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本文针对低温球罐用钢的技术特点和使用要求,对我国研制的低温高强度钢(DG—50)及不同焊条施焊的对接接头的低温韧性和断裂性能进行了较系统的研究,为采用该钢研制较高参数的球罐提供了技术依据。
In this paper, according to the technical characteristics and requirements of low-temperature spherical tank steel, the low-temperature toughness and fracture properties of low-temperature high-strength steel (DG-50) and butt welded joints with different welding electrodes were studied systematically. The steel developed by the higher parameters of the tank provides a technical basis.