CN106493454B - The arc manipulation method of operation is welded in magnetic field environment - Google Patents
The arc manipulation method of operation is welded in magnetic field environment Download PDFInfo
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- CN106493454B CN106493454B CN201610939384.2A CN201610939384A CN106493454B CN 106493454 B CN106493454 B CN 106493454B CN 201610939384 A CN201610939384 A CN 201610939384A CN 106493454 B CN106493454 B CN 106493454B
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- welding
- arc
- magnetic field
- molten bath
- manipulation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
Abstract
The invention discloses a kind of influences that can reduce magnetic field to welding arc, prevent electric arc from generating the arc manipulation method for welding operation in the magnetic field environment of arc blow；It belongs to welding production technical field in the electrolytic cell of chemical industry equipment and surrounding magnetic field.The arc manipulation method of operation is welded in the magnetic field environment, and is included the following steps：1) welding rod containing cellulose coating is selected；70V and DC welder with thrust function are more than using floating voltage；2) anode of weldment and welding machine is connected, the cathode of soldering turret and welding machine connects；3) push current is selected as to the upper limit value of DC welder push current range；4) welding arc shorted contacts, current interruption weldering operation arc manipulation；Current interruption welds operating frequency control in 40~50 times/min；Using the arc manipulation method for welding operation in the magnetic field environment, influence of the magnetic field to welding arc can be effectively reduced, it is therefore prevented that electric arc generates arc blow, and welding pool size is easy to control, and the tow sides forming of weld seam is good.
Description
Technical field
The present invention relates to welding production technical field in the electrolytic cell of chemical industry equipment and surrounding magnetic field, especially a kind of magnetic field
The arc manipulation method of operation is welded in environment.
Background technology
It is well known, it is welded in the environment of no magnetic field, following welding technique often may be used：
1、《Welding technique》05th phase in 2000, welding electrode arc welding operate " basic four methods ", and four kinds are summarised not in document
With the technology and arc manipulation method of position test plate (panel) backing welding current interruption operation.Downhand welding position uses 2 Breakdown Methods；Vertical position welding bit manipulation arc manipulation
When do lateral linear re-ciprocating motion；After horizontal position welding position is using fusing groove root at the molten hole of welding rod arc breakdown up and down root face, return
Hook the operation arc manipulation of arc extinguishing；Weld in the overhead position position by electric arc blowing force will the droplet transfer to base material when, by root push up send arc manipulation to grasp
Make.Its advantage is that：The bottoming current interruption maneuver of these four different locations, can control well backing weld seam tow sides forming and
Reinforcement.
2、《Welding technique》The S1 phases in 2010 " face upward plate arc extinguishing capping welding rod arc welding operations method ", are described in document
When docking overhead welding plate cosmetic welding, operating method is welded in a kind of current interruption of welding electrode arc welding.In molten bath and fill and lead up a layer melt run up-igniting
After electric arc, most wide direction arc manipulation of the skew lines to oval molten bath is walked, and observes molten wide and is consistent with a upper molten bath most wide end,
It then proceedes to take the air line slowly to other side molten bath most wide end arc manipulation, fuses good rapid arc extinguishing after keeping equivalent width.On one side
The starting the arc is primary, alternately, it is desirable that has certain arc length, it is ensured that electric arc scatters in horn-like.Its advantage is that：It can control well
The reinforcement height of plate capping layer weld seam is faced upward, and welding bead is smooth, beautiful, and is not likely to produce undercut defect.
When carrying out the electric arc welding of magnetic material in the environment for having high-intensity magnetic field, due to the effect of magnetic field force, welding arc
It is unable to normal combustion, welding quality is very poor, and appearance can not also shape.
In research at home and abroad, there are many about the measure taken and method when being welded in magnetic field environment, but all
More complicated or dumb convenience, puts into practice, effect is undesirable through site welding.In the magnesium electrolysis workshop for producing titanium sponge, because of electricity
The current strength in slot production process is solved up to 180KA, larger electromagnetic field is generated in electrolytic cell and energization busbar surrounding, and
Between multiple electrolytic cells and the distance between energization busbar is all closer, and mutual magnetic field can be superimposed, and forms electrolytic cell and mother
The size and Orientation of the magnetic field intensity of each point is all uneven around line, after testing magnetic field intensity maximum reach 300 (G) Gausses with
On.Welding material and electric arc droplet transfer when these magnetic fields can be to arc welding, which generate, to be seriously affected, common arc welding method
It can not be welded, it is next difficult to being safeguarded in workshop, overhauling welded bands.
Invention content
Technical problem to be solved by the invention is to provide a kind of influences that can reduce magnetic field to welding arc, it is therefore prevented that
Electric arc generates arc blow, meets in the environment for having magnetic field in the magnetic field environment of the site welding operation application of magnetic metal material
Weld the arc manipulation method of operation.
The technical solution adopted by the present invention to solve the technical problems is：The arc manipulation method of operation is welded in magnetic field environment,
Include the following steps：
1) welding rod containing cellulose coating is selected；70V and direct current with thrust function are more than using floating voltage
Welding machine；
2) anode of weldment and welding machine is connected, the cathode of soldering turret and welding machine connects；
3) push current is selected as to the upper limit value of DC welder push current range；
4) soldering turret is pressed from both sides into upper welding rod, welding arc shorted contacts, current interruption weldering operation arc manipulation；Current interruption welds operating frequency control and exists
40~50 times/min；
It when back cover layer current interruption operates, is welded using flap, every, the welding bead molten bath fish scale weld tabs of formation uses zigzag arc manipulation
Method is welded, first by welding rod point in the root of weld seam, force down electric arc do it is slight swing diagonally forward it is primary after, return in weld seam
Between arc extinguishing；Weld seam forms bottom welding bead after the completion of sealing backing weld；
When filled layer, capping layer current interruption operation, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs of formation uses
Zigzag manipulation of electrode welds, and ignites electric arc in molten bath centre position, the center shorted contacts molten bath of welding rod upper contact is retreaded be flapped toward before
After swinging once, arc extinguishing among molten bath is then laterally returned to.
Further, it is welded using zigzag manipulation of electrode in capping layer current interruption operation welding process in step 4)
It is as follows：
Behind welding rod shorted contacts molten bath, when the center of welding rod upper contact is tiltedly swung at bevelled edge 2mm, immediately again tiltedly
It swings at the 2mm away from groove other edge, then laterally returns to arc extinguishing among molten bath.
The beneficial effects of the invention are as follows：The arc manipulation method of operation is welded in magnetic field environment of the present invention in step 1)
Using cellulose covered electrode, since the gas blowing force of cellulose covered electrode welding arc is big, longitudinal transition power of electric arc compared with
Greatly, role and influence of certain electromagnetic force to the electric arc droplet transfer can be overcome；It then will be by step 2) and step 3)
Weldment is attached with DC welder, while being chosen to the push current of direct current welding；Finally, while in step 4)
In take welding arc shorted contacts, current interruption weldering operation arc manipulation；Current interruption welds operating frequency control in 40~50 times/min；Back cover
When layer, filled layer, capping layer current interruption operation, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs of formation uses zigzag
The welding manner of manipulation of electrode is effectively further reduced in this way so as to reduce magnetic field to the action time of electric arc droplet transfer
Influence of the magnetic field to welding arc, it is therefore prevented that electric arc generates arc blow, and welding pool size is easy to control, weld seam it is positive and negative
Two sides forming is good.
Description of the drawings
Fig. 1 is longitudinal measure arc manipulation schematic diagram in the embodiment of the present invention；
Fig. 2 is transverse weld arc manipulation schematic diagram in the embodiment of the present invention；
Fig. 3 is the partial enlarged view of A in Fig. 1；
Fig. 4 is the partial enlarged view of B in Fig. 2；
It is indicated in figure：1- welding rods, 2- bottom welding beads, 3- fish scale weld tabs.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
It is described as shown in Figure 1 to Figure 4, the arc manipulation method of operation is welded in magnetic field environment of the present invention, is included the following steps：
1) welding rod 1 containing cellulose coating is selected；70V and direct current with thrust function are more than using floating voltage
Welding machine；
2) anode of weldment and welding machine is connected, the cathode of soldering turret and welding machine connects；
3) push current is selected as to the upper limit value of DC welder push current range；
4) soldering turret is pressed from both sides into upper welding rod 1, welding arc shorted contacts, current interruption weldering operation arc manipulation；Operating frequency control is welded in current interruption
In 40~50 times/min；
It when back cover layer current interruption operates, is welded using flap, every, the welding bead molten bath fish scale weld tabs 3 of formation is transported using zigzag
The welding of method, first by 1 point of welding rod in the root of weld seam, force down electric arc do it is slight swing diagonally forward it is primary after, return to weldering
The intermediate arc extinguishing of seam；Weld seam forms bottom welding bead 2 after the completion of sealing backing weld；
When filled layer, capping layer current interruption operation, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs 3 of formation is adopted
It is welded with zigzag manipulation of electrode, is ignited electric arc in molten bath centre position, retread pendulum for the center shorted contacts molten bath of 1 upper contact of welding rod
After swinging forward once, arc extinguishing among molten bath is then laterally returned to.
Welding rod 1 of the selection containing cellulose coating can enhance the blowing force of welding arc in step 1).Using unloaded electricity
Pressure is more than 70V and the DC welder with thrust function；So as to improve the stability of striking performance and arc burning, prevent
Only when electric arc short circuiting transfer, there is adhesion welding rod phenomenon.
The anode of weldment and welding machine is connected in step 2), the cathode of soldering turret and welding machine connects；So as to enhance weldering
Connect the deflection and outspoken nature of electric arc.
In step 3), push current is selected as to the upper limit value of DC welder push current range；Select larger push away
Power electric current helps blowing force so as to increase welding arc.
In step 4), soldering turret is pressed from both sides into upper welding rod 1, welding arc shorted contacts, current interruption weldering operation arc manipulation；Current interruption weldering operation
FREQUENCY CONTROL is in 40~50 times/min；
It when particularly the current interruption of back cover layer operates, is welded using flap, every, the welding bead molten bath fish scale weld tabs 3 of formation uses
Zigzag manipulation of electrode welds, first by 1 point of welding rod in the root of weld seam, force down electric arc do it is slight swing diagonally forward it is primary after,
Return to arc extinguishing among weld seam；Weld seam forms bottom welding bead 2 after the completion of sealing backing weld；
When filled layer, capping layer current interruption operation, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs 3 of formation is adopted
It is welded with zigzag manipulation of electrode, is ignited electric arc in molten bath centre position, retread pendulum for the center shorted contacts molten bath of 1 upper contact of welding rod
After swinging forward once, arc extinguishing among molten bath is then laterally returned to.
As shown in Figures 1 to 4, when welding filled layer, when welding forms fish scale weld tabs 3, a starting the arc and receipts are carried out
Arc, as shown in figure 3, welding schematic diagram for longitudinal measure arc manipulation monolithic weld tabs 3, arcing point is C points, and receipts acnode is D points, from C points
Zigzag manipulation of electrode is used to D points.
As shown in figure 4, transverse weld arc manipulation monolithic weld tabs 3 welds schematic diagram, arcing point is E points, and receipts acnode is F points, from E
Point uses zigzag manipulation of electrode to F points.
Above-mentioned welding method is used in step 4, and since welding arc is low in operating process, electric arc is in molten bath pivot
Amplitude is little and when being welded using flap, a starting the arc is carried out per a piece of molten bath fish scale weld tabs 3 and receives arc, while current interruption weldering
Operating frequency is controlled in 40~50 times/min；So that the residence time is short, reduce work of the magnetic field to the electric arc droplet transfer when
With the time, influence of the magnetic field to welding arc can be efficiently reduced, prevents arc blow, and welding pool system easy to control in size,
Tow sides forming is good.
In conclusion the arc manipulation method for welding operation in magnetic field environment of the present invention uses cellulose in step 1)
The welding rod 1 of coating, since the gas blowing force of cellulose covered electrode welding arc is big, longitudinal transition power of electric arc is larger, can be with
Overcome role and influence of certain electromagnetic force to the electric arc droplet transfer；Then in step 2) and step 3) by welded part with
The anode of DC welder is attached, while being chosen to the push current of direct current welding；Finally, it is taken in step 4)
Welding arc shorted contacts, current interruption weldering operation arc manipulation；Current interruption welds operating frequency control in 40~50 times/min；Back cover layer, filling
When layer, capping layer current interruption operation, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs 3 of formation uses zigzag manipulation of electrode
Welding manner effectively further reduce magnetic field in this way so as to reduce magnetic field to the action time of electric arc droplet transfer
Influence to welding arc, it is therefore prevented that electric arc generates arc blow, and welding pool size is easy to control, the tow sides of weld seam at
Shape is good.
In order to ensure the welding quality of weld seam, further, adopted in capping layer current interruption operation welding process in step 4)
It is welded and is as follows with zigzag manipulation of electrode：
Behind 1 shorted contacts molten bath of welding rod, when the center of 1 upper contact of welding rod is tiltedly swung at bevelled edge 2mm, immediately again
It tiltedly swings at the 2mm away from groove other edge, then laterally returns to arc extinguishing among molten bath.Since capping layer is located at the table of weld seam
Layer, capping layer needs to form preferable transition with weldment, therefore uses above-mentioned welding method, enables to quality of weld seam molding
It is good；Avoiding the center of welding rod 1 from being too near to bevelled edge makes bevelled edge generate undercut defect at high temperature, influences to weld matter
Amount.
Embodiment 1
Using the arc manipulation method for welding operation in magnetic field environment of the present invention, to carrying out magnetic material in magnetic field environment
The arc welding of material；Its specific implementation step includes the following steps：
1, the welding rod 1 containing cellulose coating is selected；70V and direct current with thrust function are more than using floating voltage
Welding machine；
2, the anode of weldment and welding machine is connected, the cathode of soldering turret and welding machine connects；
3, push current is selected as to the upper limit value of DC welder push current range；
4, soldering turret is pressed from both sides into upper welding rod 1, welding arc shorted contacts, current interruption weldering operation arc manipulation；Operating frequency control is welded in current interruption
In 40~50 times/min；
When back cover layer current interruption operates, welded using flap, welding bead shaping surface is as flap, every, the welding bead molten bath of formation
Fish scale weld tabs 3 is welded using zigzag manipulation of electrode, is first forced down electric arc and is done slight oblique front left 1 point of welding rod in the root of weld seam
After right swing is primary, arc extinguishing among weld seam is returned to；Weld seam forms bottom welding bead 2 after the completion of sealing backing weld；Filled layer current interruption is grasped
When making, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs 3 of formation is welded using zigzag manipulation of electrode, among molten bath
Ignite electric arc for position, 1 center shorted contacts molten bath of welding rod retread be flapped toward front left and right swing it is primary after, then laterally return in molten bath
Between arc extinguishing；It is welded and is as follows using zigzag manipulation of electrode in capping layer current interruption operation welding process：
The center of 1 shorted contacts molten bath contact of welding rod is retreaded when swinging at bevelled edge 2mm, is swung to immediately and tiltedly
At 2mm away from groove other edge, arc extinguishing among molten bath is then laterally returned to.
Embodiment 2, embodiment 3, comparative example 1 and comparative example 2 are all made of the method in embodiment 1, change direct current therein
Operating frequency, the parameter specifically changed and corresponding technique effect are welded in welding machine floating voltage and current interruption, are shown in Table 1；
Table 1
Note：Magnetic blow-out refers to the phenomenon that electric arc deviates welding rod axis partially；Generally verified in test weld.Because being unable to measure electric arc
Deviate the distance of welding rod axis, therefore generally observe by the naked eye whether electric arc deviates welding rod axis, to judge whether occur
Magnetic blow-out is inclined.Success rate refers to the percentage that welding obtains qualified products and whole welding products.
The arc manipulation method of operation is welded in magnetic field environment of the present invention as can be seen from the above table；When DC welder zero load
Voltage select 70V and 70V or more and current interruption weldering operating frequency for 40~50 times/min when, be not in magnetic in welding process
Blow inclined phenomenon；It can ensure the normal weld under magnetic field environment.
Claims (2)
1. welding the arc manipulation method of operation in magnetic field environment, which is characterized in that include the following steps：
1) welding rod (1) containing cellulose coating is selected；Using floating voltage be more than 70V and with thrust function direct current weldering
Machine；
2) anode of weldment and welding machine is connected, the cathode of soldering turret and welding machine connects；
3) push current is selected as to the upper limit value of DC welder push current range；
4) welding arc shorted contacts, current interruption weldering operation arc manipulation；Current interruption welds operating frequency control in 40~50 times/min；
When back cover layer current interruption operates, welded using flap, welding bead shaping surface is as flap, every, the welding bead molten bath fish scale of formation
Weld tabs (3) is welded using zigzag manipulation of electrode, is first forced down electric arc and is done slight oblique front left welding rod (1) point in the root of weld seam
After right swing is primary, arc extinguishing among weld seam is returned to；Weld seam forms bottom welding bead (2) after the completion of sealing backing weld；
When filled layer, capping layer current interruption operation, it is all made of flap weldering, every, the welding bead molten bath fish scale weld tabs (3) of formation uses Z
Font manipulation of electrode welds, and ignites electric arc in molten bath centre position, and welding rod (1) center shorted contacts molten bath, which is retreaded, is flapped toward front left and right pendulum
After moving once, arc extinguishing among molten bath is then laterally returned to.
2. welding the arc manipulation method of operation in magnetic field environment as described in claim 1, it is characterised in that：The capping in step 4)
It is welded and is as follows using zigzag manipulation of electrode in layer current interruption operation welding process：
The center of welding rod (1) shorted contacts molten bath contact is retreaded when swinging at bevelled edge 2mm, swing to immediately and tiltedly away from
At the 2mm of groove other edge, arc extinguishing among molten bath is then laterally returned to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610939384.2A CN106493454B (en) | 2016-10-25 | 2016-10-25 | The arc manipulation method of operation is welded in magnetic field environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610939384.2A CN106493454B (en) | 2016-10-25 | 2016-10-25 | The arc manipulation method of operation is welded in magnetic field environment |
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| Publication Number | Publication Date |
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| CN106493454A CN106493454A (en) | 2017-03-15 |
| CN106493454B true CN106493454B (en) | 2018-07-27 |
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Families Citing this family (1)
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| CN108941857B (en) * | 2018-07-26 | 2020-11-27 | 中车青岛四方机车车辆股份有限公司 | MAG transverse welding method and MAG transverse welding process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2233641C3 (en) * | 1972-07-08 | 1974-12-05 | Kobe Steel Ltd., Kobe (Japan) | Method and device for automatic arc welding with pulsating current |
| CN2787356Y (en) * | 2005-05-19 | 2006-06-14 | 渤海船舶重工有限责任公司 | Power supply device for electromagnet for eliminating electric arc magnetic blow of austenitic welding rod |
| US9073137B2 (en) * | 2012-03-02 | 2015-07-07 | Lincoln Global, Inc. | Work current switching to eliminate arc blow |
| US10239145B2 (en) * | 2012-04-03 | 2019-03-26 | Lincoln Global, Inc. | Synchronized magnetic arc steering and welding |
| CN203184801U (en) * | 2013-02-28 | 2013-09-11 | 广州市长胜焊接设备实业有限公司 | Automatic thrust arc striking device of digital inversion arc welder |
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