ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,649, issued on Aug. 5, was assigned to PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE Co. LTD. (Sichuan, China).
"Method for producing hypereutectoid steel rail resistant to contact fatigue" was invented by Jun Yuan (Panzhihua, China), Ming Zou (Panzhihua, China), Yong Deng (Panzhihua, China) and Dawei Yang (Panzhihua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a method for producing a hypereutectoid steel rail resistant to contact fatigue. The method includes performing molten iron desulphurization, converter smelting, LF refining, RH refining, continuous casting and billet heating, rolling and heat...