This welding backing is used with all one-side processes. Especially for those which do not demand backbead cleaning.
本衬垫可用于各种单面焊接工艺的位置，特别适用于不一定要求封底焊道的场合。
2
It is necessary to extract molten pool geometrical parameters in real time or to extract backbead width off-line either in seam tracking or in penetration control.
不论熔透控制还是焊缝跟踪，都需要实时或离线提取焊接熔池正面或反面的几何参数。
3
You can imagine a bead with a wire going through it and the bead can only slide back and forth.