CN101947700A - Groove for automatic welding of nuclear power station and automatic welding method - Google Patents
Groove for automatic welding of nuclear power station and automatic welding method Download PDFInfo
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- CN101947700A CN101947700A CN2010102839003A CN201010283900A CN101947700A CN 101947700 A CN101947700 A CN 101947700A CN 2010102839003 A CN2010102839003 A CN 2010102839003A CN 201010283900 A CN201010283900 A CN 201010283900A CN 101947700 A CN101947700 A CN 101947700A
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Abstract
In the invention, in order to realize single-channel multi-layer welding of automatic welding, a 3 V groove is adopted on a main pipeline of which the wall thickness is more than 85 mm, and twice closing is performed during the automatic welding so as to ensure that the width of the top welding bead is not less than 10.5 mm. The invention relates to a groove for the automatic welding of a nuclear power station and an automatic welding method, wherein the groove comprises an upper groove, a middle groove and a lower groove; the bottom of the upper groove is connected with the top of the middle grove; the bottom of the middle groove is connected with the top of the lower groove; the bottom of the lower groove is provided with a protruding bottom truncated edge; the height of the bottom truncated edge is between 1.5 and 2.5 mm; the width of the bottom truncated edge is between 3 and 3.5 mm; the width of the top of the upper groove is between 9.5 and 10.5 mm; the width of the top of the middle groove is between 8.0 and 9.0 mm; the width of the top of the lower groove is between 6.5 and 7.5 mm; the height of the lower groove is between 12 and 18 mm; and the height of the middle groove is between 45 and 55 mm. In the invention, in order to realize the single-channel multi-layer welding of the automatic welding, the 3 V groove is adopted on the main pipeline of which the wall thickness is more than 85 mm, and the twice closing is performed for the automatic welding so as to ensure that the width of the top welding bead is not less than 10.5 mm.
Description
Technical field
The present invention relates to the nuclear power technology field, more particularly, relate to the groove and the automatic soldering method of automatic welding.
Background technology
Automatic welding technique is an advanced person's a solder technology, is widely adopted in fields such as device fabrication, petrochemical industry.In the Nuclear Power Station stage, the automatic weldering in narrow gap not only can reduce the groove cross-sectional area significantly, significantly reduce the loading of weld metal, and under less sweating heat input, can realize welding efficiently.Simultaneously, the influence of people because of factor got rid of in weldering to greatest extent automatically, and it is more stable that welding quality is compared manual welding.Therefore it is comparatively remarkable to be welded in the superiority of using in the nuclear power station trunk line welding process automatically, and crucial progradation is played in the further reduction of further raising, the further compression of welding duration, nuclear power construction cost of nuclear power station welding quality.
In the nuclear power station trunk line welded automatically, the general V-type standard groove that adopts the band root face in conjunction with the concrete size of main equipment/trunk line, carried out detailed groove size design, guarantees that every welding bead Breadth Maximum is not more than 10.5mm, welded to realize trunk line single track multilayer.
Can use two V grooves for wall thickness less than the trunk line of 85mm, but for the trunk line of wall thickness greater than 85mm, use two V grooves then can't reach the standard that every welding bead Breadth Maximum is not more than 10.5mm, therefore need be to the trunk line design new tube groove of wall thickness, with the better advantage that embodies automatic weldering greater than 85mm.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective of prior art, provides a kind of the nuclear power station groove and automatic soldering method of welding automatically of being used for, and it is applicable to the nuclear island of nuclear power station trunk line of wall thickness greater than 85mm.
The technical solution adopted for the present invention to solve the technical problems is:
Construct a kind of nuclear power station groove of welding automatically, described pipeline wall thickness is greater than 85mm, boring mouth width is 10～15mm in the pipeline, wherein, described groove comprises: go up groove, middle groove and following groove, described go up the groove bottom connect described in the groove top, described in the groove bottom connect described groove top down, the bottom root face is equipped with in described groove down bottom;
Described bottom width of root face scope is 1.5～2.5mm, and bottom root face width range is 3～3.5mm;
The described top width scope that goes up groove is 9.5～10.5mm, and described middle groove top width scope is 8.0～9.0mm, and described groove top width scope down is 6.5～7.5mm;
Described groove depth scope down is 12～18mm, and described middle groove depth scope is 45～55mm.
Groove of the present invention, wherein, described bottom width of root face scope is 1.9～2.1mm, bottom root face width range is 3～3.4mm.
Groove of the present invention, wherein, the described top width scope that goes up groove is 9.7～10.3mm.
Groove of the present invention, wherein, described middle groove top width scope is 8.3～8.9mm, described middle groove depth scope is 49.5～50.5mm.
Groove of the present invention, wherein, described groove top width scope down is 6.8～7.2mm, described groove depth scope down is 14.5～15.5mm.
The present invention also provides a kind of nuclear power station automatic soldering method, and described pipeline wall thickness is greater than 85mm, and boring mouth width is 10～15mm in the pipeline, comprises step:
Make the opposed end of described pipeline mother metal form the preceding combination of welding groove, described combination groove comprises groove, middle groove and following groove, described go up the groove bottom connect described in the groove top, described in the groove bottom connect described groove top down, the bottom root face is equipped with in described groove down bottom; The described bottom width of root face (H1) scope is 1.5～2.5mm, and bottom root face width (X1) scope is 3～3.5mm; Described top width (X) scope that goes up groove is 9.5～10.5mm, and described middle groove top width (X3) scope is 8.0～9.0mm, and described groove top width (X2) scope down is 6.5～7.5mm; Described groove depth (H2) scope down is 12～18mm, and described middle groove depth (H3) scope is 45～55mm;
Wherein, described welding method also comprises step:
To the welding that feels secure of the bottom of bottom root face and following root face, form root pass, comprise successively from top to bottom: penetration bead, the first fusion welding bead, the second fusion welding bead, first support welding bead, the second support welding bead, the 3rd supports welding bead, the 4th and supports welding bead;
To root face and last groove are filled welding, the formation filler pass down;
Recharge welding, form the filler pass in latter stage;
Carry out cover welding, adopt 1 or many weave beads and/or 1 or many stringer beads.
Nuclear power station automatic soldering method of the present invention wherein, from residue throat depth 8～12mm, recharges welding;
From residue throat depth 2～3mm, carry out cover welding.
Nuclear power station automatic soldering method of the present invention, wherein, in the step that forms described penetration bead, the base value wire feed rate of setting the welding wire of welding electrical equipment is 15～30inch/min, and the peak value wire feed rate of welding wire is 30～60inch/min, the speed of welding is 2～3inch/min, the voltage peak scope is 9V～12V, and the scope of electric current base value is 60A～80A, and the scope of current peak is 90A～150A, pulse frequency is 2.0pps, and dutycycle is 50%;
In the step that forms the described first fusion welding bead, the second fusion welding bead, the wire feed rate of setting the welding wire of welding electrical equipment is 0, the speed of welding is 2～3inch/min, the voltage peak scope is 9V～12V, the scope of electric current base value is 30A～60A, the scope of current peak is 150A～180A, and pulse frequency is 2.0pps, and dutycycle is 25%.
Nuclear power station automatic soldering method of the present invention, wherein, in the step that forms the described first support welding bead, the base value wire feed rate of setting the welding wire of welding electrical equipment is 5～15inch/min, and the peak value wire feed rate of welding wire is 30～90inch/min, the speed of welding is 2～4inch/min, the voltage peak scope is 10V～14V, and the scope of electric current base value is 50A～60A, and the scope of current peak is 200A～220A, pulse frequency is 1.5pps, and dutycycle is 25%;
In the step that forms the described second support welding bead, the 3rd support welding bead, the 4th support welding bead, the base value wire feed rate of setting the welding wire of welding electrical equipment is 20～50inch/min, the peak value wire feed rate of welding wire is 50～130inch/min, the speed of welding is 2～5inch/min, the voltage peak scope is 10V～14V, and the scope of electric current base value is 90A～110A, and the scope of current peak is 260A～290A, pulse frequency is 2.0pps, and dutycycle is 25%;
Form described filler pass and latter stage filler pass step in, the base value wire feed rate of setting the welding wire of welding electrical equipment is 0, the peak value wire feed rate of welding wire is 60～150inch/min, the speed of welding is 1.5～3inch/min, the voltage peak scope is 10V～16V, and the scope of electric current base value is 160A～230A, and the scope of current peak is 260A～300A, pulse frequency is 2.0pps, and dutycycle is 35%.
Nuclear power station automatic soldering method of the present invention, wherein, in the step of the weave bead of cover welding, the base value wire feed rate of setting the welding wire of welding electrical equipment is 0～20inch/min, the peak value wire feed rate of welding wire is 40～80inch/min, the speed of welding is 2～4inch/min, the voltage peak scope is 11V～14V, the scope of electric current base value is 60A～130A, the scope of current peak is 210A～260A, tungsten electrode is 0～1s in the time delay of weld seam both sides, and the time of tungsten electrode from weld seam one side to the weld seam opposite side is 0.2～0.7s, and the width of tungsten electrode from weld seam one side to the weld seam opposite side is 0.1～0.4inch;
In the step of the stringer bead of cover welding, the base value wire feed rate of setting the welding wire of welding electrical equipment is 5～15inch/min, the peak value wire feed rate of welding wire is 50～100inch/min, the speed of welding is 2～3inch/min, the voltage peak scope is 11V～14V, and the scope of electric current base value is 50A～110A, and the scope of current peak is 180A～240A, pulse frequency is 2.0pps, and dutycycle is 35%.
Nuclear power station automatic soldering method of the present invention, wherein, employed tungsten machine is curved tungsten electrode in first, second fusion welding bead, and angle of bend is 30 °～60 °, and diameter is 3～4mm; Employed tungsten electrode is straight tungsten electrode in cover welding, and diameter is 3～4mm.
Nuclear power station automatic soldering method of the present invention; wherein; the material of described pipeline is a stainless steel; the protective gas of welding is the mist of argon gas and helium; gas flow is 25～80L/min; throat thickness is before 15～20mm, and the protective gas at the back side is an argon gas, and gas flow is 5～25L/min.
The present invention is in order to realize the single track multilayer welding of weldering automatically, at the trunk line employing 3V groove of wall thickness greater than 85mm, for example: adopt the 3V grooves in 90 ° of elbows that the main pump inlet nipple is connected with changeover portion; Adopt the 3V groove in 50 ° of elbows that the steam generator inlet nipple is connected with hot arc; Adopt the 3V groove in 40 ° of elbows that steam generator outlet ozzle is connected with changeover portion,, carry out twice closing in, guarantee that the top pass width is no more than 10.5mm with when welding automatically.And adopted new welding procedure further, further improve welding quality and the welding efficiency of wall thickness greater than the trunk line of 85mm.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the nuclear power station of the present invention divided edge structure schematic diagram of welding automatically;
Fig. 2 is the nuclear power station automatic soldering method welding bead distribution map of the embodiment of the invention;
Fig. 3 is the root pass structural representation of the embodiment of the invention.
The specific embodiment
The divided edge structure that the nuclear power station of the embodiment of the invention welds automatically as shown in Figure 1, wherein pipeline wall thickness is greater than 85mm, boring mouth width W is 10～15mm in the pipeline, groove comprises: go up groove, middle groove and following groove, groove top during last groove bottom connects, middle groove bottom connects groove top down, root face bottom be equipped with following groove bottom.Bottom width of root face H1 scope is 1.5～2.5mm, and bottom root face width X1 scope is 3～3.5mm; The top width X scope of last groove is 9.5～10.5mm, and middle groove top width X3 scope is 8.0～9.0mm, and following groove top width X2 scope is 6.5～7.5mm; Following groove depth H2 scope is 12～18mm, and middle groove depth H3 scope is 45～55mm.Because above groove has three gradients, therefore note is made the 3V groove.
Among the above embodiment, preferably, the bottom width of root face H1 scope of 3V groove is 1.9～2.1mm, for example 1.9mm, 2.0mm, 2.1mm etc., and bottom root face width W scope is 3～3.4mm, for example 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm etc.
Among the above embodiment, preferably, the top width X scope of the last groove of 3V groove is 9.7～10.3mm, for example 9.7mm, 9.8mm, 9.9mm, 10mm, 10.1mm, 10.2mm, 10.3mm etc.
Among the above embodiment, preferably, the middle groove top width X3 scope of 3V groove is 8.3～8.9mm, for example 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8.7mm, 8.8mm, 8.9mm etc., middle groove depth H3 scope is 49.5～50.5mm, for example 49.5mm, 49.6mm, 49.7mm, 49.8mm, 50mm, 50.2mm, 50.5mm etc.
Among the above embodiment, preferably, the following groove top width X2 scope of 3V groove is 6.8～7.2mm, for example 6.8mm, 6.9mm, 7mm, 7.1mm, 7.2mm etc., following groove depth H2 scope is 14.5～15.5mm, for example 14.5mm, 14.6mm, 14.9mm, 15mm, 15.4mm, 15.5mm etc.
In another embodiment of the present invention, the welding method that provides a kind of 3V slope type that adopts previous embodiment to carry out pipeline welding, comprise step: make the opposed end of pipeline mother metal form the preceding combination of welding groove, the combination groove is the 3V groove, structure comprises groove, middle groove and following groove as shown in Figure 1, groove top during last groove bottom connects, the groove bottom connects groove top down in described, and the bottom root face is equipped with in following groove bottom; The bottom width of root face (H1) scope is 1.5～2.5mm, and bottom root face width (X1) scope is 3～3.5mm; The top width of last groove (X) scope is 9.5～10.5mm, and middle groove top width (X3) scope is 8.0～9.0mm, and following groove top width (X2) scope is 6.5～7.5mm; Following groove depth (H2) scope is 12～18mm, and middle groove depth (H3) scope is 45～55mm.
Also comprise step: to the welding that feels secure of the bottom of bottom root face and following root face, form root pass, comprise successively from top to bottom: penetration bead, the first fusion welding bead, the second fusion welding bead, first support welding bead, the second support welding bead, the 3rd supports welding bead, the 4th and supports welding bead; To root face and last groove are filled welding, the formation filler pass down; From residue throat depth 8～12mm, recharge welding, form the filler pass in latter stage; From residue throat depth 2～3mm, carry out cover welding, adopt 1 or many weave beads and/or 1 or many stringer beads.
Note in the above step following some:
The first, first of root pass merges welding bead and the second fusion welding bead is the core of root pass, uses curved tungsten electrode, and no wire feed carries out dry combustion method to melting welding bead (being backing run) both sides;
The second, again integration technology be filler pass and latter stage filler pass outward appearance can't be satisfactory, then can not use the dry combustion method of filling metal;
The 3rd, reasonably the technological specification parameter need be provided with respectively according to the diverse location of weld seam, as shown in Figure 2, is divided into root pass 1, filler pass 2, latter stage filler pass 3 and final pass 4.Especially seven steps that were divided into of root pass weld, as shown in Figure 3, comprise and melt welding bead 11, the first fusion welding bead 12, the second fusion welding bead 13, first supports welding bead 14, second supports welding bead 15, the 3rd support welding bead 16, the 4th support welding bead 17, lays a good foundation most important to the welding of whole groove;
The 4th, reasonably the technological specification parameter comprise wire feed rate (base value and peak value), to the mutual restriction that influences each other between welding current (base value and peak value), weldingvoltage (base value and peak value), the speed of welding etc., the scope that can Gong select for use is all arranged.
In welding process, root pass plays a part the pioneer, for whole welding lays the first stone.Melting that welding bead promptly feels secure is to guarantee the moulding of inner surface of pipeline and the fusion of root face, welding parameter is less relatively, but easily form the sidewall incomplete fusion, two fusion welding beads adopt curved tungsten electrode butt welded seam both sides not have the dry combustion method of filling metal respectively, eliminated the risk that defective that sidewall do not merge exists fully, four are supported welding bead and form the relation of going forward one by one, under the ability to bear of backing weld seam, assurance welding quality as well as possible, growth throat thickness as much as possible, at wire feed rate (base value and peak value), welding current (base value and peak value) has strict adjustment and control on the parameters such as speed of welding.
Filler pass and latter stage filler pass be not very strict to the requirement of energy, importantly guarantee between the welding bead not for not having defectives such as pore, crackle in fusion and the weld seam, also to guarantee certain welding efficiency simultaneously, speed of welding is constant, improve the thickness that wire feed rate then can improve every layer of welding bead, thereby improve the speed of welding of finishing whole weld bond.
Final pass can adopt linear welding bead and weave bead to weld, and reasonably selecting welding parameter mainly is in order to guarantee that figuration of bead is attractive in appearance, prevent to produce the surface and do not merge and defectives such as undercut that welding employed tungsten electrode is straight tungsten electrode, and diameter is 3～4mm.
The material of pipeline is a stainless steel, and the protective gas of welding preferably adopts the mist of argon gas and helium, and gas flow is 25～80L/min, and throat thickness is before 15～20mm, and the protective gas at the back side is an argon gas, and gas flow is 5～25L/min.
Selectable parameter area is as shown in table 1 below in the welding process:
Table 1 nuclear power station welds welding parameter automatically
In the above table 1, listed parameter area is selectable scope, during the actual set welding parameter, can select the arbitrary value in the above scope according to the groove size and the pipeline configuration of concrete needs welding, is advisable to guarantee welding quality, does not list one by one at this.
The weld seam that adopts above welding method is carried out x-ray inspection and ultrasonic examination, and result of detection shows: all weld seams 100% are qualified, and welded the used time of the 3V groove of same logarithm much smaller than the existing used time of automatic soldering method.
Therefore, the risk that the defective that nuclear island trunk line automatic soldering method of the present invention can not only effectively avoid the root sidewall not merge produces can also improve speed of welding, thereby improves the welding efficiency of wall thickness greater than the nuclear island trunk line of 85mm.
The present invention is in order to realize the single track multilayer welding of weldering automatically, at the trunk line employing 3V groove of wall thickness greater than 85mm, for example: adopt the 3V grooves in 90 ° of elbows that the main pump inlet nipple is connected with changeover portion; Adopt the 3V groove in 50 ° of elbows that the steam generator inlet nipple is connected with hot arc; Adopt the 3V groove in 40 ° of elbows that steam generator outlet ozzle is connected with changeover portion,, carry out twice closing in, guarantee that the top pass width is no more than 10.5mm with when welding automatically.And adopted new welding procedure further, further improve welding quality and the welding efficiency of wall thickness greater than the trunk line of 85mm.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (13)
1. the nuclear power station groove of welding automatically, described pipeline wall thickness is greater than 85mm, boring mouth width (W) is 10～15mm in the pipeline, it is characterized in that, described groove comprises: go up groove, middle groove and following groove, described go up the groove bottom connect described in the groove top, described in the groove bottom connect described groove top down, the bottom root face is equipped with in described groove down bottom;
The described bottom width of root face (H1) scope is 1.5～2.5mm, and bottom root face width (X1) scope is 3～3.5mm;
Described top width (X) scope that goes up groove is 9.5～10.5mm, and described middle groove top width (X3) scope is 8.0～9.0mm, and described groove top width (X2) scope down is 6.5～7.5mm;
Described groove depth (H2) scope down is 12～18mm, and described middle groove depth (H3) scope is 45～55mm.
2. groove according to claim 1 is characterized in that, the described bottom width of root face (H1) scope is 1.9～2.1mm, and bottom root face width (X1) scope is 3～3.4mm.
3. groove according to claim 2 is characterized in that, described top width (X) scope that goes up groove is 9.7～10.3mm.
4. groove according to claim 3 is characterized in that, described middle groove top width (X3) scope is 8.3～8.9mm, and described middle groove depth (H3) scope is 49.5～50.5mm.
5. groove according to claim 4 is characterized in that, described groove top width (X2) scope down is 6.8～7.2mm, and described groove depth (H2) scope down is 14.5～15.5mm.
6. nuclear power station automatic soldering method, described pipeline wall thickness are greater than 85mm, and boring mouth width is 10～15mm in the pipeline, it is characterized in that, comprises step:
Make the opposed end of described pipeline mother metal form the preceding combination of welding groove, described combination groove comprises groove, middle groove and following groove, described go up the groove bottom connect described in the groove top, described in the groove bottom connect described groove top down, the bottom root face is equipped with in described groove down bottom; The described bottom width of root face (H1) scope is 1.5～2.5mm, and bottom root face width (X1) scope is 3～3.5mm; Described top width (X) scope that goes up groove is 9.5～10.5mm, and described middle groove top width (X3) scope is 8.0～9.0mm, and described groove top width (X2) scope down is 6.5～7.5mm; Described groove depth (H2) scope down is 12～18mm, and described middle groove depth (H3) scope is 45～55mm;
Wherein, described welding method also comprises step:
To the welding that feels secure of the bottom of bottom root face and following root face, form root pass, comprise successively from top to bottom: penetration bead, the first fusion welding bead, the second fusion welding bead, first support welding bead, the second support welding bead, the 3rd supports welding bead, the 4th and supports welding bead;
To root face and last groove are filled welding, the formation filler pass down;
Recharge welding, form the filler pass in latter stage;
Carry out cover welding, adopt 1 or many weave beads and/or 1 or many stringer beads.
7. nuclear power station automatic soldering method according to claim 6 is characterized in that, from residue throat depth 8～12mm, recharges welding;
From residue throat depth 2～3mm, carry out cover welding.
8. nuclear power station automatic soldering method according to claim 6, it is characterized in that, in the step that forms described penetration bead, the base value wire feed rate of setting the welding wire of welding electrical equipment is 15～30inch/min, and the peak value wire feed rate of welding wire is 30～60inch/min, the speed of welding is 2～3inch/min, the voltage peak scope is 9V～12V, and the scope of electric current base value is 60A～80A, and the scope of current peak is 90A～150A, pulse frequency is 2.0pps, and dutycycle is 50%;
In the step that forms the described first fusion welding bead, the second fusion welding bead, the wire feed rate of setting the welding wire of welding electrical equipment is 0, the speed of welding is 2～3inch/min, the voltage peak scope is 9V～12V, the scope of electric current base value is 30A～60A, the scope of current peak is 150A～180A, and pulse frequency is 2.0pps, and dutycycle is 25%.
9. the nuclear power station automatic soldering method described in according to Claim 8 is characterized in that, merges at first, second that employed tungsten machine is curved tungsten electrode in welding bead, and angle of bend is 30 °～60 °, and diameter is 3～4mm.
10. nuclear power station automatic soldering method according to claim 6, it is characterized in that, in the step that forms the described first support welding bead, the base value wire feed rate of setting the welding wire of welding electrical equipment is 5～15inch/min, and the peak value wire feed rate of welding wire is 30～90inch/min, the speed of welding is 2～4inch/min, the voltage peak scope is 10V～14V, and the scope of electric current base value is 50A～60A, and the scope of current peak is 200A～220A, pulse frequency is 1.5pps, and dutycycle is 25%;
In the step that forms the described second support welding bead, the 3rd support welding bead, the 4th support welding bead, the base value wire feed rate of setting the welding wire of welding electrical equipment is 20～50inch/min, the peak value wire feed rate of welding wire is 50～130inch/min, the speed of welding is 2～5inch/min, the voltage peak scope is 10V～14V, and the scope of electric current base value is 90A～110A, and the scope of current peak is 260A～290A, pulse frequency is 2.0pps, and dutycycle is 25%;
Form described filler pass and latter stage filler pass step in, the base value wire feed rate of setting the welding wire of welding electrical equipment is 0, the peak value wire feed rate of welding wire is 60～150inch/min, the speed of welding is 1.5～3inch/min, the voltage peak scope is 10V～16V, and the scope of electric current base value is 160A～230A, and the scope of current peak is 260A～300A, pulse frequency is 2.0pps, and dutycycle is 35%.
11. nuclear power station automatic soldering method according to claim 6, it is characterized in that, in the step of the weave bead of cover welding, the base value wire feed rate of setting the welding wire of welding electrical equipment is 0～20inch/min, the peak value wire feed rate of welding wire is 40～80inch/min, the speed of welding is 2～3.5inch/min, the voltage peak scope is 11V～14V, the scope of electric current base value is 60A～130A, the scope of current peak is 210A～260A, tungsten electrode is 0～1s in the time delay of weld seam both sides, and the time of tungsten electrode from weld seam one side to the weld seam opposite side is 0.2～0.7s, and the width of tungsten electrode from weld seam one side to the weld seam opposite side is 0.1～0.4inch;
In the step of the stringer bead of cover welding, the base value wire feed rate of setting the welding wire of welding electrical equipment is 5～15inch/min, the peak value wire feed rate of welding wire is 50～100inch/min, the speed of welding is 2～3inch/min, the voltage peak scope is 11V～14V, and the scope of electric current base value is 50A～110A, and the scope of current peak is 180A～240A, pulse frequency is 2.0pps, and dutycycle is 35%.
12. the nuclear power station automatic soldering method according to described in the claim 11 is characterized in that, employed tungsten electrode is straight tungsten electrode in cover welding, and diameter is 3～4mm.
13. nuclear power station automatic soldering method according to claim 6; it is characterized in that; the material of described pipeline is a stainless steel; the protective gas of welding is the mist of argon gas and helium; gas flow is 25～80L/min; throat thickness is before 15～20mm, and the protective gas at the back side is an argon gas, and gas flow is 5～25L/min.
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| CN103447669A (en) * | 2013-09-03 | 2013-12-18 | 中广核工程有限公司 | Method and bent tungsten electrode for automatic backing welding of pipe of nuclear power station |
| CN104252884A (en) * | 2013-06-27 | 2014-12-31 | 中广核工程有限公司 | Installation method of primary loop main pipeline of nuclear power plant |
| CN104759797A (en) * | 2015-04-14 | 2015-07-08 | 攀钢集团工程技术有限公司 | Combined groove for thick workpiece crack repairing and combined groove repairing technology |
| CN105458476A (en) * | 2015-12-30 | 2016-04-06 | 中国核工业二三建设有限公司 | Method for welding main steam or main water supply pipeline of nuclear island in nuclear power plant |
| CN105499824A (en) * | 2016-01-25 | 2016-04-20 | 重庆长征重工有限责任公司 | Single-slope V-groove structure for steel plate welding |
| CN105855673A (en) * | 2016-05-30 | 2016-08-17 | 吉林昊宇电气股份有限公司 | Thick-wall steel pipe mixed type groove structure and matched welding tip thereof |
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| CN108015390A (en) * | 2017-12-13 | 2018-05-11 | 中广核工程有限公司 | Steel containment vessel of nuclear power station automatic soldering method |
| CN108067708A (en) * | 2017-12-21 | 2018-05-25 | 中广核工程有限公司 | Nuclear power station spent fuel reservoir stainless steel clad can automatic soldering method |
| CN108714748A (en) * | 2018-06-04 | 2018-10-30 | 中国电建集团核电工程有限公司 | Nuclear power plant main pipeline forging all positon narrow gap automatic welding groove and welding procedure |
| CN109175617A (en) * | 2018-10-18 | 2019-01-11 | 东莞理工学院 | A kind of high steam pipeline welding method |
| CN110181147A (en) * | 2019-05-07 | 2019-08-30 | 上海电气核电设备有限公司 | A kind of welding method of temperature gas cooled reactor steam generator tube sheet and header |
| CN112404664A (en) * | 2020-10-21 | 2021-02-26 | 常州蓝翼飞机装备制造有限公司 | Stainless steel helium arc welding process and welding groove structure |
| 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 |
| CN115070171A (en) * | 2022-07-26 | 2022-09-20 | 中国科学院合肥物质科学研究院 | Welding method for improving strength of N50 armor weld joint |
| CN115430889A (en) * | 2022-09-20 | 2022-12-06 | 中广核工程有限公司 | Wireless welding machine parameter configuration device |
| CN117600616A (en) * | 2024-01-18 | 2024-02-27 | 中国核工业二三建设有限公司 | Welding method of nuclear power main pipeline |
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| CN104252884A (en) * | 2013-06-27 | 2014-12-31 | 中广核工程有限公司 | Installation method of primary loop main pipeline of nuclear power plant |
| CN103447669A (en) * | 2013-09-03 | 2013-12-18 | 中广核工程有限公司 | Method and bent tungsten electrode for automatic backing welding of pipe of nuclear power station |
| CN104759797A (en) * | 2015-04-14 | 2015-07-08 | 攀钢集团工程技术有限公司 | Combined groove for thick workpiece crack repairing and combined groove repairing technology |
| CN105458476A (en) * | 2015-12-30 | 2016-04-06 | 中国核工业二三建设有限公司 | Method for welding main steam or main water supply pipeline of nuclear island in nuclear power plant |
| CN105499824A (en) * | 2016-01-25 | 2016-04-20 | 重庆长征重工有限责任公司 | Single-slope V-groove structure for steel plate welding |
| CN105855673A (en) * | 2016-05-30 | 2016-08-17 | 吉林昊宇电气股份有限公司 | Thick-wall steel pipe mixed type groove structure and matched welding tip thereof |
| CN106969165A (en) * | 2017-05-09 | 2017-07-21 | 新地能源工程技术有限公司 | The standard attachment structure of small-aperture ball valve, stop valve |
| CN108015390A (en) * | 2017-12-13 | 2018-05-11 | 中广核工程有限公司 | Steel containment vessel of nuclear power station automatic soldering method |
| CN108067708A (en) * | 2017-12-21 | 2018-05-25 | 中广核工程有限公司 | Nuclear power station spent fuel reservoir stainless steel clad can automatic soldering method |
| CN108714748A (en) * | 2018-06-04 | 2018-10-30 | 中国电建集团核电工程有限公司 | Nuclear power plant main pipeline forging all positon narrow gap automatic welding groove and welding procedure |
| CN109175617A (en) * | 2018-10-18 | 2019-01-11 | 东莞理工学院 | A kind of high steam pipeline welding method |
| CN110181147A (en) * | 2019-05-07 | 2019-08-30 | 上海电气核电设备有限公司 | A kind of welding method of temperature gas cooled reactor steam generator tube sheet and header |
| CN112404664A (en) * | 2020-10-21 | 2021-02-26 | 常州蓝翼飞机装备制造有限公司 | Stainless steel helium arc welding process and welding groove structure |
| CN112404664B (en) * | 2020-10-21 | 2023-12-29 | 常州蓝翼飞机装备制造有限公司 | Stainless steel helium arc welding process and welding groove structure |
| 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 |
| CN115070171A (en) * | 2022-07-26 | 2022-09-20 | 中国科学院合肥物质科学研究院 | Welding method for improving strength of N50 armor weld joint |
| CN115070171B (en) * | 2022-07-26 | 2023-09-29 | 中国科学院合肥物质科学研究院 | Welding method for improving strength of N50 armor weld joint |
| CN115430889A (en) * | 2022-09-20 | 2022-12-06 | 中广核工程有限公司 | Wireless welding machine parameter configuration device |
| CN115430889B (en) * | 2022-09-20 | 2023-09-29 | 中广核工程有限公司 | Parameter configuration device of wireless welding machine |
| CN117600616A (en) * | 2024-01-18 | 2024-02-27 | 中国核工业二三建设有限公司 | Welding method of nuclear power main pipeline |
| CN117600616B (en) * | 2024-01-18 | 2024-04-12 | 中国核工业二三建设有限公司 | Welding method of nuclear power main pipeline |
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