锅炉燃烧器喷咀用含N、Nb、RE耐热钢的研究  

Study of Heat Resistant Steels Containing N, Nb and RE for the Coal Powder Spraying Nozzles of Boilers

作　　者：赵四勇[1] 周克崧[1] 叶英宁 陈和兴[1] 周庆红[1] 

机构地区：[1]广州有色金属研究院耐磨材料研究开发中心

出　　处：《机械工程材料》1999年第4期40-42,45,共4页Materials For Mechanical Engineering

摘　　要：研究了含氮、铌和稀土的Ｆｅ－Ｃｒ－Ｎｉ耐热钢的力学性能和高温特性。结果表明，０．１４％Ｎ、０．０８％ＲＥ、０．１５％Ｎｂ、２３％＿３０％Ｃｒ和１１％＿１６％Ｎｉ材料经１１００℃水淬，１０００℃时效热处理，在本试验条件下，具有最佳的综合性能；该材料１０００℃时的抗氧化性与４０Ｃｒ２５Ｎｉ２０相当，优于３５Ｃｒ１８Ｎｉ２５Ｓｉ２等常用耐热钢。用它制造的火电厂锅炉燃烧器喷咀，寿命为ＺＧ３０Ｃｒ２２Ｎｉ４Ｍｎ７Ｓｉ２ＲＥ钢的３．５倍。Abstract The mechanical properties and high temperature characteristics of Fe Cr Ni heat resistant steels containing nitrogen, niobium and rare earth element are studied. The results show that the comprehensive properties of the material containing 0.14%N, 0.08%RE, 0.15%Nb, 23%_30%Cr, 11%_16%Ni and heat treated by 1100℃ water quenching and 1000℃ ageing are the best of all steels developed in the present paper. The oxidation resistance of the above mentioned material at 1000℃ is similar to 40Cr25Ni20 and higher than that oftraditional heat resistant steels such as 35Cr18Ni25Si2 steel ect. The service life of the coal powder spraying nozzles (made of the test material) of boilers at power station is 3.5 times as high as that of 30Cr22Ni4Mn7Si2RE steel.

关 键 词：耐热钢 铬镍钢 锅炉 燃烧器 喷嘴 火电厂 

分 类 号：TM621.2[电气工程—电力系统及自动化] TG142.73[一般工业技术—材料科学与工程]