The preloading time refers to the time from when we start the switch – cylinder action (electrode head action) to pressurization, which is called preloading time.
The sum of the preloading time and the pressurizing time is equal to the time from the cylinder action to the first power-on. If the start switch is released during the preloading time, the welding will be interrupted and return, and the welding program will no longer be executed. When the time reaches the pressure time, even if you release the start switch, the welding machine will automatically complete a welding process.
Properly adjust the preloading time so that if the workpiece is not placed properly during the welding process, it can be interrupted immediately to avoid damage to the workpiece. In the first multi-point welding, the preloading time and the pressure time are added together, and in the second welding, only the pressure time is performed. (The start switch should always remain on during multi-point welding).
The length of pre-pressure time and pressurization time needs to be adjusted according to the air pressure and cylinder speed. The principles are:
To ensure that the workpiece is energized after being compressed, the welding and pressurizing mechanism uses a circular guide rail as the guiding mechanism. The spindle is hardened and ground by surface quenching. It has the advantages of high guiding accuracy, high rigidity and wear resistance to ensure the accuracy of electrode movement and electrode movement. The follow-up property reduces the impact of the electrode on the workpiece during pressurization, and solves the original problems of substandard penetration, weak welding, pores and slag inclusions after welding.
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Post time: Jan-06-2024