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压力容器用国产化高端钢材和焊材焊接性研究概况

Electric Welding Machine(2020)

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Abstract
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.
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