New Trends in the Development of DTH Drilling Tools Abroad
HU Ming;DONG Xin-ye;Secretariat;Drill Steel & Drill Tools Branch Association;China Iron & Steel Association;

..............page:1-5

Forging ahead R&D of Rock-Drilling Tools’ Application Technology and Matching Attachments and Breaking the Bottlenecks during the development of Rock-Drilling Tools
ZHANG Guo-jv;YE Ling-yun;DENG Zhi-zhou;ZHANG Han-bin;ZHOU Ye;Research Institute of Excavation Engineering;China University of Geosciences;Hubie Jiayu Rock Drilling Tools Incorporated Co.;Ltd;Chengdu Tianyuan Powder Carbide Tools Co.;Ltd;

..............page:6-17

Large-Diameter DTH Drill Rig
FAN Zhi-xiou;ZHAO Hong-qiang;CHEN Qian-gen;Sunward Intelligent Equipment Co.;Ltd.;School of Mechanical and Electrical Engineering;Central South University;

..............page:18-20

Double-Boom Tunneling Drill Rig
TAN Rong;CHEN Qian-gen;ZHAO Hong-qiang;Technical Center;Sunward Intelligent Equipment Co.;Ltd.;School of Mechanical and Electrical Engineering;Central South University;

..............page:21-23+61

Structural Improvement of the Radial Drilling Fixture
LI Xian-chun;Technical Center;Tianshui Pneumatic Machinery Co.;Ltd.;

..............page:24-26

Influence of Rare Earth Elements on Properties of Ultra-Coarse Low-Cobalt Cemented Carbide for Mine
LIU Min-feng;SUN Tin-shu;WU Wen-ming;SUN Le-tian;Shandong Ruixin Tungsten Co.;Ltd.;

..............page:27-31

Cause Analysis of the Milling Tooth Fracture of the Road Milling Machine
CHENG Ju-qiang;WANG Xue-jun;SHEN Jing-song;School of Materials and Chemical Engineering;Xi ’an Technological University;Hubei Milalion Metallurgical Machinery Technology Co.;Ltd.;

..............page:32-35

Development of the High-Performance and High-Air Pressure DTH Drilling Bits
YAN Ping;WANG Ming-sheng;Xiamen Golden Egret Special Alloy Co.;Ltd.;

..............page:36-40

Types and Development of the Tapping Machine for Blast Furnace and Drilling Tools
ZHOU Xian-hu;HU Ru-hao;Shougang Guiyang Special Steel Co.;Ltd.;

..............page:41-46

Failure Analysis of MF Drill Rod for Open-Pit Hydraulic Drill Rig
TANG Wen-long;CHEN Jing-wei;LI Jian-lin;Shougang Guiyang Special Steel Co.;Ltd;

..............page:47-52

Application of the Friction Welding Process in Production of the Drill Rod for Hydraulic Drill Rig
ZHANG Yi;YANG Hua-jun;CHEN Jiang;HU Ru-hao;Shougang Guiyang Special Steel Co.;Ltd;

..............page:53-57

Cutter’s Malfunctions and Modification and Installation of the Central Cutter on TB880E
GE Qiang;Jilin Welter Tunnel Equipment Co.;Ltd.;

..............page:58-61

zao yan ji xie qi dong gong ju zheng ding qi shi

..............page:62