CN102513713A - Welding method for stainless steel composite board pressure vessel shell and insert-type stainless steel connecting pipe - Google Patents
Welding method for stainless steel composite board pressure vessel shell and insert-type stainless steel connecting pipe Download PDFInfo
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- CN102513713A CN102513713A CN2011104150184A CN201110415018A CN102513713A CN 102513713 A CN102513713 A CN 102513713A CN 2011104150184 A CN2011104150184 A CN 2011104150184A CN 201110415018 A CN201110415018 A CN 201110415018A CN 102513713 A CN102513713 A CN 102513713A
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Abstract
The invention discloses a welding method for a stainless steel composite board pressure vessel shell and an insert-type stainless steel connecting pipe. The method comprises the steps of a) arranging a pipe hole of the stainless steel connecting pipe in a stainless steel composite board pressure vessel shell, and manufacturing a pipe hole wall to be a primary bevel with a K shape or a single V shape; b) performing bead-welding on a primary bevel surface by using high chromium nickel stainless steel welding rods to form a transition isolating layer with certain thickness, so as to form a secondary bevel; c) carrying out stress-relief heat treatment on the stainless steel composite board pressure vessel shell after the bead welding; and d) welding corner connecting joints between the stainless steel connecting pipe and the stainless steel composite board bead-welding layer by using stainless steel welding rods with different materials according to a stainless steel composite layer on a composite board. As the transition isolating layer with the certain thickness is firstly bead-welded on the primary bevel of the basic layer side of the stainless steel composite board by using the high chromium nickel stainless steel welding rods, and then the corner connecting joints are welded by the stainless steel welding rods, so that carbon steel and low alloy steel components are transited into stainless steel components, the welding line plasticity can be transited from low to high, cracks are avoided, and the using performance is reliable.
Description
Technical field
The present invention relates to the welding method that a kind of stainless steel clad plate pressing pressure container casing and plug-in type stainless steel are taken over.
Background technology
Stainless steel clad plate is widely used in the pressure vessel manufacturing of industries such as electricity is built, petrochemical industry, medicine, light industry, and electricity is built, petrochemical industry, medicine, light industry, automobile and other industries.The basic unit of stainless steel clad plate (carbon steel, low-alloy steel etc.) welds with the corner joint that stainless steel is taken over, and adopts high chromium nickel wlding (like A302, A042, A062 etc.) welding usually.Earlier in stainless steel clad plate housing basic unit 2, open K type or single V-butt, on stainless steel double layer 1, open monolateral double V-groove then, groove is 2mm in thickness direction stretches into carbon steel base layer 2, uses to give over to built-up welding transition separation layer.Weld carbon steel base layer 2 during welding earlier and take over 3 corner joint weld seam 5, adopt high chromium-nickel electrode (, deciding) welding according to the material of composite bed like A302, A062, A042 with stainless steel.Basic unit's welding is through after the assay was approved, with stainless steel electrode built-up welding stainless steel transition zone and surface layer.Along with the increase of thickness of shell, groove section is long-pending to be increased, and corner joint weld seam 5 needs the deposited metal amount to heighten, and for this reason, the weld seam shrinkage stress increases, and generally minimum from the groove bottom, both ends are maximum.And the deposited metal percentage elongation of high chromium-nickel electrode is merely 25%, and the plasticity compensation is limited, simultaneously; Corner joint weld seam 5 carbon steel side fusion area uneven components, defective is more, and bond strength is lower; Under big action of pulling stress, this zone often becomes the cradle of crackle.And under the bigger situation of thickness, corner joint weld seam 5 often need carry out bulk heat treatmet with housing, and not only weld crack can't be avoided, and the corrosion resisting property of weld seam also descends to some extent.So this method is only applicable to the thin housing of thickness of slab and the welding of adapter.
For solving crack problem, generally adopt nickel-base welding rod welding this type of joint (as shown in Figure 1) at present in the industry.For the thicker housing and the welding of adapter, then adopting the deposited metal percentage elongation usually is 35% nickel-base welding rod welding corner joint weld seam 5.The plasticity of nickel-base welding rod is better; Suitable plastic deformation storage ability is arranged; Can effectively avoid crackle to produce, but because nickel-base welding rod composition and carbon steel or the stainless steel capital differs bigger cause Weld Performance far below mother metal; The welding point serviceability is undesirable after the heat treatment, can not thoroughly eradicate the generation of weld crack; In addition, the nickel-base welding rod of high price has also increased welding cost.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of weld strength high, the difficult stainless steel clad plate pressing pressure container casing of weld crack and the welding method that the plug-in type stainless steel is taken over of producing.
For addressing the above problem, the technical scheme that the present invention adopts is: the welding method that a kind of stainless steel clad plate pressing pressure container casing and plug-in type stainless steel are taken over, and its step is following:
A), on stainless steel clad plate pressing pressure container casing, offer the pore that stainless steel is taken over, the pore wall is processed into a groove of K type or single V-type;
B), on groove with the certain thickness transition separation layer of high chromium nickel stainless steel welding rod built-up welding, form the secondary groove;
C), with the heat treatment that eliminates stress of the stainless steel clad plate pressing pressure container casing after the built-up welding;
D), use with the stainless steel electrode soldering stainless steel adapter of material and the corner joint between the stainless steel clad plate overlay cladding according to the material of the stainless steel double layer on the composite plate.
The opening diameter of described pore is taken over the big 6-10mm of outside dimension than stainless steel, and the thickness of said transition separation layer is the gap width between pore and stainless steel are taken over.
Described heat treated temperature is 550 ± 10 ℃.
The invention has the beneficial effects as follows: owing on a groove, wrap basic unit with the certain thickness transition separation layer of high chromium-nickel electrode built-up welding; Weld corner joint with stainless steel electrode then; With basic unit's composition transition is the stainless steel composition, and weld seam has formed the transition of composition nature, the i.e. ascending transition of plasticity; Avoided the generation of crackle, serviceability is reliable.
In addition, adopt stainless steel electrode to replace nickel-base welding rod to weld corner joint, greatly reduce welding cost, stainless steel weld joint need not heat-treated simultaneously, has kept the decay resistance of weld seam.
Description of drawings
Fig. 1 is the welding method sketch map of the dissimilar steel corner connection welding point that generally adopts of industry.
Fig. 2 is the sketch map of a kind of welding method of the present invention.
Fig. 3 is the sketch map of a kind of welding method of the present invention.
Among Fig. 1-3: 1, carbon steel base layer, 2, the stainless steel double layer, 3, stainless steel takes over, 4, the transition separation layer, 5, the corner joint weld seam.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further specified.
Welding method as shown in Figure 2, that a kind of stainless steel clad plate pressing pressure container casing and plug-in type stainless steel are taken over, its step is following:
A), on carbon steel, stainless steel clad plate pressing pressure container casing, offer and be used to install the pore that stainless steel is taken over, the opening diameter of pore is taken over the big 6mm of 3 outside dimensions than stainless steel, on the hole wall of pore, offers a groove of K type;
B), on a groove, use the transition separation layer 4 of high chromium-nickel electrode built-up welding one thickness as 6mm, formation secondary groove;
C), the stainless steel clad plate pressing pressure container casing after the built-up welding is heat-treated to eliminate stress by specification requirement, heat treated temperature is 550 ℃;
D), use with the stainless steel electrode soldering stainless steel adapter 3 of material and the corner joint between stainless steel clad plate according to the material of the stainless steel double layer 2 on the composite plate.
Welding method as shown in Figure 3, that a kind of stainless steel clad plate pressing pressure container casing and plug-in type stainless steel are taken over, its step is following:
A), on stainless steel clad plate pressing pressure container casing, offer and be used to install the pore that stainless steel is taken over, the opening diameter of pore is taken over the big 8mm of 3 outside dimensions than stainless steel, on the hole wall of pore, offers a groove of single V-type;
B), on a groove, use the transition separation layer 4 of high chromium-nickel electrode built-up welding one thickness as 8mm, formation secondary groove;
C), the stainless steel clad plate pressing pressure container casing after the built-up welding is heat-treated to eliminate stress by specification requirement, heat treated temperature is 550 ℃;
D), use with the stainless steel electrode soldering stainless steel adapter 3 of material and the corner joint between stainless steel clad plate according to the material of the stainless steel double layer 2 on the composite plate.
Owing on a groove, wrap carbon steel or low alloy steel basic unit 1 with the certain thickness transition separation layer 4 of high chromium-nickel electrode built-up welding; Then with stainless steel electrode welding corner joint 5; With the transition of carbon steel or low alloy steel composition is the stainless steel composition, and weld seam has formed the transition of composition nature, the i.e. ascending transition of plasticity; Avoided the generation of crackle, serviceability is reliable.
In addition, adopt stainless steel electrode to replace nickel-base welding rod to weld corner joint 5, greatly reduce welding cost, stainless steel weld joint need not heat-treated simultaneously, has kept the decay resistance of weld seam.
Claims (3)
1. stainless steel clad plate pressing pressure container casing and the plug-in type stainless steel welding method of taking over, its step is following:
A), on stainless steel clad plate pressing pressure container casing, offer the pore that stainless steel is taken over, the pore wall is processed into a groove of K type or single V-type;
B), on groove face with the certain thickness transition separation layer of high chromium nickel stainless steel welding rod built-up welding, form the secondary groove;
C), with the heat treatment that eliminates stress of the stainless steel clad plate pressing pressure container casing after the built-up welding;
D), use with the stainless steel electrode soldering stainless steel adapter of material and the corner joint between the stainless steel clad plate overlay cladding according to the material of the stainless steel double layer on the composite plate.
2. the welding method that a kind of stainless steel clad plate pressing pressure container casing according to claim 1 and plug-in type stainless steel are taken over; It is characterized in that: the opening diameter of described pore is taken over the big 6-10mm of outside dimension than stainless steel, and the thickness of said transition separation layer is the gap width between pore and stainless steel are taken over.
3. the welding method that a kind of stainless steel clad plate pressing pressure container casing according to claim 1 and 2 and plug-in type stainless steel are taken over, it is characterized in that: described heat treated temperature is 550 ± 10 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104150184A CN102513713A (en) | 2011-12-14 | 2011-12-14 | Welding method for stainless steel composite board pressure vessel shell and insert-type stainless steel connecting pipe |
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| CN2011104150184A CN102513713A (en) | 2011-12-14 | 2011-12-14 | Welding method for stainless steel composite board pressure vessel shell and insert-type stainless steel connecting pipe |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394874A (en) * | 2013-07-29 | 2013-11-20 | 哈尔滨电机厂有限责任公司 | Assembling and welding technique of outlet box for 1200MW-level nuclear-power half-speed turbo generator |
| CN103990913A (en) * | 2014-04-24 | 2014-08-20 | 中石化宁波工程有限公司 | Welding method for tower body and skirt seat of large-scale low-temperature tower |
| CN104174979A (en) * | 2014-09-11 | 2014-12-03 | 兰州西固热电有限责任公司 | Welding method for temperature pipe and reheat cooling section pipe |
| CN104191073A (en) * | 2014-09-11 | 2014-12-10 | 兰州西固热电有限责任公司 | Temperature tube and steam tube welding method |
| CN104191074A (en) * | 2014-09-11 | 2014-12-10 | 兰州西固热电有限责任公司 | Heterogeneous austenite system steel welding method |
| CN104227196A (en) * | 2014-09-11 | 2014-12-24 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and reheating heat section pipe |
| CN104384673A (en) * | 2014-09-11 | 2015-03-04 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and main water feeding pipe |
| CN104400239A (en) * | 2014-04-30 | 2015-03-11 | 西门子公司 | Method for welding two parts with significant difference of material characteristics |
| CN105039654A (en) * | 2015-06-13 | 2015-11-11 | 秦皇岛首秦金属材料有限公司 | Thermal treatment production method for composite board |
| CN105880815A (en) * | 2016-06-15 | 2016-08-24 | 通号轨道车辆有限公司 | Tube plate angle joint aided welding device and welding method |
| CN106112225A (en) * | 2016-08-02 | 2016-11-16 | 中国石油大学(华东) | A kind of Nozzle Zone of Vessels reducing welding residual stress and end socket method of attachment |
| CN106181093A (en) * | 2016-08-23 | 2016-12-07 | 山西阳煤化工机械（集团）有限公司 | A kind of rustless steel adapter D class welding point exempt from heat treatment welding method |
| CN107398688A (en) * | 2017-09-15 | 2017-11-28 | 四川石油天然气建设工程有限责任公司 | A kind of multiple tube instrument mouth perforate and welding method |
| 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 |
| CN109722525A (en) * | 2019-02-20 | 2019-05-07 | 中国石油大学(华东) | A method to reduce the risk of weld cracking during post-weld heat treatment of large insert plates of super-large pressure vessels |
| CN109773419A (en) * | 2018-12-19 | 2019-05-21 | 鲁西工业装备有限公司 | A kind of welding method of 30mm or more slab container casing and flange |
| CN111716030A (en) * | 2020-05-27 | 2020-09-29 | 共享铸钢有限公司 | Combined welding method for austenitic stainless steel structural member and low-alloy steel casting |
| CN112338434A (en) * | 2020-09-27 | 2021-02-09 | 中国石油天然气集团有限公司 | Delayed-cracking-resistant high-strength B-type sleeve fillet welding method |
| CN112548388A (en) * | 2020-12-01 | 2021-03-26 | 湖南省特种设备检验检测研究院湘潭分院 | Welding method for thick-wall composite plate and small-diameter pipe of container |
| 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 |
| CN113833970A (en) * | 2021-10-18 | 2021-12-24 | 天津市宁河县隆昌异型轧钢厂 | Special-shaped cladding profile |
| CN114749821A (en) * | 2022-05-25 | 2022-07-15 | 武汉中谷联创光电科技股份有限公司 | Welding method |
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Cited By (30)
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| CN103394874A (en) * | 2013-07-29 | 2013-11-20 | 哈尔滨电机厂有限责任公司 | Assembling and welding technique of outlet box for 1200MW-level nuclear-power half-speed turbo generator |
| CN103394874B (en) * | 2013-07-29 | 2016-02-10 | 哈尔滨电机厂有限责任公司 | 1200MW level nuclear power Half Speed steam turbine generator outlet box erection welding process |
| CN103990913A (en) * | 2014-04-24 | 2014-08-20 | 中石化宁波工程有限公司 | Welding method for tower body and skirt seat of large-scale low-temperature tower |
| CN103990913B (en) * | 2014-04-24 | 2016-07-06 | 中石化宁波工程有限公司 | The tower body of a kind of large-scale low-temperature tower and the welding method of skirt |
| CN104400239A (en) * | 2014-04-30 | 2015-03-11 | 西门子公司 | Method for welding two parts with significant difference of material characteristics |
| CN104400239B (en) * | 2014-04-30 | 2017-05-10 | 西门子公司 | Method for welding two parts with significant difference of material characteristics |
| CN104174979A (en) * | 2014-09-11 | 2014-12-03 | 兰州西固热电有限责任公司 | Welding method for temperature pipe and reheat cooling section pipe |
| CN104191073A (en) * | 2014-09-11 | 2014-12-10 | 兰州西固热电有限责任公司 | Temperature tube and steam tube welding method |
| CN104191074A (en) * | 2014-09-11 | 2014-12-10 | 兰州西固热电有限责任公司 | Heterogeneous austenite system steel welding method |
| CN104227196A (en) * | 2014-09-11 | 2014-12-24 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and reheating heat section pipe |
| CN104384673A (en) * | 2014-09-11 | 2015-03-04 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and main water feeding pipe |
| CN105039654B (en) * | 2015-06-13 | 2017-03-01 | 秦皇岛首秦金属材料有限公司 | A kind of heat treatment production method of composite plate |
| CN105039654A (en) * | 2015-06-13 | 2015-11-11 | 秦皇岛首秦金属材料有限公司 | Thermal treatment production method for composite board |
| CN105880815A (en) * | 2016-06-15 | 2016-08-24 | 通号轨道车辆有限公司 | Tube plate angle joint aided welding device and welding method |
| CN106112225B (en) * | 2016-08-02 | 2018-07-06 | 中国石油大学(华东) | A kind of Nozzle Zone of Vessels for reducing welding residual stress and end socket connection method |
| CN106112225A (en) * | 2016-08-02 | 2016-11-16 | 中国石油大学(华东) | A kind of Nozzle Zone of Vessels reducing welding residual stress and end socket method of attachment |
| CN106181093A (en) * | 2016-08-23 | 2016-12-07 | 山西阳煤化工机械（集团）有限公司 | A kind of rustless steel adapter D class welding point exempt from heat treatment welding method |
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| CN107398688B (en) * | 2017-09-15 | 2019-03-26 | 四川石油天然气建设工程有限责任公司 | A kind of multiple tube instrument mouth aperture and welding method |
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| CN109773419A (en) * | 2018-12-19 | 2019-05-21 | 鲁西工业装备有限公司 | A kind of welding method of 30mm or more slab container casing and flange |
| CN109722525A (en) * | 2019-02-20 | 2019-05-07 | 中国石油大学(华东) | A method to reduce the risk of weld cracking during post-weld heat treatment of large insert plates of super-large pressure vessels |
| CN111716030A (en) * | 2020-05-27 | 2020-09-29 | 共享铸钢有限公司 | Combined welding method for austenitic stainless steel structural member and low-alloy steel casting |
| CN111716030B (en) * | 2020-05-27 | 2022-02-22 | 共享铸钢有限公司 | Combined welding method for austenitic stainless steel structural member and low-alloy steel casting |
| CN112338434A (en) * | 2020-09-27 | 2021-02-09 | 中国石油天然气集团有限公司 | Delayed-cracking-resistant high-strength B-type sleeve fillet welding method |
| 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 |
| CN112548388A (en) * | 2020-12-01 | 2021-03-26 | 湖南省特种设备检验检测研究院湘潭分院 | Welding method for thick-wall composite plate and small-diameter pipe of container |
| CN113833970A (en) * | 2021-10-18 | 2021-12-24 | 天津市宁河县隆昌异型轧钢厂 | Special-shaped cladding profile |
| CN114749821A (en) * | 2022-05-25 | 2022-07-15 | 武汉中谷联创光电科技股份有限公司 | Welding method |
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Application publication date: 20120627 |