Study on Quality of Continuous Cast Slab for High Grade Drilling Pipe
Author of the article:LIU Min;LIU Wei;FENG Xiaoming;LAI Chaobin
Author's Workplace：Xinyu Iron and Steel Co.,Ltd.,Xinyu 338001,China;Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China;Tianjin Iron and Steel Co.,Ltd.,Tianjin 300301,China
Key Words：high-grade drilling pipe continuous cast slab low magnification grade inclusionl macrostructure
Abstract：Microstructure,composition and segregation of ZT1740 continuous cast slab for high-grade drilling pipe were studied by cold acid method,chemical analysis,SEM and EDS analysis,gas analyzer.Results show that the macrostructure is good,gas contents including[N],[H]and[O]are low and satisfy the design requirement of the slab used for drill pipe.Element segregation,inclusion size and distribution all meet the demands of the high-grade drilling pipe.
