压力容器用国产化高端钢材和焊材焊接性研究概况

压力容器用国产化高端钢材和焊材焊接性研究概况 Research overview on weldability of domestic high-end steels and welding materials for pressure vessels 房务农 FANG Wunong 1 first-author 蒋军 JIANG Jun 1 合肥通用机械研究院有限公司 合肥通用机械研究院有限公司 Hefei General Machinery Research Institute Co., Ltd. Hefei General Machinery Research Institute Co., Ltd. 我国在钢材和焊材的焊接性研究方面与发达国家存在明显差距,且焊材的焊接性研究又远滞后于钢材。针对压力容器用几个牌号国产化高端钢材和焊材在焊接性方面做了大量细致的研究工作,即从"焊接角度"去炼钢,使钢材由"可焊"变为"易焊";通过合理选择焊材渣系,优化合金体系和配方,使焊材各项性能优良,实现焊材与钢材的良好匹配,焊接接头焊接裂纹敏感性低、焊接线能量敏感性低、止裂性能好、低温冲击韧性佳等,为压力容器焊接质量提供了强有力的保障。 There is an obvious gap between China and developed countries in the weldability research of steel and welding materials. In recent years, a lot of detailed research works have been done on weldability of several domestic high-end steels and welding materials for pressure vessels. That is, making steel from the point of view of welding, to make the steel from ‘weldable’ to ‘easry to welding’. Through reasonably selecting the welding slag system and optimizing the alloy system and formula, the welding materials have good performance. A good match between welding material and steel is realized, the welding joint has low crack sensitivity, low welding heat input sensitivity, good crack arrest performance and good low temperature impact toughness, which provides a strong guarantee for the welding quality of pressure vessels. 钢材 焊材 焊接性 力学性能 steel welding materials process weldability mechanical property TG457.11 2022-03-08 9 50