CN211728008U - Arc welding rod and arc welding device - Google Patents
Arc welding rod and arc welding device Download PDFInfo
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- CN211728008U CN211728008U CN201922246802.1U CN201922246802U CN211728008U CN 211728008 U CN211728008 U CN 211728008U CN 201922246802 U CN201922246802 U CN 201922246802U CN 211728008 U CN211728008 U CN 211728008U
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Abstract
The utility model relates to an electric arc welding technical field, in particular to electric arc welding electrode and electric arc welding device. The electric arc welding electrode comprises a core wire assembly and a flux coating wrapped outside the core wire assembly, wherein the core wire assembly comprises a plurality of strands of core wires, and the plurality of strands of core wires are arranged in a twisted mode. The stranded core wires in the core wire assembly are stranded together along a certain direction and with a certain rule, in the welding process, the electric arc spot of every strand of core wire tip is rotatory along the transposition direction, the produced electric arc of stranded core wire can use the center of core wire assembly as the axle spontaneous rotation, the rotation of electric arc can stir the metal under the molten state in the molten bath to promote the flow of metal under the molten state, improve the mobility of molten bath, the mobility of molten bath is good, then beneficial element in the molten bath distributes evenly, welding quality and welding efficiency have been improved.
Description
Technical Field
The utility model relates to an electric arc welding technical field, in particular to electric arc welding electrode and electric arc welding device.
Background
Manual arc welding is a method of welding by using a manually operated welding wire and a workpiece to be welded as two electrodes and melting metal by using arc heat between the welding wire and the workpiece. The manual electric arc welding method has the characteristics of flexible application, strong adaptability to complex working conditions and the like, and plays an irreplaceable role in manufacturing key components of high-end equipment such as nuclear power, maritime work and the like.
The manual electric arc welding is characterized in that a welding power supply, a welding cable, a welding clamp, a welding rod, a weldment and an electric arc form a loop, the welding rod and a workpiece are contacted to ignite the electric arc during welding, then the welding rod is lifted and kept at a certain distance, the electric arc is stably combusted under the condition that the welding power supply provides proper electric arc voltage and welding current, high temperature is generated, and the welding rod and the weldment are locally heated to a molten state. The molten metal at the end of the electrode and the molten weldment metal fuse together to form a molten pool. During welding, the electric arc moves along with the welding rod, liquid metal in a molten pool is gradually cooled and crystallized to form a welding seam, and two welding pieces are welded together.
Conventional arc welding electrodes, which typically include a core wire and a coating surrounding the core wire, have a problem with poor flow of the resulting weld pool.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a core wire and arc welding electrode to solve the poor technical problem of molten bath mobility that the arc welding electrode among the prior art formed.
The utility model provides an electric arc welding electrode, include: the welding core assembly comprises a plurality of strands of welding cores, and the strands of welding cores are arranged in a twisted mode.
Further, the core wire assembly comprises a centerless core wire layer, the centerless core wire layer comprises a plurality of strands of the core wires, and the strands of the core wires are sequentially arranged along the same circumferential direction.
Further, the centerless core wire layer includes three strands of the core wires.
Furthermore, the number of the centerless welding core layers is multiple, and the centerless welding core layers are sequentially arranged from inside to outside along the radial direction of the coating.
Further, the core wire subassembly includes central core wire and peripheral core wire layer, peripheral core wire layer includes the stranded the core wire, the stranded the core wire sets gradually along same circumference, peripheral core wire layer encloses to establish and the transposition sets up outside the central core wire.
Furthermore, the number of the peripheral welding core layers is multiple, the peripheral welding core layers are arranged along the radial direction of the flux coating from inside to outside in sequence, and the multiple strands of the welding cores in the peripheral welding core layers close to the central welding core are attached to the central welding core.
Further, the arc welding electrode also includes a clamping tip formed by an end of the core wire assembly extending beyond the sheath.
Furthermore, a front end chamfer is arranged at one end of the medicine skin far away from the clamping end, and the front end chamfer is 55-65 degrees.
Furthermore, one end of the coating close to the clamping end is provided with a rear end chamfer angle which is 25-35 degrees.
The utility model provides an electric arc welding device, including above-mentioned electric arc welding electrode.
The utility model provides an electric arc welding electrode, be in including core wire subassembly and parcel the outer coating of core wire subassembly, the core wire subassembly includes stranded core wire, stranded the core wire transposition sets up.
The multi-strand core wires in the core wire assembly are stranded together along a certain direction and according to a certain rule, arc spots at the end part of each strand of core wire rotate along the stranded direction along with the combustion of electric arcs, welding rods are melted in the process of electric arc welding, electric arcs generated by the multi-strand core wires can rotate spontaneously by taking the center of the core wire assembly as an axis, and the rotation of the electric arcs can stir metal in a molten state in a molten pool, so that the flowing of the metal in the molten state is promoted, the flowability of the molten pool is improved, the flowability of the molten pool is good, beneficial elements in the molten pool are distributed uniformly, and the welding quality and the welding efficiency are improved.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic illustration of an arc welding electrode according to an embodiment of the present invention;
FIG. 2 is a cut away view of the centerless core layer of the arc welding electrode of FIG. 1 with the core layer being single;
FIG. 3 is a schematic structural view of an arc welding electrode according to another embodiment of the present invention;
FIG. 4 is a cut away view of the outer core layer of the arc welding electrode of FIG. 3, shown in isolation.
In the figure: 10-a core wire assembly; 20-coating; 30-a clamping end; 11-a centerless welded core layer; 12-a central core wire; and 13-welding a core layer at the periphery.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in FIGS. 1-4, the present embodiment provides an arc welding electrode comprising a core wire assembly 10 and a flux sheath 20 wrapped around the core wire assembly 10, the core wire assembly 10 comprising a plurality of core wires stranded together.
In this embodiment, the stranded core wires in the core wire assembly 10 are stranded together along a certain direction and with a certain rule, along with the electric arc burning, the tip electric arc spot of each stranded core wire rotates along the stranded direction, the welding rod melts, the electric arc that the stranded core wire produced can use the center of core wire assembly 10 as the axle spontaneous rotation, the rotation of electric arc can stir the metal under the molten state in the molten bath, thereby promote the flow of metal under the molten state, improve the mobility of molten bath, improve the efficiency of depositing, and then make the beneficial element in the molten bath distribute evenly, and play the effect of refining the crystalline grain, and can make the gas in the metal under the molten state spill over, and then improve welding quality and welding efficiency, and then can satisfy the requirement of high quality equipment manufacturing.
Each core wire may include a single core wire or a plurality of core wires.
The diameters of the multiple wire cores may be partially the same and partially different, or may be the same.
As an alternative to the various configurations of the core wire assembly 10, as shown in fig. 1 and 2, the core wire assembly 10 includes a coreless core layer 11, and the coreless core layer 11 includes a plurality of core wires, and the plurality of core wires are sequentially arranged along the same circumferential direction. There may be gaps between the multiple core wires, or the multiple core wires may be arranged one next to the other.
In this implementation, the stranded core wires in the centerless welding core layer 11 are all in same circumference, that is to say the stranded core wires in the centerless welding core layer 11 are twisted with certain rule along certain direction in same circumference, and the stranded core wires enclose the center department of establishing the same circumference that forms and do not have the core wire setting, and this kind of simple structure can realize few core wire quantity transposition setting.
The plurality of strands of core wires are arranged along the same circumferential direction, which means that the plurality of strands of core wires enclose a circle, the circle enclosed by the plurality of strands of core wires can be generally circular or oval, and the shape enclosed by the plurality of strands of core wires can be arranged according to the thickness, the number and the like of the core wires.
The number of the core wires in the coreless core layer 11 may be two, four, or five, and so on.
Optionally, the number of the core wires in the centerless core layer 11 is three, the three core wires are mutually and spirally wound together, and the core wire assembly 10 with the structure not only can make the molten pool flow effectively, but also has a simple structure and a small total number of core wires.
As shown in fig. 2, the number of the coreless core layers 11 may be one, that is, the coreless core layers 11 in the core assembly 10 are arranged in a single layer, and the structure is simple and the manufacturing is easy.
The number of the coreless cores 11 may also be two, three or more, etc. When the number of the centerless welding core layers 11 is plural, the plural centerless welding core layers 11 are arranged in order from inside to outside in the radial direction of the flux coating 20.
In this embodiment, the distance that a plurality of centerless welding sandwich layers 11 apart from the center of welding rod is all inequality, then in welding rod melting process, multilayer centerless welding sandwich layer 11 can form multilayer electric arc spontaneous rotation, and then can further improve the flow of the molten metal in the molten bath, and is more even to the stirring of molten metal, makes the gas in the molten bath spill over more fully, and then makes welding quality better make welding efficiency higher.
It is to be understood that the diameter of the coreless core 11 is gradually increased in a direction from the center of the core assembly 10 to the sheath 20, and that the plurality of core wires in each coreless core 11 are generally arranged one next to the other, so that the number of core wires in the coreless core 11 is gradually increased.
The arrangement of the twisting directions of the plurality of coreless core layers 11 (the directions in which the plurality of core wires in the coreless core layers 11 rotate around the center line of the core wire assembly 10, i.e., the center line of the welding rod) may be various, for example: the directions of twisting of the plurality of coreless core layers 11 are the same.
For another example: the twisting direction of a portion of the adjacent coreless core 11 is a first direction (e.g., counterclockwise), and the twisting direction of another portion of the adjacent coreless core 11 is a second direction (e.g., clockwise), where the first direction is different from the second direction.
The following steps are repeated: among three adjacent centerless welded core layers 11, the center centerless welded core layer 11 and the two side centerless welded core layers 11 have different twisting directions, and the two side centerless welded core layers 11 have the same twisting direction, for example, the center centerless welded core layer 11 is twisted in the counterclockwise direction, the two side centerless welded core layers 11 are twisted in the clockwise direction, and the like.
As another alternative, as shown in fig. 3 and 4, the core wire assembly 10 includes a central core wire 12 and a peripheral core wire layer 13, the peripheral core wire layer 13 includes a plurality of core wires, the plurality of core wires are sequentially arranged along a circumference, and the peripheral core wire layer 13 is arranged around and twisted around the central core wire 12.
In this embodiment, the central core wire 12 is located on the center line of the core wire assembly 10, i.e. on the center line of the welding rod, and the plurality of core wires in the peripheral core wire layer 13 are arranged around the central core wire 12 in a certain direction and are twisted. The core wire assembly 10 of this configuration has a central core wire 12 to facilitate the stranding process of the peripheral core wire layer 13.
The plurality of strands of core wires are arranged along the same circumferential direction, which means that the plurality of strands of core wires enclose a circle, the circle enclosed by the plurality of strands of core wires can be generally circular or oval, and the shape enclosed by the plurality of strands of core wires can be arranged according to the thickness, the number and the like of the core wires.
The number of the core wires in the peripheral core wire layer 13 may be two, and optionally, the number of the core wires in the peripheral core wire layer 13 is three, four, or five, and the like, and this structure can realize that multiple strands of core wires are arranged one next to the other, which is beneficial to improving the fluidity of the molten pool.
As shown in fig. 4, the number of the peripheral core wire layers 13 may be one, i.e. the core wire assembly 10 comprises one central core wire 12 and one peripheral core wire layer 13, and the structure is simple.
The number of the peripheral solder core layers 13 may be two, three, or four, etc. When the number of the peripheral core wire layers 13 is plural, the plurality of peripheral core wire layers 13 are sequentially arranged from inside to outside along the radial direction of the flux sheath 20, and the plurality of strands of core wires in the peripheral core wire layers 13 close to the central core wire 12 are attached to the central welding.
In this embodiment, every outer peripheral welding sandwich layer 13 is all inequality apart from the distance of central core wire, then in welding rod melting process, multilayer peripheral welding sandwich layer 13 can form multilayer electric arc spontaneous rotation, and then can further improve the flow of the molten metal in the molten bath, and is more even to the molten metal stirring ground, makes the gas in the molten bath spill over more fully, and then makes welding quality better make welding efficiency higher.
It is to be understood that if the peripheral core layers are circular, the diameter of the peripheral core layers 13 is gradually increased along the direction in which the central core 12 is directed toward the sheath 20, and typically, the plurality of core wires in each peripheral core layer 13 are arranged one next to the other, so that the number of core wires in the peripheral core layers 13 is gradually increased.
The arrangement of the twisting directions of the plurality of peripheral core wires 13 (the directions in which the plurality of core wires in the peripheral core wires 13 rotate about the center core wire 12) may be various, for example: the twisting directions of the plurality of peripheral weld core layers 13 are all the same. For another example:
the twisting direction of a part of the adjacently disposed peripheral solder core layers 13 is a first direction (e.g., counterclockwise), the twisting direction of another part of the adjacently disposed peripheral solder core layers 13 is a second direction (e.g., clockwise), and the first direction is different from the second direction.
The following steps are repeated: among three adjacent peripheral core layers 13, the central peripheral core layer 13 and the peripheral core layers 13 on both sides have different twisting directions, and the twisting directions of the peripheral core layers 13 on both sides are the same, for example, the central peripheral core layer 13 is twisted in the counterclockwise direction, the peripheral core layers 13 on both sides are twisted in the clockwise direction, and so on.
As shown in fig. 1 and 3, on the basis of the above embodiment, a clamping end 30 is further provided at one end of the welding rod, so as to facilitate the clamping of the welding rod for welding.
The structure of the handheld end may be various, for example, a metal connecting plate is disposed to connect with one end of the core wire assembly 10 to achieve electrical connection. Optionally, the clamping end 30 is formed by extending one end of the core wire assembly 10 to the outside of the sheath 20, in this embodiment, the core wire assembly 10 and the clamping end 30 are integrally arranged, so that the processing is convenient, the connection is stable, and the stability of welding is facilitated.
On the basis of the above embodiment, further, one end of the wrapper 20 away from the holding end 30 is provided with a front end chamfer, the front end chamfer is 55 ° to 65 °, in this embodiment, the front end chamfer can be any value within the above range such as 55 °, 58 °, 63 ° or 65 °, and the front end chamfer can ensure ignition of the arc.
On the basis of the above embodiment, further, one end of the wrapper 20 close to the holding end 30 is provided with a rear end chamfer, the rear end chamfer is 25 ° to 35 °, in this embodiment, the rear end chamfer may be any value within the above range, such as 25 °, 28 °, 33 ° or 35 °.
Further on above-mentioned embodiment basis, the utility model discloses still provide an arc welding device, including above-mentioned arc welding electrode, still include welding power and the handheld electrode holder of being connected with the welding power electricity, handheld electrode holder is used for the centre gripping welding rod.
In the process of welding a welding piece by using the arc welding device provided by the embodiment, the multi-strand core wires in the core wire assembly 10 in the welding rod can generate self-rotating arcs, and the rotation of the arcs can stir metal in a molten state in the molten pool, so that the flow of the metal in the molten state is promoted, the fluidity of the molten pool is improved, the fluidity of the molten pool is good, beneficial elements in the molten pool are uniformly distributed, and the welding quality and the welding efficiency are improved. The arc welding device provided by the embodiment forms a molten pool with good fluidity, high welding efficiency and good welding quality.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Furthermore, those skilled in the art will appreciate that while some of the embodiments described above include some features included in other embodiments, rather than others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, any of the claimed embodiments may be used in any combination. Additionally, the information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (9)
1. An arc welding electrode, comprising: the welding wire assembly comprises a plurality of strands of welding wires, and the plurality of strands of welding wires are stranded; still include the exposed core wire subassembly, the exposed core wire subassembly is connected with the cover of the powder, still include the exposed core wire subassembly, the exposed core wire subassembly is connected with the cover of the powder.
2. The arc welding electrode of claim 1, wherein the core wire assembly comprises a centerless core layer comprising a plurality of the core wires arranged sequentially in a same circumferential direction.
3. The arc welding electrode of claim 2, wherein the centerless core wire layer comprises three strands of the core wire.
4. The arc welding electrode according to claim 2, wherein the number of said centerless core layers is plural, and a plurality of said centerless core layers are arranged in order from inside to outside in a radial direction of said flux sheath.
5. The arc welding electrode of claim 1, wherein the core wire assembly comprises a central core wire and a peripheral core wire layer, the peripheral core wire layer comprising a plurality of the core wires arranged sequentially in a circumferential direction, the peripheral core wire layer being arranged circumferentially and stranded about the central core wire.
6. The arc welding electrode according to claim 5, wherein the number of the peripheral core layers is plural, the plural peripheral core layers are arranged in order from inside to outside in a radial direction of the flux sheath, and plural strands of the core wires located in the peripheral core layers adjacent to the center core wire are attached to the center core wire.
7. The arc welding electrode according to claim 1, wherein an end of said sheath distal from said clamping end is provided with a leading chamfer, said leading chamfer being 55 ° -65 °.
8. The arc welding electrode according to claim 1, wherein an end of said sheath proximate said clamping end is provided with a trailing chamfer, said trailing chamfer being 25 ° -35 °.
9. An arc welding apparatus comprising an arc welding electrode as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922246802.1U CN211728008U (en) | 2019-12-13 | 2019-12-13 | Arc welding rod and arc welding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922246802.1U CN211728008U (en) | 2019-12-13 | 2019-12-13 | Arc welding rod and arc welding device |
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| CN211728008U true CN211728008U (en) | 2020-10-23 |
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| CN201922246802.1U Active CN211728008U (en) | 2019-12-13 | 2019-12-13 | Arc welding rod and arc welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110919231A (en) * | 2019-12-13 | 2020-03-27 | 哈尔滨焊接研究院有限公司 | Arc welding rod and arc welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110919231A (en) * | 2019-12-13 | 2020-03-27 | 哈尔滨焊接研究院有限公司 | Arc welding rod and arc welding device |
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