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.
Because helium is a very light gas, higher flow rates must be used for effective shielding. This characteristic is. beneficial in overhead welding. Carbon dioxide: is widely used for steels. Higher welding speed, better joint penetration and sound deposits with good. mechanical properties can be achieved. Carbon dioxide is not an inert gas as the argon and helium and breaks down. into carbon monoxide and free oxygen under the heat of the arc.