Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第25卷    第9期    总第198期    2015年9月

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文章编号:1004-0609(2015)-09-2531-06
胎体弱化颗粒材质对WC基孕镶金刚石钻头胎体磨损性能的影响
郭庆清1, 3,王佳亮2,张绍和1, 3

(1. 中南大学地球科学与信息物理学院,长沙 410083;
2. 湖南科技大学海洋矿产资源探采装备与技术湖南省工程实验室,湘潭 411201;
3. 中南大学有色金属成矿预测教育部重点实验室,长沙 410083
)

摘 要: 采用热压烧结法,以WC基混合粉末和 MBD8人造金刚石为原材料,通过改变添加至胎体中的胎体弱化颗粒材质,制备钻进打滑地层用WC基孕镶金刚石钻头,并进行钻进试验。采用室内钻进及SEM扫描电镜分析等手段研究不同胎体弱化颗粒材质对钻头胎体结构、力学性能和摩擦磨损行为的影响。结果表明:粒径小于425 μm的SiC颗粒由于其脆性特性,适当浓度的SiC颗粒能够减少单位面积上金刚石颗粒数,利于唇面比压的提高,进而提高钻头碎岩效率;棕刚玉颗粒的脆性破损断裂的能力较差,无法有效剥落以增加胎体的粗糙度,并促进金刚石的新陈代谢;硬质合金钢丸颗粒由于本身性质导致其无法有效促进金刚石出刃,不宜作为胎体耐磨损性弱化颗粒材质。

 

关键字: 孕镶金刚石钻头;非光滑表面;胎体弱化颗粒;耐磨性

Effects of matrix weaken particle material onmatrix wear resistance of diamond bit based on WC
GUO Qing-qing1, 3, WANG Jia-liang2, ZHANG Shao-he1, 3

1. School of Geoscience and Info-Physics, Central South University, Changsha 410083, China;
2. Hunan Provincial Key Laboratory of Equipment and Technology for Oceanic Mineral Resource,
Hunan University of Science and Technology, Xiangtan 411201, China;
3. Key Laboratory of Non-ferrous Metal Ore Forecast, Ministry of Education,
Central South University, Changsha 410083, China

Abstract:The matrix weaken diamond bit was prepared by hot pressing with choosing different kinds of matrix weaken particle materials. The matrix weaken particle materials influence on matrix structure, mechanical properties, friction and wearcharacteristics was studied by interiordrilling test and SEM. The results show that SiC particle with size less than 425 μm can enhance the drilling efficiency and bit pressure by decreasing the diamond quantity of unit area. Brown Corundum can not promote diamond metabolismrapidly because the ability of brittle fracture is weaker, the cemented carbide shot can not choose as matrix weaken particle material because it can not promote diamond metabolism.

 

Key words: impregnated diamond bit; non-smooth surface; matrix weakening particle; wear resistance

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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