Such a structure, with many circular soldering seams and its bowrdary additive stress in the cone body, increases the insecure factors and the work of melding and ray inspection, and its outline is not so elegant as wess.

• 此结构不仅环焊缝多；锥形段存在边界迭加应力；不安全因素增加；外形不美观；也增加了焊接及射线探伤的工作量.