High-strength nickel-based alloy monofilament and production process thereof

Abstract

The invention relates to a high-strength nickel base alloy monofilament which comprises a peripheral stranded welding wire body, protrusions and grooves are arranged on the peripheral wall of the peripheral stranded welding wire body, the protrusions are matched with the grooves, the protrusions extend in the length direction of the peripheral stranded welding wire body, and the grooves extend in the length direction of the peripheral stranded welding wire body. In the process of producing the welding wire by adopting a plurality of peripheral stranded welding wires, two adjacent peripheral stranded welding wire bodies stranded on the central stranded welding wire are in concave-convex fit through the bulges and the grooves, namely, the bulges are inserted into the grooves, so that the two adjacent peripheral stranded welding wire bodies are locked; the peripheral stranded welding wire body is prevented from loosening after being stranded on the central stranded welding wire; the protrusions and the grooves are formed in an extrusion mode, compared with a cutting mode, manufacturing materials of the peripheral stranded welding wire body can be saved, and cost is reduced.

Description

Technical Field

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

[0002] A welding electrode is a consumable electrode coated with flux for use in shielded metal arc welding (SMAW). It consists of two parts: the flux coating and the welding wire. Specialized steel wires used for welding can be classified into three categories: carbon structural steel, alloy structural steel, and stainless steel. The flux coating refers to the coating layer applied to the surface of the welding wire. During the welding process, the flux coating decomposes and melts, forming gas and slag, which provide mechanical protection, metallurgical treatment, and improve process performance. The welding wire, encased in the flux coating, together with the flux coating, determines the quality of the weld.

[0003] Chinese patent application CN202011012150.6 discloses a nickel-based alloy stranded welding electrode and its preparation method. The welding electrode includes a core wire coated with flux. The core wire comprises a central stranded welding wire, around which multiple peripheral stranded welding wires are stranded. Both the central and peripheral stranded welding wires are composed of multiple strands of single wire. The single wires of the central stranded welding wire are solid wires, while the single wires of the peripheral stranded welding wires are flux-cored wires. This invention can solve problems such as difficulties in large-scale welding and low welding efficiency. However, in the prior art, the peripheral stranded welding wires tend to loosen after being stranded onto the central stranded welding wire, thus affecting product quality.

[0004] Therefore, there is a need for a high-strength nickel-based alloy monofilament and its manufacturing process to prevent the outer stranded welding wire from becoming loose after being twisted onto the central stranded welding wire. 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 monofilament and its production process to avoid the loosening of the outer stranded welding wire after it is twisted onto the central stranded welding wire.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: a high-strength nickel-based alloy monofilament, comprising an outer stranded welding wire body, wherein the outer peripheral wall of the outer stranded welding wire body is provided with protrusions and grooves, the protrusions and grooves are matched, the protrusions extend along the length direction of the outer stranded welding wire body, and the grooves extend along the length direction of the outer stranded welding wire body.

[0007] Preferably, the outer stranded welding wire body is made of nickel-based alloy.

[0008] A process for producing high-strength nickel-based alloy monofilaments specifically includes the following steps: S1. The cylindrical outer stranded welding wire body enters the site; S2. Protrusions and grooves are extruded on the outer peripheral wall of the outer stranded welding wire body using an extrusion device; S2.1. Pass the outer stranded welding wire body through the mold hole on the mold base, and the extrusion mechanism acts on the outer peripheral wall of the outer stranded welding wire body to form a groove; During steps S2.2 and S2.1, the outer stranded welding wire body, which is subjected to compression, deforms and forms a protrusion in the forming groove on the inner sidewall of the mold hole.

[0009] Preferably, the extrusion equipment includes a worktable and an extrusion box, the extrusion box is fixedly mounted on the worktable, material holes are provided on both the left and right sides of the extrusion box, and an extrusion mechanism is provided inside the extrusion box; The extrusion mechanism includes a mold base and an extrusion wheel. The mold base has a mold hole with its axis parallel to the left-right direction. The inner peripheral wall of the mold hole has an extrusion groove and a forming groove. The forming groove extends to the left and right sides of the mold base, and the extrusion groove extends to the top of the mold base. The extrusion wheel is inserted into the extrusion groove, and the thickness of the extrusion wheel is equal to the width of the extrusion groove. The bottom of the extrusion wheel is located inside the mold hole, and the axis of the extrusion wheel is parallel to the front-back direction. The extrusion wheel is rotatably connected to the mold base through a support unit, and the extrusion wheel is driven to rotate by a first drive unit.

[0010] Preferably, two support units are provided, which are symmetrically arranged on the front and rear sides of the extrusion wheel. Each support unit includes a support frame located above the mold base. The support frame and the mold base are locked together by screws, and the shaft of the extrusion wheel is mounted on the support frame through a first bearing.

[0011] Preferably, multiple washers are provided between the support frame and the mold base, and the multiple washers are sequentially fitted onto the screw from top to bottom.

[0012] Preferably, the first drive unit includes a first drive gear and a first driven gear, which are mounted on the shaft of the extrusion wheel. The first drive gear meshes with the first driven gear, and the first drive gear is driven by a first motor.

[0013] Preferably, multiple extrusion mechanisms are provided, arranged sequentially from left to right. In two adjacent extrusion mechanisms, the depth of the forming groove gradually increases, and the depth of the extrusion wheel inserted into the mold hole gradually increases.

[0014] Preferably, the extrusion box is provided with a cleaning mechanism, which includes an air inlet pipe inserted from the top of the extrusion box. An air pump is provided at the top of the extrusion box and connected to the air inlet pipe.

[0015] Preferably, the cleaning mechanism further includes two cleaning components, each corresponding to one of the two material holes. Each cleaning component includes a rotating tube and a supporting tube. The rotating tube is parallel to the left-right direction and is located outside the extrusion chamber. Bristles are provided on the inner wall of the rotating tube. The supporting tube is coaxially arranged with the rotating tube and passes through the material hole. The supporting tube is sealed and fixedly connected to the inner wall of the material hole. One end of the supporting tube is inserted into the rotating tube. The rotating tube is rotatably connected to the supporting tube through a second bearing. The supporting tube is located on the side of the brushes closer to the extrusion chamber. The rotating tube is driven to rotate by a second drive unit.

[0016] Compared with the prior art, the advantages of the present invention are as follows: 1. In the process of producing welding wire using multiple peripheral stranded welding wires, the bodies of two adjacent peripheral stranded welding wires stranded on the central stranded welding wire achieve a convex-concave fit through protrusions and grooves. That is, the protrusions are inserted into the grooves to lock the bodies of the two adjacent peripheral stranded welding wires, preventing the bodies of the peripheral stranded welding wires from loosening after being stranded on the central stranded welding wire. 2. The protrusions and grooves are formed by extrusion, which saves on the material used to manufacture the outer stranded welding wire body compared to cutting, thus reducing costs; 3. During the extrusion of the outer stranded welding wire body, impurities on the outer stranded welding wire body are removed by airflow and brush rotation, so as to avoid impurities affecting the groove and protrusion forming effect, and can also achieve cooling of the outer stranded welding wire body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-strength nickel-based alloy monofilament according to the present invention; Figure 2 A schematic diagram of the structure when multiple outer stranded welding wire bodies are twisted together on a central stranded welding wire; Figure 3 A three-dimensional view of the extrusion equipment; Figure 4 for Figure 3 The main view; Figure 5 for Figure 3 Top view; Figure 6 for Figure 3 The left view; Figure 7 This is a schematic diagram of the internal structure of the extrusion box; Figure 8 This is a schematic diagram of the extrusion mechanism; Figure 9 for Figure 8 Enlarged view of part A; Figure 10 This is a three-dimensional view of the mold base; Figure 11 This is a schematic diagram of the cleaning component. Figure 12 This is a three-dimensional view of the extrusion box.

[0018] in: The outer stranded welding wire body is 100mm, the protrusion is 200mm, the groove is 300mm, and the central stranded welding wire is 400mm. Workbench 1, extrusion box 2, material hole 3, extrusion mechanism 4, cleaning mechanism 5; Mold base 41, extrusion roller 42, mold hole 43, extrusion groove 44, forming groove 45, support unit 46, first drive unit 47; Support frame 46.1, screw 46.2, first bearing 46.3, washer 46.4; First drive gear 47.1, first driven gear 47.2, first motor 47.3; 51 air inlet pipe, 52 air pump, 53 cleaning components; Rotating tube 53.1, support tube 53.2, brush bristles 53.3, second bearing 53.4, second drive unit 53.5; Second drive gear 53.51, second driven gear 53.52, second motor 53.53. Detailed Implementation

[0019] like Figure 1-2 As shown, a high-strength nickel-based alloy monofilament in this embodiment includes an outer stranded welding wire body 100. The outer stranded welding wire body 100 is made of nickel-based alloy, which has high strength and high oxidation resistance. The outer stranded welding wire body 100 is cylindrical. The outer peripheral wall of the outer stranded welding wire body 100 is provided with protrusions 200 and grooves 300. The protrusions 200 and grooves 300 match. The protrusions 200 extend along the length direction of the outer stranded welding wire body 100 to both ends of the outer stranded welding wire body 100. The grooves 300 also extend along the length direction of the outer stranded welding wire body 100 to both ends of the outer stranded welding wire body 100. During the production of welding wire, multiple peripheral stranded welding wire bodies 100 are twisted onto the central stranded welding wire 400. In two adjacent peripheral stranded welding wire bodies 100, a convex-concave fit is achieved through a protrusion 200 and a groove 300, that is, the protrusion 200 is inserted into the groove 300. In this way, the two adjacent peripheral stranded welding wire bodies 100 are locked together, preventing the peripheral stranded welding wire bodies 100 from loosening after being twisted onto the central stranded welding wire 400. A process for producing high-strength nickel-based alloy monofilaments specifically includes the following steps: S1. A cylindrical outer stranded welding wire body 100 enters the site; S2. Protrusions 200 and grooves 300 are extruded on the outer peripheral wall of the outer stranded welding wire body 100 using an extrusion device; S2.1. The outer stranded welding wire body 100 is passed through the mold hole 43 on the mold base 41 and the extrusion mechanism 4 acts on the outer peripheral wall of the outer stranded welding wire body 100 to form a groove 300. During steps S2.2 and S2.1, the outer stranded welding wire body 100, which is subjected to compression, deforms and forms a protrusion 200 in the forming groove 45 on the inner sidewall of the mold hole 43.

[0020] like Figure 3-11 As shown, the extrusion equipment includes a workbench 1 and an extrusion box 2. The extrusion box 2 is fixedly mounted on the workbench 1. Material holes 3 are provided on both the left and right sides of the extrusion box 2. An extrusion mechanism 4 is provided inside the extrusion box 2. The extrusion mechanism 4 includes a mold base 41 and an extrusion wheel 42. The mold base 41 is provided with a mold hole 43, the axis of which is parallel to the left-right direction. The inner peripheral wall of the mold hole 43 is provided with an extrusion groove 44 and a forming groove 45. The forming groove 45 extends to the left and right sides of the mold base 41, and the extrusion groove 44 extends to the top of the mold base 41. The extrusion wheel 42 is inserted into the extrusion groove 44. The thickness of the extrusion wheel 42 is equal to the width of the extrusion groove 44. The bottom of the extrusion wheel 42 is located inside the mold hole 43. The axis of the extrusion wheel 42 is parallel to the front-back direction. The extrusion wheel 42 is rotatably connected to the mold base 41 through a support unit 46. The extrusion wheel 42 is driven to rotate by a first drive unit 47. Two support units 46 are provided, and the two support units 46 are symmetrically arranged on the front and rear sides of the extrusion roller 42. Each support unit 46 includes a support frame 46.1, which is located above the mold base 41. The support frame 46.1 and the mold base 41 are locked together by screws 46.2. Multiple washers 46.4 are provided between the support frame 46.1 and the mold base 41. The multiple washers 46.4 are sequentially fitted onto the screws 46.2 from top to bottom. The depth of the extrusion roller 42 inserted into the mold hole 43 is adjusted by adjusting the number of washers 46.4. The shaft of the extrusion roller 42 is mounted on the support frame 46.1 through a first bearing 46.3. The first drive unit 47 includes a first drive gear 47.1 and a first driven gear 47.2, which are mounted on the rotating shaft of the extrusion roller 42. The first drive gear 47.1 meshes with the first driven gear 47.2, and the first drive gear 47.1 is driven by a first motor 47.3. The outer stranded welding wire body 100 passes through the mold hole 43. In fact, the diameter of the mold hole 43 is equal to the diameter of the outer stranded welding wire body 100. When the outer stranded welding wire body 100 moves in the mold hole 43, the extrusion roller 42 extrudes the outer stranded welding wire body 100, forming a groove 300 on the outer peripheral wall of the outer stranded welding wire body 100. The extruded outer stranded welding wire body 100 deforms into the forming groove 45 and forms a protrusion 200. The extrusion mechanism 4 is provided in multiple ways, arranged sequentially from left to right. In two adjacent extrusion mechanisms 4, the depth of the forming groove 45 gradually increases, and the depth of the extrusion wheel 42 inserted into the mold hole 43 gradually increases, so as to realize step extrusion forming and avoid excessive deformation of the outer stranded welding wire body 100 due to one extrusion forming, which would cause cracks. In addition, the protrusions 200 and grooves 300 are formed by extrusion, which saves material in the manufacturing of the outer stranded welding wire body 100 compared to the cutting method. The extrusion box 2 is equipped with a cleaning mechanism 5. The cleaning mechanism 5 delivers air from outside the extrusion box 2 into the extrusion box 2 and then discharges it from the two material holes 3. Under the action of the airflow, the impurities on the outer stranded welding wire body 100 are blown away, so as to avoid the impurities affecting the forming effect of the groove 300 and the protrusion 200. The cleaning mechanism 5 includes an air inlet pipe 51, which is inserted from the top of the squeezing box 2. An air pump 52 is provided on the top of the squeezing box 2. The air pump 52 is connected to the air inlet pipe 51. When the air pump 52 is started, air from outside the squeezing box 2 is delivered into the squeezing box 2 through the air inlet pipe 51. The cleaning mechanism 5 also includes two cleaning components 53, which correspond one-to-one with the two material holes 3. The cleaning components 53 are used to brush off impurities on the outer stranded welding wire body 100, thereby improving the impurity removal effect of the outer stranded welding wire body 100. The cleaning assembly 53 includes a rotating tube 53.1 and a support tube 53.2. The rotating tube 53.1 is parallel to the left-right direction and is located outside the extrusion box 2. Brush bristles 53.3 are provided on the inner wall of the rotating tube 53.1. The support tube 53.2 is coaxially arranged with the rotating tube 53.1 and passes through the material hole 3. The support tube 53.2 is sealed and fixedly connected to the inner wall of the material hole 3. One end of the support tube 53.2 is inserted into the rotating tube 53.1. The rotating tube 53.1 is rotatably connected to the support tube 53.2 through a second bearing 53.4. The support tube 53.2 is located on the side of the brush bristles 53.3 closer to the extrusion box 2. The rotating tube 53.1 is driven to rotate by a second drive unit 53.5. The second drive unit 53.5 includes a second drive gear 53.51 and a second driven gear 53.52. The second driven gear is mounted on the outer peripheral wall of the rotating tube 53.1. The second drive gear 53.51 meshes with the second driven gear 53.52. The second drive gear 53.51 is driven by the second motor 53.53. The outer stranded welding wire body 100 passes through the rotating tube 53.1 and the support tube 53.2 in sequence, and the outer stranded welding wire body 100 abuts against the brush bristles 53.3. The second motor 53.53 is started, causing the second drive gear 53.51 to drive the second driven gear 53.52 to rotate, thereby causing the rotating tube 53.1 to drive the brush bristles 53.3 to rotate, so that the brush bristles 53.3 brush off the impurities of the outer stranded welding wire body 100. With the help of airflow, the brushed impurities are blown away. Moreover, because the outer stranded welding wire body 100 generates heat when it is squeezed, the outer stranded welding wire body 100 is cooled down by the airflow. In summary, during the production of this high-strength nickel-based alloy monofilament welding wire, the two adjacent outer stranded welding wire bodies 100 twisted on the central stranded welding wire achieve a convex-concave fit through the protrusion 200 and the groove 300. That is, the protrusion 200 is inserted into the groove 300 to lock the two adjacent outer stranded welding wire bodies 100, thus preventing the outer stranded welding wire bodies 100 from loosening after being twisted on the central stranded welding wire 400. In addition, the production process of this high-strength nickel-based alloy monofilament uses an extrusion method to form the protrusions 200 and grooves 300. Compared with the cutting method, it can save the manufacturing material of the outer stranded welding wire body 100 and reduce costs. Secondly, during the extrusion of the outer stranded welding wire body 100, impurities on the outer stranded welding wire body 100 are removed by airflow and the rotation of the brush bristles 53.3, so as to avoid impurities affecting the forming effect of the groove 300 and the protrusion 200, and can also cool down the outer stranded welding wire body 100.

[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 monowire, comprising an outer stranded welding wire body (100), characterized in that: The outer peripheral wall of the outer stranded welding wire body (100) is provided with a protrusion (200) and a groove (300), the protrusion (200) and the groove (300) are matched, the protrusion (200) extends along the length direction of the outer stranded welding wire body (100), and the groove (300) extends along the length direction of the outer stranded welding wire body (100).

2. The high-strength nickel-based alloy monofilament according to claim 1, characterized in that: The outer stranded welding wire body (100) is made of nickel-based alloy.

3. A production process for high-strength nickel-based alloy monofilaments, characterized in that: Specifically, the steps include the following: S1. The cylindrical outer stranded welding wire body (100) enters the field; S2. Protrusions (200) and grooves (300) are extruded on the outer peripheral wall of the outer stranded welding wire body (100) using an extrusion device. S2.

1. Pass the outer stranded welding wire body (100) through the mold hole (43) on the mold base (41) and apply it to the outer peripheral wall of the outer stranded welding wire body (100) through the extrusion mechanism (4) to form a groove (300). During the operation of step S2.2 and step S2.1, the outer stranded welding wire body (100) under pressure deforms and forms a protrusion (200) in the forming groove (45) on the inner sidewall of the mold hole (43).

4. The high-strength nickel-based alloy monofilament production process according to claim 1, characterized in that: The extrusion equipment includes a workbench (1) and an extrusion box (2). The extrusion box (2) is fixedly installed on the workbench (1). Material holes (3) are provided on both the left and right sides of the extrusion box (2). An extrusion mechanism (4) is provided inside the extrusion box (2). The extrusion mechanism (4) includes a mold base (41) and an extrusion wheel (42). The mold base (41) is provided with a mold hole (43). The axis of the mold hole (43) is parallel to the left and right direction. The inner peripheral wall of the mold hole (43) is provided with an extrusion groove (44) and a forming groove (45). The forming groove (45) extends to the left and right sides of the mold base (41). The extrusion groove (44) extends to the top of the mold base (41). The extrusion wheel (42) is inserted into the extrusion groove (44). The thickness of the extrusion wheel (42) is equal to the width of the extrusion groove (44). The bottom of the extrusion wheel (42) is located in the mold hole (43). The axis of the extrusion wheel (42) is parallel to the front and back direction. The extrusion wheel (42) is rotatably connected to the mold base (41) through a support unit (46). The extrusion wheel (42) is driven to rotate by a first drive unit (47).

5. The high-strength nickel-based alloy monofilament production process according to claim 4, characterized in that: Two support units (46) are provided, and the two support units (46) are symmetrically arranged on the front and rear sides of the extrusion wheel (42). Each support unit (46) includes a support frame (46.1), which is located above the mold base (41). The support frame (46.1) and the mold base (41) are locked together by screws (46.2). The shaft of the extrusion wheel (42) is mounted on the support frame (46.1) through a first bearing (46.3).

6. The high-strength nickel-based alloy monofilament production process according to claim 5, characterized in that: Multiple washers (46.4) are provided between the support frame (46.1) and the mold base (41), and the multiple washers (46.4) are sequentially fitted onto the screw (46.2) from top to bottom.

7. The high-strength nickel-based alloy monofilament production process according to claim 4, characterized in that: The first drive unit (47) includes a first drive gear (47.1) and a first driven gear (47.2), which are mounted on the shaft of the extrusion wheel (42). The first drive gear (47.1) meshes with the first driven gear (47.2), and the first drive gear (47.1) is driven by a first motor (47.3).

8. The high-strength nickel-based alloy monofilament production process according to claim 4, characterized in that: The extrusion mechanism (4) is provided in multiple ways. The multiple extrusion mechanisms (4) are arranged sequentially from left to right. In two adjacent extrusion mechanisms (4), the groove depth of the forming groove (45) gradually increases, and the depth of the extrusion wheel (42) inserted into the mold hole (43) gradually increases.

9. The high-strength nickel-based alloy monofilament production process according to claim 4, characterized in that: The extrusion box (2) is provided with a cleaning mechanism (5), which includes an air inlet pipe (51) inserted from the top of the extrusion box (2). An air pump (52) is provided on the top of the extrusion box (2), and the air pump (52) is connected to the air inlet pipe (51).

10. The high-strength nickel-based alloy monofilament production process according to claim 9, characterized in that: The cleaning mechanism (5) further includes two cleaning components (53), each corresponding to one of the two material holes (3). Each cleaning component (53) includes a rotating tube (53.1) and a supporting tube (53.2). The rotating tube (53.1) is parallel to the left-right direction and is located outside the extrusion box (2). Brush bristles (53.3) are provided on the inner wall of the rotating tube (53.1). The supporting tube (53.2) is coaxially arranged with the rotating tube (53.1). The support tube (53.2) passes through the material hole (3), and the support tube (53.2) is sealed and fixedly connected to the inner wall of the material hole (3). One end of the support tube (53.2) is inserted into the rotating tube (53.1). The rotating tube (53.1) is rotatably connected to the support tube (53.2) through the second bearing (53.4). The support tube (53.2) is located on the side of the bristles (53.3) near the extrusion box (2). The rotating tube (53.1) is driven to rotate by the second drive unit (53.5).

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