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对运行了约８０００ｈ的废热锅炉换热管进行了室温、高温机械性能试验，扩口与压扁检验以及金相组织分析，结果表明，换热管材料性能没有发生明显变化。
The performance of the heat exchanger tubes for waste heat boiler running at about 8000h was tested at room temperature and high temperature, flaring and flattening test and microstructure analysis. The results showed that the material properties of heat exchanger tubes did not change significantly.