这种新方法需要一种专门的高效率的机械装置。对接坡口焊是一种连接迅速的施焊工艺，它可以有效地保证金属盖板的胀缩。
The welted joint, executed in this way, is a rapid means of jointing and effectively allows for expansion and contraction of the metal covering.
针对采用“两次拼焊工艺”拼焊大型盖板存在的问题，提出了“一次拼焊”工艺。
In order to overcome the difficulty of heavy cover plate installation with two times of welding, a welding procedure finished cover plate welding at one time is put forward.
盖板结构焊后基本未产生焊接变形。
The welding start location has little effect on the deformation of the structure.
盖板结构焊后基本未产生焊接变形。
The welding start location has little effect on the deformation of the structure.
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