Sealing performance of flexible graphite corrugated metal composite gaskets

LI Xinggen; SHEN Mingxue; WANG Chenglin; WEI Shijun; LI Jie; PENG Xudong

doi:10.11949/j.issn.0438-1157.20141172

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Sealing performance of flexible graphite corrugated metal composite gaskets

更新时间：2025-12-10

- Sealing performance of flexible graphite corrugated metal composite gaskets
- CIESC Journal Issue 4, Pages: 1417-1424(2015)
- 作者机构：
  
  1. 浙江工业大学过程装备及其再制造教育部工程研究中心,浙江,杭州,310032
  2. 宁波天生密封件有限公司,浙江,宁波,315302
  3. 中核核电运行管理有限公司一厂, 浙江海盐,314300
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141172
  CLC： B42
- Online First：05 April 2015，
  
  Published：05 April 2015
- 稿件说明：
移动端阅览
LI Xinggen, SHEN Mingxue, WANG Chenglin, et al. Sealing performance of flexible graphite corrugated metal composite gaskets[J]. CIESC Journal, 2015, (4): 1417-1424.
DOI：

LI Xinggen, SHEN Mingxue, WANG Chenglin, et al. Sealing performance of flexible graphite corrugated metal composite gaskets[J]. CIESC Journal, 2015, (4): 1417-1424. DOI： 10.11949/j.issn.0438-1157.20141172.

摘要

在全自动垫片综合性能试验台上分别进行了316L和A3钢作为骨架材料的金属波纹复合垫片的泄漏率、压缩回弹性能和应力松弛试验

考察了柔性石墨覆盖层厚度、骨架材质和垫片应力对垫片密封性能和力学性能的影响

分析了不同覆盖层厚度和垫片应力下的金属波纹残余高度。结果表明:覆盖层厚度对垫片的密封性能有重要影响

厚度为0.6 mm时该类垫片的综合性能最佳;金属波纹复合垫片具有良好的承载能力和密封性能

尤其适宜压力波动、温度剧变等场合的密封

预压缩处理更能真实反映出复合垫片优异的回弹性能;此外

与A3钢作为骨架材料的复合垫片相比

316L复合垫片的密封性能和压缩回弹性能随垫片应力的增加逐渐显现

且其抗松弛能力和抗蠕变性能也得到了显著提高。

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.

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