Slag leakage prevention assembly for electroslag welding

Abstract

The utility model aims at providing an electroslag welding slag leakage prevention assembly which is characterized by comprising a partition plate, a first baffle and a second baffle, the first baffle and the second baffle are fixedly connected to the two sides of the partition plate respectively and extend out of the edge of the same side of the partition plate, and the side end face, located between the first baffle and the second baffle, of the partition plate is a welding face. The welding surface and two opposite side surfaces of the first baffle plate and the second baffle plate form a melting groove; the first baffle and the second baffle each comprise a joint face parallel to the welding face and in the same direction, and a plurality of containing through grooves which are different in depth and penetrate in the length directions of the containing through grooves are formed in the two joint faces. The slag leakage prevention assembly further comprises filler which is made of flexible fireproof materials and can be placed in the containing groove, and the top of the filler is higher than the joint face after the filler is placed. By means of the mode that the containing through grooves with the different depths are formed in the joint face of the baffle and matched with the filler, the assembling gaps with the variable sizes are filled, and therefore slag leakage is avoided, and meanwhile the welding effect can be improved.

Description

Technical Field

[0001] This utility model relates to the field of electroslag welding technology, and more specifically, to an electroslag welding anti-slag leakage component. Background Technology

[0002] Electroslag welding, as a highly efficient welding method, operates on a unique principle: it melts and joins metals through resistance heat generated by electric current. During this process, to ensure welding quality and safety, a baffle is placed at the weld joint to form a stable molten pool and protect the welding area. Slag leakage refers to the phenomenon where molten metal overflows from the edge of the baffle or through gaps, exposing it to air and oxidizing to form oxide inclusions. These inclusions reduce the mechanical properties of the weld joint.

[0003] Therefore, the baffle plays a crucial role in the electroslag welding process. For example... Figure 1 As shown, existing baffles are usually pre-welded to both sides of the partition, with the baffles extending a certain distance from the edge of the partition. Then, the wing plate is assembled with the partition. After the end faces of the wing plate and the baffle are pressed together, a square groove is formed. The resistance heat generated by the current passing through the molten slag is used as a heat source to melt the filler metal and the base material in the square groove to form a molten pool. After solidification, the partition and the wing plate can be firmly connected.

[0004] However, the two baffles often cannot be kept in close contact with the wing plate at the same time. Either the baffles on the inner baffle are uneven, and the wing plate cannot be in close contact with one of the lower baffles, or the wing plate is pushed up by other baffles, so that the baffles on both sides of the baffle to be welded cannot be in close contact with the wing plate, resulting in gaps. When the gap between the plates exceeds 1.5mm, it will affect the formation of the molten pool, cause slag leakage, and lead to quality problems in electroslag welding. Summary of the Invention

[0005] The purpose of this utility model is to provide an anti-slag leakage component for electroslag welding. By setting multiple receiving grooves of different depths on the joint surface of the baffle and cooperating with a filler made of flexible fireproof material, the assembly gaps of varying sizes are filled, thereby preventing slag leakage problems that may occur during electroslag welding. At the same time, the unused receiving grooves can increase the contact area between the baffle and the molten metal, thereby improving the welding effect.

[0006] This utility model is achieved through the following technical solution:

[0007] This specification provides an electroslag welding anti-slag leakage component, including a partition, a first baffle and a second baffle respectively fixedly connected to both sides of the partition, the first baffle and the second baffle both extending out of the same side edge of the partition, the side end face of the partition located between the first baffle and the second baffle is a welding surface, and the welding surface forms a molten groove with the two sides opposite to the first baffle and the second baffle.

[0008] Both the first baffle and the second baffle include a joint surface that is parallel to and in the same direction as the welding surface, and both joint surfaces are provided with a plurality of receiving grooves of different depths that penetrate along their respective length directions.

[0009] The anti-slag component also includes a filler made of flexible fire-resistant material that can be placed in the receiving channel and whose top is higher than the mating surface after placement.

[0010] As a preferred embodiment of this invention, the filler is asbestos rope.

[0011] By adopting the above technical solution, the market price of asbestos rope is cheap (6 yuan / jin), which can not only meet the filling and sealing requirements, but also save the transformation cost and facilitate its promotion.

[0012] As a preferred embodiment of this invention, the deeper the receiving channel is, the closer it is to the melting pool.

[0013] By adopting the above technical solution, the various receiving channels are arranged in a regular manner according to depth, which facilitates the quick and easy adjustment of the asbestos rope to the appropriate receiving channel. Furthermore, since the deeper receiving channels are closer to the molten pool, once the receiving channels for the asbestos rope are determined, other unused receiving channels on the side of the asbestos rope closest to the molten pool can be used to the maximum extent to accommodate the molten metal. Compared with receiving channels with smaller depths, the contact area with the molten metal is larger.

[0014] As a preferred embodiment of the present invention, the walls of each of the receiving channels are inclined outwards, and the receiving channels on the first baffle and the receiving channels on the second baffle are continuously arranged, with an inter-channel protrusion formed between any two adjacent receiving channels.

[0015] By adopting the above technical solution, the space at the bottom of the receiving channel is reduced, and the asbestos rope deforms more towards the shape of the receiving channel when compressed, achieving a better filling effect. Moreover, compared to a square channel surrounded on three sides, it is easier to place, remove, and adjust the asbestos rope.

[0016] As a preferred embodiment of this invention, the height of the inter-groove protrusion is lower the closer it is to the molten groove.

[0017] By adopting the above technical solution, it is convenient to move and adjust the asbestos rope in different receiving channels, and it is also easier for molten metal to enter the receiving channels, which helps to increase the overall structural strength.

[0018] As a preferred embodiment of this utility model, both the first baffle and the second baffle are provided with a tensioning structure to keep the corresponding asbestos rope in a taut state.

[0019] By employing the above technical solution, the asbestos rope, under its own stress, may shrink and twist, potentially leading to displacement and uneven filling. The tensioning structure keeps the asbestos rope taut to prevent displacement.

[0020] As a preferred embodiment of the present invention, the tensioning structure includes a plurality of uniformly distributed protrusions disposed within each of the receiving slots.

[0021] By employing the above technical solution, the asbestos rope is sequentially hooked to the protrusions in the receiving groove under tension, thereby preventing the asbestos rope from shrinking and bending due to its own stress, which would lead to uneven filling. Other features increase the contact area with the molten metal, increasing structural strength. On the other hand, the protrusions in other unused receiving grooves on the side of the asbestos rope closer to the molten pool further increase the contact area with the molten metal, forming an interpenetrating structure.

[0022] As a preferred embodiment of this invention, each of the protrusions disposed at the end of the receiving groove is inclined to the side away from the center of its corresponding receiving groove.

[0023] By adopting the above technical solution, the tilt direction of the protrusions is opposite to the contraction direction of the asbestos rope, which can better counteract the stress of the asbestos rope itself, thereby preventing slippage and keeping the asbestos rope taut. Furthermore, the asbestos rope is easy to disassemble for adjustment.

[0024] As a preferred embodiment of the present invention, the asbestos rope includes an inner core and an outer layer that wraps around the inner core, and the density of the inner core is lower than the density of the outer layer.

[0025] By adopting the above technical solution, the low-density inner core provides elastic support, and the high-density outer layer adapts to the compression requirements of different gaps, thus better coping with assembly gaps of different sizes.

[0026] In summary, this utility model has the following beneficial effects:

[0027] The flexible fire-resistant material filler is higher than the joint surface of the baffle. When the wing plate and the baffle are assembled, there are gaps. The flexible fire-resistant material filler can be filled into appropriate receiving channels according to the size of the gaps, thus preventing the filler from failing to prevent slag leakage when the gaps are too large. Other receiving channels also increase the contact area between the baffle and the molten metal to a certain extent and form an interpenetrating structure, which helps to increase the overall structural strength.

[0028] If there are no gaps after the wing plate and the baffle are assembled, the filler made of flexible fireproof material will be pressed into the receiving groove, which will not prevent the wing plate and the baffle from joining together and increasing the additional height.

[0029] Setting up multiple receiving channels of varying depths allows the use of fillers of uniform size. However, if there is only one type of receiving channel, it is necessary to purchase fillers of various sizes and select the appropriate one from among them, which is very troublesome and increases procurement costs and difficulty. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an electroslag welding structure in the prior art;

[0031] Figure 2 This is a schematic diagram of the structure of an electroslag welding anti-slag leakage component in Example 1;

[0032] Figure 3 This is a schematic diagram of the structure of an electroslag welding anti-slag leakage component in Example 2;

[0033] Figure 4 This is a top view of the first baffle in Embodiment 2, showing the specific arrangement of the spikes.

[0034] In the figure: 1. Partition; 11. Welding surface; 2. Baffle; 3. Wing plate; 4. Molten pool; 41. Molten groove; 5. First baffle; 6. Second baffle; 7. Joint surface; 8. Receiving groove; 81. Groove protrusion; 82. Spike; 9. Filler. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0037] Example 1:

[0038] like Figure 2 As shown, an electroslag welding anti-slag leakage assembly includes a partition 1, a first baffle 5 and a second baffle 6 respectively fixedly connected to both sides of the partition 1. The first baffle 5 and the second baffle 6 both extend out of the same side edge of the partition 1. The side end face of the partition 1 located between the first baffle 5 and the second baffle 6 is a welding surface 11. The welding surface 11 and the two sides opposite to the first baffle 5 and the second baffle 6 form a molten groove 41.

[0039] Both the first baffle 5 and the second baffle 6 include a joint surface 7 that is parallel to and in the same direction as the welding surface 11. Both joint surfaces 7 are provided with multiple receiving grooves 8 of different depths that penetrate along their respective length directions.

[0040] The anti-slag component also includes a filler 9 made of flexible fire-resistant material that can be placed in the receiving channel 8 and whose top is higher than the mating surface 7 after placement.

[0041] Explained, the flexible fire-resistant filler 9 is higher than the joint surface 7 of the baffle 2. When the wing plate 3 and the baffle 2 are assembled, there is a gap. The flexible fire-resistant filler 9 can be filled into the appropriate receiving groove 8 according to the size of the gap, thus avoiding the filler 9 failing to prevent slag leakage when the gap is too large. Other receiving grooves 8 also increase the contact area between the baffle 2 and the molten metal to a certain extent and form an interpenetrating structure, which helps to increase the overall structural strength. If there is no gap after the wing plate 3 and the baffle 2 are assembled, the flexible fire-resistant filler 9 is pressed into the receiving groove 8, which will not hinder the joint of the wing plate 3 and the baffle 2 and increase the additional height. On the other hand, multiple receiving grooves 8 with different depths can also use fillers 9 of the same size. If there is only one depth of receiving groove 8, it is necessary to purchase fillers 9 of various sizes and select the appropriate one from among them, which is very troublesome and increases the procurement cost and difficulty.

[0042] For example, four receiving slots 8 are each provided on the mating surface 7 of the first baffle 5 and the second baffle 6. Figure 2 Taking the four receiving slots 8 on the first baffle 5 as an example, the same size filler 9 is placed in each slot. It can be seen that the height of the filler 9 protruding from the joint surface 7 in different receiving slots 8 is different. Therefore, the receiving slot 8 for placing the filler 9 is selected according to the size of the gap after the wing plate 3 and the baffle 2 are assembled.

[0043] For illustrative purposes, the number, shape, and depth of the accommodating channels 8 can be adjusted according to actual usage. The filler 9, made of flexible fire-resistant material, can be a rope or strip made of materials such as asbestos, ceramic fiber, graphite-impregnated fiber, or metal-coated ceramic fiber. The fire-resistant condition is to prevent high-temperature molten metal from damaging the structure of the filler 9 and affecting the sealing effect, while the flexible condition is to avoid hindering the connection between the wing plate 3 and the baffle 2 and adding additional height.

[0044] In some embodiments of this application, the filler 9 is asbestos rope.

[0045] Explanatoryly, asbestos rope is inexpensive (6 yuan / catties), can meet the filling and sealing requirements, saves on renovation costs, and is easy to promote.

[0046] In some embodiments of this application, the depth of the receiving channel 8 is greater the closer it is to the molten groove 41.

[0047] Explanatoryly, the arrangement of the receiving channels 8 according to the regularity of depth facilitates the quick adjustment of the asbestos rope to the appropriate receiving channel 8. Furthermore, since the deeper receiving channels 8 are closer to the molten pool 41, once the receiving channels 8 for the asbestos rope are determined, other unused receiving channels 8 on the side of the asbestos rope closest to the molten pool 41 can be used to the maximum extent to accommodate the molten metal, resulting in a larger contact area with the molten metal compared to receiving channels 8 with smaller depths.

[0048] For example, Figure 2 The four receiving slots 8 opened on the joint surface 7 of the first baffle 5 and the second baffle 6 are arranged according to the above rules.

[0049] For illustrative purposes, it is assumed that the asbestos rope is placed in the innermost receiving groove 8 during use. If there is no gap after the wing plate 3 and the baffle 2 are assembled, the asbestos rope will be squeezed into the receiving groove 8 due to its flexibility, without hindering the connection between the wing plate 3 and the baffle 2 and increasing the additional height. If the gap after the wing plate 3 and the baffle 2 are assembled is large, the asbestos rope can be moved to the outer receiving groove 8 in sequence to gradually increase the protrusion height of the asbestos rope to match the size of the gap, so as to avoid the gap not being completely sealed, resulting in poor leak prevention effect.

[0050] Example 2:

[0051] like Figure 3 As shown, an electroslag welding anti-slag leakage component is provided. The difference between this embodiment and embodiment 1 is that the walls of each receiving channel 8 are inclined outward, and each receiving channel 8 on the first baffle 5 and each receiving channel 8 on the second baffle 6 are continuously arranged, with a channel protrusion 81 formed between any two adjacent receiving channels 8.

[0052] Illustratively, the receiving slot 8 can be Figure 3 The inverted triangle shape, or even an inverted trapezoid, reduces the space at the bottom of the receiving groove 8. When the asbestos rope is compressed, it deforms more outwards towards the receiving groove 8, achieving a better filling effect. Moreover, compared to a square groove surrounded on three sides, it is easier to place, remove, and adjust the asbestos rope. The continuously arranged receiving grooves 8 with inclined walls facilitate the placement and removal of the asbestos rope, while the protrusions 81 between the grooves act as separators, ensuring that the asbestos rope does not shift on its own between the receiving grooves 8.

[0053] In some embodiments of this application, the height of the inter-groove protrusion 81 is lower the closer it is to the molten groove 41.

[0054] Explanatory Figure 3The inter-slot protrusions 81 on the mating surfaces 7 of the first baffle 5 and the second baffle 6, which accommodate the through slots 8, are arranged according to the above-described rules. The height of the inter-slot protrusions 81 is lower than that of the mating surfaces 7, and the height decreases as it approaches the molten pool 41. This facilitates the movement and adjustment of the asbestos rope between the through slots 8, and also makes it easier for molten metal to enter the through slots 8, thereby enhancing the welding strength.

[0055] In some embodiments of this application, the first baffle 5 and the second baffle 6 are both provided with tensioning structures to keep their respective asbestos ropes taut.

[0056] Explanatoryly, the asbestos rope, under its own stress, may shrink and twist, potentially causing displacement and uneven filling. Tensioning structures keep the asbestos rope taut to prevent displacement.

[0057] For example, the tensioning structure can be a spiral tensioning structure consisting of a screw, nut, fixed seat, and asbestos rope clamping device. By rotating the screw, the nut moves along the screw, thereby moving the asbestos rope clamping device closer to or away from the fixed seat, thus achieving tensioning of the asbestos rope; or a counterweight tensioning structure consisting of a counterweight, pulley block, and asbestos rope. The counterweight is connected to the asbestos rope through the pulley block, and the gravity of the counterweight is used to keep the asbestos rope at a certain tension; or other existing mechanical structures that can keep the asbestos rope in a tensioned state in the receiving groove 8.

[0058] In some embodiments of this application, such as Figure 4 As shown, the tensioning structure includes a plurality of evenly distributed protrusions 82 disposed in each receiving slot 8.

[0059] Explained, the asbestos rope is sequentially hooked to the protrusions 82 in the receiving groove 8 under tension, thereby preventing the asbestos rope from shrinking and bending due to its own stress, which would lead to uneven filling. On the other hand, the protrusions 82 in other unused receiving grooves 8 on the side of the asbestos rope near the molten groove 41 further increase the contact area with the molten metal, forming an interpenetrating structure, thereby further increasing the structural strength after welding.

[0060] In some embodiments of this application, such as Figure 4 As shown, each of the protrusions 82 located at the end of the receiving groove 8 is inclined to the side away from the center of its corresponding receiving groove 8.

[0061] For example, each receiving groove 8 includes at least two protrusions located at both ends of the receiving groove 8 and inclined in the opposite direction away from each other, so as to achieve a tensioning effect. The number of other protrusions 82 between the two end protrusions 82 is not limited.

[0062] Explanatoryly, first hook one end of the asbestos rope onto the protrusion 82 at one end of the receiving groove 8. Then, pull the asbestos rope taut and bring it close to the protrusion 82 at the other end. After loosening the asbestos rope, its own stress causes it to contract and hook back onto the protrusion 82 at the other end. The inclination direction of both protrusions 82 is opposite to the contraction direction of the asbestos rope, thus better counteracting the asbestos rope's own stress and preventing slippage, keeping the asbestos rope taut. This structure is simple and easy to implement, and the asbestos rope is easy to disassemble and adjust without the need for other complex mechanical structures, making it very convenient in confined working conditions such as electroslag welding.

[0063] In some embodiments of this application, the asbestos rope includes an inner core and an outer layer that wraps around the inner core, and the density of the inner core is lower than that of the outer layer.

[0064] Explanatory: the low-density inner core provides elastic support, while the high-density outer layer accommodates the compression requirements of different gaps.

[0065] Implementation principle: Two asbestos ropes are hooked to the protrusions 82 in either of the receiving slots 8 on the first baffle 5 and the second baffle 6 to achieve tension. The partition 1 and the wing plate 3 are assembled, and the gaps between the first baffle 5 and the second baffle 6 and the wing plate 3 are observed to adjust the position of the asbestos ropes. When the position of the asbestos rope needs to be adjusted, simply pull both ends of the asbestos rope taut and remove it from the corresponding protrusions 82, roll it along the wall of the receiving slot 8 to a suitable receiving tank, and then tighten and fix it again. Molten metal is added to the melting tank 41. The molten metal flows into other unused receiving slots 8 on the side of the asbestos rope closest to the melting tank 41 until it stops flowing at the position of the asbestos rope.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slag-preventing component for electroslag welding, characterized in that: Includes a partition (1), a first baffle (5) and a second baffle (6) respectively fixedly connected to both sides of the partition (1). The first baffle (5) and the second baffle (6) both extend out of the same side edge of the partition (1). The side end face of the partition (1) located between the first baffle (5) and the second baffle (6) is a welding surface (11). The welding surface (11) forms a molten groove (41) on the two sides opposite to the first baffle (5) and the second baffle (6). Both the first baffle (5) and the second baffle (6) include a joint surface (7) that is parallel to and in the same direction as the welding surface (11), and both joint surfaces (7) are provided with multiple receiving slots (8) of different depths that penetrate along their respective length directions. The anti-slag component also includes a filler (9) made of flexible fireproof material that can be placed in the receiving channel (8) and whose top is higher than the joint surface (7) after placement.

2. The electroslag welding anti-slag leakage assembly according to claim 1, characterized in that: The filler (9) is asbestos rope.

3. The electroslag welding anti-slag leakage assembly according to claim 2, characterized in that: The closer the receiving channel (8) is to the melt groove (41), the deeper it is.

4. The electroslag welding anti-slag leakage assembly according to claim 3, characterized in that: The walls of each of the receiving channels (8) are inclined outward, and each of the receiving channels (8) on the first baffle (5) and each of the receiving channels (8) on the second baffle (6) are continuously arranged, and a channel protrusion (81) is formed between any two adjacent receiving channels (8).

5. The electroslag welding anti-slag leakage assembly according to claim 4, characterized in that: The closer the inter-groove protrusion (81) is to the molten groove (41), the lower its height.

6. The anti-slag leakage assembly for electroslag welding according to claim 2, characterized in that: Both the first baffle (5) and the second baffle (6) are provided with tensioning structures to keep the corresponding asbestos ropes taut.

7. The electroslag welding anti-slag leakage assembly according to claim 6, characterized in that: The tensioning structure includes a plurality of evenly distributed protrusions (82) disposed in each of the receiving slots (8).

8. The electroslag welding anti-slag leakage assembly according to claim 7, characterized in that: Each of the protrusions (82) located at the end of the receiving groove (8) is inclined to the side away from the center of its respective receiving groove (8).

9. The anti-slag leakage assembly for electroslag welding according to claim 2, characterized in that: The asbestos rope includes an inner core and an outer layer that wraps around the inner core, wherein the density of the inner core is lower than the density of the outer layer.

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