化工学报Issue(4)：1417-1424,8.DOI:10.11949/j.issn.0438-1157.20141172
柔性石墨金属波纹复合增强垫片密封性能试验
Sealing performance of flexible graphite corrugated metal composite gaskets
摘要
Abstract
The leakage ratio, compression recovery and stress-relaxation of flexible graphite corrugated metal composite gaskets with 316L and A3 steel as framework were tested on an automatic multi-function gasket testing rig. The effects of flexible graphite cover layer thickness, frame material and gasket stress on sealing performance and mechanical properties were investigated. The residual thickness of corrugated metal was determined at different thicknesses of cover layer and gasket stresses. The sealing performance of the composite gasket was mainly dependent upon the thickness of cover layer with flexible graphite, and optimal sealing performance was observed for the corrugated metal when the thickness of cover layer was 0.6 mm. The composite gaskets had good carrying capacity and sealing performance, which was especially suitable for complex applications, such as pressure and temperature fluctuations. Also outstanding recovery of the composite gaskets could be obtained by pre-compression. In addition, as gasket stress increased, sealing and compression recovery performance of 316L composite gaskets became obviously better than the composite gaskets with A3 steel as framework, and the former had distinct improvement than the latter in resisting stress relaxation and creep behavior.关键词
复合增强垫片/柔性石墨/金属波纹/密封性能/整体器件/优化设计/实验验证Key words
composite gasket/flexible graphite/corrugated metal/sealing performance/monolith/optimal design/experimental validation分类
通用工业技术引用本文复制引用
励行根,沈明学,王成林,魏世军,励洁,彭旭东..柔性石墨金属波纹复合增强垫片密封性能试验[J].化工学报,2015,(4):1417-1424,8.基金项目
大型先进压水堆核电重大专项（ZB02K06）。@@@@ supported by the National Major Project of Large-scale Advanced Pressurized Water Reactor Nuclear Power Projects (ZB02K06) （ZB02K06）
