CN105195858B - A kind of steel for ship structure straight angle connects welding method - Google Patents
A kind of steel for ship structure straight angle connects welding method Download PDFInfo
- Publication number
- CN105195858B CN105195858B CN201510708325.XA CN201510708325A CN105195858B CN 105195858 B CN105195858 B CN 105195858B CN 201510708325 A CN201510708325 A CN 201510708325A CN 105195858 B CN105195858 B CN 105195858B
- Authority
- CN
- China
- Prior art keywords
- welding
- steel
- groove
- ship structure
- straight angle
- 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.)
- Active
Links
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
-
- 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
- B23K9/095—Monitoring or automatic control of welding parameters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
A kind of steel for ship structure straight angle connects welding method, belongs to the welding method of steel for ship structure, solves the problem of existing steel for ship structure straight angle connects that weld strength present in welding method is low, is unfavorable for mother metal anti-corrosion.The present invention includes forming groove step, preheating step, positive welding step, face bonding post-processing step, back gouging step, back side welding step and back side after welding treatment step.The present invention is easy to process, effectively reduce welding deformation, smoothly realizing the steel for ship structure straight angle connects welding, 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 the domestic steel for ship structure straight angle connects welding.
Description
Technical field
The invention belongs to the welding method of steel for ship structure, and in particular to a kind of steel for ship structure straight angle meets welding side
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.Therefore, welding technique progress is highly important to promoting the development of shipbuilding production to have
Meaning.In the world, high strength steel welding technique develops comparatively fast in terms of wlding composition and technological design, and application field is also continuous
Expand.Manufacture of steel structure field in the case where being related to Special use requirement and bad working environments condition (such as radiation parameter), high strength steel
Occupy more and more important position, have been widely used the neck such as ship, bridge, petrochemical industry, Construction of highrise buildings, construction of nuclear power station
Domain.And it is domestic, the application of high-strength steel is also gradually expanding, but it is generally also immature, only account for 10% or so of steel consumption,
Ratio is smaller.At present, the intensity of high-strength steel is 300MPa, the welding standard of high strength steel in standard GB/T 1499.2-2007
It is not perfect, the design studies Shortcomings of associated welds technique.
Existing high-strength structure connects welding method with the steel straight angle and mainly uses manual electric arc welding, to ensure welding quality, subtracts
The generation of the great weld defects such as few cold crack, the general austenitic stainless steel wlding relatively low using intensity；But, using intensity
Relatively low austenitic stainless steel wlding, weld strength is less than mother metal, and weld strength do not meet design requirement, for contact with sea water
Structure, potential difference can be produced between weld seam and mother metal, is unfavorable for the anti-corrosion of mother metal.
For ease of understanding the present invention, relevant term is explained below：
When the progress straight angle connects welding, a steel part is welded in another steel piece surface not moved, the steel not moved
Part is referred to as basic part, and mobile steel part is referred to as workpiece, and generally groove is opened on workpiece, and workpiece presses certain angle with basic part
Corner connection.
The straight angle connects welding and refers to that basic part and workpiece general horizontal are placed in parallel, thickness of workpiece direction side and basic part table
Weld at an angle in face.
The vertical toe of weld of weld seam highly refers to height of the weld seam relative to basic part surface, and the horizontal toe of weld of weld seam highly refers to weldering
Stitch the height relative to workpiece surface.
The content of the invention
The present invention provides a kind of steel for ship structure straight angle and connects welding method, solves the existing flat fillet welding of steel for ship structure
The problem of connecing that the weld strength present in method is low, be unfavorable for mother metal anti-corrosion, to save more welding material, electric energy and work
When, and it is easy to process, effectively reduce welding deformation.
A kind of steel for ship structure straight angle provided by the present invention connects welding method, comprises the steps：
(1) groove step is formed：Single V-arrangement bevel groove is formed in corner of workpiece socket part position to be welded, root δ/3 ± 2mm is stayed,
Wherein workpiece thickness of slab δ >=30mm, bevel groove is 50 °~55 ° relative to basic part surface angle；
(2) preheating step：By workpiece to be welded and basic part corner connection, single V-arrangement corner connection groove, corner connection bevel angle are constituted
For 50 °~55 °, corner connection groove gap 0mm~1mm；Then preheated in the range of diametrical connection groove and its both sides 150mm, in advance
Hot temperature reaches 100 DEG C~130 DEG C beginning weldings；
(3) positive welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the bevel groove at corner connection position, welding
Material uses the welding rod matched with basic part yield strength；During welding between road temperature control at 100 DEG C~130 DEG C；
(4) face bonding post-processing step：Judge whether environment temperature for 5 DEG C~30 DEG C and relative humidity is less than 70%, be
(5) are then gone to step, otherwise will be heated in the range of weld seam and weld seam both sides 150mm, heating-up temperature reaches 200 DEG C~250 DEG C, insulation
2 hours or more, then it is allowed to be slowly cooled to room temperature using sheet asbestos covering weldment, then carry out step (5)；
(5) back gouging step：Back chipping is first dug to weld seam backside gas using φ 10mm carbon-points, circular arc groove is formed；So
Afterwards to being preheated in the range of circular arc groove and its both sides 150mm, preheating temperature reaches 100 DEG C~130 DEG C, carries out step
(6)；
(6) back side welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the circular arc groove at corner connection position, weldering
Connect material and use the welding rod matched with basic part yield strength；During welding between road temperature control at 100 DEG C~130 DEG C；
(7) back side after welding treatment step：Judge whether environment temperature for 5 DEG C~30 DEG C and relative humidity is less than 70%, be
Then terminate；Otherwise it will be heated in the range of weld seam and weld seam both sides 150mm, heating-up temperature reaches 200 DEG C~250 DEG C, is incubated 2 hours
Or more, then it is allowed to be slowly cooled to room temperature using sheet asbestos covering weldment, terminates.
The described steel for ship structure straight angle connects welding method, it is characterised in that：
In the front welding and back side welding step, using φ 4.0mm welding rods, welding current 165A~175A, electric arc
Voltage 23V~25V, speed of welding 10cm/min~18cm/min.
The described steel for ship structure straight angle connects welding method, it is characterised in that：
In the front welding and back side 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.
The present invention is welded in front welding and back side welding step using with the ferrite that high-strength structure is matched with steel
Material, it is ensured that the intensity of weld seam is not less than mother metal；The hydrogen induced cracking that weld preheating is likely to occur with eliminating, due to single track during welding
Weld seam can not fill up the groove in section, therefore use multi-pass welding to fill up the groove in section, with prevent weld cracking and
The generation of delayed crack, 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, beneficial to ensure welding quality；When environmental condition does not reach requirement, lead to
Post weld heat treatment is crossed, the cold crack that steel for ship structure weld seam is likely to occur is eliminated.
The present invention is easy to process, effectively reduces welding deformation, smoothly realizes the steel for ship structure straight angle and connect welding, pass through
Weldability test, qualification of welding procedure, can raise labour efficiency, save welding material, electric energy and man-hour, reduction is produced into
Originally ship building period, is reduced, the blank that the domestic steel for ship structure straight angle connects welding has been filled up.
Brief description of the drawings
Fig. 1 is workpiece front welding groove ruler degree side view；
Fig. 2 (A) is workpiece front welding sequence of side views；
Fig. 2 (B) is back of work welding groove and welding sequence side view.
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, forming single V-arrangement at thickness 30mm special 902 steel workpiece corner connection position
Bevel groove, stays root 10mm, and bevel groove is 55 ° relative to basic part surface angle；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) preheating step：By workpiece to be welded and 980 thick steel basic part corner connections of 30mm, single V-arrangement corner connection slope is constituted
Mouthful, corner connection bevel angle is 55 °, corner connection groove gap 0mm~1mm；Then enter in the range of diametrical connection groove and its both sides 150mm
Row preheating, preheating temperature reaches 130 DEG C of beginning weldings；
(3) positive welding step：As shown in Fig. 2 (A), using 5 layer of 8 road manual electric arc welding, to fill up the oblique of corner connection position
Face groove, welding material uses the φ 4.0mmCHE58-1HR welding rods matched with basic part yield strength；Welding current
165A~175A, arc voltage 23V~25V, speed of welding 10cm/min~18cm/min, temperature control exists between road during welding
130℃；The vertical toe of weld of weld seam is highly 28mm~31mm, and the horizontal toe of weld of weld seam is highly 8mm~10mm；
(4) face bonding post-processing step：Judge whether environment temperature for 5 DEG C~30 DEG C and relative humidity is less than 70%, be
(5) are then gone to step, otherwise will be heated in the range of weld seam and weld seam both sides 150mm, heating-up temperature reaches 200 DEG C, and insulation 2.5 is small
When, then it is allowed to be slowly cooled to room temperature using sheet asbestos covering weldment, then carry out step (5)；
(5) back gouging step：As shown in Fig. 2 (B), back chipping is first dug to weld seam backside gas using φ 10mm carbon-points, formed
Circular arc groove；Then to being preheated in the range of circular arc groove and its both sides 150mm, preheating temperature reaches 130 DEG C, progress
Step (6)；
(6) back side welding step：As shown in Fig. 2 (B), using 5 layer of 8 road manual electric arc welding, to fill up the circle at corner connection position
Arc groove, welding material uses the φ 4.0mmCHE58-1HR welding rods matched with basic part yield strength；Welding current
165A~175A, arc voltage 23V~25V, speed of welding 10cm/min~18cm/min, temperature control exists between road during welding
130℃；The vertical toe of weld of weld seam is highly 28mm~31mm, and the horizontal toe of weld of weld seam is highly 8mm~10mm；
(7) back side after welding treatment step：Judge whether environment temperature for 5 DEG C~30 DEG C and relative humidity is less than 70%, be
Then terminate；Otherwise it will be heated in the range of weld seam and weld seam both sides 150mm, heating-up temperature reaches 200 DEG C, is incubated 2.5 hours, then
It is allowed to be slowly cooled to room temperature using sheet asbestos covering weldment, terminates.
Embodiment 2, it is identical the step of with embodiment 1, differ only in the technological parameter in each step：
Formed in groove step, stay root 12mm, bevel groove angle is 50 °；
In preheating step, corner connection bevel angle is 50 °, and corner connection groove gap 0mm~1mm, preheating temperature reaches that 100 DEG C are opened
Beginning welding；
In positive welding step, during welding between road temperature control at 100 DEG C.
In face bonding post-processing step, heating-up temperature reaches 250 DEG C, is incubated 2 hours；
In back gouging step, preheating temperature reaches 100 DEG C；
In the welding step of the back side, during welding between road temperature control at 100 DEG C；
In back side after welding treatment step, heating-up temperature reaches 250 DEG C, is incubated 2 hours.
In the positive welding step and back side welding step of the various embodiments described above, needed before involved welding electrode through 380~
400 DEG C bakee 1~2 hour, are 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, weight
The number of times newly bakeed 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 (3)
1. a kind of steel for ship structure straight angle connects welding method, it is characterised in that comprise the steps：
(1) groove step is formed：Single V-arrangement bevel groove is formed in corner of workpiece socket part position to be welded, root δ/3 ± 2mm is stayed, wherein
Workpiece thickness of slab δ >=30mm, bevel groove is 50 °~55 ° relative to basic part surface angle；
(2) preheating step：By workpiece to be welded and basic part corner connection, single V-arrangement corner connection groove is constituted, corner connection bevel angle is
50 °~55 °, corner connection groove gap 0mm~1mm；Then preheated, preheated in the range of diametrical connection groove and its both sides 150mm
Temperature reaches 100 DEG C~130 DEG C beginning weldings；
(3) positive welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the bevel groove at corner connection position, welding material
Using the welding rod matched with basic part yield strength；During welding between road temperature control at 100 DEG C~130 DEG C；
(4) face bonding post-processing step：Judge whether environment temperature for 5 DEG C~30 DEG C and relative humidity is less than 70%, be to turn
Step (5), otherwise will be heated, heating-up temperature reaches 200 DEG C~250 DEG C, and insulation 2 is small in the range of weld seam and weld seam both sides 150mm
When or more, then it is allowed to be slowly cooled to room temperature using sheet asbestos covering weldment, then carry out step (5)；
(5) back gouging step：Back chipping is first dug to weld seam backside gas using φ 10mm carbon-points, circular arc groove is formed；Then it is right
Preheated in the range of circular arc groove and its both sides 150mm, preheating temperature reaches 100 DEG C~130 DEG C, carry out step (6)；
(6) back side welding step：Using multilayer multiple tracks manual electric arc welding, to fill up the circular arc groove at corner connection position, material is welded
Material is using the welding rod matched with basic part yield strength；During welding between road temperature control at 100 DEG C~130 DEG C；
(7) back side after welding treatment step：Judge whether environment temperature for 5 DEG C~30 DEG C and relative humidity is less than 70%, be to tie
Beam；Otherwise will be heated in the range of weld seam and weld seam both sides 150mm, heating-up temperature reaches 200 DEG C~250 DEG C, insulation 2 hours or with
On, then it is allowed to be slowly cooled to room temperature using sheet asbestos covering weldment, terminates.
2. the steel for ship structure straight angle as claimed in claim 1 connects welding method, it is characterised in that：
In the front welding and back side welding step, using φ 4.0mm welding rods, welding current 165A~175A, arc voltage
23V~25V, speed of welding 10cm/min~18cm/min.
3. the steel for ship structure straight angle as claimed in claim 1 or 2 connects welding method, it is characterised in that：
In the front welding and back side 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708325.XA CN105195858B (en) | 2015-10-27 | 2015-10-27 | A kind of steel for ship structure straight angle connects welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708325.XA CN105195858B (en) | 2015-10-27 | 2015-10-27 | A kind of steel for ship structure straight angle connects welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105195858A CN105195858A (en) | 2015-12-30 |
| CN105195858B true CN105195858B (en) | 2017-10-27 |
Family
ID=54943992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510708325.XA Active CN105195858B (en) | 2015-10-27 | 2015-10-27 | A kind of steel for ship structure straight angle connects welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105195858B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195873A (en) * | 2015-10-27 | 2015-12-30 | 武昌船舶重工集团有限公司 | Vertical-angle-joint welding method for hull structural steel |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665896A (en) * | 2016-03-15 | 2016-06-15 | 广船国际有限公司 | Welding method of transverse position angle joint |
| CN106363281B (en) * | 2016-08-30 | 2018-11-27 | 鞍钢建设集团有限公司 | A kind of welding method of building structural steel Q390GJC |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005014001A (en) * | 2003-06-23 | 2005-01-20 | Shin Kurushima Dockyard Co Ltd | Welding method for corrugated partition corner part |
| CN102009257A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Process for welding high-strength hull structural steel by fillet welding in vertical position |
| CN102009255A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Downward and butt welding process 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 |
| CN104014914A (en) * | 2014-06-04 | 2014-09-03 | 浙江省海洋开发研究院 | Welding method for high-strength steel in hull structure |
-
2015
- 2015-10-27 CN CN201510708325.XA patent/CN105195858B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005014001A (en) * | 2003-06-23 | 2005-01-20 | Shin Kurushima Dockyard Co Ltd | Welding method for corrugated partition corner part |
| 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 |
| CN102009257A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Process for welding high-strength hull structural steel by fillet welding in vertical position |
| CN102009255A (en) * | 2010-12-01 | 2011-04-13 | 武昌船舶重工有限责任公司 | Downward and butt welding process for high strength steel for ship structure |
| CN104014914A (en) * | 2014-06-04 | 2014-09-03 | 浙江省海洋开发研究院 | Welding method for high-strength steel in hull structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195873A (en) * | 2015-10-27 | 2015-12-30 | 武昌船舶重工集团有限公司 | Vertical-angle-joint welding method for hull structural steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105195858A (en) | 2015-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103317218B (en) | Double-sided dual-narrow-gap non-back-gouging welding method for large thick plates | |
| CN102019481B (en) | Plain butt welding process for high-strength hull structural steel | |
| CN103801808B (en) | Narrow clearance melting electrode metal active gas arc welding technique | |
| CN102009255B (en) | Downward and butt welding process for high strength steel for ship structure | |
| CN102029457B (en) | Vertical butt welding process of high-strength steel for ship structures | |
| CN103862184B (en) | 1000MPa high strength steel preheating-free combined welding method | |
| CN102101210A (en) | Welding method of high-strength steel for pressure steel pipe of 610MPa hydropower station | |
| CN102009252A (en) | Vertical position welding process method of steel for high-strength hull structure | |
| CN104139228A (en) | Thick steel plate welding process | |
| CN105234525B (en) | A kind of hull structural steel founds butt welding method with forged steel | |
| CN105195858B (en) | A kind of steel for ship structure straight angle connects welding method | |
| CN105252108B (en) | A kind of flat elevation angle of steel for ship structure connects welding method | |
| CN106695080A (en) | Welding method for plates for ships and marine engineering | |
| CN105195873B (en) | A kind of steel for ship structure founds corner connection welding method | |
| CN102489889B (en) | Welding method for shipbuilding building | |
| CN104959703A (en) | Welding method and application of maritime work high-strength steel plates | |
| CN105127558A (en) | Method for hybrid welding of high-strength bridge steel K type joint | |
| CN105312742A (en) | Welding technology | |
| CN101559549A (en) | Process method for rewelding of high strength steel | |
| CN206474820U (en) | The narrow gap welding groove of sheet material | |
| CN102009257B (en) | Process for welding high-strength hull structural steel by fillet welding in vertical position | |
| CN105195861B (en) | A kind of hull structural steel faces upward butt welding method with forged steel | |
| CN105195857B (en) | A kind of hull structural steel and the flat butt welding method of forged steel | |
| CN105195856B (en) | A kind of steel for ship structure and the horizontal butt welding method of forged steel | |
| CN102029458B (en) | Butt welding technique of steel crossbar for high-strength ship body structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |