MICROSTRUCTURE STATE EVALUATION AND RESIDUAL LIFE PREDICTION FOR STEAM CONDUIT OF BOILERS IN SERVICE

doi:10.19666/j.rlfd.2004.06.021

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MICROSTRUCTURE STATE EVALUATION AND RESIDUAL LIFE PREDICTION FOR STEAM CONDUIT OF BOILERS IN SERVICE

Thermal Power Generation Issue 6, Pages: 71-74(2004)

更新时间：2025-09-28

- MICROSTRUCTURE STATE EVALUATION AND RESIDUAL LIFE PREDICTION FOR STEAM CONDUIT OF BOILERS IN SERVICE
- 作者机构：
  
  1. 大连理工大学
  2. 大连理工大学,辽宁,大连,116024
  3. ,辽宁,大连,116024
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2004.06.021
  CLC： TM621
- Published：2004
- 稿件说明：
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MICROSTRUCTURE STATE EVALUATION AND RESIDUAL LIFE PREDICTION FOR STEAM CONDUIT OF BOILERS IN SERVICE[J]. Thermal Power Generation, 2004, (6): 71-74.
DOI：

MICROSTRUCTURE STATE EVALUATION AND RESIDUAL LIFE PREDICTION FOR STEAM CONDUIT OF BOILERS IN SERVICE[J]. Thermal Power Generation, 2004, (6): 71-74. DOI： 10.19666/j.rlfd.2004.06.021.

摘要

对某热电厂已运行 10 8835h的锅炉导汽管组织状态和力学性能进行了试验分析。金相分析表明

在役的导汽管材料组织中

珠光体已经完全球化

但材料的常温力学性能仍符合标准。通过对持久温度试验数据的线性拟合与平行外推

预测其剩余寿命至少仍有 70 0 0 0h

Abstract

Through tests

the microstructure state and mechnical properties of steam conduit for a boiler which had been operating for 108835 hours in a thermal power plant have been experimentally analysed. Metallurgical analysis shows that the pearlite in material microstructure of the steam conduit in service has been completely spherodized

but the mechanical property of material at room temperature being still in conformity with the standard. Through linear fit and parallel extropolation of test data for enduring strength

the residual life of said steam conduit has been predicted still to be no less than 70000 hours.

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