1Production Practice of Increasing Coal Ratio in 2# Blast Furnace of Shiheng Special SteelZHANG Yufeng, LIU Xiaodong, CHANG Zhongliang, DONG Chengguo, CHANG LuProduction Technology1-22Coal Consumption and Production Practice of the Hismelt Smelting Reduction Ironmaking TechnologyJIA Lijun, TANG YanlingProduction Technology3-63Development of TMCP Production Process for High Strength Q370q Bridge SteelREN JiyinProduction Technology7-94Development of 40Cr14 Steel of High-end Precision Measuring Tools Used in CaliperZHANG Shuang, LI Tie, WANG JunhaiProduction Technology10-125Analysis and Improvement of Fracture Reason for Large Back-up RollZHANG ChanghongProduction Technology13-156Analysis of the Cause of Surface Cracks in 40MnB SteelYU Hongbo, LIU Lei, MENG WenzhenProduction Technology16-187Cause Analysis of Oblique Cone Crack in SUP9N Spring SteelZHAO Lei, WEI Xinyan, LI ChongjianProduction Technology19-208Influence of Non-metallic Inclusion on Quality of Continuous Casting SlabsLI LingProduction Technology21-229Research on Recrystallization Behavior of FH40 High Strength Ship Plate SteelGU Daqing, MA HengTest Research23-25,2910Source Analysis and Prevention Strategies of Large-Size Inclusions in Bearing SteelsTIAN Chao, WANG Xiangdong, LI ChangxinTest Research26-2911Analysis of the Cause of Cracking in the Center of Q690D Steel after WeldingLI Wei, LI Xinyu, YU Tao, XU JiyongTest Research30-3212Effects of Mo and Nb on the Strength and Toughness of Pipeline SteelLI Heyi, WANG Qingbo, SUN Yingjie, LIU HongliangTest Research33-3613Application of Scanning Electron Microscope in Metal MaterialsLI Guiying, LI Jiankai, LIU ZhengpengTest Research37-3914Determination of Primary and Secondary Elements in Manganese Silicon and Ferromanganese Alloys by Wavelength Dispersive X-ray Fluorescence SpectrometryDING Yuxian, ZHANG QingfengTest Research40-4115Study on Performance of Cermet Coating by Flame Supersonic Spraying for Centrifugal Water Injection PumpWANG Qunzhang, PAN Xianglei, LI Zhihe, DENG Huabing, Lü Zhen, YANG DeliangTest Research42-4416Hydrothermal Preparation of Aluminium-based Amorphous Spherical PowdersYANG ConglinTest Research45-46,5217Fault Detection and Diagnosis of Chillers Based on GP Model and Unsupervised SVM AlgorithmZHANG JieyuTest Research47-5218Application of Safe Recovery and Purification Technology of Waste Hydrogen from Full Hydrogen Bell Type Annealing FurnaceXU Guodong, LI Chuanjun, DU Shouzhong, ZHANG Yugang, QI CuijunEnergy Saving and Pollution Reducing53-5419Calculation of Purchased Scrap Yield Rate and Analysis of the Cost ImpactZHANG Youjian, XU Xulin, QU Zhiguo, PEI Zhenjiang, YU HaoEnergy Saving and Pollution Reducing55-5620Automatic Control System of Boiler Water Level of Heat Recovery Boiler of ConverterLI HonglinInformation Construction57-59 