In the past few years, the pipeline industry in North America has faced a reported increase of pipeline girth weld failures predominantly in grade X70 pipe welded with cellulosic consumables. Weld strength matching and HAZ softening were two factors believed to have contributed to the concentration of strain during, or soon after, construction which ultimately lead to an overload failure of the girth welds. The work reported in this paper aimed to establish and clarify the correlation between steel chemical composition and the HAZ hardness in typical production girth welds and a range of weld thermal simulations. The first stage was to calibrate the influence of weld cooling rate of both thermal simulations and real welds in steels over a wide range of chemical composition, typical of commercial high strength API pipe. Second, the influence of Pcm, carbon content, Mo content and cooling time in terms of minimum and maximum hardness were investigated. The comparison between simulated HA
VANCOUVER, BC / ACCESSWIRE / February 14, 2023 / Saville Resources Inc. (TSXV:SRE)(FSE:S0J) (the "Company" or "Saville") is pleased to announce the extension of the earn-in agreement with Commerce Resources
VANCOUVER, BC / ACCESSWIRE / February 14, 2023 / Commerce Resources Corp. (TSXV:CCE)(FSE:D7H0)(OTCQX:CMRZF) (the "Company" or "Commerce") is pleased to announce the extension of the earn-in agreement with
COEUR D'ALENE, ID / ACCESSWIRE / January 11, 2023 / Idaho Strategic Resources (NYSE American:IDR) ("IDR" or the "Company") is pleased to announce its first drill results from the Diamond Creek REE Project