Simulation analysis of Cr35Ni45Nb cracking furnace tube welding process based on double ellipsoidal heat source. - Ying Sun 004; Zongying Gao; Guozhang Jiang; Gongfa Li; Bo Tao; Hegen Xiong; Yongcheng Cao (Int. J. Wirel. Mob. Comput., 2021)