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国外对28种CaF_2～CaO-SiO_2系列熔剂进行了试验。对含铌的HSLA钢进行了双Ⅴ型型槽埋弧焊试验和堆焊试验。实验焊丝为E7053焊丝,用两种不同的热量输入参数(1.9和3.3kJ/mm)进行实验并对焊缝进行了定量金相和化学分析检验。
A total of 28 CaF_2 ~ CaO-SiO_2 fluxes were tested abroad. The HSV steels with niobium were tested with two Ⅴ-type slot submerged arc welding and overlay welding. The experimental wire, an E7053 wire, was tested with two different heat input parameters (1.9 and 3.3 kJ / mm) and a quantitative metallographic and chemical analysis of the weld was performed.