钎焊烧结金刚石钻头试验研究  

In-lab micro drill test of brazed diamond bit

作　　者：彭雨 闫海 卜长根[1] PENG Yu;YAN Hai;BU Changgen(Institute of Engineering and Technology,China University of Geosciences（Beijing）,Beijing 100083,China)

机构地区：[1]中国地质大学(北京)工程技术学院,北京100083

出　　处：《金刚石与磨料磨具工程》2018年第5期28-32,共5页Diamond & Abrasives Engineering

摘　　要：为优化钎焊烧结工艺,找到与不同地层相适应的钻头胎体配方,钎焊烧结ф36–7B、ф36–11B微型钻头,通过室内微钻试验以优化钎焊烧结工艺。结果显示:在高温低压的烧结环境下,胎体与金刚石结合良好;添加WC颗粒可以有效提高ф36–11B钻头胎体的耐磨性。The brazed diamond drill has been widely used because of its high lifespan and high efficiency. The geological drilling test requires a lot of manpower and material resources. In order to optimize the brazing and sintering process, the drill matrix formulations compatible with different strata are studied. Ф36-7B, Ф36-11B micro drills are brazed and then tested with in-lab drill to study and optimize the brazing process. Results show that the carcass and diamond are well combined in the high-temperature and low-pressure sintering environment, that Ф36-7B bit has higher drilling efficiency at similar wear per unit, and that the addition of WC particles can effectively improve the wear resistance of the Ф36-11B bit matrix.

关 键 词：微钻试验 电镜分析 研磨性地层 

分 类 号：TQ164[化学工程—高温制品工业] TG74[金属学及工艺—刀具与模具]