摘要
等离子体控制是解决高功率激光焊接的关键技术。为完善对等离子体控制技术 ,对焊接过程中等离子体电流的形成进行了理论分析 ,并将等离子体导电过程简化等效为一个具有内阻的电源模型。采用 3 k W CO2 激光器在不同激光焊接规范下 ,依据测量得到的等离子体电流计算得到了等效电源电压和等效内阻。
Plasma control is one of the key techniques for high power laser welding. The plasma current in laser beam welding was analyzed and a model that takes plasma as a power source with resistance was developed. The plasma current in a 3 kW CO 2 laser welding beam was measured experimentally to calculate the equivalent power source voltage and source resistance for different laser welding parameters. The plasma can be controlled by a magnetic field according to the model.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第4期488-490,共3页
Journal of Tsinghua University(Science and Technology)
基金
国家"九七三"基础研究项目
清华大学"九八五"基金项目 ( 0 12 -10 10 5 0 )
关键词
激光焊接
等离子体控制
电流模型
辅助磁场
laser beam welding
plasma control
current model
auxiliary electric
magnetic fields
