CN103817416A - One-step molding submerged arc welding method for steel sheet docking - Google Patents

One-step molding submerged arc welding method for steel sheet docking Download PDF

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Publication number
CN103817416A
CN103817416A CN201410039758.6A CN201410039758A CN103817416A CN 103817416 A CN103817416 A CN 103817416A CN 201410039758 A CN201410039758 A CN 201410039758A CN 103817416 A CN103817416 A CN 103817416A
Authority
CN
China
Prior art keywords
welding
submerged arc
fixing
tab
arc welding
Prior art date
Application number
CN201410039758.6A
Other languages
Chinese (zh)
Inventor
齐振聪
夏晓萍
胡术朋
张明高
Original Assignee
天津新港船舶重工有限责任公司
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 天津新港船舶重工有限责任公司 filed Critical 天津新港船舶重工有限责任公司
Priority to CN201410039758.6A priority Critical patent/CN103817416A/en
Publication of CN103817416A publication Critical patent/CN103817416A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/02Seam welding; Backing means; Inserts
    • B23K9/035Seam welding; Backing means; Inserts with backing means disposed under the seam
    • B23K9/0356Seam welding; Backing means; Inserts with backing means disposed under the seam the backing means being a tape or strip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/18Submerged-arc welding
    • B23K9/186Submerged-arc welding making use of a consumable electrodes
    • B23K9/188Submerged-arc welding making use of a consumable electrodes making use of several electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/18Sheet panels
    • B23K2101/185Tailored blanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/02Iron or ferrous alloys
    • B23K2103/04Steel or steel alloys

Abstract

The invention provides a one-step molding submerged arc welding method for steel sheet docking. The one-step molding submerged arc welding method includes: evenly paving steel sheets to be docked on a welding platform, and examining whether welding lines of steel sheets to be welded are even and straight; setting gaps; fixing by welding and setting fixing points; applying an end tab and slotting as regulated; fixing a ceramics backing on the reverse side of a welding bead; performing welding, namely paving a submerged arc welding machine walking trolley track and performing timely site adjustment according to walking speed of a submerged arc welding machine and situations of wire feeding transmission and welding flux delivery during welding. The one-step molding submerged arc welding method has the advantages that a double-side welding mode adopted in traditional submerged arc welding is broken through, the problem about concentration of arc heat is solved, the problem about high welding heat transmission is solved, and constraint stress generated from welding is reduced; the ceramics backing is adhered to the reverse side, so that the problems of welding deformation and welding stress brought by twice welding are solved; by the method, electric arc is distracted, heat input is lowered, heat deformation is reduced, and welding line can be formed at one step.

Description

The one-shot forming buried arc welding method of steel thin plate docking
Technical field
The present invention relates to a kind of one-shot forming buried arc welding method of steel thin plate docking.
Background technology
Along with international shipbuilding industry " green, environmental protection " theory is constantly updated, the selection of shipbuilding steel plate thickness more and more tends to meet the minimum thickness of slab under intensity, the particularly construction of the domestic roll-on/roll-off vessel for vehicle just having touched at present, the a large amount of thin plates that adopt 6~10mm in its tens layers of decks, therefore effective control of its thin plate welding deformation is the problem that current domestic colleague perplexs always.Adopting the submerged arc welding mode of traditional steel plate docking, is to adopt two sides welding manner, and welding bead will be accepted twice sweating heat input, is easy to produce larger welding bead linear deformation, and after its thin plate distortion, is difficult to correct.In addition, adopt monofilament submerged arc welding, its welding arc heat is concentrated, and sweating heat input is larger, is also easy to produce thermal deformation.
Summary of the invention
For solving the problem existing in above-mentioned technology, object of the present invention is just to provide a kind of one-shot forming buried arc welding method of steel thin plate docking, to solve the linear deformation problem occurring in plate sheet welding.
For achieving the above object, the technical solution used in the present invention is to provide a kind of one-shot forming buried arc welding method of steel thin plate docking, and the method concrete operation step is as follows:
1) steel thin plate of need docking is laid on jig, whether inspection steel thin plate need weld counterpart smooth, straight;
2) gap is set: adjust the alignment clearance between the thin plate that needs docking, gap value is controlled between 1.5~2mm;
3) electric welding is fixed: adopt the counterpart between the fixing butt jointing thin of electric welding, equidistantly for every 150mm, a fixing point is set along counterpart;
4) apply run-on tab: be welded and fixed run-on tab at the welding bead two ends of implementing welding along counterpart, require run-on tab to select width and length 150mmx150mm, thickness is with welding base metal thickness, and the groove of wide 10~15mm, long 100mm, thickness of slab 1/2 is opened in run-on tab one end;
5) fixed-bearing: the fixing ceramic substrate at the welding bead back side, ceramic substrate centering is close to welding bead both sides, and fixing;
6) implement welding: lay submerged arc welding machine walking dolly track in welding bead one side, adopt the wire submerged arc welding machine that gage of wire is 1.6mm, adjust certain standard and come into effect welding from welding bead one end;
7) welding process adjustment: according to the welding machine speed of travel, wire feed transmission and flux delivery situation in welding process, carry out scene and adjust in time.
Effect of the present invention is to adopt this welding method, utilizes double wire hidden arc welding to connect equipment, and selects minor diameter welding wire, control welding current, so both solve the problem in arc heat quantity set, and improved again sweating heat and inputted large problem, reduced the constraint stress that welding produces; Adopt the back side to post the mode of ceramic substrate simultaneously, also solved welding deformation that twice welding bring and the problem of welding stress.This welding method has been disperseed electric arc, has been fallen low_input_power, reduces thermal deformation, makes weld seam one-shot forming.
Accompanying drawing explanation
Fig. 1 is steel plate of the present invention laid and gap adjustment schematic diagram on jig;
Fig. 2 is the fixing welding bead schematic diagram of electric welding of the present invention;
Fig. 3 is the fixing schematic diagram of run-on tab of the present invention;
Fig. 4 is that ceramic substrate of the present invention posts schematic diagram;
Fig. 5 is the A-A generalized section of Fig. 4;
Fig. 6 is schematic diagram in submerged arc welding device welding gun welding process of the present invention;
Fig. 7 is the A-A generalized section of Fig. 6;
Fig. 8 welding wire position view of the present invention.
In figure:
1, steel plate 2, ceramic substrate 3, run-on tab 4, submerged arc welding machine 5, welding gun
6, gap 7, tack weld 8, welding wire 9, welding bead 10, solder flux
The specific embodiment
By reference to the accompanying drawings the one-shot forming buried arc welding method operating process of steel thin plate docking of the present invention is illustrated.
The method is easy to produce the reason of linear deformation for plate sheet welding, through repetition test, set out with the angle that reduces welding deformation and constraint stress, change little electric current mariages input into, change the back side into and post the mode of the single face welding and double face shaping of ceramic substrate by two-sided welding by the monofilament input of large electric current, implement welding.
As shown in Fig. 1,2,3,4,5, the concrete operation step that steel plate 1 welds is as follows:
1) first as shown in Figure 1, first the steel plate 1 of need docking is laid on jig, checks that whether counterpart is smooth, straight, if desired, need to mend mill.
2) gap is set: according to the actual conditions of thickness of slab, the alignment clearance between the steel plate 1 that need dock according to 6 requirement adjustment, forms welding bead 9.Gap value is controlled between 1.5~2mm.
3) electric welding is fixed: shown in Fig. 2, adopt manual welding mode that welding bead 9 is implemented to tack weld 7, its tack welding spacing is 150~200mm.
8) apply run-on tab: as shown in Figure 3, be welded and fixed run-on tab 3 at welding bead 9 two ends, require run-on tab 3 to select width and length 150mmx150mm, thickness is with welding base metal thickness, and the groove of wide 10~15mm, long 100mm, thickness of slab 1/2 is opened in run-on tab one end.
4) fixed-bearing: as shown in Figure 4,5, the fixing ceramic substrate 2 at welding bead 9 back sides: ceramic substrate 2 centerings are close to welding bead both sides, and the application of force is fixed.
Implement welding: as shown in Figure 6,7, lay submerged arc welding machine walking dolly track in welding bead 9 one sides, adopt the wire submerged arc welding machine 4 that welding wire 8 diameters are 1.6mm, welding gun 5 is stretched in welding bead 9, and according to the actual conditions in the gap 6 of welding bead 9, welding wire 8 is adjusted to position up and down, and pile surfacing agent 10, adjust suitable standard, as shown in the table, come into effect welding from welding bead 9 one end.
5) welding process adjustment: as shown in Figure 8, according to welding machine in welding process 4 walk, welding wire 8 transmissions, solder flux 10 are with the condition of giving a present, carry out wire feed rate, welding current and voltage and adjust in time.
6) after welding treatment: after having welded, the positive welding coating of removing of welding, ceramic substrate 2, air cooling natural temperature are removed in the welding back side.
The one-shot forming buried arc welding method welding operation of steel thin plate docking of the present invention:
(1) joint geometry: V-type
(2) welding method: SAW(automatic submerged arc welding)
(3) mother metal
Material trademark: A step peculiar to vessel
Material specification: 1000mmX300mmX6mmX2
(4) fill metal
Fill the metal trade mark: H10Mn2
Fill compliant metal: ∮=1.6mm
(5) solder flux protection
The solder flux trade mark: SJ101
(6) ceramic substrate: TC-1
(7) welds types: flat docking
(8) single welding or welding by both sides: single welding
(9) whether back chipping of the back side: no
(10) welding position: downhand welding
(11) preheating: without preheating
(12) single track or multiple tracks: single track
Concrete welding parameter welding conditions as shown in the table:

Claims (1)

1. an one-shot forming buried arc welding method for steel thin plate docking, the method includes following steps:
1) steel thin plate of need docking is laid on jig, whether inspection steel thin plate need weld counterpart smooth, straight;
2) gap is set: adjust the alignment clearance between the thin plate that needs docking, gap value is controlled between 1.5~2mm;
3) electric welding is fixed: adopt the counterpart between the fixing butt jointing thin of electric welding, equidistantly for every 150mm, a fixing point is set along counterpart;
4) apply run-on tab: be welded and fixed run-on tab at the welding bead two ends of implementing welding along counterpart, require run-on tab to select width and length 150mmx150mm, thickness is with welding base metal thickness, and the groove of wide 10~15mm, long 100mm, thickness of slab 1/2 is opened in run-on tab one end;
5) fixed-bearing: the fixing ceramic substrate at the welding bead back side, ceramic substrate centering is close to welding bead both sides, and fixing;
6) implement welding: lay submerged arc welding machine walking dolly track in welding bead one side, adopt the wire submerged arc welding machine that gage of wire is 1.6mm, adjust certain standard and come into effect welding from welding bead one end;
7) welding process adjustment: according to the welding machine speed of travel, wire feed transmission and flux delivery situation in welding process, carry out scene and adjust in time.
CN201410039758.6A 2014-01-27 2014-01-27 One-step molding submerged arc welding method for steel sheet docking CN103817416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410039758.6A CN103817416A (en) 2014-01-27 2014-01-27 One-step molding submerged arc welding method for steel sheet docking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410039758.6A CN103817416A (en) 2014-01-27 2014-01-27 One-step molding submerged arc welding method for steel sheet docking

Publications (1)

Publication Number Publication Date
CN103817416A true CN103817416A (en) 2014-05-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104722897A (en) * 2015-03-26 2015-06-24 广州广船国际股份有限公司 Submerged-arc welding backing method
CN104741843A (en) * 2015-04-28 2015-07-01 中船黄埔文冲船舶有限公司 Liner plate tool for correcting thin aluminum alloy plate
CN105772911A (en) * 2016-05-14 2016-07-20 山西阳煤化工机械(集团)有限公司 Submerged automatic arc welding method of steel sheet
CN108176910A (en) * 2017-12-14 2018-06-19 中国核工业华兴建设有限公司 A kind of nuclear power station Leak-tight liner siding band ceramic backing Lincoln weld method
WO2020124580A1 (en) * 2018-12-21 2020-06-25 深圳市柔宇科技有限公司 Fixing method for metal sheet and flexible display equipment

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Publication number Priority date Publication date Assignee Title
US3748429A (en) * 1971-03-15 1973-07-24 Kawasaki Steel Co Multiple-wire single-pass submerged-arc welding method for thick plates
JPS583789A (en) * 1981-06-26 1983-01-10 Mitsubishi Heavy Ind Ltd One side submerged arc welding method
CN1102931A (en) * 1993-02-04 1995-05-24 新日本制铁株式会社 Welding deformation reducing method for one-side strap joint welding
CN101112733A (en) * 2007-08-30 2008-01-30 沈阳飞机工业(集团)有限公司 Hidden arc welding technics
CN101342629A (en) * 2008-08-15 2009-01-14 广州广船国际股份有限公司 Main plate opposing connection welding method
CN101745718A (en) * 2009-12-17 2010-06-23 浙江东海岸船业有限公司 Method for welding thin steel plate
CN101786196A (en) * 2010-02-24 2010-07-28 天津市赛英工程建设咨询管理有限公司 Single-side union melt automatic welding method of ceramic backing with I-shaped joint or Y-shaped groove
CN103008852A (en) * 2012-12-28 2013-04-03 广州广船国际股份有限公司 Submerged arc welding process

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748429A (en) * 1971-03-15 1973-07-24 Kawasaki Steel Co Multiple-wire single-pass submerged-arc welding method for thick plates
JPS583789A (en) * 1981-06-26 1983-01-10 Mitsubishi Heavy Ind Ltd One side submerged arc welding method
CN1102931A (en) * 1993-02-04 1995-05-24 新日本制铁株式会社 Welding deformation reducing method for one-side strap joint welding
CN101112733A (en) * 2007-08-30 2008-01-30 沈阳飞机工业(集团)有限公司 Hidden arc welding technics
CN101342629A (en) * 2008-08-15 2009-01-14 广州广船国际股份有限公司 Main plate opposing connection welding method
CN101745718A (en) * 2009-12-17 2010-06-23 浙江东海岸船业有限公司 Method for welding thin steel plate
CN101786196A (en) * 2010-02-24 2010-07-28 天津市赛英工程建设咨询管理有限公司 Single-side union melt automatic welding method of ceramic backing with I-shaped joint or Y-shaped groove
CN103008852A (en) * 2012-12-28 2013-04-03 广州广船国际股份有限公司 Submerged arc welding process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104722897A (en) * 2015-03-26 2015-06-24 广州广船国际股份有限公司 Submerged-arc welding backing method
CN104722897B (en) * 2015-03-26 2017-03-01 广船国际有限公司 A kind of submerged-arc welding method of priming
CN104741843A (en) * 2015-04-28 2015-07-01 中船黄埔文冲船舶有限公司 Liner plate tool for correcting thin aluminum alloy plate
CN105772911A (en) * 2016-05-14 2016-07-20 山西阳煤化工机械(集团)有限公司 Submerged automatic arc welding method of steel sheet
CN108176910A (en) * 2017-12-14 2018-06-19 中国核工业华兴建设有限公司 A kind of nuclear power station Leak-tight liner siding band ceramic backing Lincoln weld method
WO2020124580A1 (en) * 2018-12-21 2020-06-25 深圳市柔宇科技有限公司 Fixing method for metal sheet and flexible display equipment

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Application publication date: 20140528