CN108994427A - A kind of direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument - Google Patents
A kind of direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument Download PDFInfo
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- CN108994427A CN108994427A CN201811057043.8A CN201811057043A CN108994427A CN 108994427 A CN108994427 A CN 108994427A CN 201811057043 A CN201811057043 A CN 201811057043A CN 108994427 A CN108994427 A CN 108994427A
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- welding
- magnetic field
- expansion instrument
- magnetic
- conductive part
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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
- B23K9/08—Arrangements or circuits for magnetic control of the arc
Abstract
The present invention is a kind of direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument, this kind of method is respectively arranged with magnetic field expansion instrument in the weldment two sides that assembly positioning is completed, the output head anode and cathode of DC welder are connect with welding rod and magnetic field expansion instrument respectively, make in welding process, welding current is formed by magnetic field and is located at weld seam periphery, the interference of electromagnetic field is not formed to the electric arc for playing segmental arc and blow-out section region of weld seam, and then the generated welding quality defects of arc blow can be eliminated.
Description
Technical field
The present invention is to be related to welding technology field, and specifically a kind of direct current using externally-applied magnetic field expansion instrument welds weldering
Connect arc blow control method.
Background technique
It is well known that in direct current welding process, when will cause weld seam welding due to the welding magnetic field being inherently present from segmental arc
Effect with the welding arc of blow-out section by arc blow, so that welding quality generates adverse effect.Existing control welding
In the method for arc blow, the method and measure generally used mainly has:
1. general can significantly reduce influence of the arc blow to weld seam using AC power source using exchange weldering, high speed alternation
Electric current can generate vortex, and the magnetic field strength for causing arc blow is weakened in the magnetic field for being vortexed generation significantly.
2. using Double Wire Welding, the magnetic field generated using a DC power supply and an AC power source, high speed alternation, in base material
In cause eddy current loss, generate the lesser effect of magnetic field strength.
3. Scott nature commutation method is used, using two AC power source double wire weldings, when 80 ° of phase difference of two power supplys
At ~ 90 °, it is possible to reduce the influence etc. of arc blow.
Listed above is usually the major measure that automatic welding is taken, and generally certain effect can be obtained, in manual arc
When weldering operation generally in the following ways:
1. using lesser electric current；
2. changing the position of ground line, to adjust being uniformly distributed for the magnetic line of force；
3. adjusting the inclination angle of welding rod welding to reduce the influence of arc blow；
4. the ferromagnetic material of symmetric magnetic field is placed, so that the ferromagnetic material around electric arc is evenly distributed；
5. reducing the remanent magnetism on workpiece, the measure controlled is heated using Local heating method；
6. overcoming influence etc. of the magnetic field to arc blow with anti-demagnetization method.
The patented technology of above various methodologies and some externally-applied magnetic fields control spatter loss coefficient and various at home and abroad
Overcome in influence research of the arc blow to manual electric arc welding electric arc, generally all operates less flexibly and conveniently, and
Ideal state is not achieved in effect.Bad utilization in actual operation, and cannot effectively expand the magnetic force in arc blow
Line distribution, overcomes the effect of arc blow to be good or bad, effect is unstable, cannot be distributed welding arc field homogeneity.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides a kind of direct current weldering welding electricity using externally-applied magnetic field expansion instrument
Arc arc blow control method.
To achieve the above object, the invention adopts the following technical scheme:
A kind of direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument, it is characterised in that: using outer
Add magnetic field expansion instrument that the weld seam of institute's welding is completely disposed to the magnetic field white space of welding current formation, the welding quality of weld seam
It is not influenced by the formed magnetic field of welding current, the specific steps are as follows:
Step 1, welding machine uses DC welder, and welding rod uses acidic electrode or basic electrode；
Step 2, two steel plate components to be welded are mutually organized pair, the form of the two steel plates assembly V-shaped grooves of tack weld to be welded；
Step 3, the weldment two sides that assembly positioning is completed are respectively arranged with magnetic field expansion instrument, and the magnetic field expansion instrument and weld seam hang down
Directly；
Step 4, the anode of DC welder output end and cathode are connect with welding rod and magnetic field expansion instrument respectively；
Step 5, the technological parameter of welding welding current is adjusted；
Step 6, prime coat welding is carried out to the weld seam after assembly positioning；
Step 7, layer welding is filled to the weld seam after assembly positioning；
Step 8, coating welding is carried out to the weld seam after assembly positioning.
The magnetic field expansion instrument includes magnetic conductive part, and magnetic conductive part rectangular plate, magnetic conductive part side wall both ends are fixed
Folder is installed.
Steel plate to be welded is fixedly connected by the folder using fastening bolt with magnetic conductive part, the folder and steel plate to be welded
Junction be located at one side edge of the steel plate to be welded far from weld seam, the cathode of DC welder output end expands with two magnetic fields respectively
The magnetic conductive part of device connects, and the cathode of the DC welder output end and the junction of magnetic conductive part are located at magnetic conductive part far from folder
The central location of one side edge.
The welding manner used in the step 6 ~ 8 includes downhand welding, vertical position welding, horizontal position welding, overhead welding.
The thickness range of the steel plate to be welded is 1 ~ 16mm, and the range of grade of V-shaped groove weld is 25 ° ~ 45 °.
Externally-applied magnetic field expansion instrument in a kind of direct current weldering welding process, it is characterised in that: including magnetic conductive part and folder, institute
The magnetic conductive part rectangular plate stated, the side wall both ends of magnetic conductive part side are fixedly installed with folder, and the folder includes U-shaped
Card and fixing bolt, U-shaped card are fastened on steel plate to be welded by fixing bolt, side of the magnetic conductive part far from folder side
Edge is provided with power connector end, the output end connection of the power connector end and electric welding machine.
The central location of magnetic conductive part side edge is arranged in the power connector end, and the folder is conductive using magnetic conduction
Material is made, and the magnetic conductive part is detachably connected by folder and steel plate to be welded.
A kind of beneficial effect of the direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument of the present invention
Fruit is: can be effectively solved the influence that arc blow plays segmental arc and blow-out section to direct current welding line, by the way that additional magnetic is arranged
Field expansion instrument, changes the path of electric current in welding process, and then changes the intrinsic magnetic field of welding current formation, increases magnetic field
After expansion instrument, the weld seam in welding region and the peripheral magnetic induction line in magnetic field are without intersection, at this point, welding weld seam plays segmental arc and blow-out
Section and whole weld seam section will not influence and then eliminate arc blow side effect by magnetic field.
Detailed description of the invention
Fig. 1 is the knot that a kind of direct current using externally-applied magnetic field expansion instrument of the present invention welds arc magnetic blow control device
Composition.
Fig. 2 is that a kind of direct current using externally-applied magnetic field expansion instrument of the present invention welds arc magnetic blow control device magnetic field
The structure chart of expansion instrument.
The magnetic induction line schematic diagram in magnetic field when Fig. 3 welds for the weldment of no magnetic field expansion instrument.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.
As shown in figure 3, weld seam both ends are respectively segmental arc and the blow-out section of welded seam in figure, using traditional welding side
Formula, electric current formed intrinsic magnetic field when welding can to weld seam play segmental arc and blow-out section forms interference, i.e., end of welding bead can be worn
The magnetic induction line in magnetic field is crossed, in magnetic field, this magnetic field will cause welding arc and generate different degrees of arc blow phenomenon, can lead
Cause welding arc extremely unstable, welding internal bat X-ray image, there are major quality defects, so that the region is unable to get effectively
Quality assurance.Therefore a kind of novel welding procedure is needed, guarantees that whole weld seam is not inside magnetic field.
As shown in Figure 1, a kind of direct current using externally-applied magnetic field expansion instrument welds arc magnetic blow control method, it is special
Sign is: weld seam 4 being completely disposed inside the magnetic field of welding current formation using externally-applied magnetic field expansion instrument, the weld seam is not
It is influenced by the formed magnetic field of welding current, the specific steps are as follows:
Step 1, welding machine uses DC welder 1, and welding rod uses acidic electrode or basic electrode；
Step 2, two steel plate components to be welded are mutually organized pair, the form of the two steel plates assembly V-shaped grooves of tack weld to be welded；
Step 3, the weldment two sides that assembly positioning is completed are respectively arranged with magnetic field expansion instrument, and the magnetic field expansion instrument and weld seam hang down
Directly；
Step 4, the anode of 1 output end of DC welder is connect with welding rod, and cathode is connect with magnetic field expansion instrument respectively；
Step 5, the technological parameter of welding current is adjusted；
Step 6, prime coat welding is carried out to the weld seam after assembly positioning；
Step 7, layer welding is filled to the weld seam after assembly positioning；
Step 8, coating welding is carried out to the weld seam after assembly positioning.
In the present embodiment, the output head anode of DC welder 1 is connect with welding rod 3 by conductor wire 2, DC welder 1 it is defeated
Outlet cathode is connect with magnetic field expansion instrument 5 by conductor wire 2.In addition, can also be the negative pole of output end and welding rod of DC welder 1
3 are connected by conductor wire 2, and the output head anode of DC welder 1 is connect with magnetic field expansion instrument 5 by conductor wire 2.
In the present embodiment, magnetic field expansion instrument includes magnetic conductive part, magnetic conductive part rectangular plate, and magnetic conductive part side wall both ends are equal
It is fixedly installed with folder.
In the present embodiment, steel plate to be welded is fixedly connected using fastening bolt by folder with magnetic conductive part, the folder and to
The junction of welding steel plate is located at one side edge of the steel plate to be welded far from weld seam, the cathode of 1 output end of DC welder respectively with two
The magnetic conductive part of magnetic field expansion instrument connects, and the cathode of 1 output end of DC welder and the junction of magnetic conductive part are located at magnetic conduction
Central location of the part far from folder one side edge.
In the welding process, the flow direction of electric current can change this kind of structure to the periphery, and then expand electric current shape
At the coverage in magnetic field, whole weld seam is set to fall into the inside of magnetic field influence area without field region, whole weld seam includes weld seam
Play segmental arc and blow-out section and will not be influenced by magnetic field, ensure that weldquality.
The side edge central location of the separate folder side of the output end of DC welder 1 and magnetic conductive part is connected, is presented
The distance between the magnetic induction line two-end-point of spheroid shape is longer, makes the company of welding machine 1 output end and magnetic conductive part as far as possible when in use
The place of connecing is on same straight line with weld seam and does not wind, and more effectively weld seam can be placed in magnetic field without field region, protected
Card welding weld seam is not interfered by magnetic field.
In the present embodiment, the welding manner used in step 6 ~ 8 includes but is not limited to downhand welding, vertical position welding, horizontal position welding, overhead welding, packet
Include all welding spatial positions.
The thickness range of the steel plate to be welded is 1 ~ 16mm, and the range of grade of V-shaped groove weld is 25 ° ~ 45 °, excellent
The gradient of the double V-groove weld seam of choosing is 32 °.
In the present embodiment, the single-piece of steel plate to be welded is having a size of 300*150mm.
As shown in Fig. 2, the externally-applied magnetic field expansion instrument in a kind of direct current weldering welding process, it is characterised in that: including magnetic conduction
The side wall both ends of part 6 and folder 7, the magnetic conductive part rectangular plate, magnetic conductive part side are fixedly installed with folder, described
Folder include U-shaped card and fixing bolt, U-shaped card is fastened on steel plate to be welded by fixing bolt, and the magnetic conductive part is separate
The side edge of folder side is provided with power connector end, and the power connector end is connect with the output end of electric welding machine 1.
The central location of magnetic conductive part side edge is arranged in the power connector end, and the folder is conductive using magnetic conduction
Material is made, and the magnetic conductive part is detachably connected by folder and steel plate to be welded.
It should be noted that the term of such as "upper", "lower", "left", "right", "front", "rear" cited in invention, also
Only being illustrated convenient for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in nothing
Under essence change technology contents, when being also considered as the enforceable scope of the present invention.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (7)
1. a kind of direct current using externally-applied magnetic field expansion instrument welds arc magnetic blow control method, it is characterised in that: use
The weld seam of institute's welding is completely disposed at the magnetic field white space of welding current formation, the welding matter of weld seam by externally-applied magnetic field expansion instrument
Amount is not influenced by the formed magnetic field of welding current, the specific steps are as follows:
Step 1, welding machine uses DC welder, and welding rod uses acidic electrode or basic electrode；
Step 2, two steel plate components to be welded are mutually organized pair, the form of the two steel plates assembly V-shaped grooves of tack weld to be welded；
Step 3, the weldment two sides that assembly positioning is completed are respectively arranged with magnetic field expansion instrument, and the magnetic field expansion instrument and weld seam hang down
Directly；
Step 4, the anode of DC welder output end and cathode are connect with welding rod and magnetic field expansion instrument respectively；
Step 5, the technological parameter of welding current when adjusting welding；
Step 6, prime coat welding is carried out to the weld seam after assembly positioning；
Step 7, layer welding is filled to the weld seam after assembly positioning；
Step 8, coating welding is carried out to the weld seam after assembly positioning.
2. a kind of direct current using externally-applied magnetic field expansion instrument as described in claim 1 welds arc magnetic blow controlling party
Method, it is characterised in that: the magnetic field expansion instrument includes magnetic conductive part, magnetic conductive part rectangular plate, magnetic conductive part side wall both ends
It is fixedly installed with folder.
3. a kind of direct current using externally-applied magnetic field expansion instrument as claimed in claim 2 welds arc magnetic blow controlling party
Method, it is characterised in that: steel plate to be welded is fixedly connected using fastening bolt by the folder with magnetic conductive part, the folder and to
The junction of welding steel plate is located at one side edge of the steel plate to be welded far from weld seam, the cathode of DC welder output end respectively with two magnetic
The magnetic conductive part connection of expansion instrument, it is remote that the cathode of the DC welder output end with the junction of magnetic conductive part is located at magnetic conductive part
Central location from folder one side edge.
4. a kind of direct current using externally-applied magnetic field expansion instrument as described in claim 1 welds arc magnetic blow controlling party
Method, it is characterised in that: the welding manner used in the step 6 ~ 8 includes downhand welding, vertical position welding, horizontal position welding, overhead welding.
5. a kind of direct current using externally-applied magnetic field expansion instrument as described in claim 1 welds arc magnetic blow controlling party
Method, it is characterised in that: the thickness range of the steel plate to be welded is 1 ~ 16mm, the range of grade of V-shaped groove weld is 25 ° ~
45°。
6. the externally-applied magnetic field expansion instrument in a kind of direct current weldering welding process, it is characterised in that: described including magnetic conductive part and folder
Magnetic conductive part rectangular plate, the side wall both ends of magnetic conductive part side are fixedly installed with folder, and the folder includes U-shaped card
And fixing bolt, U-shaped card are fastened on steel plate to be welded by fixing bolt, side side of the magnetic conductive part far from folder side
Edge is provided with power connector end, the output end connection of the power connector end and electric welding machine.
7. the externally-applied magnetic field expansion instrument in a kind of direct current weldering welding process as claimed in claim 6, it is characterised in that: described
Power connector end the central location of magnetic conductive part side edge is set, the folder is made of magnetic conduction conductive material, institute
The magnetic conductive part stated is detachably connected by folder and steel plate to be welded realization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811057043.8A CN108994427B (en) | 2018-09-11 | 2018-09-11 | Direct current welding arc magnetic blow control method utilizing external magnetic field expansion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811057043.8A CN108994427B (en) | 2018-09-11 | 2018-09-11 | Direct current welding arc magnetic blow control method utilizing external magnetic field expansion device |
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| CN108994427A true CN108994427A (en) | 2018-12-14 |
| CN108994427B CN108994427B (en) | 2021-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505561A (en) * | 2022-02-24 | 2022-05-17 | 华智焊测高科(苏州)有限公司 | Method and device for correcting electric arc piercing welding magnetic blow by external magnetic field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114505561A (en) * | 2022-02-24 | 2022-05-17 | 华智焊测高科(苏州)有限公司 | Method and device for correcting electric arc piercing welding magnetic blow by external magnetic field |
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