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WO2018176696A1 - Procédé de soudage par joint bout à bout vertical pour plaques épaisses - Google Patents

Procédé de soudage par joint bout à bout vertical pour plaques épaisses Download PDF

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Publication number
WO2018176696A1
WO2018176696A1 PCT/CN2017/093622 CN2017093622W WO2018176696A1 WO 2018176696 A1 WO2018176696 A1 WO 2018176696A1 CN 2017093622 W CN2017093622 W CN 2017093622W WO 2018176696 A1 WO2018176696 A1 WO 2018176696A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
welding
butt
weld
weldment
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.)
Ceased
Application number
PCT/CN2017/093622
Other languages
English (en)
Chinese (zh)
Inventor
马金军
江泽新
罗坚
黎剑新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Shipyard International Co Ltd
Original Assignee
Guangzhou Shipyard International Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangzhou Shipyard International Co Ltd filed Critical Guangzhou Shipyard International Co Ltd
Publication of WO2018176696A1 publication Critical patent/WO2018176696A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B23K9/16—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
    • B23K9/02—Seam welding; Backing means; Inserts
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels
    • B23K2101/185—Tailored blanks

Definitions

  • the invention relates to the field of welding technology, in particular to a thick plate vertical butt welding method.
  • vertical vertical butt welds are generally welded by vertical gas welding.
  • ceramic gaskets or copper gaskets are attached to the back of the butt joints of the plates.
  • the front and back surfaces are formed to complete the welding of the entire butt weld.
  • This welding method is generally suitable for the butt joint with a thickness of less than 32 mm.
  • the thickness of the sheet is greater than 32 mm and the board has special requirements for strength or toughness, it must be welded by CO2 semi-automatic or multi-layer automatic welding.
  • the existing welding methods for thick butt welding have the following defects: 1. For vertical plate welding, if vertical gas welding is used, the requirements for steel plates and filling materials are high. If imported steel plates and filler materials are not used, welding after welding. It is difficult to meet the minimum mechanical performance requirements of the joint, so it will increase the cost of welding, and the operation is difficult, the probability of intermediate arc breaking and welding wear is high, and when the arc is broken or the welding wears, the carbon is needed for the front and back. Planing and repairing greatly reduce the efficiency of welding; 2. During the ship loading stage, the joint gap fluctuates greatly. If the vertical plate is used for vertical gas welding, the welding heat input will also change greatly, which is easy to cause. The mechanical properties of the joints are not up to standard; 3.
  • the object of the present invention is to provide a thick plate butt welding method which can effectively improve the welding speed and the quality of the weld.
  • Providing a thick plate vertical butt welding method providing a butt weldment, forming a welding groove on the butt weldment, welding in the groove by using CO2 gas shielded welding to form a weld bottom layer, and adopting vertical gas welding Welding is performed on the weld underlayer to complete the remaining groove fill.
  • the groove is a single-sided groove, the bottom of the groove is located at the back of the butt weldment, and the top of the groove is located on the front side of the butt weldment.
  • the groove is a single-sided V-shaped groove.
  • the angle of the groove is 30° to 45°.
  • a step S11 is further disposed between the step S10 and the step S20, and a lining is attached to the back of the butt weldment and at the bottom of the groove. a pad that blocks the bottom of the groove.
  • a groove is provided on a side of the groove near the groove, and the groove has a width larger than a width of a gap at the bottom of the groove.
  • the groove is an arc-shaped structure that is recessed toward a side away from the groove.
  • the step S40 is further provided, the post-weld treatment is performed, the liner is removed, and the weld bead on both sides of the groove is smoothed until the weld surface and the butt weldment are The surface is flush.
  • the groove of the butt weldment is a double-sided groove.
  • the double-sided groove comprises a front bevel adjacent to the front surface of the butt welding material and a back surface bevel near the back surface of the butt welding material, the bevel angle of the front bevel is 30° to 45°, The groove angle of the back groove is 40° to 50°.
  • the liner is a round bar-shaped liner having a diameter slightly larger than the bottom gap of the groove.
  • the vertical gas welding has a welding current of 400-500 A, a welding voltage of 40-44 V, and a welding speed of 4-8 cm/min.
  • the CO2 gas shielded welding uses a flux-cored wire having a diameter of 1.2 mm, and the model number is E81T1-K2.
  • the vertical gas welding uses a flux-cored wire having a diameter of 1.6 mm, and the grade is DW-S1LG or SC-EG3.
  • the liner is a copper liner or a ceramic liner.
  • the bottom gap of the single-sided groove is 5-16 mm.
  • the bottom gap of the double-sided groove is 5-16 mm.
  • the back surface of the double-sided groove has a depth of 10-15 mm.
  • the butt weldment has a thickness of 32-50 mm.
  • the thick plate vertical butt welding method of the present invention adopts CO2 gas shielded welding to weld the groove first, and can form a bottom layer in the groove and at the bottom or back of the groove to form a weld seam which is difficult to weld, and further
  • the combination of two welding methods for welding thicker butt weldments can not only reduce the operation difficulty, improve the welding quality, but also effectively reduce the heat input of welding.
  • Fig. 1 is a view showing a state in which a single-side groove is formed in a pair of welded parts according to an embodiment of the present invention.
  • Fig. 2 is a view showing a state in which a pair of weldments are attached to a gasket according to an embodiment of the present invention.
  • Fig. 3 is a view showing a state of a pair of welded parts during bottom welding according to an embodiment of the present invention.
  • Fig. 4 is a view showing a state in which a butt weldment is welded at the time of cover welding according to an embodiment of the present invention.
  • Fig. 5 is a view showing a state in which a double-sided groove is formed in a butt weldment according to a second embodiment of the present invention.
  • Fig. 6 is a view showing a state in which a butt weldment is attached to a gasket according to a second embodiment of the present invention.
  • Fig. 7 is a view showing the state of the butt weldment in the case of bottom welding according to the second embodiment of the present invention.
  • Fig. 8 is a view showing the state of the butt weldment in the face welding according to the second embodiment of the present invention.
  • 210 butt weldment; 220, gasket; 230, weld bottom layer; 240, weld cover surface layer; 250, double-sided groove; 251, front groove; 252, back groove.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a thick plate vertical butt welding method is provided. Specifically, a butt weldment 110 is provided, and a welding groove is formed on the butt weldment 110, and the CO2 gas shielded welding is used. The weld is formed in the groove to form the weld bottom layer 130, and the remaining groove fill is welded on the weld bottom layer 130 by vertical gas welding to form the weld cover surface layer 140.
  • the CO2 gas shielded welding is used to weld the groove first, and the underlayer 130 can be formed in the groove and at the bottom of the groove to form a weld seam which is difficult to weld, thereby ensuring the welding quality of the vertical gas welding, and the two welding methods are thicker.
  • the welding of the butt weldment 110 can not only reduce the operation difficulty, improve the welding quality, but also effectively reduce the heat input of the welding.
  • the groove is a single-face groove 150
  • the bottom of the groove is located on the back side of the butt weldment 110
  • the top of the groove is located on the front side of the butt weldment 110 to clean the groove
  • a gasket 120 is attached to the bottom of the butt weldment 110 and at the bottom of the groove, and the gasket 120 seals the bottom of the groove;
  • the single-face groove 150 is a single-sided V-shaped groove, the angle of the single-face groove 150 is 30° to 45°, and the CO2 gas shielded welding is a flux-cored wire with a diameter of 1.2 mm, and the model is E81T1.
  • -K2 vertical gas welding with a diameter of 1.6mm flux cored wire, grade DW-SILG or SC-EG3
  • vertical gas welding welding current is 400-500A
  • welding voltage is 40-44V
  • welding speed is 4-8cm /min.
  • the liner 120 is a copper liner or a ceramic liner.
  • the liner 120 is a ceramic liner.
  • a groove 121 is disposed on a side of the gasket 120 near the groove, and the width of the groove 121 is greater than the width of the gap at the bottom of the groove.
  • the groove 121 is an arc-shaped structure that is recessed toward a side away from the groove.
  • the bottom gap of the single-sided groove 150 is 5-16 mm, and the thickness of the butt weldment 110 is 32-50 mm.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a thick plate vertical butt welding method is provided, and specifically, a butt weldment 210 is provided, and a welding groove is formed on the butt weldment 210, and the CO2 gas shielded welding is used.
  • the weld is formed in the groove to form the weld bottom layer 230, and the remaining groove fill is welded on the weld bottom layer by vertical gas welding to form the weld cover surface layer 240.
  • the CO2 gas shielded welding is used to weld the groove first, and the underlayer 230 can be formed in the groove and at the bottom of the groove to form a weld seam which is difficult to weld, thereby ensuring the welding quality of the vertical gas welding, and the two welding methods are thicker.
  • the welding of the butt weldment 210 can not only reduce the operation difficulty, improve the welding quality, but also effectively reduce the heat input of the welding.
  • the butt weldment 210 is provided with a groove, the groove is a double-sided groove 250, which has a front groove 251 near the front surface of the butt weldment 210 and a back groove 252 near the back surface of the butt weldment 210, Cleaning the groove;
  • the liner 220 is a round bar-shaped liner having a diameter slightly larger than the bottom gap of the groove.
  • the bottom of the groove here refers to the intersection of the front groove 251 and the back groove 252, that is, the bottom of the groove is located inside the butt weldment 210.
  • the groove is a double-sided groove 250, and the groove angle of the front groove 251 is 30°. 45°, the groove angle of the back groove 252 is 40° ⁇ 50°, the CO2 gas shielded welding adopts the flux-cored wire with the diameter of 1.2mm, the model number is E81T1-K2, and the vertical gas welding adopts the core of 1.6mm diameter.
  • the welding wire is graded as DW-SILG or SC-EG3.
  • the welding current of vertical gas welding is 400-500A, the welding voltage is 40-44V, and the welding speed is 4-8cm/min.
  • the liner 220 is a copper liner or a ceramic liner.
  • the liner 220 is a copper rod.
  • the bottom gap of the double-sided groove 250 is 5-16 mm
  • the back groove 252 of the double-sided groove 250 has a depth of 10-15 mm
  • the thickness of the butt weldment 210 is 32-50 mm.
  • the present invention has the following advantages:

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

L'invention concerne un procédé de soudage par joint bout à bout vertical pour plaques épaisses, le procédé consistant à: fournir de pièces de soudage devant être jointes bout à bout (110), créer une rainure pour le soudage sur les pièces de soudage devant être jointes bout à bout (110), réaliser un soudage à l'arc sous gaz CO2 protecteur dans la rainure pour former une couche de base de soudure (130), et réaliser un soudage par électro-gaz vertical sur la couche de base de soudure (130) pour achever le remplissage de rainure restante et former une couche de recouvrement de soudure (140). En utilisant un soudage à l'arc sous gaz CO2 protecteur destiné à effectuer un soudage initial sur la rainure, une couche de base de soudure difficile à souder peut être formée au niveau d'une partie inférieure ou d'une surface arrière de la rainure, assurant ainsi une qualité de soudage de l'opération de soudage par électro-gaz verticale suivante. En combinant deux techniques de soudage pour souder des pièces de soudage épaisses devant être jointes bout à bout, la présente invention diminue les difficultés opérationnelles, améliore la qualité de soudage, et réduit efficacement une entrée de chaleur de soudage.
PCT/CN2017/093622 2017-03-30 2017-07-20 Procédé de soudage par joint bout à bout vertical pour plaques épaisses Ceased WO2018176696A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710201481.6A CN106862730A (zh) 2017-03-30 2017-03-30 一种厚板立对接焊接方法
CN201710201481.6 2017-03-30

Publications (1)

Publication Number Publication Date
WO2018176696A1 true WO2018176696A1 (fr) 2018-10-04

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PCT/CN2017/093622 Ceased WO2018176696A1 (fr) 2017-03-30 2017-07-20 Procédé de soudage par joint bout à bout vertical pour plaques épaisses

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CN (1) CN106862730A (fr)
WO (1) WO2018176696A1 (fr)

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* Cited by examiner, † Cited by third party
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CN106862730A (zh) * 2017-03-30 2017-06-20 广船国际有限公司 一种厚板立对接焊接方法
CN107322132A (zh) * 2017-08-28 2017-11-07 上海外高桥造船有限公司 一种大于38mm厚度船体钢板的焊接方法
CN108213663A (zh) * 2018-01-17 2018-06-29 兰州兰石重型装备股份有限公司 大厚度筒体与接管的全焊透焊接方法
CN109014775B (zh) * 2018-07-19 2021-06-01 沪东中华造船(集团)有限公司 一种对接船舶艏艉柱两侧的舷外板的方法
CN108705186A (zh) * 2018-07-20 2018-10-26 四川汇源钢建装配建筑有限公司 一种1.6mm焊丝焊接宽间隙的方法及焊接件
CN108907418A (zh) * 2018-07-20 2018-11-30 四川汇源钢建装配建筑有限公司 一种宽间隙焊接方法及焊接件
CN110449706A (zh) * 2019-08-21 2019-11-15 无锡市创新低温环模设备科技有限公司 一种铝合金焊接背面成型保护装置
CN112440076A (zh) * 2019-08-29 2021-03-05 招远市金亭岭矿业有限公司 一种用于球磨机端盖修复的方法
CN112276293A (zh) * 2020-10-29 2021-01-29 广船国际有限公司 一种管桩环缝的焊接方法
CN112894090A (zh) * 2021-01-29 2021-06-04 广船国际有限公司 一种LNG罐体用9Ni钢的焊接方法
CN114309891A (zh) * 2021-06-28 2022-04-12 上海江南长兴造船有限责任公司 一种提高厚板立对接焊焊接效率的方法
CN114850624A (zh) * 2022-05-26 2022-08-05 广船国际有限公司 一种止裂钢板立对接全自动焊接方法
CN115055786A (zh) * 2022-07-27 2022-09-16 广船国际有限公司 一种厚板立对接焊缝的焊接方法
CN119057285A (zh) * 2024-10-09 2024-12-03 上海外高桥造船有限公司 一种大厚度船体的焊接方法
CN119973289A (zh) * 2025-03-10 2025-05-13 烟台哈尔滨工程大学研究院 一种中厚度钢板接长工艺

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