【摘要】 本文在分析了GTAW晶体管电源的工作条件后,首先提出了研制低空载电压晶体管电源的技术经济意义;并从理论上探讨了低压非接触引弧的机理,为研制新型晶体管电源提供了理论依据。其次通过对焊接回路系统的数学分析,求得了采用反馈环节对稳定引弧过程的影响关系,进行了电路系统的合理设计。最后列举了新型晶体管电源的技术参数,并阐述了它的焊接性能。在生产性考核中表明其低空载引弧极端可靠。更多还原

【Abstract】 This paper puts forward the technical and economic significance of developing alow open circuit voltage transistor power source after analysing the GTA weldingcondition when using transistor power sources.The mechanism of no-toucharc-ignition withlow open circuit voltage power source has been explored in order to find a theoretical basisfor developing the new power source.By mathematical analysis of the welding circuitsystem,the authors investigated the influence of feedback units upon the process of arcstabilizing in the arc igniting period,thus making the optimal design of the circuitsystem for the welding power source possible.The paper gives also the technical para-meters of the designed power source.The arc ignition has been proved to be very re-liable in welding production.更多还原