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研究了相同成分体系下不同轧制工艺对Q345R钢板组织性能的影响。采用控轧工艺可提高热轧态力学性能,为后续热处理提供了良好的遗传组织基体。研究了不同的热处理工艺对Q345R压力容器板性能的影响。研究表明,经正火后压力容器板屈服强度和抗拉强度降低,伸长率和韧性明显提高。实现了Q345R压力容器板的稳定生产。
The effect of different rolling processes on the microstructure and properties of Q345R steel under the same composition system was studied. The use of controlled rolling process can improve the mechanical properties of hot rolling, which provides a good matrix for subsequent heat treatment. The effect of different heat treatment process on the performance of Q345R pressure vessel plate was studied. The results show that after normalizing the pressure vessel plate yield strength and tensile strength decreased, elongation and toughness increased significantly. Q345R pressure vessel plate to achieve a stable production.