CN105234525B - A kind of hull structural steel founds butt welding method with forged steel - Google Patents
A kind of hull structural steel founds butt welding method with forged steel Download PDFInfo
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- CN105234525B CN105234525B CN201510706377.3A CN201510706377A CN105234525B CN 105234525 B CN105234525 B CN 105234525B CN 201510706377 A CN201510706377 A CN 201510706377A CN 105234525 B CN105234525 B CN 105234525B
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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
-
- 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/042—Built-up welding on planar surfaces
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
A kind of hull structural steel is with the vertical butt welding method of forged steel, the welding method belonged between high strength steel material, the problem of weld strength present in the existing high-tensile structural steel of solution and the vertical butt welding method of forged steel is low, welding job amount is larger.The present invention includes forming groove step, unilateral built-up welding step, preheating step and welding step.The present invention is easy to process, effectively reduce welding deformation, smoothly realize special 902 steel and stand butt welding with the forged steel of SA508 3, weldability test, qualification of welding procedure are passed through, it can raise labour efficiency, save welding material, electric energy and man-hour, reduce production cost, reduce ship building period, filled up domestic ship structural steel and found butt-welded blank with high strength forgings.
Description
Technical field
The invention belongs to the welding method between high strength steel material, and in particular to a kind of hull structural steel and vertical pair of forged steel
Connect welding method.
Background technology
Welding technique is one of key process technology that modern ships build engineering, the Ship Welding quality in hull construction
It is the important indicator for evaluating shipbuilding quality.Steel knot in the case where being related to Special use requirement and bad working environments condition (such as radiation parameter)
Field is made in structure, and high strength steel occupies more and more important position, has been widely used ship, bridge, petrochemical industry, skyscraper
The fields such as construction, the construction of nuclear power station.In the world, high strength steel welding technique develop in terms of wlding composition and technological design compared with
It hurry up, application field is also constantly expanding.The application of domestic high strength steel is also gradually expanding, but generally also immature,
10% or so of steel consumption is only accounted for, ratio is smaller.At present, the intensity of high strength steel is in standard GB/T 1499.2-2007
400Mpa；Existing high-strength structure steel and high strength forgings found butt welding method and mainly use manual electric arc welding, to ensure
Welding quality, the general austenitic stainless steel wlding relatively low using intensity, one side bevel, back root cleaning；But, using intensity
Relatively low austenitic stainless steel wlding, weld strength is less than mother metal, and weld strength does not meet design requirement, it is necessary to the two of mother metal
Face is required for welding, and the workload of welding is larger.
The content of the invention
The present invention provides a kind of steel for ship structure and founds butt welding method with forged steel, solve existing high-tensile structural steel with
Forged steel stands the problem of weld strength present in butt welding method is low, welding job amount is larger, for special 902 steel of mother metal with
SA508-3 forged steel stands butt welding, to save welding material, electric energy and man-hour, and easy to process, effectively reduces welding deformation.
A kind of steel for ship structure provided by the present invention founds butt welding method with forged steel, it is characterised in that including under
State step：
(1) groove step is formed：Groove is formed in special 902 steel and SA508-3 forged steel docking site respectively, root is not stayed,
Both sides groove angle of inclination is symmetrical, single V-arrangement butting grooves is collectively formed during docking, butting grooves angle is 50 °~60 °, special
Cut tiltedly the part that 902 steel sides are thicker than SA508-3 forged steel so that butting grooves both sides are contour；
(2) unilateral built-up welding step：SA508-3 forged steel grooves region is preheated to 80 DEG C~120 DEG C, then using manual arc
Weldering and φ 4mm CHE58-1HR welding rods carry out built-up welding on SA508-3 forged steel grooves, and overlay cladding profile is consistent with groove, thickness
For 30mm ± 2mm；The CHE58-1HR welding rods and special 902 steel yield strength ad eundem；
(3) preheating step：Special 902 steel and the docking of SA508-3 forged steel docking site both sides groove are collectively formed into single V-arrangement
Butting grooves, butting grooves groove gap 6mm ± 2mm, butting grooves angle is 50 °~60 °, and the groove back side is provided with thickness
4mm~6mm Q345R steel sleeves；Then to being preheated in the range of weld seam and weld seam both sides 150mm, preheating temperature reaches 80
~120 DEG C of beginning weldings；
(4) welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the groove in interface, welding material is used
CHE58-1HR welding rods；During welding between road temperature control at 80 DEG C~120 DEG C.
Described steel for ship structure founds butt welding method with forged steel, it is characterised in that：
In the unilateral built-up welding step, welding current 130A~140A, arc voltage 20V~22V, speed of welding 8cm/
Min~18cm/min.
Described steel for ship structure founds butt welding method with forged steel, it is characterised in that：
In the welding step, the 1st layer, the 2nd layer of backing welding use φ 3.2mmCHE58-1HR welding rods, welding current 110A
~130A, arc voltage 20V~22V, speed of welding 8cm/min~15cm/min；
Other layers of backing welding and capping layer weldering use φ 4.0mmCHE58-1HR welding rods, welding current 130A~140A, electricity
Arc voltage 20V~22V, speed of welding 8cm/min~18cm/min.
Described steel for ship structure founds butt welding method with forged steel, it is characterised in that：
In the unilateral built-up welding step and welding step, needed before involved welding electrode small through 380~400 DEG C of bakings 1~2
When, ready access upon use in heat-preserving container is put into, the welding rod being not used after 4 hours should take out and bakee again, and the number of times bakeed again is not
More than 2 times.
Because the intensity of SA508-3 forged steel is higher than special 902 steel, SA508-3 forged steel side holds after two kinds of steel are directly welded
Cold crack is also easy to produce, so the present invention is existed in unilateral built-up welding step using the CHE58-1HR welding rods strong with special 902 steel etc.
The built-up welding of SA508-3 forged steel grooves forms changeover portion, so as to ensure the welding of SA508-3 forged steel and special 902 steel, it is to avoid cold cracking
The generation of line, in turn ensure that the intensity of weld seam is not less than mother metal；In preheating step, weld preheating is carried out to eliminate hydrogen induced cracking,
Meanwhile, the method in groove bottom plus steel sleeve is employed, to reach the effect of manual electric arc welding single face welding and double face shaping, so that
Reduce welding job amount；In welding step, the groove that can not be filled up in section due to single-pass welding, therefore use multi-pass welding
To fill up the groove in section, to prevent the generation of weld cracking and delayed crack, meanwhile, preceding one of weld seam is rear one of weld seam
" preheating " process, rear one of weld seam is preceding one of weld seam " annealing " process, welding stress can be effectively eliminated, beneficial to guarantee
Welding quality, welding groove and welding condition welding quality have a great impact.
The present invention is easy to process, effectively reduces welding deformation, smoothly realizes special 902 steel and vertical pair of SA508-3 forged steel
Welding is connect, has passed through weldability test, qualification of welding procedure, can raise labour efficiency, save welding material, electric energy and work
When, reduction production cost, reduction ship building period have filled up the sky that domestic ship structural steel is welded with high strength forgings
In vain.
Brief description of the drawings
Fig. 1 is welding groove yardstick schematic diagram；
Fig. 2 is welding sequence schematic diagram in welding step.
Embodiment
Below in conjunction with drawings and examples, the present invention is further described.
Embodiment 1, comprises the steps：
(1) groove step is formed：As shown in figure 1, respectively in thickness 40mm special 902 steel and thickness 30mm SA508-
3 forged steel docking sites form groove, do not stay root, and both sides groove angle of inclination is symmetrical, and single V-arrangement docking slope is collectively formed during docking
Mouthful, butting grooves angle is 51 °, and the part that special 902 steel side is thicker than SA508-3 forged steel is cut tiltedly, cuts plagioclase degree 50mm so that
Butting grooves both sides are contour；End face in groove and in each 50mm in groove both sides should remove water stain, greasy dirt, iron rust, dross etc. pair
The influential debris of welding quality；
(2) unilateral built-up welding step：SA508-3 forged steel grooves region is preheated to 120 DEG C, then using manual electric arc welding and φ
4mm CHE58-1HR welding rods carry out built-up welding on SA508-3 forged steel grooves, and overlay cladding profile is consistent with groove, and thickness is 30mm
±2mm；The CHE58-1HR welding rods and special 902 steel yield strength ad eundem；
Welding current 130A~140A, arc voltage 20V~22V, speed of welding 8cm/min~18cm/min；
(3) preheating step：As shown in figure 1, special 902 steel and SA508-3 forged steel docking site both sides groove are docked altogether
With single V-arrangement butting grooves are constituted, butting grooves groove gap 8mm, butting grooves angle is 51 °, and the groove back side is provided with thickness
6mm Q345R steel sleeves；Then to being preheated in the range of weld seam and weld seam both sides 150mm, preheating temperature reaches that 120 DEG C are opened
Beginning welding；
(4) welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the groove in interface, welding material is used
CHE58-1HR welding rods；Temperature control is at 120 DEG C between road during welding, during welding, carries out temperature using infrared ray point thermometer at any time
Degree monitoring；
As shown in Fig. 2 the 1st layer, the 2nd layer of backing welding use φ 3.2mmCHE58-1HR welding rods, welding current 110A~
130A, arc voltage 20V~22V, speed of welding 8cm/min~15cm/min；
3rd~10 layer of backing welding and the 11st, 12 layers of capping layer weldering use φ 4.0mmCHE58-1HR welding rods, welding current
130A~140A, arc voltage 20V~22V, speed of welding 8cm/min~18cm/min；32~36mm of weld width, more than weld seam
High 1~2mm.
Embodiment 2, it is identical the step of with embodiment 1, differ only in the technological parameter in each step：
Formed in groove step, butting grooves angle is 60 °, cuts plagioclase degree 45mm；
In unilateral built-up welding step, 80 DEG C are preheated to；
Preheating step butting grooves groove gap 4mm, butting grooves angle is 60 °, is provided with thickness 4mm Q345R steel
Pad；Preheating temperature reaches 80 DEG C of beginning weldings；
In welding step, during welding between road temperature control at 80 DEG C.
In the unilateral built-up welding step and welding step of the various embodiments described above, needed before involved welding electrode through 380~400 DEG C
Bakee 1~2 hour, be put into ready access upon use in heat-preserving container, the welding rod being not used after 4 hours should take out and bakee again, dry again
The number of times of roasting is no more than 2 times.
Embodiments above is merely illustrative of the technical solution of the present invention and unrestricted, one of ordinary skill in the art
It should be appreciated that can be modified to technical scheme or equivalent substitution, without departing from technical scheme
Spirit and scope, it all should cover among scope of the presently claimed invention.
Claims (2)
1. a kind of steel for ship structure founds butt welding method with forged steel, comprise the steps：
(1) groove step is formed：Groove is formed in special 902 steel and SA508-3 forged steel docking site respectively, root, both sides is not stayed
Groove angle of inclination is symmetrical, and single V-arrangement butting grooves are collectively formed during docking, and butting grooves angle is 50 °~60 °, special 902 steel
Cut tiltedly the part that side is thicker than SA508-3 forged steel so that butting grooves both sides are contour；
(2) unilateral built-up welding step：SA508-3 forged steel grooves region is preheated to 80 DEG C~120 DEG C, then using manual electric arc welding and
φ 4mm CHE58-1HR welding rods carry out built-up welding on SA508-3 forged steel grooves, and overlay cladding profile is consistent with groove, and thickness is
30mm±2mm；The CHE58-1HR welding rods and special 902 steel yield strength ad eundem；
(3) preheating step：Special 902 steel and the docking of SA508-3 forged steel docking site both sides groove are collectively formed into single V-arrangement docking
Groove, butting grooves groove gap 6mm ± 2mm, butting grooves angle be 50 °~60 °, the groove back side be provided with thickness 4mm~
6mm Q345R steel sleeves；Then to being preheated in the range of weld seam and weld seam both sides 150mm, preheating temperature reaches 80~120
DEG C start welding；
(4) welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the groove in interface, welding material is used
CHE58-1HR welding rods；During welding between road temperature control at 80 DEG C~120 DEG C；
In the unilateral built-up welding step, welding current 130A~140A, arc voltage 20V~22V, speed of welding 8cm/min~
18cm/min；
It is characterized in that：
In the welding step, the 1st layer, the 2nd layer of backing welding use φ 3.2mmCHE58-1HR welding rods, welding current 110A~
130A, arc voltage 20V~22V, speed of welding 8cm/min~15cm/min；
Other layers of backing welding and capping layer weldering use φ 4.0mmCHE58-1HR welding rods, welding current 130A~140A, electric arc electricity
Press 20V~22V, speed of welding 8cm/min~18cm/min.
2. steel for ship structure as claimed in claim 1 founds butt welding method with forged steel, it is characterised in that：
In the unilateral built-up welding step and welding step, needed before involved welding electrode small through 380 DEG C~400 DEG C bakings 1~2
When, ready access upon use in heat-preserving container is put into, the welding rod being not used after 4 hours should take out and bakee again, and the number of times bakeed again is not
More than 2 times.
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| CN201510706377.3A CN105234525B (en) | 2015-10-27 | 2015-10-27 | A kind of hull structural steel founds butt welding method with forged steel |
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| CN201510706377.3A CN105234525B (en) | 2015-10-27 | 2015-10-27 | A kind of hull structural steel founds butt welding method with forged steel |
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| CN105234525B true CN105234525B (en) | 2017-09-29 |
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| CN106239055A (en) * | 2016-08-29 | 2016-12-21 | 东方电气集团东方锅炉股份有限公司 | The design of a kind of heavy wall dissimilar steel joint groove and processing method |
| CN111408909A (en) * | 2020-05-08 | 2020-07-14 | 安徽伟宏钢结构集团股份有限公司 | Production welding process for forged steel parts |
| CN111590164A (en) * | 2020-05-29 | 2020-08-28 | 广船国际有限公司 | Sheet vertical butt joint combined joint and welding method thereof |
| CN112372119B (en) * | 2020-12-02 | 2022-06-17 | 南京钢铁股份有限公司 | All-position manual arc welding process for 620MPa grade ultrahigh-strength ship steel |
| CN115255695B (en) * | 2022-07-26 | 2024-01-16 | 上海江南长兴造船有限责任公司 | Precision control method for reducing groove size loss of thick and thin plate jointed boards |
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| JP3579573B2 (en) * | 1997-09-30 | 2004-10-20 | 株式会社神戸製鋼所 | Single side welding method by carbon dioxide arc welding |
| CN101890562B (en) * | 2010-07-26 | 2012-05-23 | 上海电气核电设备有限公司 | Nuclear island primary device connection tube safe end dissimilar metal welding technology |
| CN101972878B (en) * | 2010-10-12 | 2012-08-22 | 中国化学工程第七建设有限公司 | Process for welding duplex stainless steel |
| CN102009255B (en) * | 2010-12-01 | 2013-06-19 | 武昌船舶重工有限责任公司 | Downward and butt welding process for high strength steel for ship structure |
| CN102009252A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Vertical position welding process method of steel for high-strength hull structure |
| CN102029457B (en) * | 2010-12-01 | 2012-10-03 | 武昌船舶重工有限责任公司 | Vertical butt welding process of high-strength steel for ship structures |
| CN103357993B (en) * | 2013-06-24 | 2015-10-21 | 兰州西固热电有限责任公司 | A kind of welding procedure of 12Cr1MoV and 12X18H12T dissimilar steel |
| CN103658940B (en) * | 2013-11-18 | 2016-02-10 | 哈尔滨电机厂有限责任公司 | The manufacturing process of large-scale water turbine stator |
| CN104801839B (en) * | 2015-04-01 | 2017-04-05 | 中石化工建设有限公司 | The welding procedure of austenitic stainless steel and chrome molybdenum heat resisting steel |
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