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.
1 U.S. fuel gas safety codes require that new piping installations be pressure-tested with air or an inert gas prior to initial operation, and this activity requires purging during the introduction of natural gas.nsure personnel involved in gas purging operations are fully trained and knowledgeable about safe gas venting practices, the proper use of gas detectors, and the danger of relying on the sense of smell alone to detect gas releases. Include training on the problem of odor fade in new gas piping systems.