CN105195869A - Nickel-base welding wire dissimilar metal cold wire TIG all-position welding method - Google Patents
Nickel-base welding wire dissimilar metal cold wire TIG all-position welding method Download PDFInfo
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- CN105195869A CN105195869A CN201510769142.9A CN201510769142A CN105195869A CN 105195869 A CN105195869 A CN 105195869A CN 201510769142 A CN201510769142 A CN 201510769142A CN 105195869 A CN105195869 A CN 105195869A
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- adapter
- welding
- primary device
- nuclear island
- device pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- 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
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
- B23K9/232—Arc welding or cutting taking account of the properties of the materials to be welded of different metals
-
- 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
- B23K2103/18—Dissimilar materials
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a nickel-base welding wire dissimilar metal cold wire TIG all-position welding method used in a welding process of a connection pipe of a main device pressure container in a nuclear island and a connection pipe safety end, and comprising the steps: pre-processing a plurality of to-be-welded connection pipes of the main device pressure container in the nuclear island and the corresponding connection pipe safety ends; and randomly selecting the plurality of to-be-welded connection pipes of the main device pressure container in the nuclear island and the corresponding connection pipe safety ends for performing all-position welding butting joint simultaneously so as to finish the welding of the connection pipes of the main device pressure container in the nuclear island and the corresponding connection pipe safety ends. According to the method disclosed by the invention, the welding period is short, and welding defects of air holes, slag inclusion, non-fusing and the like can be effectively avoided simultaneously.
Description
Technical field
The present invention relates to a kind of solder technology, be specifically related to a kind of nickel-based welding wire dissimilar metal cold silk TIG all-position welding method, in the adapter of nuclear island primary device pressure vessel and the welding process of adapter safe end.
Background technology
In prior art, the housing of the reactor pressure vessel in AP1000 type or Hua Longyi types of nuclear power station is generally that SA508Gr.3Cl.1 or 16MND5 low-alloy steel is made by material model, and the various pipelines be connected with nuclear vessel are mostly austenitic stainless steel 316 L or Z2CND18-12(controls nitrogen).For ensureing the quality of nuclear power generating equipment, generally first can first weld the preceding paragraph stainless steel tube (being called " safe end ") in the adapter of nuclear vessel housing, again safe end being welded with stainless steel pipes when installing at the scene.Therefore, said process just relates to the solder technology of nuclear vessel connecting pipe of shell and safe end dissimilar metal joint.
Nowadays, China is in the fast-developing period of Construction of Nuclear Electricity, and therefore the problem of the welding of equipment adapter safe end nickel-based welding wire such as AP1000 type or Hua Longyi type reaction core pressure vessel also produces.According to nuclear equipment safe class and structure design characteristic, weld with stainless steel safe end again after AP100 type or the adapter of Hua Longyi type pressure container can carry out buttering in advance, existing adapter safe end nickel-based welding wire solder technology mainly comprises several as follows: adopt manual covered-electrode welding or automatic (pulse) argon arc welding of tungsten to buttering, welding position downhand welding or horizontal position welding; Docking technique adopts manual covered-electrode welding or submerged-arc welding automatic welding or automatic pulsed tungsten argon arc welding, and welding position is downhand welding or horizontal position welding.But, above-mentioned prior art not only the cycle long, and in actual mechanical process, the weld defect such as also easily occur pore, slag inclusion and do not merge, therefore, at present in the urgent need to improving this type of solder technology.
Summary of the invention
The object of the present invention is to provide a kind of nickel-based welding wire dissimilar metal cold silk TIG all-position welding method, welding interval is short, the weld defect such as effectively can avoid occurring pore, slag inclusion and do not merge simultaneously.
In order to achieve the above object, the present invention is achieved through the following technical solutions: a kind of nickel-based welding wire dissimilar metal cold silk TIG all-position welding method, for in the adapter of nuclear island primary device pressure vessel and the welding process of adapter safe end, be characterized in, this welding method comprises following steps:
The adapter of several nuclear island primary device pressure vessels to be welded of respective pretreatment and the adapter safe end of correspondence;
The adapter of several nuclear island primary device pressure vessels to be welded of any selection carries out all position welding docking with corresponding adapter safe end simultaneously, completes the adapter of nuclear island primary device pressure vessel and welding of adapter safe end.
The step of the adapter completing several nuclear island primary device pressure vessels to be welded pretreated being carried out post weld heat treatment was also comprised before carrying out all position welding docking.
Described nuclear island primary device pressure vessel is AP1000 type or Hua Longyi type.
The groove of the adapter safe end of the adapter after pretreatment completes and correspondence is single groove form, and wherein, the step of the adapter of pretreatment nuclear island primary device pressure vessel to be welded comprises:
A, inner wall overlaying stainless steel anticorrosion layer in the adapter of nuclear island primary device pressure vessel to be welded;
B, port built-up welding nickel-base alloy anticorrosion layer in the adapter of nuclear island primary device pressure vessel to be welded;
C, the Ni-based separation layer of end face built-up welding in the adapter of nuclear island primary device pressure vessel to be welded.
Described steps A specifically comprises:
The inwall of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The inwall of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing width range is 25 ~ 60mm, and thickness range is that the inwall of stainless steel to the adapter of nuclear island primary device pressure vessel to be welded of 0.4mm ~ 0.6mm carries out built-up welding, forms stainless steel anticorrosion layer.
Manual welding technique is adopted to carry out built-up welding nickel-base alloy anticorrosion layer in described step B;
Cold silk TIG technique is adopted to carry out the Ni-based separation layer of built-up welding in described step C.
Described step B specifically comprises:
The port of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The port of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing welding material is ENiCrFe-7, and specification is that the port of welding rod to the adapter of nuclear island primary device pressure vessel to be welded of Φ 4.0mm carries out built-up welding, forms nickel-base alloy anticorrosion layer.
Described step C specifically comprises:
The end face of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The end face of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing welding material is ERNiCrFe-7 or ERNiCrFe-7A, and specification is that the end face of welding wire to the adapter of nuclear island primary device pressure vessel to be welded of Φ 0.8 ~ Φ 1.6mm carries out built-up welding, forms Ni-based separation layer.
The adapter of several nuclear island primary device pressure vessels to be welded of described any selection carries out all position welding docking with corresponding adapter safe end simultaneously, specifically comprises:
Respectively the Ni-based separation layer of the adapter end face of nuclear island primary device pressure vessel to be welded and the weld seam of corresponding adapter safe end are cleared up;
Employing welding material is ERNiCrFe-7 or ERNiCrFe-7A, specification is that the weld seam of welding wire to the Ni-based separation layer of the adapter end face of nuclear island primary device pressure vessel to be welded and corresponding adapter safe end of Φ 0.8 ~ Φ 1.6mm carries out all positon butt welding, completes the adapter of nuclear island primary device pressure vessel and welding of adapter safe end.
The quantity of described nuclear island primary device Nozzle Zone of Vessels is more than or equal to 3.
A kind of nickel-based welding wire dissimilar metal cold silk TIG all-position welding method of the present invention compared with prior art has the following advantages: because the adapter groove of nuclear island primary device pressure vessel and the groove of adapter safe end are processed into single groove form, and adopt cold silk TIG all-position welding, while the welding quality of nickel-base alloy type safety end structure can be guaranteed, greatly reduce welding interval, thus establish solid foundation for completing of guaranteeing both quality and quantity of nuclear island primary device pressure vessel.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of nickel-based welding wire of the present invention dissimilar metal cold silk TIG all-position welding method;
Fig. 2 is the adapter distribution map of nuclear island primary device pressure vessel in embodiment;
Fig. 3 is that the A-A of Fig. 2 is to sectional view;
Fig. 4 is that the adapter of nuclear island primary device pressure vessel docks rear schematic diagram with corresponding adapter safe end.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1, a kind of nickel-based welding wire dissimilar metal cold silk TIG all-position welding method, for in the adapter of nuclear island primary device pressure vessel and the welding process of adapter safe end, nuclear island primary device pressure vessel is the nuclear island primary device pressure vessel of AP1000 type or Hua Longyi type in the present embodiment, and this welding method comprises following steps:
The adapter of several nuclear island primary device pressure vessels to be welded of S1, respective pretreatment and the adapter safe end of correspondence;
S3, the arbitrarily adapter of several nuclear island primary device pressure vessels to be welded of selection carry out all position welding docking with corresponding adapter safe end simultaneously, complete the adapter of nuclear island primary device pressure vessel and welding of adapter safe end.
In the present embodiment, in step S1 and step S3, also comprise a step S2,
S2, post weld heat treatment is carried out in the adapter completing several nuclear island primary device pressure vessels to be welded pretreated.
In the present embodiment, pretreatment complete after adapter and the groove of adapter safe end of correspondence be single groove form.
The step of the adapter of pretreatment nuclear island primary device pressure vessel to be welded comprises:
A, inner wall overlaying stainless steel anticorrosion layer in the adapter of nuclear island primary device pressure vessel to be welded.
Steps A specifically comprises:
The inwall of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The inwall of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing width range is 25 ~ 60mm, and thickness range is that the inwall of stainless steel to the adapter of nuclear island primary device pressure vessel to be welded of 0.4mm ~ 0.6mm carries out built-up welding, forms stainless steel anticorrosion layer.
B, port built-up welding nickel-base alloy anticorrosion layer in the adapter of nuclear island primary device pressure vessel to be welded.
Step B specifically comprises:
The port of the adapter of nuclear island primary device pressure vessel to be welded is cleared up, mainly clears up the dirt that the oil on port, rust oxide etc. affect welding quality;
The port of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing welding material is ENiCrFe-7, and specification is that the port of welding rod to the adapter of nuclear island primary device pressure vessel to be welded of Φ 4.0mm carries out built-up welding, forms nickel-base alloy anticorrosion layer.
In the present embodiment, preferably, manual welding technique is adopted to carry out built-up welding nickel-base alloy anticorrosion layer in described step B.
C, the Ni-based separation layer of end face built-up welding in the adapter of nuclear island primary device pressure vessel to be welded.
Step C specifically comprises:
The end face of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The end face of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing welding material is ERNiCrFe-7 or ERNiCrFe-7A, and specification is that the end face of welding wire to the adapter of nuclear island primary device pressure vessel to be welded of Φ 0.8 ~ Φ 1.6mm carries out built-up welding, forms Ni-based separation layer.
In the present embodiment, preferably, cold silk TIG technique is adopted to carry out the Ni-based separation layer of built-up welding in step C.
Described step S3 specifically comprises:
Respectively the Ni-based separation layer of the adapter end face of nuclear island primary device pressure vessel to be welded and the weld seam of corresponding adapter safe end are cleared up;
Employing welding material is ERNiCrFe-7 or ERNiCrFe-7A, specification is that the weld seam of welding wire to the Ni-based separation layer of the adapter end face of nuclear island primary device pressure vessel to be welded and corresponding adapter safe end of Φ 0.8 ~ Φ 1.6mm carries out all positon butt welding, completes the adapter of nuclear island primary device pressure vessel and welding of adapter safe end.
As shown in Figures 2 and 3, in Fig. 2,200 is nuclear island primary device pressure vessel, and 201 ~ 206 is adapter, and in Fig. 3,300 is nuclear island primary device pressure vessel, and 301 ~ 302 is adapter.
As shown in Figure 2, in some embodiments of the invention, 2 can be selected to weld simultaneously, when welding at the same time, the adapter of simultaneously welding can be chosen arbitrarily, not need positional symmetry, any two in 201 ~ 206 can be selected.
As shown in Figure 2, can select to weld 3 in other embodiment of the present invention simultaneously, any three in 201 ~ 206 can be chosen arbitrarily.
In like manner, as shown in Figure 2, in other preferred embodiment, can select to weld 4 or 5, adapter position can be selected arbitrarily simultaneously.
As shown in Figure 2, in a preferred embodiment of the invention, while taking into account efficiency, select to weld 6 adapters simultaneously.
As shown in Figure 4, butt tube 400 carries out groove welding respectively, at adapter 400 inner wall overlaying stainless steel anticorrosion layer 401, at adapter 400 port built-up welding nickel-base alloy anticorrosion layer 402, at the Ni-based separation layer 403 of adapter 400 end face built-up welding, namely the Ni-based separation layer 403 of adapter 400 end face all adopts single groove form with the groove of adapter safe end 500.After the bevel design completing adapter 400, post weld heat treatment is carried out to it, butt tube 400 carries out butt welding with the weld seam 501 of adapter safe end 500 afterwards, namely assemble six automatic All-position auto-TIG welding machines at whole 6 adapter 400 places simultaneously, the Ni-based separation layer 403 of end face can implementing six adapters 400 welds with the weld seam 501 of safe end 500 simultaneously, and 600 in Fig. 4 represents the back chipping line after butt welding.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a nickel-based welding wire dissimilar metal cold silk TIG all-position welding method, in the adapter of nuclear island primary device pressure vessel and the welding process of adapter safe end, it is characterized in that, this welding method comprises following steps:
The adapter of several nuclear island primary device pressure vessels to be welded of respective pretreatment and the adapter safe end of correspondence;
The adapter of several nuclear island primary device pressure vessels to be welded of any selection carries out all position welding docking with corresponding adapter safe end simultaneously, completes the adapter of nuclear island primary device pressure vessel and welding of adapter safe end.
2. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 1, it is characterized in that, before carrying out all position welding docking, also comprise the step of the adapter completing several nuclear island primary device pressure vessels to be welded pretreated being carried out post weld heat treatment.
3. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 1, it is characterized in that, described nuclear island primary device pressure vessel is AP1000 type or Hua Longyi type.
4. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 1, it is characterized in that, the groove of the adapter safe end of the adapter after pretreatment completes and correspondence is single groove form, and wherein, the step of the adapter of pretreatment nuclear island primary device pressure vessel to be welded comprises:
A, inner wall overlaying stainless steel anticorrosion layer in the adapter of nuclear island primary device pressure vessel to be welded;
B, port built-up welding nickel-base alloy anticorrosion layer in the adapter of nuclear island primary device pressure vessel to be welded;
C, the Ni-based separation layer of end face built-up welding in the adapter of nuclear island primary device pressure vessel to be welded.
5. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 4, it is characterized in that, described steps A specifically comprises:
The inwall of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The inwall of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing width range is 25 ~ 60mm, and thickness range is that the inwall of stainless steel to the adapter of nuclear island primary device pressure vessel to be welded of 0.4mm ~ 0.6mm carries out built-up welding, forms stainless steel anticorrosion layer.
6. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 4, is characterized in that, adopt manual welding technique to carry out built-up welding nickel-base alloy anticorrosion layer in described step B;
Cold silk TIG technique is adopted to carry out the Ni-based separation layer of built-up welding in described step C.
7. the nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as described in claim 4 or 6, it is characterized in that, described step B specifically comprises:
The port of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The port of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing welding material is ENiCrFe-7, and specification is that the port of welding rod to the adapter of nuclear island primary device pressure vessel to be welded of Φ 4.0mm carries out built-up welding, forms nickel-base alloy anticorrosion layer.
8. the nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as described in claim 4 or 6, it is characterized in that, described step C specifically comprises:
The end face of the adapter of nuclear island primary device pressure vessel to be welded is cleared up;
The end face of the adapter of nuclear island primary device pressure vessel to be welded is preheated to more than 100 DEG C;
Employing welding material is ERNiCrFe-7 or ERNiCrFe-7A, and specification is that the end face of welding wire to the adapter of nuclear island primary device pressure vessel to be welded of Φ 0.8 ~ Φ 1.6mm carries out built-up welding, forms Ni-based separation layer.
9. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 8, it is characterized in that, the adapter of several nuclear island primary device pressure vessels to be welded of described any selection carries out all position welding docking with corresponding adapter safe end simultaneously, specifically comprises:
Respectively the Ni-based separation layer of the adapter end face of nuclear island primary device pressure vessel to be welded and the weld seam of corresponding adapter safe end are cleared up;
Employing welding material is ERNiCrFe-7 or ERNiCrFe-7A, specification is that the weld seam of welding wire to the Ni-based separation layer of the adapter end face of nuclear island primary device pressure vessel to be welded and corresponding adapter safe end of Φ 0.8 ~ Φ 1.6mm carries out all positon butt welding, completes the adapter of nuclear island primary device pressure vessel and welding of adapter safe end.
10. nickel-based welding wire dissimilar metal cold silk TIG all-position welding method as claimed in claim 1, it is characterized in that, the quantity of described nuclear island primary device Nozzle Zone of Vessels is more than or equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769142.9A CN105195869A (en) | 2015-11-12 | 2015-11-12 | Nickel-base welding wire dissimilar metal cold wire TIG all-position welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510769142.9A CN105195869A (en) | 2015-11-12 | 2015-11-12 | Nickel-base welding wire dissimilar metal cold wire TIG all-position welding method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111843108A (en) * | 2020-06-29 | 2020-10-30 | 河北环境工程学院 | Head inner wall surfacing method and head inner wall scribing device applied to same |
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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 |
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| CN111843108A (en) * | 2020-06-29 | 2020-10-30 | 河北环境工程学院 | Head inner wall surfacing method and head inner wall scribing device applied to same |
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