The paper presents and analyses the architecture,the principle and the application in practical production of two kinds of the automatic weld seam tracking in EBW:Memorizing tracking and reflection of the secondary electron tracking.

• 介绍了焊缝自动跟踪技术在电子束焊接(EBW)应用中的两种主要模式,即示教式和二次电子反射式。