CN105215565A - The docking calculation that the nuclear power generating equipment low-alloy steel of limited space and stainless steel are taken over - Google Patents
The docking calculation that the nuclear power generating equipment low-alloy steel of limited space and stainless steel are taken over Download PDFInfo
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- CN105215565A CN105215565A CN201510769551.9A CN201510769551A CN105215565A CN 105215565 A CN105215565 A CN 105215565A CN 201510769551 A CN201510769551 A CN 201510769551A CN 105215565 A CN105215565 A CN 105215565A
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- welding
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- separation layer
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses the docking calculation that a kind of nuclear power generating equipment low-alloy steel of limited space and stainless steel are taken over, it comprises following steps: step 1, takes over built-up welding separation layer in advance respectively to low alloy steel, stainless steel; Step 2, carries out checkout to the separation layer of built-up welding in advance; Step 3, to separation layer processing butting grooves, and adopts Special frock device to carry out assembling and regulating; Step 4, is adopted the automatic GTAW soldering method of all positon to carry out butt welding, is followed the tracks of in welding process by positioning tool Real-Time Monitoring; Step 5, carries out Non-Destructive Testing after having welded.Method provided by the invention comprises assembling, welding, measurement, a whole set of manufacture process of visual and dimensional gaughing, nondestructive inspection (NDI) etc., can ensure the welding quality of banjo fixing butt jointing, reduce welding deformation, meet matching requirements.
Description
Technical field
The invention belongs to the solder technology of nuclear power generating equipment, relate to a kind of welding method, specifically, relate to the low-alloy steel of the nuclear power generating equipment be obstructed in a kind of locus and the docking calculation of stainless steel adapter foreign material.
Background technology
Nuclear steam generator housing 1 manufacture is terminated and after the water pressure test, is also needed to be connected with reactor coolant main pump pump case 4 discharge connection 3 of water chamber head 2.The material of described water chamber head discharge connection 3 is low-alloy steel, and the material of main pump pump case 4 is stainless steel.According to the design feature of product, water chamber head discharge connection 3 and main pump pump case 4 only can carry out when steam generator shell is horizontal assembling and welding, and there are certain matching requirements position between the two, main pump pump case nipple 5 center to water chamber head lower support platform 6 has certain linearity distance size L restriction (as shown in Figure 1a), main pump casing outlet 7 end center line and water chamber head 90 ° of-270 ° of center lines have certain angle α to limit, and see shown in Fig. 1 b.Because welding space is restricted, and the more about 140mm of both joint thickness, welding needs to consider matching requirements simultaneously, welding difficulty is very large, need to provide a whole set of to comprise the manufacturing technology of the whole processes such as assembling, welding, measurement, nondestructive inspection (NDI), the welding quality of banjo fixing butt jointing 8 can be ensured, reduce welding deformation, meet both matching requirements.
Summary of the invention
Object of the present invention provides a kind of limited location and the higher low-alloy steel adapter of matching requirements to be taken over stainless steel and docked manufacture method, the welding quality of banjo fixing butt jointing can be ensured, reduce welding deformation, meet both matching requirements, the docking of the foreign material of the nuclear power generating equipment of limited space can be used for.
For achieving the above object, the invention provides the docking calculation that a kind of nuclear power generating equipment low-alloy steel of limited space and stainless steel are taken over, it comprises following steps:
Step 1, takes over built-up welding separation layer in advance to low alloy steel, stainless steel respectively;
Step 2, carries out checkout to the separation layer of built-up welding in advance;
Step 3, to separation layer processing butting grooves, and adopts Special frock device to carry out assembling and regulating;
Step 4, is adopted the automatic GTAW soldering method of all positon to carry out butt welding, is followed the tracks of in welding process by positioning tool Real-Time Monitoring;
Step 5, carries out Non-Destructive Testing after having welded.
Above-mentioned method, wherein, the checkout described in step 1 refers to visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X.
Above-mentioned method, wherein, the butting grooves described in step 3 adopts double groove form, so that carry out two-sided alternately welding.
Above-mentioned method, wherein, in step 4, described butt welding adopts two-sided alternately welding manner to carry out.
Above-mentioned method, wherein, the butt-welding process in step 4 comprises:
Step 4.1, spot welding is carried out in butt weld: the weld seam of the some length of some symmetric position place crossed-symmetrical spot welding on circumferential weld;
Step 4.2, adopts the automatic GTAW butt welding method of all positon to carry out the outer groove Nickel-based Alloy Welding of joint, and Real-Time Monitoring;
Step 4.3, carries out joint internal groove back chipping, inspection;
Step 4.4, adopts the automatic GTAW butt welding method of all positon to carry out joint internal groove Nickel-based Alloy Welding.
Above-mentioned method, wherein, in described step 4.2, the per pass weld seam welded carries out polishing and clearing up, and every three layers of weld seam carry out liquid penetrant inspection.
Above-mentioned method, wherein, in described step 4.3, back chipping mode is manual grinder buffing or the direct back chipping of special back chipping.
Above-mentioned method, wherein, in described step 4.3, the inspection carried out after back chipping is liquid penetrant inspection.
Above-mentioned method, wherein, in described step 4.4, the per pass weld seam welded carries out polishing and clearing up, and every three layers of weld seam carry out liquid penetrant inspection.
Above-mentioned method, wherein, the Real-Time Monitoring in described step 4 is followed the tracks of and is referred in welding process, carry out several times straight line degree measurement and angular surveying; Preferably, described straight line degree measurement adopts laserscope and laser pickoff to carry out, and described angular surveying adopts laser tracker to carry out.
Above-mentioned method, wherein, the Non-Destructive Testing in described step 5 refers to visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X.
If low-alloy steel adapter and stainless steel adapter are directly welded, then banjo fixing butt jointing needs to carry out post weld heat treatment operation, and easily produces weld defect when adopting nickel-base alloy packing material to carry out direct butt welding.For avoiding performing post weld heat treatment operation, at low-alloy steel adapter side end face built-up welding nickel-base alloy barrier layer in advance, at stainless steel adapter side end face built-up welding stainless steel separation layer in advance.Because joint thickness is larger, the locus of butt welding is restricted, easily distortion is produced in welding process, banjo fixing butt jointing adopts the form of double groove, all positon automatic GTAW soldering method is adopted to carry out two-sided alternately welding, laser tracker, laserscope and laser pickoff is adopted to carry out monitored over time tracking in welding process, measure linearity and Angular Dimension, and feed back welding deformation situation, reduce welding deformation amount according to deformation adjustment welding parameter and welding sequence, ensure adapter matching requirements.
Method provided by the invention can ensure the welding quality of banjo fixing butt jointing, reduces welding deformation, meets matching requirements.
Accompanying drawing explanation
Fig. 1 a is that low-alloy steel of the present invention is taken over stainless steel the linearity welded and required schematic diagram.
Fig. 1 b is that low-alloy steel of the present invention takes over stainless steel the angle requirement schematic diagram welded.
Fig. 2 is the process chart of the docking calculation that the nuclear power generating equipment low-alloy steel of limited space of the present invention and stainless steel are taken over.
Detailed description of the invention
The docking calculation that the nuclear power generating equipment low-alloy steel of limited space provided by the invention and stainless steel are taken over comprises following steps, as shown in Figure 2:
Step 1(S1), respectively built-up welding separation layer is in advance taken over to low alloy steel, stainless steel;
Step 2(S2), checkout is carried out to the separation layer of built-up welding in advance;
Step 3(S3), to separation layer processing butting grooves, and adopt Special frock device to carry out assembling and regulating;
Step 4(S4), adopt the automatic GTAW soldering method of all positon to carry out butt welding, followed the tracks of by positioning tool Real-Time Monitoring in welding process;
Step 5(S5), carry out Non-Destructive Testing after having welded.
Docking calculation of the present invention is the welding quality ensureing joint, before the adapter of water chamber head low-alloy steel is connected with the adapter of main pump pump case stainless steel, respectively at low-alloy steel adapter side end face built-up welding nickel-base alloy barrier layer in advance, at stainless steel adapter side end face built-up welding stainless steel separation layer in advance, then adopt Special frock device to carry out assembling after both separation layer processing butting grooves and regulate.Welding space is restricted, and adopts the automatic GTAW of all positon (GasTungstenArcWeld, Gas Tungsten Arc Welding) method of welding to carry out joint butt welding after assembling.Because joint thickness is comparatively large, butting grooves adopts double groove form, carries out two-sided alternately welding.For both guarantees fitted position requirement, laser tracker is adopted to carry out angular surveying in welding process, laserscope and laser pickoff is adopted to carry out straight line degree measurement, and Real-Time Monitoring is followed the tracks of, measured and feed back welding deformation situation in welding process, according to deformation adjustment welding sequence and welding parameter etc.After whole welding completes, carry out nondestructive inspection (NDI).
Technical scheme of the present invention is described in detail below in conjunction with embodiment.
The water chamber head discharge connection of nuclear steam generator and the connection of reactor coolant main pump pump case are carried out in the following order:
1. low-alloy steel adapter side end face built-up welding nickel-base alloy barrier layer in advance;
2. pair nickel-base alloy barrier layer carries out visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X;
3. stainless steel adapter side end face built-up welding stainless steel separation layer in advance;
4. pair stainless steel separation layer carries out visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X;
5. separation layer machined butting grooves both, groove adopts double groove form;
6. visual and dimensional gaughing, liquid penetrant inspection are carried out in separation layer machined groove side both;
7. on main pump pump case, water chamber head and steam generator shell, positioning tool is installed, is convenient to the real-time deformation monitoring that laserscope and laser pickoff carry out in straight line degree measurement and welding process;
8. lift stainless steel pump case, pump case is placed on special support with adjustable, carries out groove Butt Assembling with water chamber head discharge connection, after assembling, carry out visual and dimensional gaughing.Special carrier can carry out the axial fine setting of XYZ tri-, meets the high-precision matching requirements of product.Adopt laserscope and laser pickoff to carry out straight line degree measurement after assembling, adopt laser tracker to carry out angular surveying;
9. spot welding is carried out in butt weld: the weld seam of some symmetric position place crossed-symmetrical spot welding certain lengths on circumferential weld; Again carry out visual and dimensional gaughing after spot welding completes, and (the same step 8) of method, meets both fitted positions to carry out straight line degree measurement and angular surveying;
10. stainless steel adapter is upper near butting grooves side erecting and welding guide rail and welding head;
11. first carry out the outer groove Nickel-based Alloy Welding of joint, and welding method adopts the automatic GTAW butt welding method of all positon.In welding process, per pass weld seam carries out polishing and clearing up, and every three layers of weld seam carry out liquid penetrant inspection.(the same step 8) of method, and adopt laserscope and laser pickoff Real-Time Monitoring joint distortion situation in welding process, welds the depth of weld of outer groove depending on deformation repeatedly to carry out straight line degree measurement and angular surveying in welding process;
12. carry out joint internal groove back chipping, and back chipping mode is manual grinder buffing or the direct back chipping of special back chipping;
After 13. back chippings, liquid penetrant inspection is carried out to internal groove;
14. carry out joint internal groove Nickel-based Alloy Welding, and welding method adopts the automatic GTAW butt welding method of all positon.In welding process, per pass weld seam carries out polishing and clearing up, and every three layers of weld seam carry out liquid penetrant inspection.(the same step 8) of method, and adopt laserscope and laser pickoff Real-Time Monitoring joint distortion situation in welding process, welds the depth of weld of internal groove depending on deformation repeatedly to carry out straight line degree measurement and angular surveying in welding process;
15. in the outer groove welding of execution and internal groove welding process, according to joint distortion situation and linearity and the angular surveying situation of monitoring, determines the alternately welding sequence of inside and outside groove, and determines whether to need adjustment welding parameter;
16. welded after, visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X are carried out to whole joint.
Method provided by the invention comprises assembling, welding, measurement, a whole set of manufacture process of visual and dimensional gaughing, nondestructive inspection (NDI) etc., can ensure the welding quality of banjo fixing butt jointing, reduce welding deformation, meet matching requirements.
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. the docking calculation taken over of the nuclear power generating equipment low-alloy steel of limited space and stainless steel, it is characterized in that, the method comprises following steps:
Step 1, takes over built-up welding separation layer in advance to low alloy steel, stainless steel respectively;
Step 2, carries out checkout to the separation layer of built-up welding in advance;
Step 3, to separation layer processing butting grooves, and adopts Special frock device to carry out assembling, regulating;
Step 4, is adopted the automatic GTAW soldering method of all positon to carry out butt welding, is followed the tracks of in welding process by positioning tool Real-Time Monitoring;
Step 5, carries out Non-Destructive Testing after having welded.
2. the method for claim 1, is characterized in that, the checkout described in step 2 refers to visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X.
3. the method for claim 1, is characterized in that, the butting grooves described in step 3 is double groove form, so that carry out two-sided alternately welding.
4. the method for claim 1, is characterized in that, in step 4, described butt welding adopts two-sided alternately welding manner to carry out.
5. the method for claim 1, is characterized in that, the butt-welding process in step 4 comprises:
Step 4.1, spot welding is carried out in butt weld: the weld seam of the some length of some symmetric position place crossed-symmetrical spot welding on circumferential weld;
Step 4.2, adopts the automatic GTAW butt welding method of all positon to carry out the outer groove Nickel-based Alloy Welding of joint, and Real-Time Monitoring;
Step 4.3, carries out joint internal groove back chipping, inspection;
Step 4.4, adopts the automatic GTAW butt welding method of all positon to carry out joint internal groove Nickel-based Alloy Welding, and Real-Time Monitoring.
6. method as claimed in claim 5, it is characterized in that, in described step 4.2, the per pass weld seam welded carries out polishing and clearing up, and every three layers of weld seam carry out liquid penetrant inspection.
7. method as claimed in claim 5, it is characterized in that, in described step 4.3, back chipping mode is manual grinder buffing or the direct back chipping of special back chipping; The inspection carried out after back chipping is liquid penetrant inspection.
8. method as claimed in claim 5, it is characterized in that, in described step 4.4, the per pass weld seam welded carries out polishing and clearing up, and every three layers of weld seam carry out liquid penetrant inspection.
9. the method for claim 1, is characterized in that, the Real-Time Monitoring in described step 4 is followed the tracks of and referred in welding process, carry out several times straight line degree measurement and angular surveying.
10. method as claimed in claim 5, is characterized in that, the Non-Destructive Testing in described step 5 refers to visual and dimensional gaughing, liquid penetrant inspection, ultrasonic examination and radiological survey X.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769551.9A CN105215565A (en) | 2015-11-12 | 2015-11-12 | The docking calculation that the nuclear power generating equipment low-alloy steel of limited space and stainless steel are taken over |
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| CN201510769551.9A CN105215565A (en) | 2015-11-12 | 2015-11-12 | The docking calculation that the nuclear power generating equipment low-alloy steel of limited space and stainless steel are taken over |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945393A (en) * | 2016-07-15 | 2016-09-21 | 中国核动力研究设计院 | Surfacing repair method for dissimilar metal pipeline of safety end of voltage stabilizer in nuclear power station |
| CN106735725A (en) * | 2016-12-21 | 2017-05-31 | 上海电气核电设备有限公司 | Adapter pump case dissimilar metal all-position welding method |
| CN112059465A (en) * | 2020-09-30 | 2020-12-11 | 上海电气核电设备有限公司 | Connecting structure for reactor container and welding process |
| CN113878309A (en) * | 2021-10-11 | 2022-01-04 | 宜昌船舶柴油机有限公司 | Combined machining process for connecting pipe diffuser and connecting pipe fixing ring of gas turbine |
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| CN1947913A (en) * | 2006-11-09 | 2007-04-18 | 上海锅炉厂有限公司 | Narrow-gap all position pusle automatic argon arc welding technique for dissimillar nicklel-based alloys |
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| JPS5554293A (en) * | 1978-10-17 | 1980-04-21 | Toshiba Corp | Assembling method of nuclear fuel rod |
| CN1947913A (en) * | 2006-11-09 | 2007-04-18 | 上海锅炉厂有限公司 | Narrow-gap all position pusle automatic argon arc welding technique for dissimillar nicklel-based alloys |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945393A (en) * | 2016-07-15 | 2016-09-21 | 中国核动力研究设计院 | Surfacing repair method for dissimilar metal pipeline of safety end of voltage stabilizer in nuclear power station |
| CN106735725A (en) * | 2016-12-21 | 2017-05-31 | 上海电气核电设备有限公司 | Adapter pump case dissimilar metal all-position welding method |
| CN106735725B (en) * | 2016-12-21 | 2019-02-05 | 上海电气核电设备有限公司 | Adapter tube-pump case dissimilar metal all-position welding method |
| CN112059465A (en) * | 2020-09-30 | 2020-12-11 | 上海电气核电设备有限公司 | Connecting structure for reactor container and welding process |
| CN113878309A (en) * | 2021-10-11 | 2022-01-04 | 宜昌船舶柴油机有限公司 | Combined machining process for connecting pipe diffuser and connecting pipe fixing ring of gas turbine |
| CN113878309B (en) * | 2021-10-11 | 2024-03-08 | 宜昌船舶柴油机有限公司 | Combined machining process for gas turbine connecting pipe diffuser connecting pipe fixing ring |
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Application publication date: 20160106 |