Cr9Mo炉管高温服役后性能测试及弯曲原因分析  

Mechanical Property Test and Bending Reason Analysis of Cr9Mo Furnace Tube at High Temperature

作　　者：叶童虓[1] 张玮[2] 南广利[1] 高增梁[2] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310032 [2]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

出　　处：《热加工工艺》2011年第6期19-21,共3页Hot Working Technology

基　　金：国家"863"高技术研究发展计划项目(2007AA04Z430)

摘　　要：通过宏观观察、硬度测试、金相分析、常温和高温拉伸试验、冲击试验和扫描电镜等方法,对高温服役后的Cr9Mo炉管进行性能测试,并分析弯曲原因。结果表明:炉管金相组织明显球化;常温下的伸长率,硬度和冲击性能有所下降,高温下的屈服强度和抗拉强度均比规范值低;热应力导致炉管弯曲。The mechanical property of Cr9Mo furnace tube was tested by macro-inspection, hardness testing, metatlographic observation, room temperature and high temperature tensile test, impact test and SEM. The bending reason of CrgMo furnace tube at high temperature was analyzed. The results show that the metallographic structure of the furnace tube begins to spheroidize remarkably. The elongation, hardness and impact property lose partly at room temperature. The yield strength and tensile strength are lower than the specified value. The thermal stress induces the bending of the furnace tube.

关 键 词：Cr9Mo 炉管 弯曲 

分 类 号：TG144[一般工业技术—材料科学与工程] TK223.3[金属学及工艺—金属材料]