CN107322132A - A kind of welding method more than 38mm thickness hull plates - Google Patents
A kind of welding method more than 38mm thickness hull plates Download PDFInfo
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- CN107322132A CN107322132A CN201710748593.3A CN201710748593A CN107322132A CN 107322132 A CN107322132 A CN 107322132A CN 201710748593 A CN201710748593 A CN 201710748593A CN 107322132 A CN107322132 A CN 107322132A
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- Prior art keywords
- welding
- steel plate
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- groove
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Classifications
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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
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous 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
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention discloses a kind of welding method more than 38mm thickness hull plates, including：Step one, by two pieces of steel plate docking and bevel cut, when the thickness of steel plate is less than 49mm, groove is Y-shaped, and angle is 39~45 °, and depth is 28~32mm, and root gap is 0~1mm, and pure side is 10~30mm；When the thickness of steel plate is more than 49mm, groove is in double Y shapes, and the angle of front groove is 39~45 °, and depth is 28~32mm, and pure side is 12~16mm, and root gap is 0~1mm, and the angle of underside groove is 85~100 °；Step 2, uses three FCB methods welding to complete throat depth for 28~32mm in the front of steel plate；Step 3, using carbon arc air gouging and the root of weld at the polishing cleaning steel plate back side；Step 4, remaining throat depth is completed at the back side of steel plate using the welding of monofilament submerged arc welding method.The welding method of the present invention can improve welding efficiency.
Description
Technical field
The present invention relates to a kind of welding method, and in particular to a kind of welding method more than 38mm thickness hull plates.
Background technology
The workload about 45% of shipbuilding production is using welding, and large area splice joint is the groundwork in production.With
The fast development of shipbuilding industry, FCB methods welding technique as a kind of single face welding and double face shaping efficient welding technology, in China's ship
Application in construction is more and more extensive.The current welding method is mainly used in cut deal, large-sized mild steel and low-alloy
The splicing of steel plate, this method can once weld completion to thickness for 5~35mm steel plate, and use single V groove with root face, bevel angle
For 42~48 °, root face is 5~7mm, and root gap is 1mm.Due to FCB law technology features, can not weld more than 38mm is right
EH36 hull plates more than 38mm (such as 49mm thickness) can only take other methods to weld.Such as use traditional monofilament submerged-arc welding
Method, this method it is less efficient, the EH36 of general 49mm thickness steel plate positive and negative will weld 18~20 road welding beads altogether, and this is to making
The efficiency influence of ship production is larger.
The content of the invention
A kind of weldering more than 38mm thickness hull plates is provided it is an object of the invention to overcome the defect of prior art
Method is connect, it can not only greatly improve welding efficiency, the energy can be saved again.
The object of the present invention is achieved like this：A kind of welding method more than 38mm thickness hull plates, is applicable EH36
With the splice joint of subordinate's steel plate；The welding method comprises the following steps：
Step one, by two pieces of steel plate docking and in docking port bevel cut, when the thickness of steel plate is less than 49mm, the slope
Mouthful Y-shaped, and bevel angle is 39~45 °, groove depth is 28~32mm, and root gap is 0~1mm, pure side is 10~
30mm；When the thickness of steel plate is more than 49mm, the groove is in double Y shapes, and the angle of front groove is 39~45 °, front
The depth of groove is 28~32mm, and pure side is 12~16mm, and root gap is 0~1mm, the angle of underside groove for 85~
100°；
Step 2, in the front of steel plate using three FCB methods welding, first uniformly dispenses 4~6mm thickness on copper pad
Solder flux is padded, then the copper pad for laying pad solder flux is pressed at the docking port at the steel plate back side with jack unit, makes it
It is brought into close contact with steel plate, then single-side multi-layer welding is carried out at the positive groove of steel plate, it is final to weld the weld seam thickness for completing steel plate
Spend for 28~32mm；
Step 3, by steel plate turn-over, and the back side of steel plate to completed the root of weld of welding using carbon arc air gouging and
Polishing mode is cleared up；
Step 4, is welded at the back side of steel plate using monofilament submerged arc welding method, first lays broken welding wires in the root of weld,
Then bottoming welding, filling welding and cover welding are carried out successively, and number of weld passes is determined according to the thickness of steel plate, has finally been welded
Into remaining throat depth of steel plate.
The above-mentioned welding method more than 38mm thickness hull plates, wherein, when carrying out the FCB methods welding, layer is
Three, welding first layer when using a diameter of 4.8mm solid core welding wire, welding wire elongation be 25~55mm, welding wire angle for-
15 °, use alternating current and welding current is 1410~1460A, weldingvoltage is 32~34V, 330~354mm/ of speed of welding
min；Using a diameter of 4.8mm solid core welding wire during second layer of welding, welding wire elongation is 25~55mm, and welding wire angle is
0 °, use alternating current and welding current is 1230~1270A, weldingvoltage is 41~45V, 330~354mm/ of speed of welding
min；Using a diameter of 6.4mm solid core welding wire when welding the 3rd layer, welding wire elongation is 25~55mm, and welding wire angle is
2.5 °, use alternating current and welding current is 1230~1270A, weldingvoltage is 47~51V, 330~354mm/ of speed of welding
min。
The above-mentioned welding method more than 38mm thickness hull plates, wherein, carry out before the FCB methods welding, in addition it is also necessary to
Steel plate is preheated；When steel billet temperature is less than 0 DEG C, steel plate is preheated at least 21 DEG C；When steel plate thickness is more than 20mm, steel
Plate is preheated at least 10 DEG C.
The above-mentioned welding method more than 38mm thickness hull plates, wherein, when carrying out the monofilament submerged arc welding, use
A diameter of 4mm solid core welding wire, welding wire elongation is 15~45mm, and welding wire angle is 0~10 °；When carrying out bottoming welding, using straight
Flow reversal connection and welding current is 650~740A, weldingvoltage is 28~33V, and speed of welding is 360~430mm/min；Filled out
When filling welding, use DC reverse connection and welding current is 660~750A, weldingvoltage be 29~34V, speed of welding be 440~
540mm/min；When carrying out cover welding, use DC reverse connection and welding current is 680~760A, weldingvoltage is 30~35V,
Speed of welding is 390~480mm/min.
The above-mentioned welding method more than 38mm thickness hull plates, wherein, carry out before the monofilament submerged arc welding method welding,
Also need to preheat steel plate；When steel billet temperature is less than 0 DEG C, steel plate is at least preheating to 21 DEG C；When steel plate thickness is more than
20mm, steel plate is at least preheating to 10 DEG C；When steel plate thickness is more than 38mm, steel plate is at least preheating to 65 DEG C.
The above-mentioned welding method more than 38mm thickness hull plates, wherein, when carrying out the monofilament submerged arc welding, laying
The thickness of the broken welding wires is not less than 0.9 times of the thickness of steel plate and the no more than thickness of steel plate.
The welding method more than 38mm thickness hull plates of the present invention has the characteristics that：Using FCB welding methods and monofilament
The welding method that submerged arc welding method is combined, realizes that expansion of three FCB methods to ultra-thick steel plates is used, not only maintains FCB welding methods
With the welding advantage of monofilament submerged arc welding method, superior in quality weld seam is obtained, and avoid lack of penetration, burn-through, fill discontented etc.
Defect, moreover it is possible to greatly improve welding efficiency, can save the energy again.
Brief description of the drawings
Fig. 1 be complete the present invention more than 38mm thickness hull plates welding method the step of one after a kind of groove
Structural representation；
Fig. 2 be complete the present invention more than 38mm thickness hull plates welding method the step of one after another slope
The structural representation of mouth；
Fig. 3 be complete the present invention more than 38mm thickness hull plates welding method the step of four after weld seam knot
Structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of welding method more than 38mmmm thickness hull plates of the present invention, is applicable EH36 with the jigsaw of subordinate's steel plate
Welding.The welding method of the present invention comprises the following steps：
Step one, by two pieces of docking of steel plate 1,1 ' and in docking port bevel cut, when the thickness of steel plate 1,1 ' is less than 49mm
When, groove 10 is Y-shaped, and bevel angle is 39~45 °, and groove depth is 28~32mm, and root gap is 0~1mm, pure side
For 10~30mm (see Fig. 1)；When the thickness of steel plate 1,1 ' is more than 49mm, groove is in double Y shapes, and the angle of front groove 10
For 39~45 °, the depth of front groove 10 is 28~32mm, and pure side is 12~16mm, and root gap is 0~1mm, underside groove
10 ' angle is 85~100 ° (see Fig. 2)；
Step 2, in the front of steel plate using three FCB methods welding；When steel billet temperature is less than 0 DEG C, steel plate is preheated to
At least 21 DEG C；When steel plate thickness is more than 20mm, steel plate is preheated at least 10 DEG C；It is first uniform on copper pad to dispense 4~6mm thickness
The pad solder flux of degree, then with the simple jack unit such as air hose by the copper pad for laying pad solder flux be pressed to steel plate 1,
At the docking port at the 1 ' back side, it is set to be brought into close contact with steel plate 1,1 ', then from steel plate 1,1 ' positive groove 10 or 10 ' carry out one side
Multilayer is welded, and layer is three；Using a diameter of 4.8mm solid core welding wire during first layer of welding, welding wire elongation is
25~55mm, welding wire angle is -15 °, uses alternating current and welding current is 1410~1460A, and weldingvoltage is 32~34V,
330~354mm/min of speed of welding；Using a diameter of 4.8mm solid core welding wire during second layer of welding, welding wire elongation is 25
~55mm, welding wire angle is 0 °, uses alternating current and welding current is 1230~1270A, and weldingvoltage is 41~45V, welding
330~354mm/min of speed；Using a diameter of 6.4mm solid core welding wire when welding the 3rd layer, welding wire elongation for 25~
55mm, welding wire angle is 2.5 °, uses alternating current and welding current is 1230~1270A, and weldingvoltage is 47~51V, welding
330~354mm/min of speed；Each layer can be made up of a welding bead or several welding beads mutually taken side by side, each welding bead weldering
Welding slag and surface splash should be cleared up after the completion of connecing in time, when finding the defect of influence welding quality, can be welded again after should removing；
The throat depth that final welding completes steel plate is 28~32mm；
During the welding of three FCB methods, welding head is adjusted to the drawing on arc-extinguishing plate of one end, and welding head is directed at groove
10 or 10 ' center, that is, be directed at Weld pipe mill position；Further adjust first electrode, second electrode and the 3rd electrode
Position relationship；Select suitable welding conditions, including current parameters, voltage parameter, selection welding wire specification and speed of welding；So
After start welding, first start first electrode and second electrode and synchronize welding, first electrode and the second electrode shape in weld seam
Into a welding pool, when the 3rd electrode reaches first electrode, the striking position of second electrode, start the 3rd electrode and welded
Connect, the 3rd electrode forms independent welding pool；Before welding terminates, first electrode and second electrode are soldered to drawing for the other end
Blow-out is carried out when in the middle part of arc-extinguishing plate, but welding head is moved on, until the 3rd electrode welding is to first electrode, second electrode
Blow-out is carried out during blow-out position, terminates welding operation；
Step 3, by two blocks of steel plates 1,1 ' turn-over, and the back side of two blocks of steel plates 1,1 ' to completed welding weld seam root
Portion is cleared up using carbon arc air gouging and polishing mode；
Step 4, is welded at the back side of steel plate using monofilament submerged arc welding method, and when steel billet temperature is less than 0 DEG C, steel plate is at least
It is preheating to 21 DEG C；When steel plate thickness is more than 20mm, steel plate is at least preheating to 10 DEG C；When steel plate thickness is more than 38mm, steel plate is at least
It is preheating to 65 DEG C；Broken welding wires are first laid in the root of weld, the thickness of broken welding wires is not less than 0.9 times of the thickness of steel plate and little
In the thickness of steel plate, bottoming welding, filling welding and cover welding are then carried out successively, using a diameter of 4mm reality during welding
Core welding wire, welding wire elongation is 15~45mm, and welding wire angle is 0~10 °；Number of weld passes is determined according to the thickness of steel plate, final weldering
Connect remaining throat depth for completing steel plate；It is five in the number of weld passes of the back side submerged-arc welding of steel plate when the thickness of steel plate is 49mm
One of road, wherein bottoming welding, filling welding twice, cover welding twice (see Fig. 3)；When carrying out bottoming welding, using direct current
Reversal connection and welding current are 650~740A, and weldingvoltage is 28~33V, and speed of welding is 360~430mm/min；It is filled
During welding, use DC reverse connection and welding current is 660~750A, weldingvoltage be 29~34V, speed of welding be 440~
540mm/min；When carrying out cover welding, use DC reverse connection and welding current is 680~760A, weldingvoltage is 30~35V,
Speed of welding is 390~480mm/min.
The welding method more than 38mmmm thickness hull plates of the present invention, using FCB welding methods and monofilament submerged arc welding method phase
With reference to welding method, realize that expansion of three FCB methods to ultra-thick steel plates is used, not only maintain FCB welding methods and monofilament submerged arc
The welding advantage of welding method, has obtained superior in quality weld seam, and avoid lack of penetration, burn-through, fill the defect such as discontented, moreover it is possible to big
It is big to improve welding efficiency, the energy can be saved again.
Above example is used for illustrative purposes only, rather than limitation of the present invention, about the technology people of technical field
Member, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all equivalent
Technical scheme should also belong to scope of the invention, should be limited by each claim.
Claims (6)
1. a kind of welding method more than 38mm thickness hull plates, is applicable EH36 with the splice joint of subordinate's steel plate；Its feature
It is, the welding method comprises the following steps：
Step one, by two pieces of steel plate docking and in docking port bevel cut, when the thickness of steel plate is less than 49mm, the groove is in
Y shape, and bevel angle is 39~45 °, and groove depth is 28~32mm, and root gap is 0~1mm, and pure side is 10~30mm；
When the thickness of steel plate is more than 49mm, the groove is in double Y shapes, and the angle of front groove is 39~45 °, front groove
Depth is 28~32mm, and pure side is 12~16mm, and root gap is 0~1mm, and the angle of underside groove is 85~100 °；
Step 2, in the front of steel plate using three FCB methods welding, first uniformly dispenses the pad of 4~6mm thickness on copper pad
The copper pad for laying pad solder flux, is then pressed at the docking port at the steel plate back side, makes itself and steel by solder flux with jack unit
Plate is brought into close contact, then the progress single-side multi-layer welding at the positive groove of steel plate, and the throat depth that final welding completes steel plate is
28~32mm；
Step 3, carbon arc air gouging and polishing are used by steel plate turn-over, and at the back side of steel plate to the root of weld for having completed welding
Mode is cleared up；
Step 4, is welded at the back side of steel plate using monofilament submerged arc welding method, broken welding wires is first laid in the root of weld, then
Bottoming welding, filling welding and cover welding are carried out successively, and number of weld passes is determined according to the thickness of steel plate, and final welding completes steel
Remaining throat depth of plate.
2. the welding method according to claim 1 more than 38mm thickness hull plates, it is characterised in that carry out described
When FCB methods are welded, layer is three, and using a diameter of 4.8mm solid core welding wire during first layer of welding, welding wire elongation is 25
~55mm, welding wire angle is -15 °, uses alternating current and welding current is 1410~1460A, and weldingvoltage is 32~34V, weldering
Meet 330~354mm/min of speed；Using a diameter of 4.8mm solid core welding wire when welding second layer, welding wire elongation for 25~
55mm, welding wire angle is 0 °, uses alternating current and welding current is 1230~1270A, and weldingvoltage is 41~45V, welding speed
Spend 330~354mm/min；Using a diameter of 6.4mm solid core welding wire when welding the 3rd layer, welding wire elongation for 25~
55mm, welding wire angle is 2.5 °, uses alternating current and welding current is 1230~1270A, and weldingvoltage is 47~51V, welding
330~354mm/min of speed.
3. the welding method according to claim 1 or 2 more than 38mm thickness hull plates, it is characterised in that carry out institute
State before the welding of FCB methods, in addition it is also necessary to which steel plate is preheated；When steel billet temperature is less than 0 DEG C, steel plate is preheated at least 21 DEG C；
When steel plate thickness is more than 20mm, steel plate is preheated at least 10 DEG C.
4. the welding method according to claim 1 more than 38mm thickness hull plates, it is characterised in that carry out the list
During silk submerged arc welding, using a diameter of 4mm solid core welding wire, welding wire elongation is 15~45mm, and welding wire angle is 0~10 °；Carry out
When bottoming is welded, use DC reverse connection and welding current is 650~740A, weldingvoltage is 28~33V, and speed of welding is 360
~430mm/min；When being filled welding, use DC reverse connection and welding current is 660~750A, weldingvoltage be 29~
34V, speed of welding is 440~540mm/min；When carrying out cover welding, use DC reverse connection and welding current for 680~
760A, weldingvoltage is 30~35V, and speed of welding is 390~480mm/min.
5. the welding method more than 38mm thickness hull plates according to claim 1 or 4, it is characterised in that carry out institute
State before the welding of monofilament submerged arc welding method, in addition it is also necessary to which steel plate is preheated；When steel billet temperature is less than 0 DEG C, steel plate is at least preheating to
21℃；When steel plate thickness is more than 20mm, steel plate is at least preheating to 10 DEG C；When steel plate thickness is more than 38mm, steel plate is at least preheating to
65℃。
6. the welding method according to claim 1 more than 38mm thickness hull plates, it is characterised in that carry out the list
During silk submerged arc welding, the thickness of the laying broken welding wires is not less than 0.9 times of the thickness of steel plate and the no more than thickness of steel plate.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746949A (en) * | 2018-08-02 | 2018-11-06 | 唐山开元特种焊接设备有限公司 | FCB splice joint equipment |
| CN109986230A (en) * | 2019-02-19 | 2019-07-09 | 江阴兴澄特种钢铁有限公司 | A kind of welding procedure of high Ti wear-resisting steel plate of the thickness greater than 25mm |
| 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 |
| CN110394533A (en) * | 2018-12-27 | 2019-11-01 | 中煤张家口煤矿机械有限责任公司 | A kind of automatic single face welding and double face shaping method of mariages |
| CN110465722A (en) * | 2019-08-29 | 2019-11-19 | 广船国际有限公司 | A method of passing through FCB welding Y type groove plate |
| CN110640277A (en) * | 2019-09-30 | 2020-01-03 | 广州黄船海洋工程有限公司 | Q420 high-strength steel thick plate non-preheating double-wire submerged-arc welding process |
| CN110640278A (en) * | 2019-09-30 | 2020-01-03 | 广州黄船海洋工程有限公司 | Terminal crack prevention process for Q420 high-strength steel flux copper liner method submerged-arc welding |
| CN112059364A (en) * | 2020-09-03 | 2020-12-11 | 海洋石油工程（青岛）有限公司 | Process method for submerged arc welding of ship plate butt joint with plane arc-shaped welding line |
| CN113305404A (en) * | 2021-05-31 | 2021-08-27 | 二十二冶集团装备制造有限公司 | Single-wire submerged-arc welding process for 30-50mm thick steel plate |
| CN114346382A (en) * | 2021-12-13 | 2022-04-15 | 上海江南长兴造船有限责任公司 | Single-wire and double-wire combined submerged arc automatic welding method |
| CN114682886A (en) * | 2022-04-28 | 2022-07-01 | 河南鼎力杆塔股份有限公司 | Welding method for angle iron tower steel cladding |
| CN114799429A (en) * | 2022-04-15 | 2022-07-29 | 江南造船(集团)有限责任公司 | High-deposition-rate submerged arc automatic welding method for high-strength steel thick plate |
| CN115464241A (en) * | 2022-08-31 | 2022-12-13 | 中船黄埔文冲船舶有限公司 | Welding method for medium plate |
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