Why is there any spatter in spot welding machine? How to solve?
It's normal to see a spatter when welding the spot welder, but if it is too big, it has something to do with the program parameters. To completely avoid spatter, use DC welder. Absolutely no splash. Intermediate frequency spot welder. Want to know, can chat me privately.
In the process of welding, the interface of the welding rapidly melts in a short time, the metal heat increases instantaneously, and the molten liquid can not be cooled,Under the action of pressure, the liquid ejected from the nugget and produced a splash.Produce heat publicity Q=I2RT, we know that when the heat is too high, easy to splash. Therefore, the spatter can be controlled from the angle of current and resistance.Current density: the workpiece surface has dirt or gap between the workpiece, the current density increases, splash increasesThe electrode cap is asymmetrical or worn, the current density is increased, and the spatter is increasedElectrode pressure: electrode arm prevents electrode misalignmentReasonable welding stress controlled by electrode pressureWelding parameter: current control, reasonable welding currentPower on time, reasonable timeFluctuation of power grid prevents fluctuation of current caused by fluctuation of power supply
Welding spatter can not be avoided, can only reduce, for example, reduce current, find a good point of the master, as well as welding rod baking.However, argon arc welding is used to avoid spatter at present.
