CN105127562A - Method for welding dissimilar material welded joint of composite plate - Google Patents
Method for welding dissimilar material welded joint of composite plate Download PDFInfo
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- CN105127562A CN105127562A CN201510635229.7A CN201510635229A CN105127562A CN 105127562 A CN105127562 A CN 105127562A CN 201510635229 A CN201510635229 A CN 201510635229A CN 105127562 A CN105127562 A CN 105127562A
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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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/02—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
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a method for welding a dissimilar material welded joint of a composite plate, belongs to the field of dissimilar material welding of composite plates of pressure vessels, and aims to solve the problems that the corrosion resistance at the welded joint part is reduced, welding cracks easily occur in the joint face of a composite plate and the like. According to the technical scheme, the method mainly comprises the following steps: processing a groove, removing the clad layer and oil rust on the periphery of the groove until the periphery of the groove has metal luster; surfacing from the bottom of the groove, surfacing the insulating layer on the side of the composite plate, and performing stress relieving annealing thermal treatment on the composite plate; welding by adopting small-sized welding rods in a multi-layer and multi-pass welding manner; and performing butt welding on the composite plate and an austenitic stainless steel material, performing manual tungsten argon arc welding for the backing weld, filling the weld pass by adopting shielded metal arc welding, small-size, small thermal input, short arc quick welding and multi-layer multi-pass welding. The method can be used for welding a dissimilar material welded joint between a Cr-Mo low-alloy steel/carbon steel-austenitic stainless steel composite plate and austenitic stainless steel, has excellent welded joint quality, and can be used for overcoming the defect of the prior art.
Description
Technical field
The invention belongs to Welding Technique of Pressure Vessel field, particularly relate to the composite plate welding dissimilar materials that pressure vessel and equipment manufactures.
Background technology
Vessel shell stainless steel clad plate is mainly basic unit with low-alloy steel, austenitic stainless steel material is cladding.Adopt the clad steel plate that the methods such as explosive welding (EW) are made, cladding thickness is generally at more than 3mm, it has had the good mechanical performance of low-alloy steel, processing characteristics and stainless corrosion resistance concurrently, is mainly used in requiring the higher equipment such as storage tank, tower, reactor to corrosivity.Nozzle Zone of Vessels flange adopts Austenitic stainless steel forging sometimes.
Weld the welding being mainly divided into basic unit's dissimilar steel, transition zone and cladding steel of the same race between stainless steel clad plate with austenitic stainless steel material, the welding of basic unit and transition zone is the committed step of composite plate welding dissimilar materials.Composite plate welding dissimilar materials situation is complicated, if during welding, slope type design is unreasonable, wlding is selected and improperly all will welding point position be caused to occur the situation that crackle, decay resistance reduce.
Summary of the invention
Goal of the invention is the problems such as the decay resistance at welding point position between solution stainless steel clad plate and austenitic stainless steel reduces, composite plate faying face position weld crack.
The invention provides a kind of welding method of composite plate welding dissimilar materials joint, technical scheme is as follows:
1) machined groove remove the cladding at composite plate groove position;
2) polishing removes groove peripheral part oil rust to metal luster;
3) composite plate groove position built-up welding, built-up welding thickness >=5mm, when design temperature is higher than adopting the welding of Ni material wlding when 370 DEG C; When design temperature does not adopt the wlding welding corresponding with austenitic stainless steel material higher than 370 DEG C; During the welding first floor, surfacing part and periphery >=120 DEG C are treated in preheating, and adopt SMAW to carry out built-up welding by bottom groove, in welding process, between road, temperature controls between 120-250 DEG C; Cladding and basic unit's faying face position adopt the welding rod of φ 3.2mm specification to weld, and welding Shi Shou road welding bead is from faying face position, and connect to the overlap welding of groove position successively, welding bead amount of lap controls at 5 ~ 6mm; First floor postwelding, be down to after below 100 DEG C until temperature and adopt SMAW built-up welding the second to third layer, in welding process, between road, temperature controls between 15-150 DEG C; Surfacing welding diameter is φ 3.2mm and φ 4.0mm, and current strength is respectively 80-100A, 140-150A, and voltage strength is 22 ~ 26V, power supply DC reverse connection, and speed of welding is respectively >=150mm/min, >=170mm/min, and welding bead amount of lap controls at 5 ~ 6mm;
4) postwelding carries out Stress relieving annealing heat treatment to composite plate;
5) groove after the composite board overlaying welding after polishing annealing clears up greasy dirt to metal luster;
6) described composite plate to be welded and austenitic stainless steel are docked, and carry out solid weldering;
7) welding of backing run: backing run adopts GTAW, two-sided inert gas shielding; Wlding and specification are with 3) described in; Power supply straight polarity direct current, argon arc welding wire diameter is φ 2.0mm, shield gas flow rate 8-12L/min, and welding current intensity is 120 ~ 150A, and voltage strength is 15 ~ 17V, and speed of welding is >=90mm/min, and between controlling in welding process, temperature is between 120-250 DEG C;
8) groove fills welding: fill weldering and adopt SMAW, multi-pass welding, short arc welding; Core diameter is φ 3.2mm and φ 4.0mm, current strength is respectively 80-100A, 140-150A, and voltage strength is 22 ~ 26V, power supply DC reverse connection, speed of welding is respectively >=150mm/min, >=170mm/min, and between controlling in welding process, temperature is between 120-250 DEG C.
The present invention compared with prior art has the following advantages:
1) convenient operation, can directly weld Cr-Mo low-alloy steel and austenitic stainless steel;
2) situations such as intensity difference is large, welding stress is concentrated, decay resistance reduces, generation weld crack are avoided;
3) backing run adopts GTAW, solve when internal diameter is less cannot the difficult point of back chipping, and weldquality is good, there will not be the defects such as non-penetration, slag inclusion, pore.
Accompanying drawing explanation
Fig. 1 is divided edge structure and welding procedure schematic diagram,
In figure: play arc-welding first welding bead during 1-built-up welding composite plate faying face herein, the bottoming of 2-GTAW, 3-size >=5mm herein.
Detailed description of the invention
Be described with reference to the accompanying drawings the concrete case study on implementation of patent of the present invention.
In the implementation case, composite plate take 14Cr1MoR as basic unit, and thickness is 20mm, and with austenitic stainless steel S32168 for composite bed, thickness is 3mm; Austenitic stainless steel material is S32168, and thickness is 24mm.Following welding measure is adopted to the welding of this stainless steel clad plate:
1) cladding at composite plate groove position is removed in machined groove machined, as shown in Figure 1;
2) polishing removes oil rust on groove position Cr-Mo material to metal luster, and wipe oil within the scope of the cladding of clearing up within the scope of composite plate groove periphery 100mm to be welded and austenitic stainless steel material groove periphery 100mm;
3) be coated with whiting within the scope of composite plate groove site boundary 200mm to protect, composite plate groove position built-up welding ENiCrMo-3, as shown in Figure 1: during the welding first floor preheating to treat within the scope of surfacing part and periphery 200mm >=120 DEG C, SMAW is adopted to carry out built-up welding by bottom groove, built-up welding thickness >=5mm, as shown in Reference numeral 3, in welding process, between road, temperature controls between 120-250 DEG C; Cladding and basic unit's faying face position adopt the welding rod of φ 3.2mm specification to weld, and welding Shi Shou road welding bead is from faying face position, and connect to the overlap welding of groove position successively, as shown in Reference numeral 1, welding bead amount of lap controls at 5 ~ 6mm.First floor postwelding, be down to after below 100 DEG C until temperature and adopt SMAW built-up welding the second to third layer, in welding process, between road, temperature controls between 15-150 DEG C; Surfacing welding diameter is φ 3.2mm and φ 4.0mm, and current strength is respectively 80-100A, 140-150A, and voltage strength is 22 ~ 26V, power supply DC reverse connection, and speed of welding is respectively >=150mm/min, >=170mm/min, and welding bead amount of lap controls at 5 ~ 6mm;
4) postwelding carries out Stress relieving annealing heat treatment to composite plate;
5) groove after the composite board overlaying welding after polishing annealing clears up greasy dirt to metal luster;
6) described composite plate to be welded and austenitic stainless steel are docked, and carry out solid weldering, be coated with whiting within the scope of each 200mm of weld seam left and right stainless steel or spread brown paper and protect, see Fig. 1;
7) welding of backing run: backing run adopts GTAW, as shown in Reference numeral 2, two-sided inert gas shielding, adopts the Ar of 99.99% usually; Power supply straight polarity direct current, welding wire selects ERNiCrMo-3, and argon arc welding wire diameter is φ 2.0mm, shield gas flow rate 8-12L/min, welding current intensity is 120 ~ 150A, and voltage strength is 15 ~ 17V, speed of welding is >=90mm/min, and between controlling in welding process, temperature is between 120-250 DEG C;
8) groove fills welding: fill weldering and adopt SMAW, multi-pass welding, short arc welding.Welding rod ENiCrMo-3, power supply DC reverse connection, core diameter is φ 3.2mm and φ 4.0mm, current strength is respectively 80-100A, 140-150A, voltage strength is 22 ~ 26V, power supply DC reverse connection, speed of welding is respectively >=150mm/min, >=170mm/min, and between controlling in welding process, temperature is between 120-250 DEG C; In welding process, strict control welding bead temperature, when the defect such as pore, crackle, undercut appears in face of weld, adopts stainless steel emery wheel to remove, prevents stainless steel contaminated.
Claims (1)
1. a welding method for composite plate welding dissimilar materials joint, is characterized in that technical scheme is as follows:
(1) machined groove remove the cladding at composite plate groove position;
(2) groove peripheral part oil rust is removed to metal luster;
(3) composite plate groove position built-up welding, built-up welding thickness >=5mm, when design temperature is higher than adopting the welding of Ni material wlding when 370 DEG C; When design temperature does not adopt the wlding welding corresponding with austenitic stainless steel material higher than 370 DEG C; During the welding first floor, surfacing part and periphery >=120 DEG C are treated in preheating, and adopt SMAW to carry out built-up welding by bottom groove, in welding process, between road, temperature controls between 120-250 DEG C; Cladding and basic unit's faying face position adopt the welding rod of φ 3.2mm specification to weld, and welding Shi Shou road welding bead is from faying face position, and connect to the overlap welding of groove position successively, welding bead amount of lap controls at 5 ~ 6mm; First floor postwelding, be down to after below 100 DEG C until temperature and adopt SMAW built-up welding the second to third layer, in welding process, between road, temperature controls between 15-150 DEG C; Surfacing welding diameter is φ 3.2mm and φ 4.0mm, and current strength is respectively 80-100A, 140-150A, and voltage strength is 22 ~ 26V, power supply DC reverse connection, and speed of welding is respectively >=150mm/min, >=170mm/min, and welding bead amount of lap controls at 5 ~ 6mm;
(4) postwelding carries out Stress relieving annealing heat treatment to composite plate;
(5) groove after the composite board overlaying welding after polishing annealing clears up greasy dirt to metal luster;
(6) described composite plate to be welded and austenitic stainless steel are docked, and carry out solid weldering;
(7) welding of backing run: backing run adopts GTAW, two-sided inert gas shielding; Wlding and specification are with described in (3); Power supply straight polarity direct current, argon arc welding wire diameter is φ 2.0mm, shield gas flow rate 8-12L/min, and welding current intensity is 120 ~ 150A, and voltage strength is 15 ~ 17V, and speed of welding is >=90mm/min, and between controlling in welding process, temperature is between 120-250 DEG C;
(8) groove fills welding: fill weldering and adopt SMAW, multi-pass welding, short arc welding; Core diameter is φ 3.2mm and φ 4.0mm, current strength is respectively 80-100A, 140-150A, and voltage strength is 22 ~ 26V, power supply DC reverse connection, speed of welding is respectively >=150mm/min, >=170mm/min, and between controlling in welding process, temperature is between 120-250 DEG C.
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| CN201510635229.7A CN105127562B (en) | 2015-09-30 | 2015-09-30 | Method for welding welded joint between stainless steel composite plate and austenitic stainless steel |
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| CN201510635229.7A CN105127562B (en) | 2015-09-30 | 2015-09-30 | Method for welding welded joint between stainless steel composite plate and austenitic stainless steel |
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| CN105127562B CN105127562B (en) | 2017-04-12 |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945389A (en) * | 2016-05-18 | 2016-09-21 | 张家港市恒强冷却设备有限公司 | Cooler tube plate butt-welding method |
| 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 |
| CN106514029A (en) * | 2016-12-20 | 2017-03-22 | 东方电气集团东方锅炉股份有限公司 | Method for surfacing end of long pipe |
| CN107511563A (en) * | 2016-06-16 | 2017-12-26 | 沈阳富创精密设备有限公司 | A kind of high-precision optical instrument base frame welding technique |
| CN107803607A (en) * | 2016-09-09 | 2018-03-16 | 中国石化工程建设有限公司 | Welding dissimilar materials structure for composite plate pressing pressure container |
| CN107984062A (en) * | 2017-11-27 | 2018-05-04 | 江苏金通灵流体机械科技股份有限公司 | A kind of welding method of SUS316 austenitic stainless steels and Weldox700E low-alloy quenched and tempered steel different steel welds |
| CN108127257A (en) * | 2017-12-21 | 2018-06-08 | 中广核工程有限公司 | In-service nuclear power station main equipment safe end weld defect restorative procedure |
| CN109048104A (en) * | 2018-08-16 | 2018-12-21 | 协易科技精机(中国)有限公司 | A kind of steel multi-pass tempering overlaying method |
| CN110064865A (en) * | 2019-05-06 | 2019-07-30 | 上海炳晟机电科技有限公司 | A kind of gas shield welding wire welded for circulating fluidized bed boiler rare earth alloy backplate and water-cooling wall fin |
| CN110198802A (en) * | 2017-01-24 | 2019-09-03 | 株式会社Ihi | The welding method of diffusion bonding body |
| CN110253118A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plates+aluminium titanium steel composite material welding method |
| CN111347131A (en) * | 2018-12-20 | 2020-06-30 | 核工业西南物理研究院 | CLF-1 and 316L dissimilar steel TIG welding method |
| CN112548268A (en) * | 2020-12-31 | 2021-03-26 | 江苏京沪重工有限公司 | Welding method for butt weld of stainless steel composite plate |
| CN112620877A (en) * | 2020-11-09 | 2021-04-09 | 天津新港船舶重工有限责任公司 | Welding method of super austenitic duplex stainless steel pipe and marine high-strength plate |
| CN113351966A (en) * | 2021-06-30 | 2021-09-07 | 沈阳汇博热能设备有限公司 | Dissimilar steel welding method for low alloy steel and austenitic stainless steel |
| CN113878207A (en) * | 2021-10-25 | 2022-01-04 | 华能甘肃西固热电有限公司 | Welding method of dissimilar steel of 12Cr1MoV and 07Cr19Ni11Ti |
| CN114247961A (en) * | 2020-09-21 | 2022-03-29 | 江苏利柏特股份有限公司 | Method for welding and heat treating SA-335P11 and SA-240TYPE310S dissimilar steel |
| CN114603234A (en) * | 2022-04-02 | 2022-06-10 | 鲁西工业装备有限公司 | Method for welding 42CrMo alloy steel and low-carbon steel dissimilar steel |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
| CN115026380A (en) * | 2022-08-10 | 2022-09-09 | 山西阳煤化工机械（集团）有限公司 | Method for welding closure seam of tube plate and shell pass cylinder |
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| US11498145B2 (en) | 2017-01-24 | 2022-11-15 | Ihi Corporation | Welding method of diffusion bonded structure |
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| CN108127257A (en) * | 2017-12-21 | 2018-06-08 | 中广核工程有限公司 | In-service nuclear power station main equipment safe end weld defect restorative procedure |
| CN108127257B (en) * | 2017-12-21 | 2019-11-12 | 中广核工程有限公司 | In-service nuclear power station main equipment safe end weld defect restorative procedure |
| CN109048104A (en) * | 2018-08-16 | 2018-12-21 | 协易科技精机(中国)有限公司 | A kind of steel multi-pass tempering overlaying method |
| CN111347131A (en) * | 2018-12-20 | 2020-06-30 | 核工业西南物理研究院 | CLF-1 and 316L dissimilar steel TIG welding method |
| CN110064865A (en) * | 2019-05-06 | 2019-07-30 | 上海炳晟机电科技有限公司 | A kind of gas shield welding wire welded for circulating fluidized bed boiler rare earth alloy backplate and water-cooling wall fin |
| CN110064865B (en) * | 2019-05-06 | 2021-01-01 | 上海炳晟机电科技有限公司 | Gas shield welding wire for welding circulating fluidized bed boiler protection plate and water-cooled wall fin |
| CN110253118A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plates+aluminium titanium steel composite material welding method |
| CN114247961A (en) * | 2020-09-21 | 2022-03-29 | 江苏利柏特股份有限公司 | Method for welding and heat treating SA-335P11 and SA-240TYPE310S dissimilar steel |
| CN112620877A (en) * | 2020-11-09 | 2021-04-09 | 天津新港船舶重工有限责任公司 | Welding method of super austenitic duplex stainless steel pipe and marine high-strength plate |
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| CN113351966A (en) * | 2021-06-30 | 2021-09-07 | 沈阳汇博热能设备有限公司 | Dissimilar steel welding method for low alloy steel and austenitic stainless steel |
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| CN115026380A (en) * | 2022-08-10 | 2022-09-09 | 山西阳煤化工机械（集团）有限公司 | Method for welding closure seam of tube plate and shell pass cylinder |
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