摘要
通过对乙烯裂解炉管典型工况分析 ,建立了炉管在温度、内压、渗碳和蠕变等交互作用下的有限元计算模型 ,并对 HK4 0奥氏体耐热钢制成的乙烯裂解炉管在 1 1 73 K下的应力场和蠕变损伤分数进行了模拟 ;结果表明渗碳是引起炉管失效的主要原因 .通过计算得到的炉管失效方式。
After analyzing the typical operation conditions of ethylene cracking tubes, a finite element calculation model under interactions of temperature, internal pressure, carburization and creep is founded. Stress distribution and creep damage distribution are simulated for cracking tubes made from HK40 steel at 1173 K. The calculated results show that carburization is the main cause of the failure of tubes. As for the way and location of the failure of tubes and the life of tubes, the calculated results are in good agreement with the actual results.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2001年第2期192-196,共5页
Journal of Dalian University of Technology
基金
国家自然科学基金!资助项目 ( 5 0 0 710 16)
