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Nuclear power plant unipolar magnetic control band electrode electroslag surfacing method and device

A technology for electroslag surfacing and nuclear power plants, applied in the field of unipolar magnetically controlled strip-polar electroslag surfacing welding methods and devices in nuclear power plants, which can solve the problems of affecting the accessibility of welding torches, collisions, and magnetic control modules affecting welding accessibility, etc.

Active Publication Date: 2016-02-10
中广核工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the magnetic control modules of the double magnetron strip electroslag surfacing device are respectively placed at the positions of the width direction of the welding strip (ie, the left and right sides of the width direction of the welding strip), which affects to a certain extent the welding torch when performing strip electroslag welding. Accessibility during slag surfacing, e.g. when welding a bead near a boss, a magnetic pole close to the boss may collide with the boss
[0005] That is to say, in the prior art, there is a technical problem that the magnetic control module of the double magnetron electroslag surfacing device affects its welding accessibility

Method used

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  • Nuclear power plant unipolar magnetic control band electrode electroslag surfacing method and device
  • Nuclear power plant unipolar magnetic control band electrode electroslag surfacing method and device
  • Nuclear power plant unipolar magnetic control band electrode electroslag surfacing method and device

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Embodiment 1

[0036] The embodiment of the present invention provides a method for unipolar magnetron electroslag surfacing welding with poles in a nuclear power plant, which is applied to a magnetron electroslag surfacing device for surfacing corrosion-resistant layers for large vessels in nuclear power plants. Please refer to figure 1, the strip-electroslag surfacing device includes: welding power supply 1, strip welding material 2, strip-feeding module 3, conductive tip 4, single magnetron module 5 and magnetron power supply 6; large container 7 is laid on the surface There are flux 8 and slag 9; such as figure 2 As shown, the strip electroslag surfacing method may further comprise the steps:

[0037] S1. Connect the positive electrode of the welding power source 1 with the contact tip 4, so that the strip welding material 2 connected to the contact tip 4 is charged, and the charged electrode is fed into the module 3 through the strip electrode The strip welding material 2 is sent to t...

Embodiment 2

[0048] Based on the same inventive concept, please refer to figure 1 , the embodiment of the present invention also provides a nuclear power plant unipolar magnetron strip electroslag surfacing device, including: fusion welding power supply 1, strip welding material 2, strip feeding module 3, conductive tip 4, magnetron module 5 and a magnetron power supply 6; the electroslag surfacing device with poles is used for overlaying the corrosion-resistant layer for the large container 7 of the nuclear power plant, and the surface of the large container 7 is covered with flux 8 and slag 9, wherein,

[0049] The strip feeding module 3 is connected to the strip welding material 2, and is used to send the strip welding material 2 to the surface of the large container 7 during the surfacing process;

[0050] The conductive tip 4 is arranged on the strip welding material 2, and is connected to the positive pole of the welding power source 1, and is used to charge the strip welding materia...

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Abstract

The invention discloses a nuclear power plant unipolar magnetic control band electrode electroslag surfacing method and device. The problem that a magnetic control module of an existing double magnetic control band electrode electroslag surfacing device affects the welding accessibility is solved. The nuclear power plant unipolar magnetic control band electrode electroslag surfacing device comprises a fusion welding power source, a band electrode welding material, a band electrode feeding module, a contact tube, a single magnetic control module and a magnetic control power source. The nuclear power plant unipolar magnetic control band electrode electroslag surfacing method comprises the steps that S1, the fusion welding power source is connected with the contact tube, so that the band electrode welding material is charged, and the band electrode feeding module conveys the charged band electrode welding material to the surface of a large container; S2, the fusion welding power source is connected with the large container, a current loop is formed when the charged band electrode welding material makes contact with the fusion welding power source, slag conducts electricity and generates resistance heat, and a molten bath is formed; and S3, the magnetic control power source supplies electricity to the single magnetic control module, and then undercut is prevented from being generated when the molten bath forms a weld bead. The installation position of the single magnetic control module can be adjusted, so that band electrode electroslag surfacing conducted on a boss accessory area of the large container is achieved.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant welding, in particular to a nuclear power plant single-pole magnetic control strip-electrode surfacing method and device. Background technique [0002] Electroslag surfacing is a method of surfacing by using the resistance heat generated by current passing through liquid slag. This surfacing process has the advantages of high deposition rate, faster surfacing speed, large thickness of one-time surfacing welding, and low dilution rate. , uniform penetration, less flux consumption and so on. [0003] Electroslag surfacing is very suitable for surfacing welding of large and medium-sized parts with simple shape and thick surfacing layer. In the process of electroslag surfacing, when the width of the strip is greater than or equal to 60mm, due to the magnetic shrinkage effect, the surfacing layer will produce undercut, forming welding defects. With the increase of the strip width, the sur...

Claims

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Application Information

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IPC IPC(8): B23K25/00
CPCB23K25/005
Inventor 吴义党张茂龙杨志鹏杨乘东刘鸣宇张斌张敏许杰何大波徐晓冬高俊根林继德朱建雄肖瑞旺朱从斌乔木
Owner 中广核工程有限公司
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