Abstract
The research workinvestigatethe weld bead characteristics of WC-CoCr coatingfabricated by using tungsten inert gas welding process. Owing to the heat generated during the TIG coating, the extent of the temperature rise is adequate to cause the significant changes inthe melt dimensions of the coating. Toolmakers microscope has been used to capture the coating cross-section obtained at different values of argon flow rate. ImageJ software has been used to measure the porosity level in the coatings. The results shows that higher flow rate of argon gas increases the porosity and weld contamination in thecoating, because of the turbulencetakes place at higher flow rate.
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