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Q345B高压化肥管中魏氏组织消除的实践应用

詹飞,郭志文,张程远, 邬占飞,姜海龙, 康虹

Science & Technology of Baotou Steel(Group) Corporation（2021）

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Abstract
文章针对Q345 B高压化肥管纵向冲击性能不合格的问题,采用金相显微镜对其组织进行微观分析,发现造成冲击性能不合的原因是组织中存在大量的魏氏组织.采用正火热处理工艺对样管进行处理,结果表明:采用正火处理可以将钢中的魏氏组织消除,且纵向冲击功大于120 J,达到GB 6479—2013标准中冲击下限值的3倍.
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