Contact tube with high abrasion resistance

Abstract

The utility model relates to the technical field of welding, in particular to a contact tube with high abrasion resistance and a manufacturing method thereof, which comprises a contact tube body, a connector arranged at the rear end of the contact tube body, a cone section arranged at the front end of the contact tube body, a cylindrical section arranged between the connector and the cone section, and a welding wire channel arranged in the contact tube body and used for a welding wire to pass through. The welding wire channel extends in the length direction of the contact tube body and comprises an expansion section and a contraction section, the diameter of the expansion section is larger than that of the contraction section, the section of the welding wire channel is round, the welding wire channel penetrates through the contact tube body, and a boss is arranged on the rear portion of the cylindrical section and expands outwards in the radial direction of the cylindrical section. The diameter of the connector is smaller than that of the cylindrical section. According to the high-abrasion-resistance contact tube and the manufacturing method thereof, the electric conductivity is high, and welding wire adhesion caused by poor arc striking can be avoided. In the welding process, wear resistance is achieved, hole diameter abrasion is reduced, and therefore welding quality is guaranteed, welding efficiency is improved, and production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a high-wear-resistant conductive nozzle and a manufacturing method thereof. Background Art

[0002] In the field of welding, the conductive tip is a key component of the welding gun, which plays an important role in guiding the welding wire and transmitting the current. With the continuous advancement of industrial technology, the welding process has higher and higher performance requirements for the conductive tip. During long-term use, the traditional conductive tip will often suffer from wear and heat problems due to the friction between the welding wire and the conductive tip through hole and the uneven current transmission, which will affect the welding quality and efficiency.

[0003] Since traditional conductive nozzles are mostly made of pure copper or copper-chromium-zirconium alloy, such conductive nozzles wear quickly in high-current welding environments and need to be replaced frequently, which increases production costs and reduces production efficiency. In order to solve the current problems with conductive nozzles, the industry has been constantly exploring and researching new conductive nozzle technologies. Among them, the optimization of the shape and material of the conductive nozzle has become an important research direction. The proposal of this patent provides new ideas and methods for the development of conductive nozzle technology, which is expected to bring more efficient and reliable welding solutions to the welding industry. Utility Model Content

[0004] The utility model aims to provide a highly wear-resistant conductive nozzle with high structural strength and low wear resistance and a manufacturing method thereof in view of the above problems.

[0005] To achieve the above-mentioned purpose, the utility model discloses a highly wear-resistant conductive nozzle, which has the following structural features: it comprises a conductive nozzle body, a joint is provided at the rear end of the conductive nozzle body, a cone section is provided at the front end of the conductive nozzle body, a cylindrical section is provided between the joint and the cone section, a welding wire channel for the welding wire to pass through is provided in the conductive nozzle body, and the welding wire channel extends along the length direction of the conductive nozzle body.

[0006] The design ensures the stability and durability of the conductive nozzle by setting a joint at the rear end, a cone section at the front end, and a cylindrical section between the joint and the cone section.

[0007] The conical section can easily fix the welding wire, reduce interference with the welding material, and facilitate welding of narrow welds. The joint design is convenient for connection with external equipment, and the conical section helps to smoothly guide the welding wire. The welding wire channel extends along the length of the conductive nozzle body, ensuring that the welding wire can remain stable and not easily deviate when passing through the conductive nozzle, thereby improving the welding quality.

[0008] Regarding the improvement of the material of the conductive tip, the conductive tip body is made of copper alloy, and its material composition is Cu-0.2wt%Al-0.1wt%Ti. The improvement of the conductive tip material improves the conductive performance of the conductive tip, while enhancing its mechanical strength and wear resistance. The addition of aluminum and titanium makes the copper alloy have better oxidation resistance and corrosion resistance, thereby extending the service life of the conductive tip.

[0009] Regarding the specific structure of the welding wire channel, the welding wire channel includes an expansion section and a contraction section, and the diameter of the expansion section is larger than that of the contraction section. The expansion section provides sufficient space for the welding wire, while the contraction section ensures that the welding wire can fit closely to the channel wall when passing through, ensuring effective current transmission, helping the welding wire to smoothly transition when entering the conductive nozzle, reducing the possibility of wire jamming, and facilitating the fixing of the direction and length of the welding wire, thereby controlling the welding quality.

[0010] In order to avoid deformation or breakage of the welding wire, the cross section of the welding wire channel is circular, and the welding wire channel runs through the conductive nozzle body. This allows the welding wire to be evenly stressed in the channel, reducing deformation or breakage of the welding wire caused by uneven stress. The welding wire channel runs through the conductive nozzle body, ensuring that the welding wire can maintain stable conductivity throughout the entire length of the conductive nozzle, thereby improving the stability and efficiency of welding.

[0011] In order to improve the stability of the contact tip installation, a boss is provided at the rear of the cylindrical section, and the boss expands outward along the radial direction of the cylindrical section. The contact area between the contact tip and the welding equipment is increased, and the stability and reliability of the connection are improved. The boss expands outward along the radial direction of the cylindrical section, making the installation and removal process more convenient.

[0012] Preferably, the diameter of the joint is smaller than the diameter of the cylindrical section, so that the conductive nozzle can be more compact when connected to the welding equipment, reducing the space occupied.

[0013] Preferably, the outer wall of the joint is provided with an external thread for matching with the welding equipment. This allows the conductive nozzle to be firmly connected to the welding equipment and is not easy to loosen or fall off. At the same time, the design of the external thread also complies with industry standards, facilitating compatibility and interchangeability with other equipment.

[0014] A method for manufacturing a highly wear-resistant conductive nozzle, characterized in that it comprises the following steps:

[0015] Step 1) heating Cu-0.2wt%Al-0.1wt%Ti alloy powder under vacuum conditions;

[0016] Step 2) crushing the alloy powder and placing it in a conductive nozzle mold;

[0017] Step 3) The alloy powder is consolidated by hot isostatic pressing.

[0018] Heating under vacuum conditions can remove gases and impurities in the alloy powder and reduce the possibility of oxidation, thereby ensuring the high purity and excellent performance of the final conductive nozzle. The selection of Cu-0.2wt%Al-0.1wt%Ti alloy powder ensures the high conductivity, high mechanical strength and excellent corrosion resistance of the conductive nozzle; the hot isostatic pressing consolidation process can tightly combine the alloy powder particles under high temperature and high pressure to form a conductive nozzle with excellent mechanical properties and conductive properties. Compared with traditional casting or processing methods, conductive nozzles with uniform structure and stable performance can be produced, and material waste and processing costs can be reduced.

[0019] The method also includes: in step 1, the heating temperature is 950°C. The heating temperature of 950°C is determined based on the physical and chemical properties of the alloy powder, which can make the alloy powder have sufficient fluidity but will not cause excessive oxidation or burning due to excessive temperature. The metal elements in the alloy powder can fully diffuse and combine to form a dense conductive nozzle structure, ensuring the conductive performance and mechanical strength of the conductive nozzle.

[0020] The method also includes: the heating time in step 1 is 2 hours. The 2-hour time ensures that the alloy powder can fully undergo physical and chemical changes at high temperature to form a stable organizational structure, which helps to reduce residual stress and defects in the conductive nozzle and improve the overall performance and service life of the conductive nozzle.

[0021] In summary, the beneficial effects of the utility model are: the conductivity of the improved alloy is as high as 84.7% IACS, which can avoid welding wire adhesion caused by poor arc initiation. The hardness reaches 147HV0.1. The conductive nozzle prepared by the alloy is very wear-resistant during the welding process, reduces aperture wear, and avoids welding track deviation caused by severe wear of the conductive nozzle during welding. The copper alloy conductive nozzle is suitable for common gas shielded welding, MIG welding and other environments, which can improve the qualified rate of welding joints, ensure welding quality, improve welding efficiency, and save production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0024] In the figure: joint 1, welding wire channel 2, cylindrical section 3, conical section 4, welding wire 5, conductive tip body 6, expansion section 7, contraction section 8, boss 9. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0030] A highly wear-resistant conductive tip and a manufacturing method thereof, comprising a conductive tip body 6, a joint 1 being provided at the rear end of the conductive tip body 6, a cone section 4 being provided at the front end of the conductive tip body 6, a cylindrical section 3 being provided between the joint 1 and the cone section 4, a welding wire channel 2 being provided in the conductive tip body 6 for a welding wire 5 to pass through, and the welding wire channel 2 extending along the length direction of the conductive tip body 6. Figure 1 , a joint 1 is arranged at the rear end, a cone section 4 is arranged at the front end, and a cylindrical section 3 is arranged between the joint 1 and the cone section 4. This design ensures the stability and durability of the conductive tip. The design of the joint 1 is convenient for connecting with external equipment, and the cone section 4 helps to smoothly lead out the welding wire 5. The welding wire channel 2 extends along the length direction of the conductive tip body 6, ensuring that the welding wire 5 can remain stable and not easily deviate when passing through the conductive tip, thereby improving the welding quality.

[0031] Regarding the improvement of the material of the conductive tip, the conductive tip body 6 is made of a copper alloy, and its material composition is Cu-0.2wt%Al-0.1wt%Ti. The improvement of the conductive tip material improves the conductive performance of the conductive tip, and at the same time enhances its mechanical strength and wear resistance. The addition of aluminum and titanium makes the copper alloy have better oxidation resistance and corrosion resistance, thereby extending the service life of the conductive tip.

[0032] See attached Figure 1 Regarding the specific structure of the welding wire channel 2, the welding wire channel 2 includes an expansion section 7 and a contraction section 8, and the diameter of the expansion section 7 is larger than the diameter of the contraction section 8. The expansion section 7 provides sufficient space for the welding wire 5, and the contraction section 8 ensures that the welding wire 5 can fit closely to the channel wall when passing through, ensuring the effective transmission of current, and helping the welding wire 5 to smoothly transition when entering the conductive nozzle, reducing the possibility of wire jamming. In order to avoid deformation or breakage of the welding wire 5, the cross-section of the welding wire channel 2 is circular, and the welding wire channel 2 runs through the conductive nozzle body 6. The welding wire 5 can be evenly stressed in the channel, reducing the deformation or breakage of the welding wire 5 caused by uneven stress. The welding wire channel 2 runs through the conductive nozzle body 6, ensuring that the welding wire 5 can maintain stable conductivity throughout the entire length of the conductive nozzle, thereby improving the stability and efficiency of welding.

[0033] See attached Figure 2 In order to improve the stability of the installation of the conductive nozzle, a boss 9 is provided at the rear of the cylindrical section 3, and the boss 9 expands outward along the radial direction of the cylindrical section 3. The contact area between the conductive nozzle and the welding equipment is increased, and the stability and reliability of the connection are improved. The boss 9 expands outward along the radial direction of the cylindrical section 3, making the installation and disassembly process more convenient. The diameter of the connector 1 is smaller than the diameter of the cylindrical section 3. The conductive nozzle can be made more compact when connected to the welding equipment, reducing the space occupied. The outer wall of the connector 1 is provided with an external thread for matching the welding equipment. The conductive nozzle can be firmly connected to the welding equipment and is not easy to loosen or fall off. At the same time, the design of the external thread also meets industry standards, which is convenient for compatibility and interchangeability with other equipment.

[0034] A method for manufacturing a highly wear-resistant conductive nozzle comprises the following steps:

[0035] Step 1) heating Cu-0.2wt%Al-0.1wt%Ti alloy powder under vacuum conditions;

[0036] Step 2) crushing the alloy powder and placing it in a conductive nozzle mold;

[0037] Step 3) The alloy powder is consolidated by hot isostatic pressing.

[0038] Heating under vacuum conditions can remove gases and impurities in the alloy powder and reduce the possibility of oxidation, thereby ensuring the high purity and excellent performance of the final conductive nozzle. The selection of CU-0.2WT%AL-0.1WT%TI alloy powder ensures the high conductivity, high mechanical strength and excellent corrosion resistance of the conductive nozzle; the hot isostatic pressing consolidation process can tightly combine the alloy powder particles under high temperature and high pressure to form a conductive nozzle with excellent mechanical properties and conductive properties. Compared with traditional casting or processing methods, a conductive nozzle with uniform structure and stable performance can be produced, and material waste and processing costs can be reduced.

[0039] The method also includes: in step 1, the heating temperature is 950°C. The heating temperature of 950°C is determined based on the physical and chemical properties of the alloy powder, which can make the alloy powder have sufficient fluidity but will not cause excessive oxidation or burning due to excessive temperature. The metal elements in the alloy powder can fully diffuse and combine to form a dense conductive nozzle structure, ensuring the conductive performance and mechanical strength of the conductive nozzle.

[0040] The method also includes: the heating time in step 1 is 2 hours. The 2-hour time ensures that the alloy powder can fully undergo physical and chemical changes at high temperature to form a stable organizational structure, which helps to reduce residual stress and defects in the conductive nozzle and improve the overall performance and service life of the conductive nozzle.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A highly wear-resistant conductive tip, comprising a conductive tip body (6), wherein a connector (1) is provided at the rear end of the conductive tip body (6), characterized in that: A cone section (4) is provided at the front end of the conductive nozzle body (6), a cylindrical section (3) is provided between the joint (1) and the cone section (4), and a welding wire channel (2) for a welding wire (5) to pass through is provided in the conductive nozzle body (6), the welding wire channel (2) extending along the length direction of the conductive nozzle body (6).

2. A highly wear-resistant conductive tip according to claim 1, characterized in that: The welding wire channel (2) comprises an expansion section (7) and a contraction section (8), and the diameter of the expansion section (7) is greater than the diameter of the contraction section (8).

3. A highly wear-resistant conductive tip as claimed in claim 2, characterized in that: The welding wire channel (2) has a circular cross-section, and the welding wire channel (2) passes through the conductive nozzle body (6).

4. A highly wear-resistant conductive tip according to claim 1, characterized in that: A boss (9) is provided at the rear of the cylindrical section (3), and the boss (9) expands outwards along the radial direction of the cylindrical section (3).

5. A highly wear-resistant conductive tip according to claim 1, characterized in that: The diameter of the joint (1) is smaller than the diameter of the cylindrical section (3).

6. A highly wear-resistant conductive tip according to claim 1, characterized in that: The outer wall of the joint (1) is provided with an external thread for matching with welding equipment.

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