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、位置和炉管寿命均与实际运行结果基本吻合。
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.
当制氢转化炉炉管发生局部失效时，采用局部更换炉管方法可延长整根炉管的使用寿命。
When a reformer furnace tube locally failed, the whole furnace tube service life will be extended by replacing the failed furnace tube.
在考虑渗碳损伤的前提下对炉管的剩余寿命进行了评估。
The residual life of the tubes is estimated based on the carburizing damage analysis.
比较了不同损伤蠕变耦合模型的计算结果，为炉管损伤及寿命评估提供了有效的方法和手段。
The calculating results of various damage creep coupling models were compared, and some efficient methods were provided for the damage and service life estimation of the furnace fire bars.
目前，这些加热炉管的运行状况如何、继续使用能否带来危害、剩余寿命有多少等都是使用单位极为关切的。
Presently, the running situation, the possible damage of kept running and the residual life of the heating furnace tube are concerned by the factories.
结果表明，由于静态混合元件的使用明显降低了炉管表面温度，所以其服役寿命满足要求。
The investigation result shows that the surface temperature of tubes is remarkably reduced due to the static mixed units so that their service life meets the requirement.
研究了不同应力函数准则、开停车对炉管蠕变损伤及寿命的影响。
The influences of various stress function criteria, operation and stop on the creep damage and service life of the furnace fire bars were studied.
对高温构件的氧化层形成机理以及内氧化层与炉管剩余寿命的相关关系进行了阐述。
The formation mechanism of oxide layer and the relationship between the oxide and the residual life of high temperature component had been introduced in this paper.
通过对一段转化炉管外壁超温原因的分析，制定相应的防范措施，以延长其使用寿命。
By analyzing the causes for overheating of the external wall of the primary reformer tubes, preventive measures have been taken accordingly, so as to prolong their service life.
该模型可以用来分析炉管失效的原因，预测炉管的损伤程度及剩余寿命，为炉管损伤分析和及时更换炉管提供科学依据。
This model can be used to analyze the failure and to predict the damage and the residual life of the tube. It is helpful for the tube exchanging in time.
某石化公司常减压蒸馏装置常压炉炉管已经超过设计寿命，有必要对其进行全面的检测和安全评定。
The atmospheric furnace tubes of the atmospheric-vacuum distillation unit in a petrochemical company had been operating beyond their service life.
中国石化扬子石油化工股份有限公司烯烃厂1号乙烯装置两台乙烷炉运行周期一直偏低，辐射段炉管使用寿命较短，并影响急冷油减粘系统的稳定运行。
The cycle of two ethane furnaces in No. 1 ethylene plant of YPC Limited Company is very short. The short life-span of tubes in radiation section affects the stable operation of quench oil system.
介绍了奥氏体炉管在非破坏状态下的寿命评价新技术。
A novel nondestructive technology of life evaluation for austenitic tubes of boiler is recommended.
介绍了奥氏体炉管在非破坏状态下的寿命评价新技术。
A novel nondestructive technology of life evaluation for austenitic tubes of boiler is recommended.
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