Gas Flow Meter and Tester
A gas flow meter measures the shielding gas flow directly at the torch nozzle and ensures that the process-specific gas flow rates are maintained to avoid porosity.
Physical-chemical mechanism of action
The gas testing device measures the gas flow in the weld and checks whether the specified gas volume flow rates are maintained. This is important to prevent porosity, as insufficient shielding gas leaves too much oxygen in the metal, which leads to pores.
Metallurgical relevance & risks in welding
Incorrect gas amounts can lead to porosity and weak spots in the weld. Too little gas causes oxygen inclusion, too much gas can lead to uneven hardening and poor mechanical properties.
Workshop practice & instructions for use
Use the gas testing device regularly to check the shielding gas amount. Make sure the gas volume flow rates match the requirements of the process used. If there are deviations, correct the gas supply and run another test.