Investigation of Processes in the Keyhole of Electron-Beam Welding by Monitoring the Secondary Current Signal in the Plasma

2014 ◽  
pp. 217-230
Author(s):  
D. N. Trushnikov ◽  
V. E. Shchavlev ◽  
G. M. Mladenov ◽  
L. N. Krotov
Keyword(s):  
Electron Beam ◽  
Electron Beam Welding ◽  
Current Signal ◽  
Secondary Current

scholarly journals Use of a Secondary Current Sensor in Plasma during Electron-Beam Welding with Focus Scanning for Process Control

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Dmitriy Trushnikov ◽  
Elena Krotova ◽  
Elena Koleva
Keyword(s):  
Electron Beam ◽  
Control System ◽  
Closed Loop ◽  
Electron Beam Welding ◽  
Current Sensor ◽  
Feedback Signal ◽  
Secondary Current ◽  
The Stability ◽  
Phase Relationships ◽  
Pilot Tests

We consider questions of building a closed-loop focus control system for electron-beam welding. As a feedback signal, we use the secondary current in the plasma that forms above the welding zone. This article presents a model of a secondary current sensor in plasma during electron-beam welding with focus scanning. A comparison of modeled results with experimental data confirms the adequacy of the model. We show that the best results for focus control are obtained when using phase relationships rather than amplitude relationships. We outline the principles for building an EBW focus control system based on parameters of the secondary current in plasma. We simulate the work of a control system’s circuits and demonstrate the stability of the synthesized system. We have conducted pilot tests on an experimental prototype.

GRADIENT BOOSTING METHOD APPLICATION TO SUPPORT PROCESS DECISIONS IN THE ELECTRON-BEAM WELDING PROCESS

2020 ◽  
Vol 21 (2) ◽  
pp. 206-214
Author(s):  
V. S. Tynchenko ◽  
◽  
I. A. Golovenok ◽  
V. E. Petrenko ◽  
A. V. Milov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Welding ◽  
Welding Process ◽  
Gradient Boosting ◽  
Boosting Method
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