Study on the magnetic permeability in support system
component welding of HL-2M tokamak

doi:10.16568/j.0254-6086.202203003

Nuclear Fusion and Plasma Physics ›› 2022, Vol. 42 ›› Issue (3): 285-289.DOI: 10.16568/j.0254-6086.202203003

• Nuclear Fusion Engineering • Previous Articles Next Articles

Study on the magnetic permeability in support system component welding of HL-2M tokamak

QIAO Tao¹, LIU De-quan¹, LIN Tao¹, ZHENG Xiao-zhou², XU Wen-feng³

(1. Southwestern Institute of Physics, Chengdu 610041;2. Wuhan Heavy Duty Machine Tool Group, Wuhan 430000;3. WISDRI (Wuhan) Thermal Engineering Co., Ltd, Wuhan 430223)

Received:2020-08-17 Revised:2021-11-19 Online:2022-09-15 Published:2022-09-20

HL-2M支撑部件焊接中的磁导率控制工艺研究

乔涛¹，刘德权¹，林涛¹，郑小舟²，许文峰³

(1. 核工业西南物理研究院，成都 610041；2. 武汉重型机床集团有限公司，武汉 430000；3. 中冶南方(武汉)热工有限公司，武汉 430223)

作者简介:乔涛(1976-)，男，四川南充人，工程师，从事托卡马克装置工程设计研究。
基金资助:
国家自然科学基金(11375053)；国家磁约束核聚变能发展研究专项(2013GB107001)；国家国际科技合作专项(2015DFA61760)

Abstract

Abstract:

The support system of HL-2M tokamak is composed of more than 500 non-standard components with different sizes and shapes. More than 400 of these components are welded parts, which are made of SS304 plates. According to the design and operation requirements of HL-2M, the support system must meet the magnetic permeability μ≤1.03, especially the parts prepared by welding process should also fully meet the requirement. Based on repeated welding test comparison and process evaluation, the magnetic permeability can be controlled by increasing the nickel content in the welding wire and adding proper amount of nitrogen into the protective gas (argon).

Key words: HL-2M tokamak, Support components, Welding, Magnetic permeability, Welding protective gas

摘要：

HL-2M装置的支撑结构由500多件尺寸不一形状各异的非标部件构成。其中400余件以上为焊接部件，均由SS304板材焊接而成。根据HL-2M装置的设计与运行要求，支撑结构部件所用钢材必须满足磁导率μ≤1.03，也需保证其焊接而成的部件在焊接后的磁导率也不能大于1.03。通过多组焊接试验的对比，采用高镍焊丝GMS-310+Ar+N₂混合气体，能很好地将焊后的磁导率控制在规定范围之内，并成功地应用在支撑部件的焊接中。

关键词: HL-2M装置, 支撑部件, 焊接, 磁导率, 焊接保护气体

CLC Number:

TL62⁺6

QIAO Tao, LIU De-quan, LIN Tao, ZHENG Xiao-zhou, XU Wen-feng. Study on the magnetic permeability in support system component welding of HL-2M tokamak[J]. Nuclear Fusion and Plasma Physics, 2022, 42(3): 285-289.

乔涛, 刘德权, 林涛, 郑小舟, 许文峰. HL-2M支撑部件焊接中的磁导率控制工艺研究[J]. 核聚变与等离子体物理, 2022, 42(3): 285-289.

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Study on the magnetic permeability in support system component welding of HL-2M tokamak

HL-2M支撑部件焊接中的磁导率控制工艺研究

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