摘要
本文介绍一种由开关式场效应管恒流源和斩波器构成的脉冲ＴＩＧ焊接电源，除了可以获得频率及占空比独立可调的低、高频脉冲输出外，还可获得低频调制的高频方波群输出。由后者形成的低频调制高频ＴＩＧ焊兼有低频脉冲ＴＩＧ焊对熔池输入热量易于控制及高频脉冲ＴＩＧ焊接电弧能量集中挺直的优点。
Aswitch-type MOSFET pulse TIG welding power source,which consists of constantcurrent source and chopper is introduced in this paper.The welding current output with low,high frequencepulse or high frequency square wave group medulated by low frequence is obtained,and the frequence andduty ratio of the welding current can be adjusted independently.The high frequence TIG welding medulatedby low frequence has the advantages of both the low frequence pulse TIG welding in which the heat inputofthe welding pool is easily controlled and the high frequence pulse TIG welding in which the arc is en ergy-concentrated and stjff.
出处
《电焊机》
1995年第1期4-6,共3页
Electric Welding Machine
关键词
TIG焊
脉冲电源
场效应管
电弧焊
TIG welding Pulse are welding source MOSFET High frequencesquare wavegroup
