BU Fanyu, LIU Yufei, LIU Yuting, et al.Super Duplex Stainess Steel S32750 Heads For PV Hot Forming[J].Electric Welding Machine, 2024, 54(3): 118-127. DOI: 10.7512/j.issn.1001-2303.2024.03.18.
Super Duplex Stainess Steel S32750 Heads For PV Hot Forming
This paper systematically discusses the forming process of S32750 super duplex stainless steel pressure vessel heads. Through the analysis of the chemical composition
microstructure
mechanical properties
and corrosion resistance of S32750 super duplex stainless steel
it is determined that the material has high strength
good weldability
and corrosion resistance. Based on the material properties and relevant standards
a two-step forming process is formulated
including cold stamping pre-forming and hot stamping final forming. Key control points of the forming process include raw material inspection
marking and blanking
edge preparation
cold and hot stamping forming
and heat treatment for recovery of material properties. After forming
the shape and size
thickness
hardness
and ferrite content of the head are inspected to verify the effectiveness of the forming process. Tensile
impact
and intergranular corrosion tests on the head blank material show that the mechanical properties and corrosion resistance of the head have been well restored. The effectiveness of the S32750 super duplex stainless steel head forming process is summarized
providing experience for the manufacture of duplex stainless steel pressure vessels.
关键词
超级双相不锈钢压力容器封头热成形恢复性能热处理力学性能耐腐蚀性能
Keywords
S32750 super duplex stainless steelpressure vessel headhot formingsolution treatment for recoverymechanical propertiescorrosion resistance
references
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