In-lab micro drill test of brazed diamond bit
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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φ36-7B、φ36-11B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φ36-11B钻头胎体的耐磨性。Abstract: 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. φ36-7B, φ36-11B 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 φ36-7B 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 φ36-11B bit matrix.
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Key words:
- micro drilling test /
- electron microscope analysis /
- lapping stratum
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