Submerged arc welding under high heat input has been conducted on EH36 plate employing two series of CaF2-SiO2-CaO-fused fluxes. The effects of CaO and SiO2 on element transfer between slag and weld metal are systematically evaluated using thermodynamics. It is concluded that the substitution of CaF2 by CaO is an environmentally friendly approach to suppress the transfer of Si to weld metal and decrease the loss of Mn from weld metal to slag.

中文翻译：

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埋弧焊中三元 CaF2-SiO2-CaO 焊剂的微调元素转移策略：一种环保方法

使用两个系列的 CaF2-SiO2-CaO 熔剂在 EH36 板上进行了高热输入下的埋弧焊。使用热力学系统地评估了 CaO 和 SiO2 对熔渣和焊缝金属之间元素转移的影响。结论是，用 CaO 替代 CaF2 是一种环境友好的方法，可以抑制 Si 向焊接金属的转移，减少 Mn 从焊接金属向熔渣的损失。