The quality of backchipping is not only in relation to the quality of final welding seam, but also the schedule and cost of the whole project.
清根质量好坏不仅关系到焊缝的最终质量，同时还影响工程的进度和成本。
2
Therefore, the law of welding seam backchipping was studied based on the newly developed automatic backchipping machine with a disk-type non-consumable electrode.
因此，本文基于新研制的非熔化盘式电极自动清根技术，对焊缝清根规律进行了研究。
3
The research of backchipping can be basis of processes planning and technology parameters optimization. Meanwhile, it will be a theory foundation for the subsequent welding.