高压电器2024，Vol.60Issue(7)：148-154,7.DOI:10.13296/j.1001-1609.hva.2024.07.016
电气设备GIS和GIL用不同材质波纹管性能研究
Research on Performance of Different Bellows Materials for GIS/GIL
摘要
Abstract
Bellows is an important structure of GIS and GIL and,due to complicated service environment,requires stable microstructure performance,good formability,small temperature rise in service and meets excellent corrosion resistance of different regions.In this paper,304 stainless steel,304L stainless steel,321 stainless steel,316L stain-less steel and Incoloy 825 are selected as the research objects to test their performance as candidate materials for bel-lows.The microstructure at specific strain levels is observed by optical microscope(OM)and X-ray diffraction(XRD).It is found that the transformation induced plasticity(TRIP)effect occurs and α′martensite is observed in 304,304L and 321stainless steel.No phase transformation in 316L stainless steel and 825 alloy are found.The hard-ness increase magnitude in 304,304L and 321 stainless steel are bigger than that in 316L and 825 alloy during the hardness test.The magnetic variation of the material is studied by static magnetic measurement.It is found that both Br and Hc increase in varying degrees after deformation,showing that all candidate materials produce different de-grees of magnetism.The corrosion resistance of different materials is studied by electrochemical test,which shows that the five test materials have good corrosion resistance in heavy polluted atmospheric environment above C4,with 316L stainless steel in particular.Therefore,316L stainless steel is recommended in the case of large deformation and harsh corrosive environment and 304 stainless steel is recommended in the case of small deformation and slight corrosion.关键词
GIS/GIL设备/波纹管/奥氏体不锈钢/选材Key words
GIS/GIL/bellows/Austenitic stainless steel/material selection引用本文复制引用
乔亚霞,金焱,张浩,孙绍恒,李洪伟,谢亿,罗宏建..电气设备GIS和GIL用不同材质波纹管性能研究[J].高压电器,2024,60(7):148-154,7.基金项目
国家电网有限公司科技项目(SGZJ0000KXJS1800302). Project Supported by Science and Technology Project of SGCC(SGZJ0000KXJS1800302). （SGZJ0000KXJS1800302）
