CN105127557A - Flux-cored gas shielded welding repair process for large and thick ocean engineering steel plate in low-temperature environment - Google Patents
Flux-cored gas shielded welding repair process for large and thick ocean engineering steel plate in low-temperature environment Download PDFInfo
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- CN105127557A CN105127557A CN201510604316.6A CN201510604316A CN105127557A CN 105127557 A CN105127557 A CN 105127557A CN 201510604316 A CN201510604316 A CN 201510604316A CN 105127557 A CN105127557 A CN 105127557A
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
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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
- B23K9/18—Submerged-arc welding
Abstract
The invention discloses a flux-cored gas shielded welding repair process for a large and thick ocean engineering steel plate in a low-temperature environment. The process includes the steps of selection of welding methods and welding materials and selection and control of welding process parameters in the welding process. Carbon dioxide gas shielded welding is used for bottoming, and weld joint prefabrication is performed through submerged-arc welding filling and capping methods. A process method for performing repair welding through carbon dioxide gas shielded welding is adopted, the welding materials are reasonably selected, welding parameters are scientifically controlled, the problems that anti-cracking toughness of weld joints and heat-affected zones is poor due to too high weld joint cooling speed and too high temperature are solved, the requirements of omission of postweld heat treatment of the large and thick steel plate for the toughness of a joint are met, the purpose of omitting the process of postweld heat treatment after repair welding of the D36-Z35 level large and thick ocean engineering steel plate with the service temperature of 0 DEG C and above and the thickness of 50-110 mm is successively achieved, the production process is simplified, the production period is shortened, and cost is reduced.
Description
Technical field
The present invention relates to a kind of welding technology field, particularly the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate.
Background technology
Along with the development of marine petroleum development technology, the steel plate that the large ocean equipment such as ocean platform, jacket, FPSO use is more and more thicker, more and more higher to the requirement of steel.Ocean platform is a kind of typical large-scale welding engineering structure, its complex structure, mother metal thickness is large, welding requirements is high, the prefabricated welding of most slab can use the welding procedure of exempting post weld heat treatment to construct, greatly reduce need of production time and cost, but, in actual production process, the appearance of the weld defect of large slab is inevitable, these defects are being welded to the structure property deterioration also usually occurring joint in the process of reprocessing, produce high numerical value welding residual stress even defect thus, make to reprocess the position that welding region becomes the weakest in whole platform structure.Ensureing the performance of reprocessing welding point, improve its low temperature fracture toughness, is the key factor ensureing ocean platform safe operation.Present stage, many enterprises have employed SMAW (SMAW) when welding is reprocessed, and generally used the method for post weld heat treatment to improve the toughness that welding point reprocessed by large slab.But this operation of post weld heat treatment, not only need electrical heating cabinet, heating plate, heat-preservation cotton etc., at substantial manpower and materials, long in time limit, cost is high, and the toughness value of high strength steel post weld heat treatment gained joint is mostly low than untreated state.Therefore, concerning welding point reprocessed by steel plate, more economic desirable method is by selecting appropriate welding material, welding method, and use CTOD verification experimental verification technology, adjusting and optimizing welding procedure, ensures the toughness of reprocessing welding point, to exempt post weld heat treatment operation.This reduces manufacturing cost significant to the manufacturing cycle shortening offshore platform structure.
Summary of the invention
The object of the invention is to need to carry out this problem of post weld heat treatment operation after providing the present invention to reprocess welding mainly for marine engineering large thick steel plate to solve above-mentioned the deficiencies in the prior art, invented the bottoming of a kind of employing carbon dioxide gas arc welding, the method for submerged-arc welding filling and capping carries out the prefabricated weld seam of weld seam; And adopt carbon dioxide gas arc welding to carry out reprocessing the process of welding; by reasonably selecting welding material; the control welding parameter of science; finally reach the requirement that large thick steel plate exempts post weld heat treatment butt joint toughness, successfully achieve the operation that service temperature exempts post weld heat treatment after 0 DEG C and the thick GB712-2011DH36 level marine engineering large thick steel plate of above 50-110mm reprocess welding.
To achieve these goals, the medicine core gas shielded arc welding Rework Technics of the low temperature environment Ocean engineering large thick steel plate designed by the present invention, it is characterized in that: this Rework Technics comprises the following steps: first-selected, the selection of welding method and welding material, prefabricated weld seam is carried out to DH36 mother metal: select carbon dioxide gas arc welding bottoming through wlding test, flux-cored wire is selected in welding; Submerged-arc welding filling and capping, select the low alloy steel welding wire of high cleanliness through wlding welding wire, adapted solder flux is the supporting fluorine alkaline type sintered flux with welding wire manufacturer's recommended; And carry out reprocessing weld seam: adopt carbon dioxide gas arc welding to carry out reprocessing welding, select suitable flux-cored wire through wlding testing sieve;
Secondly, to the selection of welding condition, above-mentioned submerged-arc welding major parameter is set to: gage of wire 4mm, electric current 560 ~ 630A, voltage 27 ~ 33V, speed of welding 397 ~ 648mm/min, thermal weld stress 1.0KJ/mm-3.0KJ/mm; The welding parameter of above-mentioned carbon-dioxide arc welding is: welding wire parameter 1.4mm, electric current 180 ~ 230A, voltage 23 ~ 27V, and speed of welding is 174 ~ 238mm/min, thermal weld stress 1.3J/mm ~ 1.7J/mm;
In this prefabricated weld seam welding process to the control of temperature, preheating and interlayer temperature control: prefabricated weld seam welds 110 DEG C-198 DEG C, to the control of electric current, voltage and speed of welding, make heat input overall distribution between 1.0KJ/mm-3.0KJ/mm;
Carry out nondestructive inspection after spending 48 hours, this nondestructive inspection mode is including but not limited to magnetic powder inspection and ultrasonic examination;
Reprocess weld seam: adopt carbon dioxide gas arc welding to carry out reprocessing welding, its parameter is as follows: welding wire parameter 1.4mm, electric current 190 ~ 270A, voltage 22 ~ 28V, speed of welding is 94 ~ 266mm/min, thermal weld stress 1.0J/mm ~ 2.5J/mm, preheating and interlayer temperature control at 115 DEG C-200 DEG C;
For adopting two kinds of bevel for welding forms when reprocessing welding: adopt gouge double V-groove and adopt the butt welding of K type groove type;
Again carry out nondestructive inspection after spending 48 hours, this nondestructive inspection mode is including but not limited to magnetic powder inspection and ultrasonic examination.
Preferably, described prefabricated and reprocess weld seam it adopts steel board, steel plate just thickness is 50-100mm, and reprocessing thickness is 50-100mm, can contain most conventional ocean engineering slab.
Preferably, described is prefabricated with when reprocessing weld seam K type groove, keeps the uniformity of electric current, voltage and the speed of welding in welding process, to ensure the integrality of straight flange, is convenient to producing of heat affected area CTOD sample.
Preferably, before its weldering of described prefabricated weld seam, solder flux will be dried about 2 hours at 300 DEG C-350 DEG C; Carbon dioxide gas arc welding gas pushing quantity foot: 15-25L/min.
Preferably, described prefabricated and reprocess in weld seam process and should calculate heat input, ensure that the input of carbon dioxide gas arc welding heat is at 1.3-1.7KJ/mm, the input of submerged arc welding heat is at 1.7-3.0KJ/mm.
Preferably, welding is reprocessed to DH36 mother metal, the CTOD test value >=0.15mm of its gained Seam and heat effected zone 0 DEG C time.
The medicine core gas shielded arc welding Rework Technics of the low temperature environment Ocean engineering large thick steel plate that the present invention obtains; have the following advantages: 1, reprocess welding method and adopt carbon dioxide gas arc welding; be suitable for the changeable situation of on-the-spot groove type and welding position; improve production efficiency, reduce labour intensity.
2, the CTOD test of 0 DEG C of temperature has been carried out, fill up the blank that CTOD test reprocessed by ocean engineering shipbuilding industry DH36 level steel plate, the slab of the DH36 level 50-110mm of environment temperature more than 0 DEG C can adopt this Rework Technics to weld completely, and do not need butt welded seam to carry out post weld heat treatment, save manpower and materials, improve production efficiency, reduce cost, energy-conserving and environment-protective, obtain huge economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the prefabricated weld seam of the present invention " X " type groove schematic diagram;
Fig. 2 is that the present invention reprocesses weld seam " V " type groove schematic diagram;
Fig. 3 is that the present invention reprocesses weld seam " K " type groove schematic diagram;
In figure: prefabricated weld seam 1,2.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment:
As shown in Figure 1 to Figure 3; the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate provided by the invention; the present invention adopts DH36 motherboard material; steel plate thickness 100mm; reprocessing thickness is that (K type groove is 100mm to 100mm; double V-groove is 75mm deeply), be the actual plate thickness that off-the-shelf item is maximum, belong to the welding of ultra-thick steel plates and reprocess.This material has the advantages such as intensity is high, good-toughness, welding characteristic are good.Have a wide range of applications in the industry such as ocean engineering, shipbuilding.The prefabricated weld seam of breadboard adopts the butt welding of X-type groove type, and welding method is carbon dioxide gas arc welding bottoming, submerged-arc welding filling and capping; Two kinds of bevel for welding forms are adopted: 1, employing gouge double V-groove (see Fig. 2) is tested for the CTOD of Weld pipe mill when reprocessing welding; 2, adopt K type groove type butt welding (see Fig. 3) to test for the CTOD of heat affected area, welding method is carbon dioxide gas arc welding bottoming, filling and capping.Through technical staff to the investigation of wlding business and repeatedly preliminary test, first-selected, the selection of welding method and welding material, prefabricated weld seam: select carbon dioxide gas arc welding bottoming through wlding test, flux-cored wire is selected in welding; Submerged-arc welding filling and capping, select the low alloy steel welding wire of high cleanliness through wlding welding wire, adapted solder flux is the supporting fluorine alkaline type sintered flux with welding wire manufacturer's recommended; Reprocess weld seam: adopt carbon dioxide gas arc welding to carry out reprocessing welding, select suitable flux-cored wire through wlding testing sieve; Concrete can be prefabricated weld seam: diameter can be selected to be the flux-cored wire bottoming of Φ 1.4mm, flux-cored wire can select flux-cored wire FORMULAXL-550 (H4) on market, filling and capping can select the welding wire for submerged-arc welding OE-SD3 of diameter of phi 4.0mm, and adapted solder flux is adapted solder flux is fluorine alkaline type sintered flux.The rewelding selecting flux-cored wire FORMULAXL-550 (H4) of diameter of phi 1.4mm.
1. blanking
Find corresponding steel plate by the material certificate Qu Liao factory of steel plate, go out test plate (panel) according to manuscript cutting processing, blanking process Zhong You third party classification society witness also beats steel seal.
2. couple welder gives training.
Parameter in training process will carefully adjust and record; Must heat input be calculated in (current/voltage/weldering speed/protective gas flow velocity) process, have deviation to want in time and welder carries out linking up and adjusting parameter.
The typical welding parameter of table 1 submerged-arc welding
| Gage of wire (mm) | Electric current (A) | Voltage (V) | Speed of welding (mm/min) |
| 4.0 | 600 | 31 | 500 |
The typical welding parameter of table 2 carbon dioxide gas arc welding (reprocessing)
| Position | Gage of wire (mm) | Electric current (A) | Voltage (V) | Speed of welding (mm/min) |
| 2G | 1.4 | 280 | 29 | 380 |
| 3G | 1.4 | 240 | 25 | 200 |
3. test plate (panel) machines and carries out test specimen assembling (adding enough thick horse plate and longer run-on tab) after checking size qualification, again checks that whether test plate (panel) fitted position is qualified after assembling.The long 140mm of run-on tab, thickness and mother metal uniform thickness.
4. test plate (panel) group is to after good, notifies third party and carries out the welding of original weld seam first surface, welding process should strictly control following some:
A., before weldering, notice that solder flux will be dried about 2 hours at 300 DEG C-350 DEG C; Carbon dioxide gas arc welding gas pushing quantity foot: 15-25L/min.
B. preheat temperature and interlayer temperature, is not less than 110 DEG C, and not higher than 200 DEG C, thermometric distance is outside 75mm; Disconnected postwelding, the temperature of preheating again should be not less than formal welding preheat temperature.
C. calculate heat input at any time in process, guarantee that it fuses completely, and can not heat input excessive, ensure that the input of carbon dioxide gas arc welding heat is at about 1.3-1.7KJ/mm, the input of submerged arc welding heat is at about 1.7-3.0KJ/mm as far as possible.
D. note often being soldered together, be polished to and there is no slag inclusion.
E. in the middle of, accidents happened to pauses, must by clean for joint polishing.
F. after attention is measured and is soldered carbon dioxide gas arc welding, the distance on layer surface and test plate (panel) surface.Think that follow-up back side root process provides data foundation.
5. after one side weld, until after it is cooled to about 30 DEG C, lay down horse plate, gouge to certain degree of depth, then is polished, and groove is expanded into U-shaped or half U type, gouge with polish K type groove time, the integrality keeping straight flange must be noted.
6. carry out the welding of second.Weld second, it is similar that the item of attention and first surface weld.
7., after being soldered completely, crossing and carry out nondestructive inspection in 48 hours later, because thickness of slab is thicker, carry out magnetic powder inspection and ultrasonic examination.
8. nondestructive inspection qualified after, prepared by modes such as cutting, gouge, polishings and reprocess welding point.
When reprocessing group to and welding points for attention with original weld similar, but also to pay special attention to following some:
Preheat temperature and interlayer temperature, be not less than 115 DEG C, not higher than 200 DEG C.
In rework process, the input of carbon dioxide gas arc welding heat controls at about 1.0-2.5KJ/mm as far as possible.
During the back chipping of back, ensure to remove root defect completely, the back chipping degree of depth is at least 5mm.
9. reprocess after welding completes, cross and carry out nondestructive inspection in 48 hours later, flaw detection type is identical with former weld seam.
10. flaw detection is qualified marks test specimen and cuts afterwards.
11. mechanical test test specimen processing.
12. carry out mechanical property test and CTOD test.
Experimental result
1. common mechanics performance test results is as following table (table 3, table 4, table 5, table 6, table 7, table 8)
A.2G position
Table 32G position cross tensile test
| Specimen coding | Tensile strength (N/mm2) |
| QPJ13-034-T3 | 511 |
| QPJ13-034-T4 | 553 |
| QPJ13-034-T5 | 519 |
| QPJ13-034-T6 | 504 |
| QPJ13-034-T7 | 520 |
| QPJ13-034-T8 | 536 |
| QPJ13-034-T9 | 534 |
| QPJ13-034-T10 | 547 |
The table full weld seam tension test in 42G position
| Specimen coding | Yield strength (N/mm2) | Hot strength (N/mm2) | Percentage elongation % |
| QPJ13-034-T1 | 561 | 605 | 27.5 |
Table 52G position Charpy V test
Note: specimen size: 10mm*10mm*55mm test temperature :-20 DEG C
B.3G position
Table 63G position cross tensile test
| Specimen coding | Tensile strength (N/mm2) |
| QPJ13-035-T3 | 523 |
| QPJ13-035-T4 | 529 |
| QPJ13-035-T5 | 551 |
| QPJ13-035-T6 | 540 |
| QPJ13-035-T7 | 520 |
| QPJ13-035-T8 | 524 |
| QPJ13-035-T9 | 525 |
| QPJ13-035-T10 | 559 |
The table full weld seam tension test in 73G position
| Specimen coding | Yield strength (N/mm2) | Hot strength (N/mm2) | Percentage elongation % |
| QPJ13-035-T1 | 529 | 584 | 24.5 |
Table 83G position Charpy V test
Note: specimen size: 10mm*10mm*55mm test temperature :-20 DEG C
3.CTOD result of the test is as following table (table 9, table 10)
Table 92G position CTOD tests (0 DEG C)
Table 103G position CTOD tests (0 DEG C)
Carry out welding procedure qualification test or produced on-site construction according to the invention process process, the qualified welding point exempting post weld heat treatment requirement can be met.
For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its framework form can be flexible and changeable, just makes some simple deduction or replace, all should be considered as belonging to the scope of patent protection that claims of being submitted to by the present invention are determined.
Claims (7)
1. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate, it is characterized in that: this Rework Technics comprises the following steps: first-selected, the selection of welding method and welding material, carry out prefabricated weld seam to DH36 mother metal: select carbon dioxide gas arc welding bottoming, flux-cored wire is selected in welding; Submerged-arc welding filling and capping, welding wire selects the low alloy steel welding wire of high cleanliness, and adapted solder flux is fluorine alkaline type sintered flux; And carry out reprocessing weld seam: adopt carbon dioxide gas arc welding to carry out reprocessing welding;
Secondly, to the selection of welding condition, above-mentioned submerged-arc welding major parameter is set to: gage of wire 4mm, electric current 560 ~ 630A, voltage 27 ~ 33V, speed of welding 397 ~ 648mm/min, thermal weld stress 1.0KJ/mm-3.0KJ/mm; The welding parameter of above-mentioned carbon-dioxide arc welding is: welding wire parameter 1.4mm, electric current 180 ~ 230A, voltage 23 ~ 27V, and speed of welding is 174 ~ 238mm/min, thermal weld stress 1.3J/mm ~ 1.7J/mm;
In this prefabricated weld seam welding process to the control of temperature, preheating and interlayer temperature control: prefabricated weld seam welds 110 DEG C-198 DEG C, to the control of electric current, voltage and speed of welding, make heat input overall distribution between 1.0KJ/mm-3.0KJ/mm;
Carry out nondestructive inspection after spending 48 hours, this nondestructive inspection mode is including but not limited to magnetic powder inspection and ultrasonic examination;
Reprocess weld seam: adopt carbon dioxide gas arc welding to carry out reprocessing welding, its parameter is as follows: welding wire parameter 1.4mm, electric current 190 ~ 270A, voltage 22 ~ 28V, speed of welding is 94 ~ 266mm/min, thermal weld stress 1.0J/mm ~ 2.5J/mm, preheating and interlayer temperature control at 115 DEG C-200 DEG C;
For adopting two kinds of bevel for welding forms when reprocessing welding: adopt gouge double V-groove and adopt the butt welding of K type groove type;
Again carry out nondestructive inspection after spending 48 hours, this nondestructive inspection mode is including but not limited to magnetic powder inspection and ultrasonic examination.
2. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate according to claim 1, is characterized in that: described prefabricated and reprocess weld seam it adopts steel board, steel plate thickness is 50-110mm, and reprocessing thickness is 50-110mm.
3. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate according to claim 1; it is characterized in that: described is prefabricated with when reprocessing weld seam K type groove; keep the uniformity of electric current, voltage and the speed of welding in welding process; to ensure the integrality of straight flange, be convenient to producing of heat affected area CTOD sample.
4. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate according to claim 1 and 2, is characterized in that: before described prefabricated and rewelding is sewn on its weldering, and solder flux will be dried about 2 hours at 300 DEG C-350 DEG C; Carbon dioxide gas arc welding gas pushing quantity foot: 15-25L/min.
5. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate according to claim 1 and 2; it is characterized in that: described prefabricated and reprocess in weld seam process and should calculate heat input; ensure that the input of carbon dioxide gas arc welding heat is at 1.3-1.7KJ/mm, the input of submerged arc welding heat is at 1.7-3.0KJ/mm.
6. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate according to claim 3; it is characterized in that: described prefabricated and reprocess in weld seam process and should calculate heat input; ensure that the input of carbon dioxide gas arc welding heat is at 1.3-1.7KJ/mm, the input of submerged arc welding heat is at 1.7-3.0KJ/mm.
7. the medicine core gas shielded arc welding Rework Technics of low temperature environment Ocean engineering large thick steel plate according to claim 1, is characterized in that: reprocess welding to DH36 mother metal, the CTOD test value >=0.15mm of its gained Seam and heat effected zone 0 DEG C time.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964912A (en) * | 2017-04-28 | 2017-07-21 | 广船国际有限公司 | A kind of welding method of low-temperature cast steel part and marine board |
| CN107309527A (en) * | 2017-06-30 | 2017-11-03 | 蓬莱巨涛海洋工程重工有限公司 | The Large Heat Input Welding technique of marine engineering large thick steel plate under a kind of low temperature |
| CN114734124A (en) * | 2022-05-07 | 2022-07-12 | 广船国际有限公司 | Processing method of electrogas welding joint |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879645A (en) * | 2010-07-06 | 2010-11-10 | 蓬莱巨涛海洋工程重工有限公司 | Marine engineering large thick steel plate submerged arc welding process method in low-temperature environment |
| CN102126062A (en) * | 2011-01-07 | 2011-07-20 | 蓬莱巨涛海洋工程重工有限公司 | Secondary repair process method of high-strength steel welds |
| CN103447672A (en) * | 2013-08-16 | 2013-12-18 | 江苏省沙钢钢铁研究院有限公司 | Submerged-arc welding technology of big-thickness low-temperature steel plate with yield strength of 690MPa grade |
| CN104741745A (en) * | 2015-04-24 | 2015-07-01 | 中国海洋石油总公司 | Submerged arc welding process for marine engineering structure under low-temperature environment service |
| JP2015150597A (en) * | 2014-02-17 | 2015-08-24 | 新日鐵住金株式会社 | Submerged arc welding part excellent in low temperature toughness |
-
2015
- 2015-09-21 CN CN201510604316.6A patent/CN105127557B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879645A (en) * | 2010-07-06 | 2010-11-10 | 蓬莱巨涛海洋工程重工有限公司 | Marine engineering large thick steel plate submerged arc welding process method in low-temperature environment |
| CN102126062A (en) * | 2011-01-07 | 2011-07-20 | 蓬莱巨涛海洋工程重工有限公司 | Secondary repair process method of high-strength steel welds |
| CN103447672A (en) * | 2013-08-16 | 2013-12-18 | 江苏省沙钢钢铁研究院有限公司 | Submerged-arc welding technology of big-thickness low-temperature steel plate with yield strength of 690MPa grade |
| JP2015150597A (en) * | 2014-02-17 | 2015-08-24 | 新日鐵住金株式会社 | Submerged arc welding part excellent in low temperature toughness |
| CN104741745A (en) * | 2015-04-24 | 2015-07-01 | 中国海洋石油总公司 | Submerged arc welding process for marine engineering structure under low-temperature environment service |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964912A (en) * | 2017-04-28 | 2017-07-21 | 广船国际有限公司 | A kind of welding method of low-temperature cast steel part and marine board |
| CN107309527A (en) * | 2017-06-30 | 2017-11-03 | 蓬莱巨涛海洋工程重工有限公司 | The Large Heat Input Welding technique of marine engineering large thick steel plate under a kind of low temperature |
| CN114734124A (en) * | 2022-05-07 | 2022-07-12 | 广船国际有限公司 | Processing method of electrogas welding joint |
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