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

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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.

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Acknowledgements

The research presented in this paper is partially funded by the Stainless steel tube branch company, Taiyuan Iron & Steel (Group) CO. LTD. The 304L stainless billet and extrusion productive experiment condition are provided by them. The authors also thank laboratory engineer **ao-Wen Zhang for his assistance in conducting the tensile tests and metallographic test at the Technology Center Laboratory, Taiyuan Iron & Steel (Group) CO. LTD.

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Authors and Affiliations

  1. State Key Laboratory for Mechanical Behavior of Materials, **’an Jiaotong University, **’an, 710049, China

    Lei-Feng Tuo, Gen-Shu Zhou & Zhi-Qiang Yu

  2. Stainless Steel Tube Branch Company, Taiyuan Iron & Steel (Group) CO. LTD, Taiyuan, 030003, China

    Lei-Feng Tuo, **-Tang Kang & Bo-Wen Wang

Authors
  1. Lei-Feng Tuo
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  2. Gen-Shu Zhou
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  5. Bo-Wen Wang
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Corresponding author

Correspondence to Gen-Shu Zhou.

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This work was supported by the State Key Laboratory for Mechanical Behavior of Materials (No. 20171909).

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Tuo, LF., Zhou, GS., Yu, ZQ. et al. Extrusion process of 304L H-shaped stainless steel used in passive residual heat removal heat exchanger. NUCL SCI TECH 30, 61 (2019). https://doi.org/10.1007/s41365-019-0591-5

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  • DOI: https://doi.org/10.1007/s41365-019-0591-5

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