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.
GTAW (TIG) Gases: TIG welding shielding gases are going to be argon or helium, or a mixture of the two. But argon is the most commonly used shielding gas for TIG welding. If you want a more stable arc and good cleaning action then argon is the gas you want for TIG welding. As described above, argon is heavier than air and therefore can provide good coverage of your weld pool which will keep contaminants of your weld out.