface of the welding line groove 6 along the walking debugging route, completing a front welding bead 15, understanding that the welding current is properly reduced when the submerged-arc welding is bottoming, improving the welding speed to prevent burning through, and then carrying out filling and cover surface welding, wherein the submerged-arc welding wire adopted in the embodiment is JW-1, the diameter is 4.0mm, the welding flux JF-B, the bottoming welding adopts the current of 400 and 460A, the welding speed is 380-;
s300, turning over the whole ship plate,
after the front welding of the parent metal of the ship plate 1 is finished, turning over and horizontally placing the ship plate 1 by using a crane;
s400, a reverse side treatment process of the ship board,
observing the forming completion condition of the back of the root weld bead of the ship plate 1, and polishing the position of the root weld bead with poor forming quality;
s500, carrying out reverse submerged arc welding on the arc welding seam of the ship plate,
the method comprises the steps of placing a submerged-arc welding trolley on the reverse side of a base material of a ship plate 1, starting the submerged-arc welding trolley, adjusting a front wheel device 3 of the submerged-arc welding trolley in real time by rotating an adjusting screw 10, ensuring that a submerged-arc welding gun 5 is always positioned at the center of the root of the reverse side of a plane arc welding seam groove 6, completing one step of cover surface welding of a reverse side welding seam, and forming a reverse side welding bead 16, wherein the reverse side submerged-arc welding requires to select large current, the fusion depth is ensured, and incomplete penetration is prevented, wherein the submerged-arc welding wire adopted in the embodiment is JW-1, the diameter is 4.0mm, a welding flux JF-B is adopted, the reverse side cover surface welding adopts flow 550 and heat-up 650A, the voltage is 30-34V, the welding speed is 260 and heat input.
The technological method for the butt submerged arc welding of the ship plate with the plane arc welding line controls and guides the traveling direction of the front wheel through the main rod and the adjusting screw in the front wheel device, and then the submerged arc welding trolley moves along the set traveling debugging route, so that the submerged arc welding of the welding line groove on the front side or the back side of the ship plate base metal is completed.
As shown in fig. 1 to 3, in step S200, a submerged arc welding trolley is used for performing submerged arc welding on the ship plate 1, wherein the submerged arc welding trolley comprises a trolley main body 2, a traveling assembly and a welding gun 5, the traveling assembly comprises a rear wheel 4 arranged on the trolley main body 2 and a front wheel device 3 used for adjusting the traveling direction of the trolley main body 2, the welding gun 5 is arranged on the trolley main body 2 and is positioned at one side of the front wheel device 3, the front wheel device 3 comprises a main rod 7, a rotating table 8, a front wheel 9 and an adjusting screw 10, and one end of the main rod 7 is connected with the trolley main body 2 so as to guide the traveling direction of the trolley main body 2; the top of the rotating platform 8 is connected with the middle section of the main rod 7; the front wheel 9 is rotationally connected to the rotating platform 8; the adjusting screw 10 is connected to the main rod 7 in a threaded mode, the top end of the adjusting screw 10 abuts against the front wheel 9 to adjust the deflection direction of the front wheel 9, a compression spring 11 is arranged between the main rod 7 and the front wheel 9, and through the use of the submerged arc welding trolley, the main rod 7 and the adjusting screw 10 are controlled to guide the submerged arc welding trolley to move along a preset walking debugging route, so that the walking position of the welding gun 5 is accurately controlled, and high-quality welding seam groove welding of the base metal of the ship plate 1 is completed.
The submerged arc welding trolley main body, the rear wheel of the submerged arc welding trolley and the submerged arc welding gun are prior art, and the unexplained technology is prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (9)

1. A process method for submerged arc welding of ship plate butt joint with plane arc-shaped welding seams is characterized by comprising the following steps:
s1, preparing a pre-welding notch and preparing an assembly process;
s2, carrying out front submerged arc welding on the arc-shaped welding seam of the ship plate;
s3, turning the whole ship board;
s4, a step of processing the back surface of the ship board;
and S5, carrying out reverse submerged arc welding on the arc welding seam of the ship plate.
2. The process of submerged arc welding for butt joint of a ship plate with a planar arc-shaped welding line according to claim 1, wherein in step S1, the parent material of the ship plate is flame cut, a groove of the planar arc-shaped welding line is processed, and the blunt edge of the groove is polished; and horizontally placing the ship plate base metal for assembly, wherein the opening of the groove is upward, the root gap is 0-1 mm, and performing positioning welding on the root of the ship plate base metal by using consumable electrode gas shielded welding.
3. The process of submerged arc welding for butt joint of ship plates with planar arc welding seams as claimed in claim 1, wherein the submerged arc welding trolley is used for submerged arc welding of the ship plates in step S2, wherein the submerged arc welding trolley comprises a trolley body, a traveling assembly and a welding gun, the traveling assembly comprises a rear wheel arranged on the trolley body and a front wheel device used for adjusting the traveling direction of the trolley body, and the welding gun is arranged on the trolley body and is positioned on one side of the front wheel device.
4. The process of submerged arc welding of ship plate butt joint with planar arc welding seam as claimed in claim 3, characterized in that said front wheel device comprises a main rod, a rotating table, a front wheel and an adjusting screw, one end of said main rod is connected with said trolley body to guide the walking direction of said trolley body; the top of the rotating platform is connected with the middle section of the main rod; the front wheel is connected to the rotating platform in a rotating manner; the adjusting screw is in threaded connection with the main rod, the top end of the adjusting screw abuts against the front wheel to adjust the deflection direction of the front wheel, and a compression spring is arranged between the main rod and the front wheel.
5. The process of submerged arc welding for ship plate butt joint of plane arc welding seam as claimed in claim 4, characterized in that the submerged arc welding trolley is placed on the front surface of the assembled ship plate mother plate in step S2, the rear wheel of the submerged arc welding trolley is turned on, the front wheel device of the submerged arc welding trolley is adjusted in real time by rotating the adjusting screw, the submerged arc welding trolley is made to determine a walking debugging route along the plane arc welding seam, and then the submerged arc welding trolley is turned on and the opening surface of the welding seam groove is automatically welded along the walking debugging route.
6. The process of submerged arc welding for butt joint of ship plates with planar arc-shaped welding seams as claimed in claim 1, wherein in step S3, after the ship plate base material is welded on the front side, the ship plate is turned over and horizontally placed by a crane.
7. The process of submerged arc welding for butt joint of a ship plate with a planar arc-shaped welding line according to claim 1, wherein the completion of the forming of the back of the root bead of the ship plate is observed in step S4, and the grinding process is performed on the position of the root bead with poor forming quality.
8. The process of claim 4, wherein the submerged arc welding carriage is placed on the reverse side of the base material of the ship plate in step S5, the submerged arc welding carriage is started, the front wheel device of the submerged arc welding carriage is adjusted in real time by rotating the adjusting screw, the submerged arc welding gun is always in the center position of the reverse side root of the groove of the plane arc welding line, and one cover welding to the reverse side welding line is completed.
9. The process method for submerged arc butt welding of a ship plate with a planar arc-shaped welding line according to claim 2, wherein the groove angle of the planar arc-shaped welding line is 55-65 degrees, and the grinding treatment thickness of the truncated edge of the groove is 1-2 mm.
CN202010918037.8A 2020-09-03 2020-09-03 Process method for submerged arc welding of ship plate butt joint with plane arc-shaped welding line Pending CN112059364A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601466A (en) * 1944-08-15 1948-05-06 Linde Air Prod Co Electric welding control system
WO1990014922A1 (en) * 1989-05-30 1990-12-13 Institut Elektrosvarki Imeni E.O.Patona Akademii Nauk Ukrainskoi Ssr Installation for arc welding
CN201940731U (en) * 2011-03-14 2011-08-24 济宁奥太电气有限公司 Multifunctional submerged arc welding vehicle
CN106270972A (en) * 2016-09-18 2017-01-04 中国二十二冶集团有限公司 Fan-shaped steel plate splicing welding method
CN107322132A (en) * 2017-08-28 2017-11-07 上海外高桥造船有限公司 A kind of welding method more than 38mm thickness hull plates
CN107876941A (en) * 2016-09-29 2018-04-06 海阳中集来福士海洋工程有限公司 Steel plate buried arc welding method
KR20180038132A (en) * 2016-10-06 2018-04-16 세원셀론텍(주) Apparatus for steel plate butt submerged arc welding
CN110280873A (en) * 2019-07-02 2019-09-27 上海外高桥造船有限公司 The buried arc welding method of Y type groove jigsaw
DE102019007537A1 (en) * 2019-10-30 2020-04-02 Daimler Ag Method for the welding connection of at least two flat and mutually at least partially overlapping components and welded component

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601466A (en) * 1944-08-15 1948-05-06 Linde Air Prod Co Electric welding control system
WO1990014922A1 (en) * 1989-05-30 1990-12-13 Institut Elektrosvarki Imeni E.O.Patona Akademii Nauk Ukrainskoi Ssr Installation for arc welding
CN201940731U (en) * 2011-03-14 2011-08-24 济宁奥太电气有限公司 Multifunctional submerged arc welding vehicle
CN106270972A (en) * 2016-09-18 2017-01-04 中国二十二冶集团有限公司 Fan-shaped steel plate splicing welding method
CN107876941A (en) * 2016-09-29 2018-04-06 海阳中集来福士海洋工程有限公司 Steel plate buried arc welding method
KR20180038132A (en) * 2016-10-06 2018-04-16 세원셀론텍(주) Apparatus for steel plate butt submerged arc welding
CN107322132A (en) * 2017-08-28 2017-11-07 上海外高桥造船有限公司 A kind of welding method more than 38mm thickness hull plates
CN110280873A (en) * 2019-07-02 2019-09-27 上海外高桥造船有限公司 The buried arc welding method of Y type groove jigsaw
DE102019007537A1 (en) * 2019-10-30 2020-04-02 Daimler Ag Method for the welding connection of at least two flat and mutually at least partially overlapping components and welded component

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