High-strength nickel-based alloy welding rod and production process thereof

Abstract

The invention relates to a high-strength nickel-based alloy welding rod and a production process thereof. The high-strength nickel-based alloy welding rod comprises a central welding wire, and a plurality of peripheral welding wires are twisted on the periphery of the central welding wire; the periphery of the center stranded welding wire is sleeved with a first fastening net, the first fastening net is provided with a plurality of indents, the indents are in a spiral shape matched with the peripheral welding wires, the indents and the peripheral welding wires are arranged in a staggered mode, a first combustion improver is arranged in a hole formed between the first fastening net and the center welding wire, and a second combustion improver is arranged in a hole formed between the first fastening net and the center welding wire. The inner concave is pressed, the first combustion improver is pushed to move towards the inner center of the central stranded welding wire and is compacted, so that the first combustion improver is prevented from generating holes, namely, the distribution uniformity of the combustion improver is improved, the product quality is improved, in addition, the outer-layer welding wire is arranged at the inner concave, the outer-layer welding wire is matched with the inner concave, and the welding quality is improved. Relative movement in the length direction between the outer-layer welding wire and the center stranded welding wire is prevented, and the stability of products is improved.

Description

Technical Field

[0001] This invention relates to a high-strength nickel-based alloy welding electrode and its manufacturing process, belonging to the field of welding wire. Background Technology

[0002] Welding wire is a metal wire used as filler metal or simultaneously as a conductive electrode in welding. In gas welding and tungsten inert gas (TIG) welding, the welding wire is used as filler metal; in submerged arc welding, electroslag welding, and other gas metal arc welding, the welding wire serves as both filler metal and conductive electrode.

[0003] Chinese patent application CN202011012149.3 discloses a copper alloy stranded welding wire and its preparation method. The welding wire includes a central stranded welding wire, around which a first fastening mesh is fitted. A polyethylene film is wrapped around the first fastening mesh, and an outer layer of stranded welding wire is disposed outside the polyethylene film. A combustion accelerator is placed within the pores formed between the polyethylene film and the central stranded welding wire. A protective layer is disposed around the outer layer of stranded welding wire, and anti-slip strips are spaced apart around the protective layer. This invention can solve problems such as poor fusion, porosity, and hot cracking when welding certain materials with existing stranded welding wires. However, during combustion accelerator application, the accelerator enters the interior of the central stranded welding wire from the periphery, easily causing voids in the accelerator near the center of the central strand, affecting the uniformity of accelerator distribution and thus impacting product quality.

[0004] Therefore, there is a need for a high-strength nickel-based alloy welding electrode and its production process to improve the uniformity of combustion accelerator distribution and enhance product quality. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a high-strength nickel-based alloy welding electrode and its production process to improve the uniformity of combustion aid distribution and enhance product quality.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: a high-strength nickel-based alloy welding electrode includes a central stranded welding wire, wherein the central stranded welding wire includes a central welding wire, and multiple peripheral welding wires are stranded around the outer periphery of the central welding wire; A first fastening mesh is fitted around the central stranded welding wire. The first fastening mesh has multiple concave sections, each concave section being a spiral shape matching the outer welding wires. The multiple concave sections are arranged alternately with the multiple outer welding wires. A first combustion accelerator is placed in the pores formed between the first fastening mesh and the central welding wire. Multiple outer layer welding wires are twisted around the outer periphery of the first fastening mesh. The multiple outer layer welding wires correspond one-to-one with the multiple concave sections and are located at the concave sections. A second fastening mesh is fitted around both the outer periphery of the first fastening mesh and the outer layer welding wires. A polyethylene film is wrapped around the second fastening mesh. A second combustion accelerator is placed in the pores formed between the polyethylene film and the first fastening mesh. A protective layer is provided around the polyethylene film.

[0007] Preferably, the protective layer is provided with anti-slip strips at intervals around its perimeter.

[0008] Preferably, both the center stranded welding wire and the outer layer welding wire are made of nickel-based alloy.

[0009] A manufacturing process for high-strength nickel-based alloy welding electrodes includes the following steps; Step S1: Preparation of the center stranded welding wire Multiple outer welding wires are twisted together on the central welding wire body; Step S2, Installation of the first fastening mesh The prepared central stranded welding wire is formed by a forming machine that wraps multiple fine wires around the outer wire, making the strands of the central stranded welding wire fit together more tightly. Step S3: Application of the first combustion accelerant After the first fastening mesh is installed around the center stranded welding wire, it passes through a mold containing a combustion accelerator, and the combustion accelerator in the mold is evenly applied to the outer surface of the center stranded welding wire. Step S4, Concave Pressing Multiple spiral-shaped indentations are pressed out from the outside to the inside of the first fastening mesh. These indentations are arranged in an alternating pattern with multiple outer welding wires. Through the pressing of the indentations, the first combustion accelerator is pushed towards the center of the stranded welding wire and compacted, preventing voids from forming in the first combustion accelerator. Step S5: Stranding of the outer welding wire Multiple outer welding wires are twisted together around the periphery of the first fastening mesh, and the multiple outer welding wires are located in multiple concave areas respectively; Step S6: Installing the second fastening net Multiple fine wires are sleeved around the first fastening mesh and the outer layer of welding wire using a forming machine; Step S7, Application of the second combustion accelerator Through a mold containing a combustion accelerator, the combustion accelerator inside the mold is evenly applied to the outer surface of the second fastening mesh; Step S8: Wrapping with polyethylene film The entire assembly passes through a coating machine, where a polyethylene film is wrapped around its exterior as the central stranded welding wire moves. Step S9, Covering the protective layer After processing in step S8, a protective layer is applied to its outer perimeter. Step S10: Preparation of anti-slip strips The excess scrap material of the protective layer is cut off by a trimming machine, and then an anti-slip strip is set around the outer edge of the protective layer at intervals to finally obtain the required stranded welding wire.

[0010] Preferably, step S4 is performed using a pressing device.

[0011] Preferably, the pressing device includes a base, a pressing base is fixedly disposed on the top of the base, the pressing base has a cavity inside, and a pressing mechanism is disposed on the pressing base; The pressing mechanism includes a rotating shaft, one end of which is inserted into a pressing base. The rotating shaft is rotatably connected to the pressing base. A rotating ring is coaxially fixedly sleeved on the rotating shaft. Multiple pressing components are arranged circumferentially around the rotating shaft, and each pressing component corresponds to a concave shape. The rotating ring and the multiple pressing components are all located within the cavity of the pressing base. The pressing components are used to squeeze the first fastening mesh to create concave shapes. The rotating shaft is driven to rotate by a power component located outside the pressing base. The pressing base has a first central hole, and the rotating shaft has a second central hole. Both the first and second central holes are coaxially arranged with the rotating shaft.

[0012] Preferably, the pressing assembly includes a pressing rod perpendicular to the rotation axis. A pressing ball is fixedly disposed at one end of the pressing rod near the rotation axis, and a connecting plate is fixedly disposed at the other end of the pressing rod. A mounting plate is disposed on the side of the connecting plate away from the pressing rod. The mounting plate is fixedly disposed on the rotating ring, and the mounting plate is bolted to the connecting plate.

[0013] Preferably, multiple adjustment plates are provided between the mounting plate and the connecting plate, and the multiple adjustment plates are stacked along the length of the pressure rod.

[0014] Preferably, the pressing base includes a base body, which is a rectangular frame structure. A first cover plate and a second cover plate are detachably and fixedly provided at both ends of the opening of the rectangular frame structure of the base body. The first central hole is provided on the first cover plate, and the second cover plate is provided with a mounting hole. The rotating shaft is connected to the inner wall of the mounting hole through a bearing.

[0015] Preferably, the power assembly includes a motor fixedly mounted on a base, a drive wheel mounted on the motor, a driven wheel mounted on the rotating shaft, and the drive wheel and the driven wheel connected by multiple transmission belts.

[0016] Compared with the prior art, the advantages of the present invention are as follows: This invention discloses a high-strength nickel-based alloy welding electrode and its manufacturing process. By pressing the concave portion, the first combustion accelerator is pushed towards the center of the central stranded welding wire and compacted, preventing voids in the first combustion accelerator and thus improving the uniformity of combustion accelerator distribution, thereby enhancing product quality. In addition, the outer layer welding wire is placed in the concave portion, allowing the outer layer welding wire to cooperate with the concave portion, preventing relative movement in the length direction between the outer layer welding wire and the central stranded welding wire, improving product stability, and further enhancing product quality. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of a high-strength nickel-based alloy welding electrode according to the present invention; Figure 2 A 3D view of the pressing equipment; Figure 3 for Figure 2 The front view; Figure 4 for Figure 2 The right view; Figure 5 for Figure 2 Top view; Figure 6 This is a schematic diagram of the structure of the first cover plate; Figure 7 This is a schematic diagram of the second cover plate. Figure 8 This is a schematic diagram of the pressing mechanism; Figure 9 This is a schematic diagram of the pressing component; Figure 10 This is a schematic diagram of the power assembly.

[0018] in: 1. Central stranded welding wire; 2. First fastening mesh; 3. First combustion accelerator; 4. Outer layer welding wire; 5. Second fastening mesh; 6. Polyethylene film; 7. Second combustion accelerator; 8. Protective layer; 9. Anti-slip strip. Center welding wire 11, outer welding wire 12; Base 100, pressing base 200, pressing mechanism 300; The base body 201, the first cover plate 202, the second cover plate 203, and the mounting hole 204; Rotating shaft 301, bearing 302, rotating ring 303, pressing assembly 304, power assembly 305, first center hole 306, second center hole 307; Pressure bar 304.1, pressure ball 304.2, connecting plate 304.3, mounting plate 304.4, bolt 304.5, adjusting plate 304.6; Motor 305.1, drive wheel 305.2, driven wheel 305.3, transmission belt 305.4. Detailed Implementation

[0019] like Figure 1 As shown, a high-strength nickel-based alloy welding electrode in this embodiment includes a central stranded welding wire 1, which comprises a central welding wire 11. Six peripheral welding wires 12 are stranded around the central welding wire 11. A first fastening mesh 2 is fitted around the central stranded welding wire 1. The first fastening mesh 2 has six concave sections, each concave section being a spiral shape matching the peripheral welding wires 12. The six concave sections and the six peripheral welding wires 12 are arranged alternately. A first auxiliary material is disposed within the pores formed between the first fastening mesh 2 and the central welding wire 11. The first fastening mesh 2 has six outer welding wires 4 twisted around its outer periphery. The six outer welding wires 4 correspond one-to-one with and match six inner recesses. The outer welding wires 4 are located in the inner recesses. The outer periphery of the first fastening mesh 2 and the outer periphery of the outer welding wires 4 are both covered with a second fastening mesh 5. The outer periphery of the second fastening mesh 5 is covered with a polyethylene film 6. The second combustion aid 7 is placed in the pores formed between the polyethylene film 6 and the first fastening mesh 2. The outer periphery of the polyethylene film 6 is covered with a protective layer 8. The outer periphery of the protective layer 8 is provided with anti-slip strips 9 at intervals. Both the central stranded welding wire 1 and the outer layer welding wire 4 are made of nickel-based alloy. A method for producing high-strength nickel-based alloy welding electrodes includes the following steps; Step S1: Preparation of the center stranded welding wire 1 The six outer welding wires 12 are twisted together on the body of the central welding wire 11; Step S2, Installation of the first fastening mesh 2 The prepared central stranded welding wire 1 is formed by a forming machine to wrap multiple fine wires around the outer welding wire 12, so that the strands of the central stranded welding wire 1 fit together more closely. Step S3, Application of the first combustion accelerant 3 After the first fastening mesh 2 is installed around the center stranded welding wire 1, it passes through a mold containing a combustion aid, and the combustion aid inside the mold is evenly applied to the outer surface of the center stranded welding wire 1. Step S4, Concave Pressing Six spiral-shaped indentations are pressed out from the outside to the inside on the first fastening mesh 2. The six indentations are arranged in an alternating manner with the six stranded welding wires. Through the pressing of the indentations, the first combustion accelerator 3 is pushed towards the center of the stranded welding wire 1 and compacted, so as to prevent the first combustion accelerator 3 from producing voids. Step S5, Twisting of outer layer welding wire 4 Six outer welding wires 4 are twisted together around the first fastening mesh 2, and the six outer welding wires 4 are located in six concave areas respectively; Step S6, Installation of the second fastening net 5 Multiple fine wires are sleeved around the first fastening mesh 2 and the outer welding wire 4 using a forming machine; Step S7, Application of the second combustion accelerator 7 Through a mold containing a combustion accelerator, the combustion accelerator inside the mold is evenly applied to the outer surface of the second fastening mesh 5; Step S8, wrapping with polyethylene film 6 The entire assembly passes through a plastic coating machine, where the polyethylene film 6 is wrapped around its exterior as the central stranded welding wire 1 moves. Step S9, Covering with protective layer 8 After processing in step S8, a protective layer 8 is applied to its outer perimeter. Step S10, Preparation of anti-slip strip 9 The excess scrap material of the protective layer 8 is cut off by a trimming machine, and then a ring of anti-slip strips 9 is set around the outer perimeter of the protective layer 8 at intervals to finally obtain the required stranded welding wire.

[0020] Step S4 is performed using a pressing device; like Figure 2-9 As shown, the pressing device includes a base 100, a pressing base 200 is fixedly disposed on the top of the base 100, the pressing base 200 has a cavity inside, and a pressing mechanism 300 is disposed on the pressing base 200. The pressing mechanism 300 includes a rotating shaft 301, one end of which is inserted into a pressing base 200. The rotating shaft 301 is rotatably connected to the pressing base 200 via a bearing 302. A rotating ring 303 is coaxially fixedly sleeved on the rotating shaft 301. Six pressing components 304 are arranged circumferentially around the rotating shaft 301, and each of the six pressing components 304 corresponds to one of the six recesses. The rotating ring 303 and the six pressing components 304 are all located within the cavity of the pressing base 200. The rotating shaft 301 is driven to rotate by a power component 305, which is located on the pressing base. On the outside of the base 200, the pressing base 200 is provided with a first central hole 306, and the rotating shaft 301 is provided with a second central hole 307. The first central hole 306 and the second central hole 307 are both coaxially arranged with the rotating shaft 301. During the concave pressing, the product processed in step S3 passes through the first central hole 306 and the second central hole 307 in sequence. The pressing component 304 presses six concave shapes from the outside to the inside on the first fastening mesh 2. At the same time, the power component 305 drives the rotating shaft 301 to rotate. The rotation of the rotating shaft 301 drives the pressing component 304 to rotate synchronously through the rotating ring 303. In this way, in conjunction with the movement of the product, the concave shapes form a spiral. The pressing assembly 304 includes a pressing rod 304.1, which is perpendicular to the rotating shaft 301. A pressing ball 304.2 is fixedly disposed at one end of the pressing rod 304.1 near the rotating shaft 301, and a connecting plate 304.3 is fixedly disposed at the other end of the pressing rod 304.1. A mounting plate 304.4 is disposed on the side of the connecting plate 304.3 away from the pressing rod 304.1. The mounting plate 304.4 is fixedly disposed on the rotating ring 303. .4 is fixedly connected to the connecting plate 304.3 by bolts 304.5. When the concave pressing is performed, the pressure ball 304.2 is located between the two outer welding wires 12. The pressure ball 304.2 presses against the outer periphery of the first fastening mesh 2 and causes the first fastening mesh 2 to deform and produce a concave shape. During the rotation of the rotating ring 303, the pressure ball 304.2 is driven to rotate synchronously through the mounting plate 304.4, bolts 304.5, connecting plate 304.3 and pressure rod 304.1 in sequence. And through the movement of the product, the concave shape is formed into a spiral. Multiple adjusting plates 304.6 are provided between the mounting plate 304.4 and the connecting plate 304.3. The multiple adjusting plates 304.6 are stacked along the length of the pressure rod 304.1. By changing the number of adjusting plates 304.6 according to the product size, the position of the pressure ball 304.2 can be adjusted. The pressing base 200 includes a base body 201, which is a rectangular frame structure. At the two ends of the opening of the rectangular frame structure of the base body 201, a first cover plate 202 and a second cover plate 203 are respectively detachably fixed. A first central hole 306 is provided on the first cover plate 202, and a mounting hole 204 is provided on the second cover plate 203. The outer ring of the bearing 302 is installed on the inner wall of the mounting hole 204, and the rotating shaft 301 is connected to the second cover plate 203 through the bearing 302. The power assembly 305 includes a motor 305.1 fixedly mounted on the base 100, a drive wheel 305.2 mounted on the motor 305.1, a driven wheel 305.3 mounted on the rotating shaft 301, and the drive wheel 305.2 and the driven wheel 305.3 connected by a plurality of transmission belts 305.4. In summary, by pressing the concave area, the first combustion accelerator 3 is pushed towards the center of the central stranded welding wire 1 and compacted, preventing voids in the first combustion accelerator 3, thus improving the uniformity of combustion accelerator distribution and enhancing product quality. In addition, placing the outer layer welding wire 4 in the concave area allows the outer layer welding wire 4 to cooperate with the concave area, preventing relative movement in the length direction between the outer layer welding wire 4 and the central stranded welding wire 1, improving product stability, and further enhancing product quality.

[0021] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A high-strength nickel-based alloy welding electrode, characterized in that: It includes a central stranded welding wire (1), the central stranded welding wire (1) includes a central welding wire (11), and the outer periphery of the central welding wire (11) is twisted with multiple peripheral welding wires (12). The outer periphery of the central stranded welding wire (1) is provided with a first fastening mesh (2). The first fastening mesh (2) is provided with multiple concave sections. The concave sections are spiral-shaped and matched with the outer welding wires (12). The multiple concave sections are arranged alternately with the multiple outer welding wires (12). The first combustion accelerator (3) is provided in the pores formed between the first fastening mesh (2) and the central welding wire (11). The outer periphery of the first fastening mesh (2) is twisted with multiple outer layer welding wires (4). The multiple outer layer welding wires (4) correspond one-to-one with the multiple concave sections. The outer layer welding wires (4) are located at the concave sections. The outer periphery of the first fastening mesh (2) and the outer periphery of the outer layer welding wires (4) are both provided with a second fastening mesh (5). The outer periphery of the second fastening mesh (5) is covered with a polyethylene film (6). The pores formed between the polyethylene film (6) and the first fastening mesh (2) are provided with a second combustion accelerator (7). The outer periphery of the polyethylene film (6) is provided with a protective layer (8).

2. The high-strength nickel-based alloy welding electrode according to claim 1, characterized in that: The protective layer (8) is provided with anti-slip strips (9) at intervals around its periphery.

3. A high-strength nickel-based alloy welding electrode according to claim 1 or 2, characterized in that: Both the central stranded welding wire (1) and the outer layer welding wire (4) are made of nickel-based alloy.

4. A production process for a high-strength nickel-based alloy welding electrode according to any one of claims 1-3, characterized in that: Includes the following steps; Step S1, Preparation of the center stranded welding wire (1) Multiple outer welding wires (12) are twisted together on the main body of the central welding wire (11); Step S2, Installation of the first fastening net (2) The prepared central stranded welding wire (1) is formed by forming multiple fine wires around the outer welding wire (12) through a forming machine, so that the strands of the central stranded welding wire (1) fit together more closely. Step S3, Application of the first combustion accelerant (3) After the first fastening mesh (2) is installed around the center stranded welding wire (1), it passes through a mold containing a combustion aid, and the combustion aid in the mold is evenly applied to the outer surface of the center stranded welding wire (1). Step S4, Concave Pressing Multiple spiral concave shapes are pressed out from the outside to the inside on the first fastening mesh (2). The multiple concave shapes are arranged in an alternating manner with multiple peripheral welding wires (12). Through the pressing of the concave shapes, the first combustion accelerator (3) is pushed to move towards the center of the twisted welding wire (1) and compacted, so as to prevent the first combustion accelerator (3) from producing voids. Step S5, stranding of outer welding wire (4) Multiple outer welding wires (4) are twisted around the periphery of the first fastening mesh (2), and the multiple outer welding wires (4) are located in multiple concave areas respectively; Step S6, Installation of the second fastening net (5) Multiple fine wires are sleeved around the first fastening mesh (2) and the outer welding wire (4) by a forming machine; Step S7, Application of the second combustion accelerator (7) Through a mold containing a combustion accelerator, the combustion accelerator inside the mold is evenly applied to the outer surface of the second fastening mesh (5); Step S8, wrapping with polyethylene film (6) The whole thing is processed by a plastic coating machine, and as the central stranded welding wire (1) moves, the plastic coating machine wraps the polyethylene film (6) around its outside; Step S9, Covering the protective layer (8) After processing in step S8, a protective layer (8) is applied to its periphery. Step S10, Preparation of anti-slip strip (9) The excess scrap material of the protective layer (8) is cut off by a trimming machine, and then a ring of anti-slip strips (9) is set at intervals around the outer edge of the protective layer (8) to finally obtain the required stranded welding wire.

5. The production process of a high-strength nickel-based alloy welding electrode according to claim 4, characterized in that: Step S4 is performed using a pressing device.

6. The production process of a high-strength nickel-based alloy welding electrode according to claim 5, characterized in that: The pressing device includes a base (100), and a pressing base (200) is fixedly provided on the top of the base (100). The pressing base (200) has a cavity inside, and a pressing mechanism (300) is provided on the pressing base (200). The pressing mechanism (300) includes a rotating shaft (301), one end of which is inserted into the pressing base (200). The rotating shaft (301) is rotatably connected to the pressing base (200). A rotating ring (303) is coaxially fixedly sleeved on the rotating shaft (301). Multiple pressing components (304) are arranged on the rotating ring (303). The multiple pressing components (304) are arranged circumferentially around the rotating shaft (301) as the center. The multiple pressing components (304) correspond one-to-one with multiple concave sections. The rotating ring (303) and the multiple pressing components... All components (304) are located in the cavity of the pressing base (200). The pressing component (304) is used to squeeze the first fastening mesh (2) to create an inward concavity. The rotating shaft (301) is driven to rotate by the power component (305). The power component (305) is located outside the pressing base (200). The pressing base (200) is provided with a first central hole (306), and the rotating shaft (301) is provided with a second central hole (307). The first central hole (306) and the second central hole (307) are both coaxially arranged with the rotating shaft (301).

7. The production process of a high-strength nickel-based alloy welding electrode according to claim 6, characterized in that: The pressing assembly (304) includes a pressing rod (304.1), which is perpendicular to the rotating shaft (301). A pressing ball (304.2) is fixedly provided at one end of the pressing rod (304.1) near the rotating shaft (301), and a connecting plate (304.3) is fixedly provided at the other end of the pressing rod (304.1). A mounting plate (304.4) is provided on the side of the connecting plate (304.3) away from the pressing rod (304.1). The mounting plate (304.4) is fixedly provided on the rotating ring (303), and the mounting plate (304.4) is bolted to the connecting plate (304.3).

8. The production process of a high-strength nickel-based alloy welding electrode according to claim 7, characterized in that: Multiple adjusting plates (304.6) are provided between the mounting plate (304.4) and the connecting plate (304.3), and the multiple adjusting plates (304.6) are stacked along the length of the pressure rod (304.1).

9. The production process of a high-strength nickel-based alloy welding electrode according to claim 6, characterized in that: The pressing base (200) includes a base body (201), which is a rectangular frame structure. At the two ends of the opening of the rectangular frame structure of the base body (201), a first cover plate (202) and a second cover plate (203) are respectively detachably fixed. The first central hole (306) is provided on the first cover plate (202), and the second cover plate (203) is provided with a mounting hole (204). The rotating shaft (301) is connected to the inner wall of the mounting hole (204) through a bearing (302).

10. The production process of a high-strength nickel-based alloy welding electrode according to claim 6, characterized in that: The power assembly (305) includes a motor (305.1) fixedly mounted on a base (100), a drive wheel (305.2) mounted on the motor (305.1), a driven wheel (305.3) mounted on the rotating shaft (301), and the drive wheel (305.2) and the driven wheel (305.3) connected by multiple transmission belts (305.4).

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