CN212350753U - Welding electrode and welding equipment - Google Patents
Welding electrode and welding equipment Download PDFInfo
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- CN212350753U CN212350753U CN202021981010.5U CN202021981010U CN212350753U CN 212350753 U CN212350753 U CN 212350753U CN 202021981010 U CN202021981010 U CN 202021981010U CN 212350753 U CN212350753 U CN 212350753U
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Abstract
The utility model discloses a welding electrode and welding equipment, wherein, the welding electrode comprises an electrode moving part and an electrode conductor, the electrode conductor is driven by the electrode moving part to be close to or far away from a welding position, and the welding position is an intersection point of a first rib body and a second rib body; the electrode conductor is in a state of applying force to the junction and electrically welding after reaching the welding position. Its advantage lies in, the utility model discloses with the electrode conductor setting on electrode removal portion, make it can follow electrode removal portion and be close to or keep away from welding position, and steerable electrode conductor is to the application of force state of junction, accurately presses the welding to the junction to guarantee that the junction welding is firm.
Description
Technical Field
The utility model relates to the field of welding technique, especially, relate to a welding electrode and welding equipment.
Background
The existing reinforcement cage manufacturing equipment is large in size generally and can only be placed in a factory for use, when the reinforcement cage manufacturing equipment needs to be used, the welded reinforcement cage is transported to a designated place, the reinforcement cage is inconvenient to transport, and the transportation cost is high. At present, most of reinforcement cages manufactured on engineering sites are manually welded, the quality is uneven, and the influence on the quality of engineering is large. Therefore, manufacturers design reinforcement cage welding equipment, wherein the welding mode is gas shielded welding, the overall welding effect is unstable, the realization difficulty is high, the control is difficult, the welding quality is poor or welding leakage is caused, the welding efficiency is low, and rapid welding cannot be carried out.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a welding electrode, which has the function of applying force to the intersection point of the first rib body and the second rib body, so as to ensure the welding quality and improve the welding success rate.
A second object of the utility model is to provide a welding equipment, including above-mentioned welding electrode for realize the stable welding of the first muscle body and the second muscle body.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
a welding electrode comprises an electrode moving part and an electrode conductor, wherein the electrode conductor is driven by the electrode moving part to be close to or far away from a welding position, and the welding position is an intersection point of a first rib body and a second rib body; the electrode conductor is in a state of applying force to the junction and electrically welding after reaching the welding position.
Preferably, the electrode conductor is connected to the electrode moving part through a stress adjusting part to relieve an impact force between the electrode conductor and the junction.
Preferably, the stress adjustment part includes a fixing member, and the electrode conductor is connected to the fixing member; the stress adjusting part further comprises a circumferential force buffering assembly, and the circumferential force buffering assembly is positioned between the fixing part and the electrode moving part; and/or, the stress adjusting part further comprises a radial force buffering component, and the radial force buffering component is positioned between the fixing part and the electrode moving part.
Preferably, an insulating member is provided between the electrode conductor and the electrode moving portion.
Preferably, the electrode conductor comprises a welding conductive plate and an electrically conductive plate; the electric conduction plate is provided with a connecting part for being electrically connected with one pole of a power supply; the welding conductive plate is mechanically and electrically connected with the electric conductive plate and is used for being in direct contact with the junction.
Preferably, the welding conductor plate comprises at least one replaceable electrical conductor.
Preferably, a cooling structure is arranged on the electrode conductor and comprises a coolant inlet, a cooling channel and a coolant outlet, the cooling channel is located inside the electrode conductor, and the coolant inlet and the coolant outlet are communicated with the cooling channel.
Preferably, the electrode moving part comprises a support frame, a moving cylinder and a connecting plate, the moving cylinder is arranged at the top of the support frame, the electrode conductor is arranged below a top plate of the support frame through the connecting plate, and the moving cylinder is connected with the connecting plate and drives the connecting plate and the electrode conductor to move up and down along a guide groove in the support frame.
Preferably, an insulating member is provided between the connection plate and the electrode conductor.
The second purpose of the utility model is realized by adopting the following technical scheme:
a welding device comprises a first rib body assembling part and a welding device, wherein the first rib body assembling part comprises a fixed assembling component and a movable assembling component which are sequentially penetrated by a first rib body, the welding device is arranged on the fixed assembling component, and the welding position is an intersection point of the first rib body and a second rib body; the welding device comprises a first electrode and a second electrode, the first electrode is the welding electrode, and the first electrode, the second electrode and an intersection point of the first rib body and the second rib body form a conductive loop so as to weld and fix the second rib body and the first rib body.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses set up the electrode electric conductor on the electrode removes the portion, make it can follow the electrode removes the portion and be close to or keep away from the welding position, and the application of force state of steerable electrode electric conductor to the junction, accurately press the welding to the junction, thereby guarantee that the junction welds firmly, the on-state of the electrode electric conductor to the junction is controlled again, guaranteed that the electrode electric conductor directly to the junction ohmic welding, and the control degree of difficulty is low, do not influence the motion of first muscle body and second muscle body, it is little to the influence of the first muscle body and the second muscle body not in the welding position; meanwhile, the production efficiency is accelerated by fast welding, and the construction period is shortened.
Drawings
Fig. 1 is a schematic structural diagram of a welding electrode according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another angle of the welding electrode according to the embodiment of the present invention;
fig. 3 is a schematic structural view of a welding electrode disposed on a fixed assembly component according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a welding apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Referring to fig. 1 to 4, the welding electrode and the welding apparatus according to the embodiment of the present invention will be explained in the following description, wherein the electrode moving part is used to control the electrode conductor to be close to or away from the welding position, and the electrode conductor is used to apply force to the junction for power-on welding, thereby solving the problems of poor welding quality and easy welding leakage of the existing welding method.
As shown in fig. 1 and fig. 2, a welding electrode includes an electrode moving portion and an electrode conductor, the electrode conductor is driven by the electrode moving portion to be close to or far from a welding position, and the welding position is an intersection point of a first rib 1 and a second rib 2; the electrode conductor is in a state of applying force to the junction and electrically welding after reaching the welding position.
The utility model provides a welding electrode 10 mainly welds the intersection 4 to first muscle body 1 and the second muscle body 2, first muscle body 1 and second muscle body 2 are metal material, take the intersection 4 of first muscle body 1 and the second muscle body 2 as welding position 3, electrode conductor 12 in welding electrode 10 is close to or keeps away from welding position 3 under the effect of electrode removal portion 11, and when electrode conductor 12 is in welding position 3, it has the state to the 4 application of force circular telegrams of intersection, the intersection 4 of first muscle body 1 and the second muscle body 2 is through electrode conductor 12 electrical heating, and after the extrusion, the intensification is softened, and then the welding is in the same place. The electrode conductor 12 applies a force to the junction 4 in various ways, which will be described below by way of example.
Example one
When welding is started, the electrode conductor 12 is driven by the electrode moving part 11 to be close to the welding position 3 and then reach the welding position 3, at the moment, the electrode conductor 12 continues to move under the action of the electrode moving part 11, so that the intersection point 4 is extruded and applied with force, the electrode conductor 12 is in a power-on state, forms a loop with the intersection point 4 and the other electrode conductor 12, the intersection point 4 is heated and heated, and is extruded and applied with force, so that the first rib body 1 and the second rib body 2 are welded at the intersection point 4; then, the electrode conductor 12 leaves the welding position 3 under the action of the electrode moving part 11, does not contact with the first rib 1 and the second rib 2, the first rib 1 and the second rib 2 move relatively to form a next intersection point 4, the electrode conductor 12 approaches the welding position 3 again under the action of the electrode moving part 11, and the process is continued until the welding is completed. In this process, the electrode conductor 12 continues to reciprocate relative to the welding position 3, and is pressed against the junction 4 by the electrode moving portion 11. In this embodiment, the electrode conductor 12 may be kept in a conductive state all the time during the welding process, or may be energized only when it is in contact with the junction 4, and the energization state of the electrode conductor 12 is controlled by the control system.
Example two
When welding is started, the electrode conductor 12 is driven by the electrode moving part 11 to be close to the welding position 3, then reaches the welding position 3, and stays at the welding position 3 under the action of the electrode moving part 11, when the first rib body 1 and the second rib body 2 are intersected at the welding position 3 to form an intersection point 4, the electrode conductor 12 stays at the welding position 3 and is in contact with the intersection point 4, the electrode conductor 12 can keep the position but extrude and apply force to the intersection point 4 through the electrode moving part 11, the electrode conductor 12 is in an electrified state, and forms a loop with the intersection point 4 and the other electrode conductor 12, the intersection point 4 is heated and heated, and extrudes and applies force, so that the first rib body 1 and the second rib body 2 are welded at the intersection point 4; then, the force applied to the electrode conductor 12 by the electrode moving part 11 is removed, the electrode conductor 12 stays at the welding position 3, but only keeps contact with the first rib 1 or the second rib 2, the first rib 1 and the second rib 2 are not forced, the first rib 1 or the second rib 2 is prevented from being deformed under the stress, and at the moment, the electrode conductor 12 is controlled by the control system to be in a non-electrified state, so that the influence on the first rib 1 and the second rib 2 is smaller; the first rib body 1 and the second rib body move relatively to form a next junction 4, the electrode conductor 12 is electrified again, and force is applied to the junction 4 under the action of the electrode moving part 11, and the process is continued until welding is completed. In the process, the electrode conductor 12 is stationary relative to the welding position 3 and is forced against the junction 4 by means of the electrode displacement 11 or other additional means. After welding, the electrode conductor 12 leaves the welding position 3 under the action of the electrode moving part 11, so that the welded reinforcement cage can be conveniently detached from the welding equipment. In this embodiment, the electrode moving portion 11 includes a spring or an air cylinder, and the spring or the air cylinder can apply an extrusion force to the junction 4, so that the electrode conductor 12 applies an extrusion force to the junction 4, and the first rib 1 and the second rib 2 are welded firmly.
Based on the above embodiment, it is preferable that the electrode conductor 12 is connected to the electrode moving portion 11 through the stress adjusting portion 13 to alleviate the impact force of the electrode conductor 12 with the junction 4. The first rib body 1 and the second rib body 2 are mutually overlapped to form an intersection point 4, and the first rib body 1 and the second rib body 2 have a certain thickness, so that a higher bulge can be formed at the intersection point 4, if the second rib body 2 spans on the first rib body 1, and the electrode conductor 12 is impacted by the bulge of the intersection point 4 when the intersection point 4 is in contact extrusion, after long-time use, the electrode conductor 12 and a connecting part 123 between the electrode conductor and the electrode moving part 11 can be damaged by impact, and the electrode conductor 12 can be damaged.
To mount the electrode conductor 12, the stress adjusting portion 13 includes a fixing member 131, and the electrode conductor 12 is connected to the fixing member 131. In some embodiments, the first rib body 1 and the second rib body 2 are a main rib and a stirrup in a reinforcement cage, respectively, and during a welding process of the reinforcement cage, the main rib drives the stirrup to rotate, so that the main rib and the stirrup have circumferential impact force and radial impact force on the electrode conductor 12, and therefore, the stress adjustment portion 13 further includes a circumferential force buffer assembly, and the circumferential force buffer assembly is located between the fixing member 131 and the electrode moving portion 11; the stress adjustment section 13 further includes a radial force buffering assembly, which is located between the fixing member 131 and the electrode moving section 11. In other embodiments, the impact force of the first rib 1 and the second rib 2 on the electrode conductor 12 is only circumferential impact force, and the stress adjustment portion 13 further includes a circumferential force buffer assembly, which is located between the fixing member 131 and the electrode moving portion 11; in other embodiments, the impact force of the first rib 1 and the second rib 2 on the electrode conductor 12 is only a radial impact force, and the stress adjustment portion 13 further includes a radial force buffering assembly, and the radial force buffering assembly is located between the fixing member 131 and the electrode moving portion 11. Radial force buffering subassembly can include radial buffer spring or radial buffer cylinder, compresses when electrode conductor 12 receives radial force, not only can cushion protection electrode conductor 12, still can make electrode conductor 12 and junction 4 contact inseparabler, exerts bigger extrusion force to junction 4, makes the welding of first muscle body 1 and second muscle body 2 more firm. The radial buffer spring or the radial buffer cylinder is arranged in the radial extending direction of the meeting point 4 of the electrode conductor 12.
More specifically, as shown in fig. 1 and fig. 2, the circumferential force buffering assembly includes a receiving groove 132, a sliding rod 133 and an elastic member 134, the fixing member 131 is located in the receiving groove 132 and is sleeved on the sliding rod 133, the elastic member 134 is sleeved on the sliding rod 133, one end of the elastic member abuts against an inner wall of the receiving groove 132, and the other end of the elastic member abuts against the fixing member 131. Due to the retractility of the elastic element 134, the fixed element 131 can properly move on the sliding rod 133, when the stirrup is uneven, circumferential displacement occurs when the electrode conductor 12 contacts the junction 4, and the fixed element 131 can properly move along the stress direction, and due to the existence of the elastic element 134, the displacement of the electrode conductor 12 is limited, so that the electrode conductor 12 does not deviate from the welding position 3, and hard collision between the electrode conductor 12 and the junction 4 can be avoided, thereby effectively protecting the electrode conductor 12. The fixing member 131, the sliding rod 133 and the elastic member 134 are disposed in the receiving groove 132, so as to protect these components, and also facilitate reducing the volume of the circumferential force buffering assembly, and thus the volume of the whole welding electrode 10.
The electrode conductor 12 is connected to a transformer (not shown) which is controlled by a control system to switch the electrode conductor 12 on and off. Since some of the electrode moving portions 11 include a metal conductive material, an insulating member needs to be provided between the electrode conductor 12 and the electrode moving portion 11.
More specifically, as shown in fig. 1, fig. 2 and fig. 3, the electrode moving part 11 includes a support frame 111, a moving cylinder 112 and a connecting plate 113, the moving cylinder 112 is disposed on the top of the support frame 111, the electrode conductor 12 is disposed below a top plate 116 of the support frame 111 through the connecting plate 113, the moving cylinder 112 is connected to the connecting plate 113 and drives the connecting plate 113 and the electrode conductor 12 to move up and down along a guide groove of the support frame 111. As shown in fig. 3, the supporting frame 111 includes a side plate 114 and a mounting plate, the mounting plate includes a positioning plate 115 connected to the side plate 114, a top plate 116 and a guide plate 117 for mounting the moving cylinder 112, the positioning plate 115, the top plate 116 and the guide plate 117 are perpendicular to each other, a through hole 118 is formed in the top plate 116, a movable rod of the moving cylinder 112 passes through the through hole 118 and is connected to a connecting plate 113 below the movable rod, a guide slide rail 119 is mounted on the guide plate 117, the connecting plate 113 is slidably engaged with the guide slide rail 119, and moves along the guide slide rail 119 under the action of the movable rod of the moving cylinder 112, and the electrode conductor 12 is disposed at the bottom of the connecting plate 113 through a circumferential force buffering assembly and. The moving cylinder 112 may be a hydraulic cylinder or an air cylinder, and may be a force applying device for the electrode conductor 12 to the junction 4, or may be a radial buffer structure, and may control the electrode conductor 12 to move slightly. The side plate 114 is used to fix the entire support frame 111, for example, when the welding electrode 10 is disposed on a fixed mounting component of a welding apparatus, the side plate 114 is fixedly connected to the fixed mounting component.
Preferably, in order to prolong the service life of the electrode moving part 11, the supporting frame 111, the moving cylinder 112 and the connecting plate 113 are made of a metal material, such as a steel material, and therefore, attention should be paid to the insulation between the electrode moving part 11 and the electrode conductor 12, and as shown in fig. 3, an insulating member (not shown) is provided between the connecting plate 113 and the electrode conductor 12. The insulating part can be an insulating plastic ring, an insulating plastic pad, insulating glue or the like, and can also be other conventional insulating materials.
As shown in fig. 1 and 2, the electrode conductor 12 includes a welding conductor plate 121 and an electrically conductive plate 122; the electrically conductive plate 122 is provided with a connecting portion 123 for electrically connecting to one pole of a power supply; the welding conductor plate 121 is mechanically and electrically connected to the electrically conductive plate 122 for direct contact with the junction 4. The main purpose of separating the electrode conductor 12 into the welding conductor plate 121 and the electrical conductor plate 122 is to: the electrode conductor 12 is convenient to be connected and electrified with a power supply such as a transformer, meanwhile, the direct impact with the junction 4 is avoided from influencing the connection structure of the electrode conductor 12 and the transformer, and the connection stability of the electrode conductor 12 and the power supply is ensured.
Because the welding conductive plate 121 applies force to the junction 4 when in use and rubs against the junction 4, if the welding mode in the first embodiment is adopted, the impact force of the welding conductive plate 121 is larger, so that the welding conductive plate 121 is deformed and worn, and finally the welding conductive plate 121 deviates from the welding position 3, and the problem of insufficient welding force or dislocation occurs. The structure does not need to replace the whole electrode conductor 12, which is beneficial to reducing the use cost. The conductors are fixed to each other by screws, and the welding conductive plate 121 and the electrical conductive plate 122 may be fixedly connected by screws.
As shown in fig. 1 and fig. 2, one end of the electrically conductive plate 122 is provided with an extending portion (not shown) extending toward the power supply direction for installing an electrically conductive copper plate (not shown) for electrically connecting the electrode conductor 12 and one pole of the power supply.
Preferably, in order to enhance the electrical conductivity of the electrode conductor 12 and also to better conduct the current, a current loop is formed at the junction 4, and the electrically conductive plate 122 and the welding conductive plate 121 are both made of conductive copper material.
Based on the above embodiment, the cooling structure may be disposed in the electrically conductive plate 122 or in any one of the electrical conductors in the welded electrically conductive plate 121, and the electrically conductive plate 122 and the welded electrically conductive plate 121 are both made of metal material, so that the heat conduction effect is good, and therefore, the coolant of the cooling structure may act on other electrical conductors without the cooling structure.
As shown in fig. 4, the utility model also discloses a welding device, which comprises a first rib body assembling part 20 and a welding device, wherein the first rib body assembling part 20 comprises a fixed assembling component 21 and a movable assembling component 22 for the first rib body 1 to pass through in sequence, the welding device is arranged on the fixed assembling component 21, and the welding position 3 is an intersection point 4 of the first rib body 1 and the second rib body 2; the welding device comprises a first electrode and a second electrode 30, the first electrode is the welding electrode 10 in the above embodiment, and the first electrode, the second electrode 30 and the junction 4 of the first rib body 1 and the second rib body 2 form a conductive loop so as to weld and fix the second rib body 2 and the first rib body 1.
The welding electrode 10 of the present invention can be disposed on the upper portion, left and right sides, or bottom of the fixed assembly component 21, and the positional relationship between the electrode conductor 12 and the electrode moving portion 11 in the welding electrode 10 can be changed along with the assembly position, for example, if the welding electrode 10 is disposed on the upper portion of the fixed assembly component 21, the electrode moving portion 11 is located above the electrode conductor 12 to drive the electrode conductor 12 to move up and down; if the welding electrode 10 is arranged on both sides of the fixed assembly component 21, the electrode moving part 11 is positioned on the outer side of the electrode conductor 12 to drive the electrode conductor 12 to move left and right; if the welding electrode 10 is disposed at the bottom of the fixed assembly 21, the electrode moving part 11 is located below the electrode conductor 12, and drives the electrode conductor 12 to move left and right. The utility model discloses a convenient description to position relation is expressed to the position in the drawing, can not understand the restriction the utility model discloses a specific protection scope does not influence its position relation in the in-service use. In the particular example shown in fig. 3 and 4, the welding electrode 10 is located at the upper portion of the fixed mounting assembly 21.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A welding electrode, characterized by: the welding device comprises an electrode moving part and an electrode conductor, wherein the electrode conductor is driven by the electrode moving part to be close to or far away from a welding position, and the welding position is an intersection point of a first rib body and a second rib body; the electrode conductor is in a state of applying force to the junction and electrically welding after reaching the welding position.
2. The welding electrode of claim 1, wherein: the electrode conductor is connected to the electrode moving part through a stress adjusting part to relieve the impact force of the electrode conductor and the intersection point.
3. A welding electrode as defined in claim 2, wherein: the stress adjusting part comprises a fixing piece, and the electrode conductor is connected with the fixing piece; the stress adjusting part further comprises a circumferential force buffering assembly, and the circumferential force buffering assembly is positioned between the fixing part and the electrode moving part; and/or, the stress adjusting part further comprises a radial force buffering component, and the radial force buffering component is positioned between the fixing part and the electrode moving part.
4. The welding electrode of claim 1, wherein: an insulating member is provided between the electrode conductor and the electrode moving portion.
5. A welding electrode as claimed in any one of claims 1 to 4, wherein: the electrode conductor comprises a welding conductive plate and an electric conductive plate; the electric conduction plate is provided with a connecting part for being electrically connected with one pole of a power supply; the welding conductive plate is mechanically and electrically connected with the electric conductive plate and is used for being in direct contact with the junction.
6. The welding electrode of claim 5, wherein: the welding conductor plate includes at least one replaceable electrical conductor.
7. A welding electrode as claimed in any one of claims 1 to 4, wherein: the electrode conductor is provided with a cooling structure, the cooling structure comprises a coolant inlet, a cooling channel and a coolant outlet, the cooling channel is located inside the electrode conductor, and the coolant inlet and the coolant outlet are communicated with the cooling channel.
8. A welding electrode as claimed in any one of claims 1 to 4, wherein: the electrode moving part comprises a support frame, a moving cylinder and a connecting plate, the moving cylinder is arranged at the top of the support frame, the electrode conductor is arranged below a top plate of the support frame through the connecting plate, and the moving cylinder is connected with the connecting plate and drives the connecting plate and the electrode conductor to move up and down along a guide groove in the support frame.
9. The welding electrode of claim 8, wherein: an insulating part is arranged between the connecting plate and the electrode conductor.
10. A welding device is characterized by comprising a first rib body assembling part and a welding device, wherein the first rib body assembling part comprises a fixed assembling component and a movable assembling component which are used for a first rib body to sequentially penetrate through, the welding device is arranged on the fixed assembling component, and the welding position is an intersection point of the first rib body and a second rib body; the welding device comprises a first electrode and a second electrode, wherein the first electrode is the welding electrode as claimed in any one of claims 1 to 9, and the first electrode, the second electrode and the intersection point of the first rib and the second rib form a conductive loop so as to weld and fix the second rib and the first rib.
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| CN202021981010.5U CN212350753U (en) | 2020-09-11 | 2020-09-11 | Welding electrode and welding equipment |
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| CN202021981010.5U CN212350753U (en) | 2020-09-11 | 2020-09-11 | Welding electrode and welding equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975187A (en) * | 2020-09-11 | 2020-11-24 | 浙江坤德创新岩土工程有限公司 | Welding electrode and welding equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975187A (en) * | 2020-09-11 | 2020-11-24 | 浙江坤德创新岩土工程有限公司 | Welding electrode and welding equipment |
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