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Gas Post-Flow Time
This software function sets the gas post-flow time. It ensures rapid cooling of the workpiece and welding head, as well as extending the service life of the tungsten electrode and equipment.
See how easy it is to set up this function.
Setting the gas post-flow time is of great importance in orbital welding, as it directly influences weld seam quality. The gas post-flow time refers to the duration required for the shielding gas to flow through the weld area after the welding process is complete, continuing to protect it from oxidation and other contaminants.
With the correct gas post-flow time setting, weld seam quality can be improved while minimizing rework. Furthermore, it ensures rapid cooling of the workpiece and welding head, as well as extending the service life of the tungsten electrode and equipment. In this video, we demonstrate how to operate the Flow Force function and provide practical tips on how to correctly set the gas post-flow time at the end of the welding process.
How it works
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Activate the Flow Force function within the post-purge section of the welding procedure by toggling the switch.
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A new value appears: Flow Force Time.
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For gas post-flow at the end of the welding process, the Flow Force time can be set equal to the gas post-flow time, as there is no interruption of the weld chamber.
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The setting of the gas post-flow time depends on the previously set Flow Force volume flow in the pre-purge section of the welding procedure. Since the Flow Force volume flow was previously increased to 45 CFH (21.3 l/min) and the gas pre-flow time was reduced to 15 seconds, the gas post-flow time should also be reduced to 15 seconds. An adjustment of the Flow Force time to 15 seconds occurs automatically.
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Save these values in the program. Select Quick Save and confirm with “Yes”.