Control of thermal homogeneity of normalizing process for P92 steel

ZHAO Qiang; AN Wei; SHENG Hui; PENG Xiankuan; XU Guangxin

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Control of thermal homogeneity of normalizing process for P92 steel

更新时间：2025-09-28

- Control of thermal homogeneity of normalizing process for P92 steel
- Thermal Power Generation Issue 1, (2017)
- 作者机构：
  
  1. 国网新源控股有限公司技术中心工程技术所,北京,100161
  2. 南瑞集团公司(国网电力科学研究院),江苏,南京,210003
  3. 北京国电富通科技发展有限责任公司,北京,102401
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG156.4
- Published Online：24 January 2017，
  
  Published：2017
- 稿件说明：
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ZHAO Qiang, AN Wei, SHENG Hui, et al. Control of thermal homogeneity of normalizing process for P92 steel[J]. Thermal power generation, 2017, (1).
DOI：

ZHAO Qiang, AN Wei, SHENG Hui, et al. Control of thermal homogeneity of normalizing process for P92 steel[J]. Thermal power generation, 2017, (1). DOI：

摘要

正火工艺对P92钢的性能影响较大，某台热处理炉对P92钢进行处理常出现金相不合格问题，对此，本文对该热处理炉的有效加热区进行了检定

同时通过控温精确的小加热炉模拟工业热处理炉低温加热区

并采用光学显微镜、扫描电子显微镜及透射电子显微镜对2种热处理后的P92钢试样进行组织观察。结果表明:正火过程中炉膛内温度存在偏差和炉膛底部温度明显偏低是造成P92钢金相不合格的主要原因；970 ℃正火与1 070 ℃正火后的P92钢性能基本无差异

金相组织均为细小的板条马氏体

属于合格金相组织；随着正火温度升高

微观组织的马氏体板条的宽度逐渐增加

强化相析出明显

持久强度提高

最小蠕变速率下降。

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