武汉新火车站电梯井整体焊接工艺

本工程结构形式为箱型结构,施工难点在于焊接节点多、焊接方位多且大多数焊缝为全熔透焊缝,很容易产生焊接变形及裂纹。对此,首先采用焊前预热,单元件箱体采用电渣熔嘴焊和双丝双弧焊对称焊接工艺,电梯井进行整体焊接并采用多方位焊接工艺。此焊接工艺能较大地提高焊接质量及效率,有效地控制焊接成型后焊缝出现裂纹。

WELDING PROCEDURE OF WHOLE ELEVATOR WELL FOR THE WUHAN NEW RAILWAY STATION

The project is box structure.Its difficulty is that a lot of welded joints and directions of welding,and the most of welding is full penetration welding which is easy to occur welding deformation and crackes.As for this,firstly weld preheating is adopted,then consumable guide electroslag welding and symmetry welding of diplonema and double-arc for unit box structure are performed,the elevator shaft is welded as a whole and performed multiaspect welding,which can improve the quality and efficiency of the wel...