摘要
介绍柳钢研发SM490A-B含硼焊接结构钢板的化学成分、生产工艺流程、机械性能、冲击韧性,以及金相组织、夹杂物、晶粒度和焊接性能。
The chemical composition, production process, mechanical property, impact toughness, met- allurgical structure, inclusion, grain size and weldability of SM490A-B welded struetureal steel plate devel-oped by Liuzhou Steel were introduced.
