Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (4): 61 doi: 10.1007/s41365-019-0591-5

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Extrusion process of 304L H-shaped stainless steel used in passive residual heat removal heat exchanger

Lei-Feng Tuo1,2 • Gen-Shu Zhou1 • Zhi-Qiang Yu1 • Xi-Tang Kang2 • Bo-Wen Wang2   

  1. 1 State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
    2 Stainless Steel Tube Branch Company, Taiyuan Iron & Steel (Group) CO. LTD, Taiyuan 030003, China
  • Received:2018-07-11 Revised:2018-10-02 Accepted:2018-10-20
  • Contact: Gen-Shu Zhou E-mail:zhougenshuxjtu@163.com
  • Supported by:
    This work was supported by the State Key Laboratory for Mechanical Behavior of Materials (No. 20171909).
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Lei-Feng Tuo, Gen-Shu Zhou, Zhi-Qiang Yu, Xi-Tang Kang, Bo-Wen Wang. Extrusion process of 304L H-shaped stainless steel used in passive residual heat removal heat exchanger.Nuclear Science and Techniques, 2019, 30(4): 61     doi: 10.1007/s41365-019-0591-5
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Abstract: 304L H-shaped stainless steel is used as the support frame of the passive residual heat removal heat exchanger (PRHR HX) in a nuclear fission reactor. The extrusion process is adopted to manufacture the 304L H-shaped stainless steel. Finite element method simulation is herein used to analyze metal flow characteristics, optimize the extrusion die, and predict the extrusion force at different temperatures and speeds. A Φ400-mm container and Φ388-mm forging billet are selected, and the 304L H-shaped stainless steel is successfully manufactured using a Germany SMS 60 MN horizontal extruder. The mechanical properties and microstructure of the manufactured 304L H-shaped stainless steel meet the requirements of the PRHR HX, and the surfaces of the product pass the dye penetration test. The H-shaped stainless steels are used in Haiyang nuclear power plant in Shandong Province.

Key words: PRHR HX, Support frame, Extrusion process, 304L, H-shaped stainless steel