EPIC Aadhaar Seeding - How to Seeding the EPIC With Aadhaar - Duration: 4:52. SAMPATH K 6,600 views
In some instances, consider adding helium to the shielding gas mixture for its ability to provide a hotter, more penetrating arc on thicker sections. For the GMAW process, a mixture of 75 percent helium balanced with 25 percent argon is a good option.inally, consider purchasing low-dew-point shielding gases as protection against porosity. Follow all recommended welding procedures for shielding gas flow rates and purge cycles. As with any welding process on any material, following some basic guidelines is critical to obtaining the best results.
7 Shielding gas  Check that the appropriate gas is used (page 3). Adjust gas flow rate between 30 and 40 cfh (15 and 20 l/min). Use 40 cfh (20 l/min) when welding outside. Check that the gas flow from the gas nozzle is at the recommended rate. Check the gas flow rate again if the gas nozzle diameter is changed.