Effects of hard abrasive particles on matrix wear resistance of diamond impregnated bit

被引：0
|
作者：
Wang J.-L. [1 ]
Zhang S.-H. [2 ]
机构：
[1] National Local Joint Engineering Laboratory of Marine Mineral Resources Exploration Equipment and Safety Technology, Hunan University of Science and Technology, Xiangtan
[2] Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Changsha
来源：
Wang, Jia-Liang (40850979@qq.com) | 1872年 / Central South University of Technology卷 / 27期
基金：
中国国家自然科学基金;
关键词：
Impregnated diamond bit; Particle for weakening matrix; Rock fragmentation mechanism; Weakening matrix; Wear resistance;
D O I：
10.19476/j.ysxb.1004.0609.2017.09.15
中图分类号：
学科分类号：
摘要：
Based on drilling efficiency decrease when diamond bit drilling extra-hard and strong-abrasive rocks, brown corundum, SiC and cemented carbide shot particle were taken as matrix weaken elements and put into matrix. The matrix weaken particle materials influences on matrix structure, friction and wear characteristics were studied by interior drilling test and SEM. The result show that matrix weaken particle can enhance drilling efficiency and avoiding drilling slipping. SiC particle can remarkable influence wear-resisting and bending strength of matrix, the suitable concentration is 20%-40%, grain size is 425-500 μm. The main effect of hard abrasive particles in matrix is improve the micro wear morphology for diamond exposure by brittle characteristics and sharpening diamond by hard characteristics. © 2017, Science Press. All right reserved.
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页码：1872 / 1878
页数：6
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