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Hollow oxygen-free copper bar vacuum electron beam welding method, current lead and nuclear fusion device

A technology of vacuum electron beam welding and oxygen-free copper rods, which is applied in the direction of electron beam welding equipment, welding equipment, welding/welding/cutting items, etc., which can solve the problem of poor sealing of welded joints, difficulty in meeting design requirements, and poor weld surface shape and other problems, to achieve the effect of good sealing of welded joints, long service life and stable performance

Active Publication Date: 2019-09-13
淮南新能源研究中心
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Problems solved by technology

However, if the above-mentioned thick-walled hollow oxygen-free copper rod is welded directly by the ordinary vacuum electron beam welding method, there will be defects such as poor weld surface formation, severe spatter, and serious arc craters, resulting in poor sealing of the welded joints and poor resistance to corrosion. Low tensile strength, difficult to meet design requirements

Method used

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  • Hollow oxygen-free copper bar vacuum electron beam welding method, current lead and nuclear fusion device
  • Hollow oxygen-free copper bar vacuum electron beam welding method, current lead and nuclear fusion device
  • Hollow oxygen-free copper bar vacuum electron beam welding method, current lead and nuclear fusion device

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Embodiment Construction

[0024] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0025] This embodiment takes two C10200 hollow oxygen-free copper rods with an outer diameter of φ105mm, an inner hole diameter of φ16mm, and a copper rod length of 80mm as an example, which are hereinafter referred to as the first hollow oxygen-free copper rod 1 and the second hollow oxygen-free copper rod 2 ( Such as figure 1 shown).

[0026] A vacuum electron beam welding method for a hollow oxygen-free copper rod provided by the invention comprises the following steps:

[0027] (1) Use fine sandpaper dipped in alcohol to polish the first and second hollow oxygen-free copper rods to be welded and the metal surface within 40mm of the surroundi...

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Abstract

The invention discloses a hollow oxygen-free copper bar vacuum electron beam welding method, a current lead and a nuclear fusion device. The method comprises the steps of positioning welding, penetration fusion welding, modified welding and the like. The current lead comprises an integral hollow oxygen-free copper bar formed through the hollow oxygen-free copper bar vacuum electron beam welding method, and the current lead is adopted in the nuclear fusion device. According to the welding method, welding between hollow oxygen-free copper bars is stable, the welding line width is uniform, splashing is little, arc extinguishing is full, and the characteristics that a welding connector is good in sealing performance and high in tensile strength are achieved; and the current lead manufactured after welding and the nuclear fusion device applying the current lead have the advantages that the performance is stable and the service life is long, wherein the advantages are brought by the above effects.

Description

technical field [0001] The invention relates to the technical field of manufacturing technology of current leads in nuclear fusion devices, in particular to a vacuum electron beam welding method for hollow oxygen-free copper rods, current leads and nuclear fusion devices. Background technique [0002] The current leads in the nuclear fusion device are made of oxygen-free copper with excellent conductivity, and several thick-walled hollow oxygen-free copper rods need to be welded during manufacture. [0003] Due to the high thermal conductivity of oxygen-free copper, it is impossible to directly weld the hollow oxygen-free copper rod. Usually, it needs to be preheated to about 400°C and welded at high temperature. Not only is the labor intensity high, but also because oxygen-free copper in a liquid state has strong gas absorption and certain oxidation properties, cracks, pores and other defects are prone to appear during the welding process. [0004] Vacuum electron beam wel...

Claims

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Application Information

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IPC IPC(8): B23K15/06B23K15/00
CPCB23K15/0006B23K15/0033B23K15/06B23K2103/12
Inventor 刘振飞刘志宏马建国彭黎明沈旭邢银龙张冬洋
Owner 淮南新能源研究中心
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