Research on Prediction Model of GMAW Ignition Time

The prediction model of gas metal arc welding(GMAW) ignition time was established and the(equation) of calculating ignition time was obtained.The result shows that the ignition time has relationship with not only the heat and electric characteristic but also the wire diameter,ignition current and ignition contact voltage.The calculating ignition time is consistent with experiment ignition time and the result proves that this calculating(equation) has rather veracity and reliability.This model can provide the guidance and advice to understand GMAW ignition process and to design reasonable power source.