20G硬度与球化关系研究及寿命评估新方法
Correlation between hardness and pearlite spheroidization of 20G and a new life evaluation method for 20G
潘金平，潘柏定，程宏辉，祝新伟，沈美华，蒋腾波
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作者单位：嘉兴市特种设备检测院
扬州大学机械工程学院
中文关键字：20G炉管；布氏硬度；Matlab；珠光体球化；寿命评估
英文关键字：20G tube; Brinell hardness; Matlab; pearlite spheroidization; life evaluation
中文摘要：本文通过采用高温加速时效的方法模拟20G炉管珠光体组织球化的演变过程并测试不同球化程度下的布氏硬度，结合现场检测对电站锅炉20G炉管进行硬度和球化程度分析。基于Matlab软件模拟建立硬度与珠光体球化之间的关系模型，提出20G珠光体组织的球化与温度和时间之间的关系公式，进而提出一种简捷有效的电站锅炉炉管寿命评估方法。
英文摘要：In this paper, high-temperature accelerated aging was employed to simulate the evolution process of pearlite spheroidization of 20G tubes, and the Brinell hardness of the samples with different degrees of spheroidization was measured. Field tests were also used to analyze the hardness and spheroidization of the 20G tubes. The correlation between hardness and pearlite spheroidization was established based on MATLAB simulation. The relationship between the pearlite spheroidization of the 20G and the temperature and time was proposed, and a new efficient life evaluation method for power station boiler tubes was established.