Vacuum brazing electrode for fine hafnium wire

Abstract

The utility model relates to the technical field of cutting gun electrode hafnium wire assembly, in particular to a small hafnium wire vacuum brazing electrode. Comprising a pressing needle, a hafnium wire, welding flux and a copper body. A vertical hafnium wire hole is formed in the top end of the copper body, the welding flux is arranged at the bottom of the hafnium wire hole, the hafnium wire is arranged in the hafnium wire hole and above the welding flux, and a gap is reserved between the hafnium wire and the hafnium wire hole; according to the structure that the pressing needle is placed into the copper body from the upper portion of the hafnium wire and presses the hafnium wire up and down in the vertical direction, the small hafnium wire can reach the bottom of a hole in the brazing process, the problem that the electric conductivity is reduced due to gaps is solved, the brazing process is simplified, the production efficiency is improved, and meanwhile the welding quality and the stability of an electrode are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cutting gun electrode hafnium wire assembly especially relates to a kind of small hafnium wire vacuum brazing electrode. BACKGROUND

[0002] Plasma electrode is an electrode structure used to generate and control plasma. Its working principle is to make gas molecules ionize by applying high voltage and high frequency alternating current field, forming plasma. Plasma electrode is usually composed of one or more metal electrodes, and when high voltage is applied, strong electric field is generated on the electrode, exciting gas molecules.

[0003] Cutting gun electrode is a key component in plasma cutting machine, its main function is to generate high temperature and high energy plasma through arc discharge, so as to realize the cutting of material. Hafnium wire in plasma electrode is an important material, mainly used in electrode of plasma cutting machine. Zirconium hafnium wire material has been widely studied and discussed in terms of processing level and application status. The role of hafnium wire in plasma physics, chemistry and engineering is mainly reflected in its ability to effectively control and optimize the generation and characteristics of plasma.

[0004] There are two common ways to assemble hafnium wire: 1. Press fit; 2. Brazing. Because there is a gap between hafnium wire and copper body after hafnium wire is pressed into copper body, resulting in poor conductivity, and press fit relies on hafnium wire to be thickened and fixed in hafnium wire hole, resulting in unstable electrode quality due to different deformation. Therefore, in order to get better quality electrode, we often use brazing method to improve quality. Brazing refers to placing filler metal in hafnium wire hole, and melting the filler metal to fill the gap between hafnium wire and copper body through high temperature, while hafnium wire will not deform due to press fit, ensuring the quality and consistency of the electrode.

[0005] Because 1mm hafnium wire will bend or not reach the bottom of hafnium wire hole during brazing, electrodes below 1mm in the market use press fit process. INVENTION CONTENTS

[0006] The utility model aims at the defects in the prior art to provide a kind of small hafnium wire vacuum brazing electrode, so that small hafnium wire can reach the bottom of hole during brazing, avoid the problem of conductivity decline caused by gap, simplify the brazing process, improve production efficiency, and ensure the welding quality and stability of electrode.

[0007] In order to achieve the above object, the utility model adopts the technical scheme: a kind of fine hafnium wire vacuum brazing electrode, including needle, hafnium wire, solder, copper body;The copper body top end is provided with vertical hafnium wire hole, the solder is set in the bottom of the hafnium wire hole, the hafnium wire is set in the solder top of the hafnium wire hole, and gap is left between the hafnium wire and the hafnium wire hole;The needle is placed in the copper body from the hafnium wire top and presses the hafnium wire in vertical direction.

[0008] Further, the copper body top end is provided with needle placement position, and the needle is placed in the needle placement position from the hafnium wire top.

[0009] Further, the copper body around the needle placement position part is set as cut-off part.

[0010] Further, welding base is also provided, and the copper body is arranged above the welding base.

[0011] Further, the welding base is set as inverted T type structure.

[0012] Further, a plurality of copper bodies are arranged on the welding base.

[0013] Further, one end of the hafnium wire chamfer is arranged above the solder in the hafnium wire hole.

[0014] By including needle, hafnium wire, solder, copper body;The copper body top end is provided with vertical hafnium wire hole, the solder is set in the bottom of the hafnium wire hole, the hafnium wire is set in the solder top of the hafnium wire hole, and gap is left between the hafnium wire and the hafnium wire hole;The needle is placed in the copper body from the hafnium wire top and presses the hafnium wire in vertical direction, the structure reaches that fine hafnium wire can reach hole bottom when brazing, avoids the problem of conductivity reduction caused by gap, simplifies brazing process, improves production efficiency, and ensures welding quality and electrode stability. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed to be used in the following embodiment or prior art description will be simply introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for ordinary skilled in the art.

[0016] Figure 1 It is the structure schematic view of the fine hafnium wire vacuum brazing electrode of the utility model;

[0017] Figure 2The utility model discloses a fine hafnium wire vacuum brazing electrode's press needle schematic diagram.

[0018] Figure 3 The utility model discloses a fine hafnium wire vacuum brazing electrode's hafnium wire schematic diagram.

[0019] Figure 4 The utility model discloses a fine hafnium wire vacuum brazing electrode's solder schematic diagram.

[0020] Figure 5 The utility model discloses a fine hafnium wire vacuum brazing electrode's copper body schematic diagram.

[0021] Figure 6 The utility model discloses a fine hafnium wire vacuum brazing electrode's copper body sectional view.

[0022] Reference signs:

[0023] Press needle 1, hafnium wire 2, solder 3, copper body 4, welding base 5. Specific implementation mode

[0024] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0025] In the description of the utility model, it needs to be explained that the orientation or position relation of "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indication is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, construct and operate, therefore, it can not be understood as the limitation of the utility model.

[0026] A fine hafnium wire vacuum brazing electrode, as shown in the drawing, comprises a press needle 1, a hafnium wire 2, a solder 3 and a copper body 4. Figure 1 The copper body 4 is provided with a vertical hafnium wire hole at the top end, the solder 3 is arranged at the bottom of the hafnium wire hole, the hafnium wire 2 is arranged above the solder 3 in the hafnium wire hole, and a gap is left between the hafnium wire 2 and the hafnium wire hole; the press needle 1 is put into the copper body 4 from above the hafnium wire 2 and presses the hafnium wire 2 up and down in the vertical direction.

[0027] Specifically, the hafnium wire 2 is stably positioned before brazing by the pressing needle 1, and after the solder 3 is melted, the hafnium wire 2 is pressed to the bottom of the hafnium wire hole of the copper body 4 by its own gravity, solving the problem that the hafnium wire below 1mm does not reach the hole bottom during brazing, significantly improving the combination quality of the hafnium wire 2 and the copper body 4 and the overall performance of the electrode, ensuring the close contact between the hafnium wire 2 and the copper body 4, avoiding the problem of conductivity reduction caused by gaps, ensuring the stability and reliability of the electrode in the plasma cutting process, combining the gravity pressing action of the pressing needle 1 and the melting filling of the solder 3 through the brazing process, simplifying the brazing process, improving the production efficiency, and ensuring the welding quality and stability of the electrode.

[0028] As a preferred embodiment of the above, as shown in Figure 1 The top end of the copper body 4 is provided with a pressing needle placement position, and the pressing needle 1 is placed in the pressing needle placement position from above the hafnium wire 2.

[0029] Specifically, by providing a pressing needle placement position at the top end of the copper body 4, a precise placement position is provided for the pressing needle 1, ensuring the stability and position accuracy of the pressing needle 1 during brazing, avoiding welding quality problems caused by improper position of the pressing needle, and the pressing needle 1 can be directly placed in the pressing needle placement position from above the hafnium wire 2, without the need for additional fixing or adjusting steps, simplifying the operation process, improving the production efficiency, and reducing the operation difficulty and labor cost. The design of the pressing needle placement position not only provides support for the pressing needle, but also protects the pressing needle and hafnium wire to a certain extent from external interference, avoiding damage or deformation caused by improper position of the pressing needle or hafnium wire during brazing, improving the yield and quality of the electrode, and improving the consistency and reliability of the electrode.

[0030] As a preferred embodiment of the above, as shown in Figure 1 The copper body 4 is provided with a cut-off portion around the pressing needle placement position.

[0031] Specifically, the cut-off portion will be cut off after welding, providing more sufficient welding space for the pressing needle 1 and the hafnium wire 2, avoiding welding quality problems caused by insufficient space, ensuring that the solder 3 can be fully melted and filled into the gap between the hafnium wire 2 and the copper body 4 to form a firm welding joint, improving the overall strength and stability of the electrode, so that the solder 3 can flow to the area to be welded more quickly after melting, reducing the welding time, improving the production efficiency, and reducing the production cost. At the same time, it also helps to reduce the problem of material deformation or damage caused by long-time high-temperature heating, so that the overall structure of the electrode is more reasonable, and the connection between the various components is more tight. Combined with the pressing needle placement position and the pressing of the hafnium wire 2 by the pressing needle 1, the problem of the hafnium wire below 1mm not reaching the hole bottom during brazing is further efficiently solved.

[0032] As a preferred embodiment of the above, as shown in Figure 1 The copper body 4 is arranged above the solder base 5.

[0033] As a preferred embodiment of the above, as shown in Figure 1 The solder base 5 is arranged in an inverted T-shaped structure.

[0034] As a preferred embodiment of the above, as shown in Figure 1 The copper bodies 4 are arranged on the solder base 5.

[0035] Specifically, the inverted T-shaped structure provides more stable support for the copper body 4, increases the stability during the welding process, and arranging multiple copper bodies 4 on the solder base 5 can realize batch production and processing of the electrode, making it easier to realize automatic production and assembly line operation of the electrode, improve production efficiency, reduce production cost, and also help to ensure the consistency and reliability of each electrode.

[0036] As a preferred embodiment of the above, as shown in Figure 1 The chamfered end of the hafnium wire 2 is arranged above the solder 3 in the hafnium wire hole.

[0037] Specifically, the chamfered design of the hafnium wire 2 increases its contact area with the solder 3 and the copper body 4, which helps the solder 3 to better wet and fill the gap between the hafnium wire 2 and the copper body 4 after melting, forming a more secure welding joint, improving the welding quality, increasing the welding contact area, and promoting the melting of the solder, thus the strength of the welding joint is also enhanced, making it easier for the hafnium wire 2 to align with the hafnium wire hole when placed, and the placement of the solder 3 is also more convenient.

[0038] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fine hafnium wire vacuum brazed electrode characterized by: Including needle (1), hafnium wire (2), solder (3), copper body (4); The copper body (4) top is provided with vertical hafnium wire hole, the solder (3) is set in the bottom of the hafnium wire hole, the hafnium wire (2) is set in the solder (3) above in the hafnium wire hole, the hafnium wire (2) and the hafnium wire hole are left gap;The needle (1) is placed in the copper body (4) by the hafnium wire (2) above, and the hafnium wire (2) is pressed in the vertical direction.

2. The fine hafnium wire vacuum brazing electrode according to claim 1, characterized by The copper body (4) top is provided with needle placement position, and the needle (1) is placed in the needle placement position by the hafnium wire (2) above.

3. The fine hafnium wire vacuum brazing electrode according to claim 2, characterized by The copper body (4) is set as cut-off part around the needle placement position part.

4. The fine hafnium wire vacuum brazing electrode according to claim 1, wherein It is also provided with welding base (5), and the copper body (4) is arranged above the welding base (5).

5. The fine hafnium wire vacuum brazing electrode according to claim 4, characterized by The welding base (5) is set as inverted T type structure.

6. The fine hafnium wire vacuum brazing electrode according to claim 4, wherein Several copper bodies (4) are arranged on the welding base (5).

7. The fine hafnium wire vacuum brazing electrode according to claim 1, wherein The chamfered end of the hafnium wire (2) is set in the hafnium wire hole above the solder (3).

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