碳化硅材料在机械密封中的应用  

Application of silicon carbide in mechanical seals

作　　者：于新奇[1] 任欧旭[1] 鲁占全 

机构地区：[1]河北科技大学机械电子工程学院,河北石家庄050054 [2]河北省成套招标有限公司,河北石家庄050051

出　　处：《河北工业科技》2005年第3期134-137,共4页Hebei Journal of Industrial Science and Technology

摘　　要：针对密封环材料的性能直接影响机械密封的使用性能和寿命,讨论了机械密封对密封副材料的各种性能要求,介绍了机械密封常用碳化硅材料的种类和特点。通过与碳化钨对比,指出碳化硅具有密度低、耐腐蚀性能和热力性能好,与碳石墨配对以及自身配对时摩擦系数低、硬度极高等优良性能,由此分析可知碳化硅密封环可应用于高温、高压、高转速、腐蚀性介质和含有固体颗粒介质等工况下的机械密封中。结果表明,碳化硅是作为机械密封硬环最理想的材料。Material property of seal ring has direct effect on operating performance and life-time of mechanical seals. The re- quired property of sealing material used in mechanical seals is discussed in this paper. Catalog, feature and property of silicon carbide used in mechanical seals are introduced.It is analyzed that silicon carbide seal ring can be used in mechanical seals in va- rious operating conditions such as high temperature,high pressure,corrosive medium and the medium with solid particles.The results show that silicon carbide is the perfect material for the hard rings of mechanical seals.

关 键 词：机械密封 碳化硅材料 应用 耐腐蚀性能 腐蚀性介质 使用性能 直接影响 性能要求 热力性能 摩擦系数 颗粒介质 密封环 密封副 碳化钨 碳石墨 高转速 配对 

分 类 号：TH136[机械工程—机械制造及自动化] TN304.24[电子电信—物理电子学]