风力发电塔架无清根全熔透埋弧焊焊接技术

Completely permeating and not clearing welds submerged arc welding technology for wind power generation tower

介绍了一种新型的应用于风力发电塔架制造过程中的无清根全熔透焊接工艺技术,该焊接工艺方法是通过改变坡口角度、筒体成形、外侧坡口打底、内侧埋弧自动焊、外侧埋弧自动焊等工艺步骤来实现的。规避了传统的碳弧气刨清根焊接方法因焊缝重复受热而导致的构件变形和焊件晶粒尺寸变大、强度降低等缺陷,并且气刨后的焊接坡口形状很不规则,这也使得构件的焊接质量难以保证。

This paper mainly describes a new welding process applied to the wind power tower manufacturing process,which does not need to clean the weld bead,can achieve full penetration welding. Tire wehling process is achieved by changing the groove angle,the barrel forming,the outer side of the back cover,the inner submerged arc welding.the external sub,nerged arc welding process steps to achieve. To avoid the traditional carbon arc gas of the root of the welding method to cause the weht to repeat the heat,resulting in deformation of parts and weldment grain size larger,lower strength and a series of defects. And the shape of the welding groove after the gas is very irregular,which makes the welding quality of the component is difficuh to guarantee.