When the spot welder is in use, the voltage of the line will be higher and lower. What can be done to solve it?
The single-phase AC spot welder should be used. The single-phase power supply of AC spot welder has destroyed the balance of power grid and seriously affected the normal operation of other power equipment. The inverter type spot welder is supplied by three-phase power supply, and its operation does not affect the three-phase balance of the power grid.The power factor of welding machine is an important index that affects the utilization ratio of power supply equipment. If the power factor of welding machine is doubled, the requirement of power supply capacity will be reduced by 1/2. Because the resistance welding machine outputs is the low voltage, the big current. Therefore, the inductance of the secondary circuit of the welding machine is obvious, so that the power factor of the AC resistance welder can only reach 0.3~0.5. The inverter type resistance welding machine outputs DC welding current, and the power factor of welding machine can be as high as 0.95. Therefore, the requirement of the power supply capacity of inverter type resistance welding machine is less than that of the AC welding machine of the same capacity as 1/2.
1, the current and voltage parameters do not match well;2 、 the wire feeding is unstable;3 、 the quality of welding wire is poor;4 、 dry elongation is too long during welding;5 、 the barrel is blocked or the welding torch is too long and bent too much;6, wire feed wheel wear;7, the wire feeding force is not enough or send wire motor failure;8 、 the control cable has short circuit or bad contact;9, welding cable and ground cable is too long or too small, the contact is not good;10 、 welding machine internal plug-in contact is bad or parts damaged;11, welding input cable is too small or too long;12, welding machine input voltage fluctuation is too big or lack of phase.The stability of welding pressure is an important condition to achieve high quality welding. In AC resistance welding, the strong welding current causes the electrode arm to be interfered by alternating electromagnetic force, which leads to the instability of electrode pressure and influences the welding quality.The medium frequency variable resistance welder outputs DC welding current with little ripple, which will not affect the stability of electrode pressure, so it can be finished with smaller welding pressure.
The single-phase AC spot welder should be used. The single-phase power supply of AC spot welder has destroyed the balance of power grid and seriously affected the normal operation of other power equipment. The inverter type spot welder is supplied by three-phase power supply, and its operation does not affect the three-phase balance of the power grid.The power factor of welding machine is an important index that affects the utilization ratio of power supply equipment. If the power factor of welding machine is doubled, the requirement of power supply capacity will be reduced by 1/2. Because the resistance welding machine outputs is the low voltage, the big current. Therefore, the inductance of the secondary circuit of the welding machine is obvious, so that the power factor of the AC resistance welder can only reach 0.3~0.5. The inverter type resistance welding machine outputs DC welding current, and the power factor of welding machine can be as high as 0.95. Therefore, the requirement of the power supply capacity of inverter type resistance welding machine is less than that of the AC welding machine of the same capacity as 1/2.
