CN105195856B - A kind of steel for ship structure and the horizontal butt welding method of forged steel - Google Patents
A kind of steel for ship structure and the horizontal butt welding method of forged steel Download PDFInfo
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- CN105195856B CN105195856B CN201510707909.5A CN201510707909A CN105195856B CN 105195856 B CN105195856 B CN 105195856B CN 201510707909 A CN201510707909 A CN 201510707909A CN 105195856 B CN105195856 B CN 105195856B
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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
-
- 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A kind of hull structural steel and the horizontal butt welding method of forged steel, the welding method belonged between high strength steel material solve the problem of existing high-strength structure steel and weld strength present in the horizontal butt welding method of high strength forgings are 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 the horizontal butt welding of 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, fill up the blank that domestic ship structural steel is welded 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 steel for ship structure is horizontal with forged steel
Butt 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, the existing horizontal butt welding method of high-strength structure steel and high strength forgings mainly uses 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 the horizontal butt welding method of forged steel, solves existing high-strength structure steel
With the problem of weld strength present in the horizontal butt welding method of high strength forgings is low, welding job amount is larger, it is special for mother metal
With 902 steel and the horizontal butt welding of SA508-3 forged steel, to save welding material, electric energy and man-hour, and it is easy to process, effectively reduce weldering
Connect deformation.
A kind of steel for ship structure provided by the present invention and the horizontal butt welding method of 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,
Special 902 steel side slope mouthful angle of inclination is bigger 20 ° than SA508-3 forged steel side slope mouthful angle of inclination~and 30 °, list is collectively formed during docking
V-arrangement butting grooves, butting grooves angle is 55 °~60 °, and the part that special 902 steel side is thicker than SA508-3 forged steel is cut tiltedly, is made
Obtain butting grooves both sides 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 55 °~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 and the horizontal butt welding method of forged steel, it is characterised in that：
In the unilateral built-up welding step, welding current 150A~160A, arc voltage 24V~26V, speed of welding 14cm/
Min~20cm/min.
Described steel for ship structure and the horizontal butt welding method of 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 130A
~140A, arc voltage 22V~24V, speed of welding 12cm/min~17cm/min；
Other layers of backing welding and capping layer weldering use φ 4.0mmCHE58-1HR welding rods, welding current 150A~160A, electricity
Arc voltage 24V~26V, speed of welding 14cm/min~20cm/min.
Described steel for ship structure and the horizontal butt welding method of forged steel, it is characterised in that：
In the unilateral built-up welding step and welding step, need to bakee 1~2 through 380 DEG C~400 DEG C before involved welding electrode
Hour, 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, the number of times bakeed again
No more than 2 times.
Steel for ship structure with forged steel is horizontal dock when, weld seam molten bath molten iron is influenceed by gravity can by special 902 steel side
Trickle and accumulate to SA508-3 forged steel side, therefore horizontal butting grooves use asymmetric groove, special 902 steel side groove is tilted
Angle is bigger than SA508-3 forged steel side, to ensure that weld seam molten bath molten iron is uniform.Because the intensity of SA508-3 forged steel is higher than special
902 steel, SA508-3 forged steel side easily produces cold crack after the directly welding of two kinds of steel, so the present invention is in unilateral built-up welding step
It is middle that changeover portion is formed in the built-up welding of SA508-3 forged steel grooves using the CHE58-1HR welding rod strong with special 902 steel etc., so as to ensure
The welding of SA508-3 forged steel and special 902 steel, it is to avoid the generation of cold crack, 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, with
The effect of manual electric arc welding single face welding and double face shaping is reached, so as to reduce welding job amount；In welding step, due to single-run welding
The groove that can not be filled up in section is stitched, therefore uses multi-pass welding to fill up the groove in section, to prevent weld cracking and prolong
The generation of slow crackle, meanwhile, preceding one of weld seam is rear one of weld seam " preheating " process, and rear one of weld seam is preceding one of weld seam
" annealing " process, can effectively eliminate welding stress, and beneficial to welding quality is ensured, welding groove and welding condition are to welding
Quality has a great impact.
The present invention is easy to process, effectively reduces welding deformation, smoothly realizes special 902 steel horizontal right with 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, special 902 steel side slope mouthful angle of inclination is than SA508-3 forged steel side slope mouthful inclination angle
Spend big 30 °, collectively form single V-arrangement butting grooves during docking, butting grooves angle is 60 °, and special 902 steel side is thicker than SA508-
The part of 3 forged steel is cut tiltedly, cuts plagioclase degree 50mm so that butting grooves both sides are contour；In groove and in each 50mm in groove both sides
End face should remove the influential debris of the welding qualities such as water stain, greasy dirt, iron rust, dross；
(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 150A~160A, arc voltage 24V~26V, speed of welding 14cm/min~20cm/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 60 °, 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 130A~
140A, arc voltage 22V~24V, speed of welding 12cm/min~17cm/min；
3rd~10 layer of backing welding and the 11st, 12,13 layers of capping layer weldering use φ 4.0mmCHE58-1HR welding rods, welding electricity
Flow 150A~160A, arc voltage 24V~26V, speed of welding 14cm/min~20cm/min；32~35mm of weld width, weldering
Stitch 3~4mm of reinforcement.
Embodiment 2, it is identical the step of with embodiment 1, differ only in the technological parameter in each step：
Formed in groove step, special 902 steel side slope mouthful angle of inclination is bigger than SA508-3 forged steel side slope mouthful angle of inclination
20 °, butting grooves angle is 55 °, 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 55 °, 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.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent substitution, without departing from the spirit of technical scheme
And scope, it all should cover among scope of the presently claimed invention.
Claims (2)
1. a kind of steel for ship structure and the horizontal butt welding method of 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 is not stayed, it is special
902 steel side slopes mouthful angles of inclination are bigger 20 ° than SA508-3 forged steel side slope mouthful angle of inclination~and 30 °, single V-arrangement is collectively formed during docking
Butting grooves, butting grooves angle is 55 °~60 °, and the part that special 902 steel side is thicker than SA508-3 forged steel is cut tiltedly so that right
Connect groove both sides 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 55 °~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 150A~160A, arc voltage 24V~26V, speed of welding 14cm/min~
20cm/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 130A~
140A, arc voltage 22V~24V, speed of welding 12cm/min~17cm/min；
Other layers of backing welding and capping layer weldering use φ 4.0mmCHE58-1HR welding rods, welding current 150A~160A, electric arc electricity
Press 24V~26V, speed of welding 14cm/min~20cm/min.
2. steel for ship structure as claimed in claim 1 and the horizontal butt welding method of 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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| CN201510707909.5A CN105195856B (en) | 2015-10-27 | 2015-10-27 | A kind of steel for ship structure and the horizontal butt welding method of forged steel |
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| CN105195856A CN105195856A (en) | 2015-12-30 |
| CN105195856B true CN105195856B (en) | 2017-09-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114888404A (en) * | 2022-06-24 | 2022-08-12 | 广船国际有限公司 | Assembling and welding method for ship rocker arm and rotating shaft |
| 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 |
| CN116079188B (en) * | 2023-03-09 | 2024-07-26 | 中铁宝桥集团有限公司 | Welding method for large-section butt-joint groove of inclined steel tower section |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001416A (en) * | 2001-06-18 | 2003-01-08 | Kawasaki Steel Corp | BUILD-UP WELDING METHOD FOR 13Cr-BASE ALLOY |
| CN101890562A (en) * | 2010-07-26 | 2010-11-24 | 上海电气核电设备有限公司 | Nuclear island primary device connection tube safe end dissimilar metal welding technology |
| CN102009253A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Transverse welding technical method for high-strength steel for ship structure |
| CN102019481A (en) * | 2010-11-30 | 2011-04-20 | 武昌船舶重工有限责任公司 | Plain butt welding process for high-strength hull structural steel |
| CN102581428A (en) * | 2012-02-22 | 2012-07-18 | 象王重工股份有限公司 | Ultra-thick forge piece and thin plate butt welding process |
| CN102773581A (en) * | 2012-08-10 | 2012-11-14 | 安徽应流机电股份有限公司 | Welding process of pearlite heat-resistant steel and ordinary carbon steel |
-
2015
- 2015-10-27 CN CN201510707909.5A patent/CN105195856B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001416A (en) * | 2001-06-18 | 2003-01-08 | Kawasaki Steel Corp | BUILD-UP WELDING METHOD FOR 13Cr-BASE ALLOY |
| CN101890562A (en) * | 2010-07-26 | 2010-11-24 | 上海电气核电设备有限公司 | Nuclear island primary device connection tube safe end dissimilar metal welding technology |
| CN102019481A (en) * | 2010-11-30 | 2011-04-20 | 武昌船舶重工有限责任公司 | Plain butt welding process for high-strength hull structural steel |
| CN102009253A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Transverse welding technical method for high-strength steel for ship structure |
| CN102581428A (en) * | 2012-02-22 | 2012-07-18 | 象王重工股份有限公司 | Ultra-thick forge piece and thin plate butt welding process |
| CN102773581A (en) * | 2012-08-10 | 2012-11-14 | 安徽应流机电股份有限公司 | Welding process of pearlite heat-resistant steel and ordinary carbon steel |
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