轧制工艺对BMS组织和性能的影响

Influence Of Rolling Process On The Structure And Properties Of BMS

在抗酸管线钢生产过程中,轧制工艺对组织以及HIC性能都有着很大程度的影响,为了了解其影响,针对BMS进行了轧制工艺试验,试验结果显示,过低的终轧温度会造成先共析铁素体的高温析出长大,使组织的不均匀性加剧,进而对韧性和HIC性能都有着较大影响。只有在保证终轧温度的条件下,降低未再结晶区轧制温度,才能使组织细化和均匀化。

In the production process of acid-resistant pipeline steel,the rolling process has a great impact on the structure and HIC properties.In order to understand its impact,a rolling process test was carried out for BMS.The test results show that too low final rolling temperature will causes the high temperature precipitation and growth of proeutectoid ferrite,which intensifies the heterogeneity of the structure,and then has a greater impact on the toughness and HIC performance.Only when the final rolling temperature is guaranteed and the rolling temper-ature in the unrecrystallized zone is lowered,can the structure be refined and homogenized.