1Principles of hydrogen metallurgy:thermodynamic mechanisms of iron reduction by carbon and hydrogenLIU Shuai, LI Bin, GUO Hanjie1-112Development and practice of intelligent water quenching system for seamless steel pipesYANG Yifan, WANG Baofeng, HUANG Jun, DING Wei, YANG Peng, ZHANG Yichen, SU Yunfan, TIAN Ruiming, ZHANG Jiawei12-173Research on automatic steel loading control of a 900 mm hot rolling line push-type heating furnaceTENG Peipei, PAN Lishuang, JIAO Chenyang, WANG Zuhua, TANG Chao, ZHANG Yulin18-224Research onfault prediction algorithm for oilfield equipment manufacturing supervision based on ACL-OFE-FP algorithmYU Zhuo23-295influence of circumferential water flow density distribution on heat transfer and solidification during ultra-large-section beam blank continuous castingYANG Xinhua, HUANG Zhidan, GAO Qi, ZHANG Yanming, ZHANG Rende, YU Jintao, CHEN Dengfu, AI Songyuan, LONG Mujun30-376Study on electrolytic specimen preparation parameters for medium carbon steel based on the Jacquet mucosal modelWANG Zhenyu, WANG Jianmei, MAO Yangbo38-437Experiment on the rebound phenomenon of small slenderness ratio hydraulic tie boltWANG Yinchao, SU Haopeng, LI Shaolin, SHI Duoqi, QI Hongyu, CHEN Qingsen44-488Research on thin-walled thick nozzle high-pressure gas cylinder inner liner neck-spinning forming lawZHANG Binkai, JIANG Lianyun, ZHAO Chunjiang, LIANG Jianguo, WANG Chen, BIAN Qiang49-559Rupture life evaluation of material for steam turbine based on support vector machineYU Zhengguang, JIANG Lei, ZHANG Xiaolin, CAO Hai, YANG Jihui56-6010Numerical calculation of impedance for electric heating system in steel mills considering skin effect and proximity effectMA Qiao, TONG Bing, TONG Xiangqian, ZHAO Teng, KOU Kaite, YANG Hongyin, WANG Yong61-6911Pushing performance prediction of a blast furnace pushing system based on KNN regressionHU Niansan, LIU Kedao, ZHANG Xinyu, FENG Wenfei, QIU Yang, ZHU Hao70-7812Study on the influence of inner spline wear on the strength and life of the left input gearZHANG Qitao, LIU Hua, ZHAO Haibing, HUANG Kun79-8413Research on control method of hydraulic pitch servo system based on SMCHE Peng, ZHONG Xiaocun, DU Xiong, ZHOU Wentao, LIU Baoyu85-9114Research on the degradation of bearings and gears in three stage reducer in reducersBU Xuyang, ZHANG Qingzhou, ZHAO Fei, WU Xihui, WANG Guanghui92-9815New structural design of reducer for low sprint pumping unitWEN Bin99-102 