Spiral welding wire

Abstract

The utility model relates to a spiral welding wire. The spiral welding wire comprises a welding wire body of a spiral structure, the welding wire body is provided with a spiral outer side face, and one or more spiral grooves with the length extending in the spiral direction are formed in the outer side face. When the welding wire of the spiral structure is used for welding, the section of the end of a welding spot of the welding wire is in a rotating state in the process that the welding wire is pushed forwards and melted, and rotating electric arcs and rotating molten drops are generated, so that a rotating molten pool is formed, and the welding quality is guaranteed. And rotating electric arcs and rotating molten drops are generated during metal welding, so that a rotating molten pool is formed, the cladding efficiency is high, energy is saved, stable welding quality is guaranteed, and the welding efficiency is improved. And rotary molten drops are formed in a non-metal phase, bonding is firm, and efficiency is improved. In addition, the welding wire is generally a single welding wire, and compared with a welding wire formed by twisting a plurality of strands in the prior art, the manufacturing process is relatively simple, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of welding wires, in particular to a spiral welding wire. Background Art

[0002] Welding wire is a welding material used as a metal filler or as a conductive electrode in metal welding, and provides molten metal and heat to melt the base material for bonding in non-metal welding. There are two common types of traditional welding wires: one is a single circular shape, which is difficult or impossible to produce a rotating arc, rotating droplet, or rotating molten pool during welding, resulting in low deposition efficiency, small weld width and depth, and difficult and unstable welding quality. The other type is made of multiple strands of welding wire wound by rotation. Although it can achieve a rotating arc and a rotating molten pool, it has problems such as high processing difficulty, high production cost, high requirements for welding equipment and welding process, and is difficult to promote. Therefore, there is a need for a welding wire with low production cost, simple manufacturing process, and the ability to achieve a rotating arc, a rotating molten pool, etc. to ensure welding quality. Utility Model Content

[0003] The purpose of the utility model is to provide a spiral welding wire to solve the above problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, a spiral welding wire of the present invention adopts the following technical solution: a spiral welding wire, comprising a welding wire body with a spiral structure, the welding wire body having a spiral outer side surface, and one or more spiral grooves extending in the spiral direction are arranged on the outer side surface.

[0005] The spiral structure of the welding wire body is a left-hand spiral structure or a right-hand spiral structure.

[0006] Any two adjacent "coils" of the welding wire body are spaced apart.

[0007] The pitch between any two adjacent "coils" of the welding wire body is zero, that is, there is no pitch setting.

[0008] The cross section of the welding material forming the spiral structure welding wire body is a circular cross section, and the circular cross section is provided with one or more notches formed by corresponding grooves along the circumference.

[0009] The cross section of the welding material forming the spiral structure welding wire body is a rectangular cross section, and one long side of the rectangular cross section is provided with one or more notches formed by corresponding grooves.

[0010] The cross-section of the welding material forming the spiral structure welding wire body is a single-sided boss shape or a double-sided boss shape. The single-sided boss shape has two or more bosses arranged at intervals on a single side, and a gap formed by corresponding grooves is formed between adjacent bosses; the double-sided boss shape has two or more bosses arranged at intervals on opposite sides, and a gap formed by corresponding grooves is formed between two adjacent bosses on each side.

[0011] The cross section of the welding material forming the spiral structure welding wire body is a polygon other than a rectangle. After the polygonal cross section forms the welding wire body, the outer side surface located on the outside has one or more notches formed by corresponding grooves.

[0012] The welding wire body has a central hole, and a straight strip-shaped auxiliary welding wire whose length extends along the length direction of the central hole is passed through the central hole to increase the melting amount of the welding wire.

[0013] The welding wire body has a central hole, and the central hole and / or the spiral grooves on the outer side of the welding wire body are filled with medicament.

[0014] The beneficial effects of the present invention are as follows: when the spiral-structured welding wire is welded, the welding wire is advanced forward and during the melting process, the cross-section of the welding point end of the welding wire presents a rotating shape, generating a rotating arc and a rotating molten droplet, thereby forming a rotating molten pool, ensuring the welding quality. During metal welding, a rotating arc and a rotating molten droplet are generated, thereby forming a rotating molten pool, which has high cladding efficiency, saves energy, ensures stable welding quality, and improves welding efficiency. Rotating molten droplets are formed in the non-metallic phase, which ensures strong bonding and improves efficiency. Moreover, the welding wire in the present invention is generally a single welding wire, and compared with the welding wire twisted with multiple strands in the prior art, the manufacturing process is relatively simple and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a spiral welding wire according to a first embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the cross section of the spiral welding wire;

[0017] Figure 3 yes Figure 1 Schematic diagram of the cross section of the welding material;

[0018] Figure 4 This is a structural schematic diagram of a second embodiment of a spiral welding wire of the present utility model;

[0019] Figure 5 yes Figure 4 Schematic diagram of the cross section of the spiral welding wire;

[0020] Figure 6 yes Figure 4Schematic diagram of the cross section of the welding material;

[0021] Figure 7 This is a schematic cross-sectional view of the welding material in the third embodiment of a spiral welding wire of the present invention;

[0022] Figure 8 This is a schematic cross-sectional view of the welding material in the fourth embodiment of a spiral welding wire of the present invention;

[0023] Figure 9 This is a schematic cross-sectional view of the welding material in the fifth embodiment of a spiral welding wire of the present invention;

[0024] Figure 10 This is a schematic cross-sectional view of the welding material in the sixth embodiment of a spiral welding wire of the present invention;

[0025] Figure 11 This is a schematic cross-sectional view of the welding material in the seventh embodiment of a spiral welding wire of the present invention;

[0026] Figure 12 This is a structural schematic diagram of an eighth embodiment of a spiral welding wire of the present utility model;

[0027] Figure 13 yes Figure 12 Schematic diagram of the cross section of the spiral welding wire;

[0028] Figure 14 This is a structural schematic diagram of a ninth embodiment of a spiral welding wire of the present invention;

[0029] Explanation of the accompanying symbols: 1. welding wire body; 2. outer side surface; 3. spiral groove; 4. "coil" interval; 5. center channel; 6. welding material; 7. protrusion. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0031] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] The first embodiment of a spiral welding wire of the present invention is as follows: Figure 1-Figure 3As shown, the welding wire body 1 includes a spiral structure, the welding wire body 1 has a spiral outer side 2, and one or more spiral grooves 3 are provided on the outer side, the length of which extends along the spiral direction. In this embodiment, the number of spiral grooves is 1. The spiral structure of the welding wire body is a left-hand spiral structure, and can also be a right-hand spiral structure. Any two adjacent "coils" of the welding wire body are spaced apart, such as Figure 1 As shown, the reference numeral 4 represents the "coil" interval 4, which can also be understood as the "pitch". The "coil" here is defined by analogy with the coil of a spring. It is an analogous structural description and should be understood by analogy with the definition of the coil of a spring. In terms of the simple pitch description, the following explanation is made for ease of understanding: Figure 1 There is a pitch setting. Figure 12 In actual situations, it is possible to select whether to set a pitch or not according to actual needs. In this embodiment, the cross section of the welding material 6 forming the spiral structure welding wire body is a rectangular cross section, such as Figure 3 As shown, one of the long sides of the rectangular cross section has a notch formed by a corresponding groove 3 .

[0033] The welding wire body has a central channel 5, into which a straight auxiliary welding wire, extending along the length of the central channel, is inserted to increase the amount of welding wire melted. In other embodiments, the central channel may be free of welding wire, provided that the amount of melting can be guaranteed. The central channel is filled with flux, forming a spiral flux-cored welding wire. The spiral grooves on the outer surface of the welding wire body can also be filled with flux, forming a spiral flux-cored welding wire. Flux can also be filled in both the central channel and the spiral grooves. Flux can be selected based on actual needs. For example, an activator can be used to remove oxides and other impurities from the metal surface, improving weld quality; a welding flux can be used to enhance weld wettability and achieve a more uniform weld; a flux can be used to lower welding temperatures and reduce deformation and warping; an additive can be used to increase weld strength and toughness after welding; and gasifiers, slag formers, and deoxidizers suitable for use in special environments such as outdoor environments and enclosed spaces can also be used.

[0034] This spiral welding wire is suitable for joining metal and non-metal materials. Its spiral structure allows the cross-section of the wire's weld end to rotate as the wire advances and melts during welding, generating a rotating arc and molten droplets, thereby forming a rotating molten pool and ensuring high-quality welding and bonding. When welding metal phases, a rotating arc and molten droplets are generated, forming a rotating molten pool. This increases cladding efficiency, saves energy, ensures stable welding quality, and improves welding efficiency. Rotating droplets form on non-metallic phases, ensuring strong bonding and improving efficiency. Specifically, the spiral welding wire is provided with grooves so that the cross section of the welding wire is divided into multiple protrusions like "petals" by the grooves, and each protrusion is like each strand of welding wire in a multi-strand welding wire. 1) Multiple arcs are formed during welding; 2) the wire rotates when feeding the welding wire forward, further enhancing the effect of the rotating arc; 3) multi-point melting, which rotates when feeding the welding wire forward to form rotating molten droplets, further increasing the melting width and depth; 4) multi-point melting improves the deposition efficiency; 5) there is a rotating arc, multi-point melting, and high deposition efficiency, so large diameter welding wire can be made, which is suitable for welding large and thick plates.

[0035] A second embodiment of a spiral welding wire of the present invention is as follows: Figure 4-6 As shown, the only difference from the first embodiment is the number of spiral grooves 3 on the outer side of the welding wire body. In this embodiment, the number of spiral grooves is 2.

[0036] A third embodiment of a spiral welding wire of the present invention is as follows: Figure 7 As shown, the only difference from the first embodiment is the number of spiral grooves 3 on the outer side of the welding wire body. In this embodiment, the number of spiral grooves is 3.

[0037] A fourth embodiment of a spiral welding wire of the present invention is as follows: Figure 8 As shown, the difference from Example 1 is that the cross-sectional shape of the welding material is different. In this embodiment, the cross-sectional shape of the welding material is a double-sided boss shape, specifically a double-sided boss shape having two bosses 7 spaced apart on opposite sides, and a gap formed by the corresponding groove 3 between the two bosses.

[0038] A fifth embodiment of a spiral welding wire of the present invention is as follows Figure 9 As shown, the difference from the fourth embodiment is the number of bosses on each side. In this embodiment, the number of bosses 7 on each side is three. In other embodiments, the number of bosses on each side can also be adjusted according to actual needs.

[0039] A sixth embodiment of a spiral welding wire of the present invention is as follows: Figure 10As shown, the difference from the first embodiment lies in the cross-sectional shape of the welding material. In this embodiment, the cross-sectional shape of the welding material is a single-sided boss shape. Specifically, the single-sided boss shape has two spaced bosses 7 on only one side, with a gap formed by the corresponding groove 3 between the two bosses. The cross-sectional shape of the welding material has a gap of half the size of a groove at both ends. This configuration allows the half grooves at both ends to form a new, complete groove when the welding material is formed into a spiral welding wire.

[0040] The seventh embodiment of a spiral welding wire of the present invention is as follows: Figure 11 As shown, the only difference from the sixth embodiment is the number of bosses. In this embodiment, the number of bosses 7 on each side is three. In other embodiments, the number of bosses can also be adjusted according to actual needs.

[0041] The eighth embodiment of a spiral welding wire of the present invention is as follows: Figure 12-13 The spiral welding wire shown is formed from a welding material having the cross-sectional shape described in Example 7. The spacing between the "coils" of the welding wire, i.e., the "pitch" mentioned above, is zero, i.e., there is no pitch. In other words, in this embodiment, there is no spacing between the "coils," i.e., a zero pitch structure.

[0042] A ninth embodiment of a spiral welding wire of the present invention is as follows: Figure 14 As shown, the difference from the second embodiment is that the "coil" spacing between the "coils" is different in size. In this embodiment, the structure of large "coil" spacing, that is, large "pitch", is the corresponding appendix of the second embodiment. Figure 4 The "coil" interval 4 is relatively long. The presence or absence and size of the pitch can be selected according to actual needs.

[0043] In other embodiments of the present invention, the cross-section of the welding material forming the spiral structure welding wire body is a circular cross-section, and the circular cross-section has one or more notches formed by corresponding grooves along the circumferential direction; the cross-section of the welding material forming the spiral structure welding wire body is a polygon other than a rectangle, and after the polygonal cross-section forms the welding wire body, the outer side surface located on the outer side has one or more notches formed by corresponding grooves.

[0044] In the above description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal connection between two components or the interaction between two components. Therefore, unless otherwise expressly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0046] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise clearly specified.

Claims

1. A spiral welding wire, characterized in that: The invention comprises a welding wire body with a hollow spiral structure, wherein the welding wire body has a spiral outer side surface, and one or more spiral grooves extending in the spiral direction are arranged on the outer side surface; any two adjacent "coils" of the welding wire body are arranged at intervals.

2. The spiral welding wire according to claim 1, characterized in that: The spiral structure of the welding wire body is a left-hand spiral structure or a right-hand spiral structure.

3. The spiral welding wire according to claim 1 or 2, characterized in that: The cross section of the welding material forming the spiral structure welding wire body is a circular cross section, and the circular cross section is provided with one or more notches formed by corresponding grooves along the circumference.

4. The spiral welding wire according to claim 1 or 2, characterized in that: The cross section of the welding material forming the spiral structure welding wire body is a rectangular cross section, and one long side of the rectangular cross section is provided with one or more notches formed by corresponding grooves.

5. The spiral welding wire according to claim 1 or 2, characterized in that: The cross-section of the welding material forming the spiral structure welding wire body is a single-sided boss shape or a double-sided boss shape. The single-sided boss shape has two or more bosses arranged at intervals on a single side, and a gap formed by corresponding grooves is formed between adjacent bosses; the double-sided boss shape has two or more bosses arranged at intervals on opposite sides, and a gap formed by corresponding grooves is formed between two adjacent bosses on each side.

6. The spiral welding wire according to claim 1 or 2, characterized in that: The cross section of the welding material forming the spiral structure welding wire body is a polygon other than a rectangle. After the polygonal cross section forms the welding wire body, the outer side surface located on the outside has one or more notches formed by corresponding grooves.

7. The spiral welding wire according to claim 1, wherein: The welding wire body has a central hole, and a straight strip-shaped auxiliary welding wire whose length extends along the length direction of the central hole is passed through the central hole to increase the melting amount of the welding wire.

8. The spiral welding wire according to claim 1, wherein: The welding wire body has a central hole, and the central hole and / or the spiral grooves on the outer side of the welding wire body are filled with medicament.

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