CN101653857A - Automatic welding method of electrically heated element bushing of voltage stabilizer and reducing bushing of electrically heated element bushing - Google Patents
Automatic welding method of electrically heated element bushing of voltage stabilizer and reducing bushing of electrically heated element bushing Download PDFInfo
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- CN101653857A CN101653857A CN200910195056A CN200910195056A CN101653857A CN 101653857 A CN101653857 A CN 101653857A CN 200910195056 A CN200910195056 A CN 200910195056A CN 200910195056 A CN200910195056 A CN 200910195056A CN 101653857 A CN101653857 A CN 101653857A
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Abstract
The invention relates to an automatic welding method of an electrically heated element bushing of a voltage stabilizer and a reducing bushing of the electrically heated element bushing, which is characterized by comprising the following steps: firstly, carrying out non-wire feeding melting welding on a beveling root between the electrically heated element bushing of the voltage stabilizer and thereducing bushing of the electrically heated element bushing by adopting automatic impulse argon-arc welding, wherein, a welding gun takes an axes of the reducing bushing as a center line to rotates 360 DEG to finish welding so as to form a first root base coat in the welding process; and then finishing a second middle wire feeding welding layer, a third cosmetic wire feeding welding layer and a fourth cosmetic wire feeding welding layer by automatic impulse synchronous wire feeding argon-arc welding. The invention has the advantages of realizing automatic impulse argon-arc welding barrier-freespin welding used for the electrically heated element bushing with more amount, complex arrangement and welding blind area existence and the reducing bushing thereof, improving the primary welding qualification rate, controlling the welding deformation by selecting a reasonable parameter of an automatic welding process, lowering the operation difficulty and the labor intensity of welders, reducing the correction of deformation after welding, and improving the production efficiency.
Description
Technical field
The present invention relates to voltage-stablizer electrical heating elements sleeve pipe and its transition spool piece automatic welding method for welding, relate in particular to quantity electrical heating elements sleeve pipe and its transition spool piece more, that arrange complexity and weld welding procedure automatically, can be used for the welding of voltage-stablizer electrical heating elements sleeve pipe and its transition spool piece and other nuclear power like product, belong to the welding method technical field.
Background technology
Electrical heating elements sleeve pipe and transition spool piece minor diameter butt weld quantity are more and arrange compactness, and minimum spacing is 30mm between the electrical heating elements casing threads head.This weld seam adopted a manual argon tungsten-arc welding that adds in the past, the direct weakness that reflects in welding process is: the first, compact mutual alignment makes the welding of weld seam have certain blind area between the electrical heating elements sleeve pipe, be the welding of band obstacle, and the dead angle that has the welder not observe.The second, the welding gun accessibility is bad, influences the performance of welder's operative skill, has certain reprocessing.If reprocess, cause quite expensive electrical heating elements sleeve pipe to scrap most probably, cost of goods manufactured is improved greatly.Three, the distortion of postwelding electrical heating elements sleeve pipe is bigger needs the cost plenty of time to proofread and correct, and might produce once more and scrap.
Because the particularity of electrical heating elements sleeve structure in this product, domestic and international professional welding equipment factory does not all have the automation welding procedure of this type of pipe butt joint form.
Summary of the invention
The purpose of this invention is to provide the first-time qualification rate that can improve weld seam to reduce manufacturing cost, the control welding deformation, accelerate the product manufacturing cycle, reduce welder's the operation easier and the automatic soldering method of labour intensity, realize the accessible rotating welding of electrical heating elements sleeve pipe pulse argonaut welding.
In order to achieve the above object, technical scheme of the present invention has provided voltage-stablizer electrical heating elements sleeve pipe and its transition spool piece automatic welding method for welding, it is characterized in that step is:
Step 1, the tungsten electrode of welding gun stretched into the groove between voltage-stablizer electrical heating elements sleeve pipe and the transition spool piece and point to the root of groove, the position of adjusting welding gun makes that the axis of welding gun is parallel with the axis of transition spool piece, with the pulse argonaut welding groove root between voltage-stablizer electrical heating elements sleeve pipe and the transition spool piece is implemented not fill silk and melt welding, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece in welding process, forms the first road root prime coat;
Step 2, implements the pulse weldering that fills silk with the pulse argonaut welding on the basis of the first road root prime coat, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece in welding process, forms silk filling weld layer in the middle of second road;
Step 3, implement the pulse weldering that fills silk with the pulse argonaut welding on the basis of the weld layer that fills silk in the middle of second road, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece in welding process, forms the 3rd road capping weld layer that fills silk;
Step 4, implement the pulse weldering that fills silk with the pulse argonaut welding on the 3rd road capping fills silk the basis of weld layer, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece in welding process, forms the 4th road capping weld layer that fills silk.
The present invention does not fill silk with the pulse argonaut welding and welds the first road root prime coat, can guarantee the root run through welding of sleeve pipe weld seam like this, and appearance of weld is good, has guaranteed the quality of root run.With impulsive synchronization wire feed argonaut welding silk filling welding intermediate layer and capping layer, guaranteed the quality of all the other weld seams, improved operating efficiency.Method provided by the invention is compared with GTAW, because the workpiece of automatic welding is heated evenly, speed of welding is very fast, the obviously excellent and latter is wanted in the postwelding angular deformation of generation.
Further, the size of peak value, background current coupling will directly have influence on the quality of the first road tape pulse fusing back welding, and (peak, background current is excessive or ratio can be burnt when too small, otherwise then may incomplete fusion), and the speed of pulse frequency can have influence on the quality and the bath temperature of high impulse wire feed.Therefore, the peak value of the welding current of described in the present invention pulse argonaut welding and the argonaut welding of described impulsive synchronization wire feed is 140～170A, and the base value of welding current is 50～70A, and pulse frequency is 1.5～4Hz.
Select less arc voltage when prime coat welds for use, electric arc is concentrated the through welding root when making tungsten electrode can accurately point to the groove root with the welding of assurance prime coat.When filling silk weldering, suitably transfer big arc voltage to make tungsten electrode molten bath far away slightly, insert to make things convenient for welding wire.Therefore, the arc voltage of the argonaut welding of pulse described in the step 1 in the present invention is 11.7～12.0V, the arc voltage of the wire feed of impulsive synchronization described in the step 2 argonaut welding is 11.9～12.3V, and the arc voltage of the wire feed of impulsive synchronization described in step 3 and the step 4 argonaut welding is 12.0～12.4V.
Wire feed rate and angle directly have influence on layer thickness and figuration of bead.Wire feed rate is too fast, and the also abundant fusing of welding wire just enters welding bead and jackscrew phenomenon (welding wire is answered back to the molten bath) occurs, crosses and then can cause welding wire to make weld seam not full because of early melting to waft from the molten bath slowly.Therefore, among the present invention, the wire feed rate of described impulsive synchronization wire feed argonaut welding is 500～600mm/min, and welding wire 0.5～1mm, angle of leaving tungsten electrode top 2～2.5mm, welding wire and tungsten electrode above the tungsten electrode of welding gun are 50～70 degree.
Advantage of the present invention is: can realize that quantity is more, it is complicated to arrange and have electrical heating elements sleeve pipe and its spacer shell accessible rotating welding of pulse argonaut welding of welding the blind area; Can improve the weld seam first-time qualification rate, select rational automatic soldering technique parameter control welding deformation, reduce welder's operation easier and labour intensity, reduce the correction of post welding distortion, enhance productivity.
Description of drawings
Fig. 1 is voltage-stablizer electrical heating elements sleeve pipe and its transition spool piece welding point schematic diagram;
Fig. 2 welds welding gun and welding support schematic diagram automatically.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment 1
The welding gun that uses in the welding method in the present embodiment as shown in Figure 2, comprise portal frame 7, on portal frame 7, vertically be provided with support 8, be provided with wire feeder 10 and the swing-around trajectory 9 vertical with support 8 at the top of support 8, on swing-around trajectory 9, vertically be provided with center-pole 11 and have the welding gun matrix 12 of wire feed bar, be provided with tungsten electrode 13 in the end of welding gun matrix 12.
In conjunction with Fig. 1 and Fig. 2, the voltage-stablizer electrical heating elements sleeve pipe of present embodiment and the concrete steps of its transition spool piece automatic welding method for welding are:
Step 1, the tungsten electrode of welding gun stretched into the groove between voltage-stablizer electrical heating elements sleeve pipe 5 and the transition spool piece 6 and point to the root of groove, the position of adjusting welding gun makes that the axis of welding gun is parallel with the axis of transition spool piece 6.When using device shown in Figure 2, voltage-stablizer electrical heating elements sleeve pipe 5 to be inserted in the center-pole 11, can realize centralized positioning like this, fixedly the flat board of transition spool piece 6 transfers to level then, transition spool piece 6 and dull and stereotyped vertical fixing, last have four to adjust screw rods below portal frame 7, the X on the portal frame 7, Y track can be adjusted to horizontal level, guaranteed the parallel of transition spool piece 6 axis and welding gun axis like this.With the pulse argonaut welding groove root between voltage-stablizer electrical heating elements sleeve pipe 5 and the transition spool piece 6 is implemented not fill silk and melt welding, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece 6 in welding process, forms the first road root prime coat 1;
Pulse silk filling weldering is implemented in step 2, the argonaut welding of usefulness impulsive synchronization wire feed on the basis of the first road root prime coat 1, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece 6 in welding process, forms the weld layer 2 that fills silk in the middle of second road;
Step 3, on the basis of the weld layer 2 that fills silk in the middle of second road, implement the pulse weldering that fills silk with the argonaut welding of impulsive synchronization wire feed, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece 6 in welding process, forms the 3rd road capping weld layer 3 that fills silk;
Step 4, on filling silk the basis of weld layer 3, implements the 3rd road capping the pulse weldering that fills silk with the argonaut welding of impulsive synchronization wire feed, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece 6 in welding process, forms the 4th road capping weld layer 4 that fills silk.Concrete parameter in this step and the results are shown in following table:
Embodiment 2
The step of present embodiment is identical with embodiment 1, and the parameter of just using is different, and is as shown in the table:
Embodiment 3
The step of present embodiment is identical with embodiment 1, and the parameter of just using is different, and is as shown in the table:
Claims (5)
1. voltage-stablizer electrical heating elements sleeve pipe and its transition spool piece automatic welding method for welding is characterized in that step is:
Step 1, the tungsten electrode of welding gun stretched into the groove between voltage-stablizer electrical heating elements sleeve pipe (5) and the transition spool piece (6) and point to the root of groove, the position of adjusting welding gun makes that the axis of welding gun is parallel with the axis of transition spool piece (6), with the pulse argonaut welding groove root between voltage-stablizer electrical heating elements sleeve pipe (5) and the transition spool piece (6) is implemented not fill silk and melt welding, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece (6) in welding process, forms the first road root prime coat (1);
Pulse silk filling weldering is implemented in step 2, the argonaut welding of usefulness impulsive synchronization wire feed on the basis of the first road root prime coat (1), welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece (6) in welding process, forms the weld layer (2) that fills silk in the middle of second road;
Step 3, on the basis of the weld layer (2) that fills silk in the middle of second road, implement the pulse weldering that fills silk with the argonaut welding of impulsive synchronization wire feed, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece (6) in welding process, forms the 3rd road capping weld layer (3) that fills silk;
Step 4, on filling silk the basis of weld layer (3), implements the 3rd road capping the pulse weldering that fills silk with the argonaut welding of impulsive synchronization wire feed, welding gun is that center line is done 360 degree rotations and finished welding with the axis of transition spool piece (6) in welding process, forms the 4th road capping weld layer (4) that fills silk.
2. voltage-stablizer electrical heating elements sleeve pipe as claimed in claim 1 and its transition spool piece automatic welding method for welding is characterized in that the rotary speed of described welding gun is 115～130mm/min.
3. voltage-stablizer electrical heating elements sleeve pipe as claimed in claim 1 and its transition spool piece automatic welding method for welding, it is characterized in that, the peak value of the welding current of described pulse argonaut welding and the argonaut welding of described impulsive synchronization wire feed is 140～170A, the base value of welding current is 50～70A, and pulse frequency is 1.5～4Hz.
4. voltage-stablizer electrical heating elements sleeve pipe as claimed in claim 1 and its transition spool piece automatic welding method for welding, it is characterized in that, the arc voltage of the argonaut welding of pulse described in the step 1 is 11.7～12.0V, the arc voltage of the wire feed of impulsive synchronization described in the step 2 argonaut welding is 11.9～12.3V, and the arc voltage of the wire feed of impulsive synchronization described in step 3 and the step 4 argonaut welding is 12.0～12.4V.
5. voltage-stablizer electrical heating elements sleeve pipe as claimed in claim 1 and its transition spool piece automatic welding method for welding, it is characterized in that, the wire feed rate of described impulsive synchronization wire feed argonaut welding is 500～600mm/min, and welding wire 0.5～1mm, angle of leaving tungsten electrode top 2～2.5mm, welding wire and tungsten electrode above the tungsten electrode of welding gun are 50～70 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910195056A CN101653857A (en) | 2009-09-03 | 2009-09-03 | Automatic welding method of electrically heated element bushing of voltage stabilizer and reducing bushing of electrically heated element bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910195056A CN101653857A (en) | 2009-09-03 | 2009-09-03 | Automatic welding method of electrically heated element bushing of voltage stabilizer and reducing bushing of electrically heated element bushing |
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| CN101653857A true CN101653857A (en) | 2010-02-24 |
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| CN200910195056A Pending CN101653857A (en) | 2009-09-03 | 2009-09-03 | Automatic welding method of electrically heated element bushing of voltage stabilizer and reducing bushing of electrically heated element bushing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317211A (en) * | 2013-05-15 | 2013-09-25 | 长春轨道客车股份有限公司 | All-position TIG automatic welding technology method for framework side cross beam circular tube |
| CN109262204A (en) * | 2018-09-14 | 2019-01-25 | 中核核电运行管理有限公司 | A kind of a full set of technique of nuclear power plant's voltage-stablizer electrical heating elements scene replacement |
| CN109277670A (en) * | 2018-09-14 | 2019-01-29 | 中核核电运行管理有限公司 | A kind of automatic filler wire welding technique of nuclear power plant's voltage-stablizer electrical heating elements |
| CN110871301A (en) * | 2018-09-04 | 2020-03-10 | 中国石化工程建设有限公司 | Tungsten inert gas shielded welding method for nickel-based alloy furnace tube |
-
2009
- 2009-09-03 CN CN200910195056A patent/CN101653857A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317211A (en) * | 2013-05-15 | 2013-09-25 | 长春轨道客车股份有限公司 | All-position TIG automatic welding technology method for framework side cross beam circular tube |
| CN110871301A (en) * | 2018-09-04 | 2020-03-10 | 中国石化工程建设有限公司 | Tungsten inert gas shielded welding method for nickel-based alloy furnace tube |
| CN109262204A (en) * | 2018-09-14 | 2019-01-25 | 中核核电运行管理有限公司 | A kind of a full set of technique of nuclear power plant's voltage-stablizer electrical heating elements scene replacement |
| CN109277670A (en) * | 2018-09-14 | 2019-01-29 | 中核核电运行管理有限公司 | A kind of automatic filler wire welding technique of nuclear power plant's voltage-stablizer electrical heating elements |
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Open date: 20100224 |