CN108015390A - Steel containment vessel of nuclear power station automatic soldering method - Google Patents
Steel containment vessel of nuclear power station automatic soldering method Download PDFInfo
- Publication number
- CN108015390A CN108015390A CN201711328656.6A CN201711328656A CN108015390A CN 108015390 A CN108015390 A CN 108015390A CN 201711328656 A CN201711328656 A CN 201711328656A CN 108015390 A CN108015390 A CN 108015390A
- Authority
- CN
- China
- Prior art keywords
- welding
- nuclear power
- power station
- containment vessel
- soldering method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- 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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
Abstract
The invention discloses a kind of steel containment vessel of nuclear power station automatic soldering method, it comprises the following steps：1) opposed end of containment mother metal is made to form the preceding combination groove of welding, combination groove includes upper groove and lower groove, and the upper lower groove top of groove bottom connection, lower groove bottom is equipped with bottom root face；2) bottoming welding is carried out to the bottom of bottom root face and lower root face, forms root pass；3) welding is filled to lower root face and upper groove, forms filler pass；And 4) cover welding is carried out to the top of upper groove.Relative to the prior art, steel containment vessel of nuclear power station automatic soldering method of the present invention has the following advantages：The loading of welding deposited metal is small, and welding cost compares relatively low；The groove of automatic welding process can realize multilayer single-run welding, therefore welding efficiency is high, and the welding interval of per pass weld bond is relatively short；Using automatic welding process, it can reduce and welder's technical ability is relied on, improve quality stability.
Description
Technical field
The invention belongs to technical field of nuclear power, it is more particularly related to which a kind of steel containment vessel of nuclear power station is automatic
Welding method.
Background technology
Related steel containment vessel of nuclear power station diameter about 40m, highly about 65.6m, it is whole using brand-new SA738-Gr.B steel
A containment is welded by the curved plate of 260 pieces of about 44 millimeters of average thickness, and single fighter gross weight is nuclear power work up to 3359 tons
Journey builds the important module on construction key path.
At present, the butt weld of steel containment vessel of nuclear power station, scene or manufacturer use traditional stick electrode electric arc
(SMAW) technique is welded, welding job amount is extremely huge, and efficiency is low, and there are quality to be affected by human factors greatly, welding effect
The low problems of rate, cause duration progress to face larger test.
The welding of related steel containment vessel of nuclear power station uses stick electrode technology of arc welding (SMAW), its groove type
Groove is combined for X-shaped, welding uses individual layer multi-pass welding.
But there are following defect for the welding method of related steel containment vessel of nuclear power station：
The groove of welding rod arc Welding is wide, and it is big to weld the loading of deposited metal, and welding construction store doses is automatic welding
8-10 times of technique groove；
The groove type and size of welding rod arc Welding are determined when being welded, and are welded using multi-pass welding
Connect, cause welding interval relatively long；
Using the welding work amount of welding rod arc Welding is big, welding surroundings are poor and welding quality is influenced by welder's level
Greatly.
In view of this, it is necessory to provide a kind of nuclear power station steel for improving welding efficiency, reducing welding filling material
Containment automatic soldering method.
The content of the invention
Pulse melts pole gas shield argonaut welding (MIG) is first in current consumable electrode gas-arc argon arc welding in the world
Into one of welding method, it is sent into welding wire at work, by automatic wire feeding mechanism, and protective gas uses argon gas, helium or oxygen
The gases such as argon mixing, are welded according to the parameter automatically walk of setting.Compared to current nuclear power engineering generally using manual argon arc welding and
Arc welding, MIG automatic weldings can reduce thermal weld stress amount, improve appearance of weld, improve weldquality, and increase substantially
Welding efficiency (welding material deposition rate is more than 20kg/h).Pulse is also beneficial to the stirring action in molten bath to eliminate the welding such as stomata
Defect, automatic welding replace manual welding to avoid the adverse effect of human factor welding quality, and welding point is produced defect can
Energy property is effectively reduced and controlled, and is more easy to disposably obtain the high-quality welded joint for meeting nuclear safety equipment performance.
MIG is introduced into the welding of steel containment vessel in nuclear power engineering, the pulse inert gas protection electric arc of use by the present invention
Welding machine include the source of welding current, TV monitor system, remote controler, welding head, temperature control system, magnetic control system, welded rails and
Welding gun.Wherein, welding machine electric power is a kind of inverter, there is arc length to automatically control, monitor in real time, welding torch transverse swing controls, superposition
The functions such as high-frequency impulse.Pulse inert gas shielded arc welding adjustable process parameters are more, can accurately control thermal weld stress with
And the shape and size in molten bath, larger fusion penetration can be obtained with relatively low heat input, so as to reduce welding heat affected zone and weldering
Part deforms.
Analyzed based on more than, it is an object of the invention to：Welding efficiency can be improved, reduce welding filling material by providing one kind
Steel containment vessel of nuclear power station automatic soldering method.
In order to realize foregoing invention purpose, the present invention provides a kind of steel containment vessel of nuclear power station automatic soldering method, its
Comprise the following steps：
1) opposed end of containment mother metal is made to form combination groove before welding, combination groove includes upper groove and descending
Mouthful, at the top of the upper lower groove of groove bottom connection, lower groove bottom is equipped with bottom root face；
2) bottoming welding is carried out to the bottom of bottom root face and lower root face, forms root pass；
3) welding is filled to lower root face and upper groove, forms filler pass；And
4) cover welding is carried out to the top of upper groove.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, in step 1), bottom root face
Altitude range is 2.0~3.0mm, and the width range of bottom root face is 2~3.5mm, the top width scope of upper groove for 7.5~
10.5mm, lower groove top width scope are 7.0~8.0mm, and lower groove depth scope is 18~22mm.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, and in step 4), cover welding is adopted
With linear bead or weave bead.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, in step 4), from remaining weld seam
4~6mm of thickness starts, and carries out cover welding.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, and welding filling material serves as fusing
Electrode, welding filling material are solid core or flux-cored wire.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, the steel containment vessel of nuclear power station
The solderable wall thickness range of automatic soldering method is 20mm~80mm.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, the steel containment vessel of nuclear power station
Automatic soldering method is pulse melts pole gas shielded arc welding.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, in step 2) bottoming welding, weldering
The scope for connecing the voltage peak of power supply is 15V~25V, and the scope of electric current base value is 100A~150A, and the scope of current peak is
280A~350A, the base value wire feed rate of welding wire are 40~90inch/min, the peak value wire feed rate of welding wire for 170~
230inch/min, the speed of welding is 6~15inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, in step 3) filling welding, weldering
The scope for connecing the voltage peak of power supply is 20V~30V, and the scope of electric current base value is 200A~250A, and the scope of current peak is
300A~500A, the base value wire feed rate of welding wire are 60~105inch/min, the peak value wire feed rate of welding wire for 80~
140inch/min, the speed of welding is 6~15inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, in step 4) cover welding, weldering
The scope of the voltage peak of circuit closer is 18V~30V, and the scope of electric current base value is 120A~200A, and the scope of current peak is
280A~350A, the base value wire feed rate of welding wire are 30~60inch/min, the peak value wire feed rate of welding wire for 80~
120inch/min, the speed of welding is 5~8inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, and welding filling material is in wire feed mistake
Heated in journey using temperature control system, heating-up temperature is 100 DEG C -600 DEG C.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, and magnetic control system is used in welding process
System balance welding magnetic field.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, and the material of the containment is not
Become rusty steel, carbon steel or steel alloy, and the protective gas of welding is the mixed gas of helium, argon gas or oxygen and argon gas.
One kind as steel containment vessel of nuclear power station automatic soldering method of the present invention is improved, and the material of the containment is carbon
Silico-manganese steel, the protective gas are argon gas and oxygen mixed gas.
Relative to the prior art, steel containment vessel of nuclear power station automatic soldering method of the present invention has the following advantages：
The loading of welding deposited metal is small, and welding cost compares relatively low.
The groove of automatic welding process can realize multilayer single-run welding, therefore welding efficiency is high, the welding interval of per pass weld bond
It is relatively short.
Using automatic welding process, reduce and welder's technical ability is relied on, improve quality stability.
Brief description of the drawings
With reference to the accompanying drawings and detailed description, steel containment vessel of nuclear power station automatic soldering method of the present invention is carried out detailed
Describe in detail it is bright, wherein:
Fig. 1 is containment divided edge structure schematic diagram in steel containment vessel of nuclear power station automatic soldering method of the present invention.
Fig. 2 is the welding schematic diagram of invention steel containment vessel of nuclear power station automatic soldering method.
Embodiment
In order to become apparent from goal of the invention, technical solution and its technique effect of the present invention, below in conjunction with specific implementation
Mode, the present invention will be described in further detail.It should be appreciated that the embodiment described in this specification is only
It is to explain the present invention, is not intended to limit the present invention.
It refer to shown in Fig. 1 and Fig. 2, the present invention provides a kind of steel containment vessel of nuclear power station automatic soldering method, it is wrapped
Include following steps：
1) opposed end of containment mother metal is made to form combination groove before welding, combination groove includes upper groove and descending
Mouthful, at the top of the upper lower groove of groove bottom connection, lower groove bottom is equipped with bottom root face；
2) bottoming welding is carried out to the bottom of bottom root face and lower root face, forms root pass；
3) welding is filled to lower root face and upper groove, welding filling material serves as consumable electrode, welding filling material
For solid core or flux-cored wire, filler pass is formed；And
4) since remaining 4~6mm of throat depth, cover welding is carried out to the top of upper groove, cover welding uses line
Property welding bead or weave bead.
In the embodiment shown in figure 1, in step 1), the height H1 scopes of bottom root face are 2.0~3.0mm, bottom
The width X1 scopes of root face are 2~3.5mm, and the top width X scopes of upper groove are 7.5~10.5mm, lower groove top width
X2 scopes are 7.0~8.0mm, and lower groove depth H2 scopes are 18~22mm, steel containment vessel of nuclear power station automatic soldering method
Solderable wall thickness range 20mm~80mm.
An embodiment of steel containment vessel of nuclear power station automatic soldering method according to the present invention, steel containment vessel of nuclear power station
Automatic soldering method is pulse melts pole gas shielded arc welding.In step 2) bottoming welding, the voltage peak of the source of welding current
Scope is 15V~25V, and the scope of electric current base value is 100A~150A, and the scope of current peak is 280A~350A, the base of welding wire
Value wire feed rate is 40~90inch/min, and the peak value wire feed rate of welding wire is 170~230inch/min, and the speed of welding is 6
~15inch/min, gage of wire scope are φ 1.2mm~φ 1.6mm.In step 3) filling welding, the Voltage Peak of the source of welding current
The scope of value is 20V~30V, and the scope of electric current base value is 200A~250A, and the scope of current peak is 300A~500A, welding wire
Base value wire feed rate be 60~105inch/min, the peak value wire feed rate of welding wire is 80~140inch/min, the speed of welding
It is φ 1.2mm~φ 1.6mm to spend for 6~15inch/min, gage of wire scope.In step 4) cover welding, electric appliance is welded
The scope of voltage peak is 18V~30V, and the scope of electric current base value is 120A~200A, the scope of current peak for 280A~
350A, the base value wire feed rate of welding wire is 30~60inch/min, and the peak value wire feed rate of welding wire is 80~120inch/min,
The speed of welding is 5~8inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
An embodiment of steel containment vessel of nuclear power station automatic soldering method, welding filling material are being sent according to the present invention
Heated during silk using temperature control system, heating-up temperature is 100 DEG C -600 DEG C, and is put down in welding process using magnetic control system
Weighing apparatus welding magnetic field.
An embodiment of steel containment vessel of nuclear power station automatic soldering method according to the present invention, the material of containment is not
Become rusty steel, carbon steel or steel alloy, and the protective gas of welding is the mixed gas of helium, argon gas or oxygen and argon gas；Or containment
Material be carbon silico-manganese steel, the protective gas is argon gas and oxygen mixed gas.
According to above description, relative to the prior art, steel containment vessel of nuclear power station automatic soldering method tool of the present invention
Have the advantage that：
The loading of welding deposited metal is small, and welding cost compares relatively low.
The groove of automatic welding process can realize multilayer single-run welding, therefore welding efficiency is high, the welding interval of per pass weld bond
It is relatively short.
Using automatic welding process, reduce and welder's technical ability is relied on, improve quality stability.
According to above-mentioned principle, the present invention can also carry out the above embodiment appropriate change and modification.Therefore, this hair
It is bright to be not limited to embodiment disclosed and described above, some modifications and changes of the present invention should also be as falling into this
In the scope of the claims of invention.In addition, although used some specific terms in this specification, but these terms
Merely for convenience of description, do not limit the present invention in any way.
Claims (14)
1. a kind of steel containment vessel of nuclear power station automatic soldering method, it is characterised in that comprise the following steps：
1) opposed end of containment mother metal is made to form combination groove before welding, combination groove includes upper groove and lower groove, on
At the top of the lower groove of groove bottom connection, lower groove bottom is equipped with bottom root face；
2) bottoming welding is carried out to the bottom of bottom root face and lower root face, forms root pass；
3) welding is filled to lower root face and upper groove, forms filler pass；And
4) cover welding is carried out to the top of upper groove.
2. steel containment vessel of nuclear power station automatic soldering method according to claim 1, it is characterised in that in step 1), bottom
The altitude range of portion's root face is 2.0~3.0mm, and the width range of bottom root face is 2~3.5mm, the top width model of upper groove
It is 7.0~8.0mm to enclose for 7.5~10.5mm, lower groove top width scope, and the altitude range of lower groove is 18~22mm.
3. steel containment vessel of nuclear power station automatic soldering method according to claim 1, it is characterised in that in step 4), lid
Face welding uses linear bead or weave bead.
4. steel containment vessel of nuclear power station automatic soldering method according to claim 1, it is characterised in that in step 4), from
Remaining 4~6mm of throat depth starts, and carries out cover welding.
5. steel containment vessel of nuclear power station automatic soldering method according to claim 1, it is characterised in that in step 3), weldering
Connect packing material and serve as consumable electrode, welding filling material is solid core or flux-cored wire.
6. steel containment vessel of nuclear power station automatic soldering method according to claim 1, it is characterised in that the nuclear power station steel
The solderable wall thickness range of containment automatic soldering method processed is 20mm~80mm.
7. steel containment vessel of nuclear power station automatic soldering method according to any one of claim 1 to 6, it is characterised in that
The steel containment vessel of nuclear power station automatic soldering method is pulse melts pole gas shielded arc welding.
8. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that step 2) backing welding
In connecing, the scope of the voltage peak of the source of welding current is 15V~25V, and the scope of electric current base value is 100A~150A, current peak
Scope is 280A~350A, and the base value wire feed rate of welding wire is 40~90inch/min, the peak value wire feed rate of welding wire for 170~
230inch/min, the speed of welding is 6~15inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
9. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that step 3) filling weldering
In connecing, the scope of the voltage peak of the source of welding current is 20V~30V, and the scope of electric current base value is 200A~250A, current peak
Scope is 300A~500A, and the base value wire feed rate of welding wire is 60~105inch/min, the peak value wire feed rate of welding wire for 80~
140inch/min, the speed of welding is 6~15inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
10. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that step 4) capping
In welding, the scope of the voltage peak of the source of welding current is 18V~30V, and the scope of electric current base value is 120A~200A, current peak
Scope be 280A~350A, the base value wire feed rate of welding wire is 30~60inch/min, and the peak value wire feed rate of welding wire is 80
~120inch/min, the speed of welding is 5~8inch/min, and gage of wire scope is φ 1.2mm~φ 1.6mm.
11. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that welding filling material
Material is heated during wire feed using temperature control system, and heating-up temperature is 100 DEG C -600 DEG C.
12. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that in welding process
Welding magnetic field is balanced using magnetic control system.
13. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that the containment
Material be stainless steel, carbon steel or steel alloy, the protective gas of welding for helium, argon gas or oxygen and argon gas mixed gas.
14. steel containment vessel of nuclear power station automatic soldering method according to claim 7, it is characterised in that the containment
Material be carbon silico-manganese steel, the protective gas of welding is argon gas and oxygen mixed gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328656.6A CN108015390A (en) | 2017-12-13 | 2017-12-13 | Steel containment vessel of nuclear power station automatic soldering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328656.6A CN108015390A (en) | 2017-12-13 | 2017-12-13 | Steel containment vessel of nuclear power station automatic soldering method |
Publications (1)
| Publication Number | Publication Date |
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| CN108015390A true CN108015390A (en) | 2018-05-11 |
Family
ID=62073452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711328656.6A Pending CN108015390A (en) | 2017-12-13 | 2017-12-13 | Steel containment vessel of nuclear power station automatic soldering method |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843102A (en) * | 2020-07-10 | 2020-10-30 | 中车株洲车辆有限公司 | T-shaped joint groove welding method |
| CN114131154A (en) * | 2021-11-04 | 2022-03-04 | 中广核研究院有限公司 | Welding method for low alloy steel adapter tube of reactor main equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077547A (en) * | 2006-08-25 | 2007-11-28 | 中国核工业第二三建设公司 | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method |
| CN101947700A (en) * | 2010-09-09 | 2011-01-19 | 中广核工程有限公司 | Groove for automatic welding of nuclear power station and automatic welding method |
| CN101972884A (en) * | 2010-09-09 | 2011-02-16 | 中广核工程有限公司 | Automatic welding method of nuclear island main pipes |
| CN103394796A (en) * | 2013-06-27 | 2013-11-20 | 中广核工程有限公司 | Narrow gap groove of steel containment vessel of nuclear power station and automatic welding method thereof |
-
2017
- 2017-12-13 CN CN201711328656.6A patent/CN108015390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077547A (en) * | 2006-08-25 | 2007-11-28 | 中国核工业第二三建设公司 | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method |
| CN101947700A (en) * | 2010-09-09 | 2011-01-19 | 中广核工程有限公司 | Groove for automatic welding of nuclear power station and automatic welding method |
| CN101972884A (en) * | 2010-09-09 | 2011-02-16 | 中广核工程有限公司 | Automatic welding method of nuclear island main pipes |
| CN103394796A (en) * | 2013-06-27 | 2013-11-20 | 中广核工程有限公司 | Narrow gap groove of steel containment vessel of nuclear power station and automatic welding method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843102A (en) * | 2020-07-10 | 2020-10-30 | 中车株洲车辆有限公司 | T-shaped joint groove welding method |
| CN114131154A (en) * | 2021-11-04 | 2022-03-04 | 中广核研究院有限公司 | Welding method for low alloy steel adapter tube of reactor main equipment |
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Application publication date: 20180511 |