Fe质量分数对金刚石钻头胎体及钻进性能的影响研究  

Effect of Fe mass fraction on diamond bit′s matrix and drilling properties

作　　者：潘晓毅[1,2,3] 苏钰[1,2,3] 谢德龙[1,2,3] 林峰[1,2,3] 肖乐银[1,2,3] 陈超[1,2,3] 秦建新[1,2,3] 彭少波[1,2,3] 陈家荣[1,2,3] 

机构地区：[1]广西超硬材料重点实验室,桂林541004 [2]国家特种矿物材料工程技术研究中心,桂林541004 [3]中国有色桂林矿产地质研究院有限公司,桂林541004

出　　处：《金刚石与磨料磨具工程》2017年第2期16-19,25,共5页Diamond & Abrasives Engineering

基　　金：桂林科学研究与技术开发计划项目(项目编号:20150105-1)

摘　　要：设计Fe-Cu基胎体配方,研究Fe质量分数对金刚石钻头胎体及钻进性能影响。测试不同配方下烧结试样的硬度、相对密度与三点抗弯强度,使用扫描电镜对断口进行微观分析,通过模拟钻进实验测试钻头的钻进效率与寿命。结果表明:Fe-Cu基配方胎体具有较好的烧结成型性,胎体相对密度可达到理论密度的98%;胎体硬度随Fe质量分数的增加先增加后下降,在Fe质量分数大于45%时趋于平稳、质量分数为60%时达到最大值,为35HRC;胎体三点抗弯强度的变化规律不明显,数值变化不大。断口SEM结果表明:随Fe质量分数增加,韧性下降,金刚石刻蚀加重。模拟钻进实验表明:在Fe质量分数为30%时,钻头对6~8级可钻性地层具有较好的钻进效率与寿命。Fe-Cu matrix formulas were designed to drill bit＇s matrix and drilling properties. Hardness different formulas＇ sintered samples were analyzed research the effect of Fe mass fraction on diamond relative density and three-point bending strength of The fracture appearances of these sintered samples were investigated by SEM. The drilling efficiency and service life of different formulas＇ drill bits were analyzed by drilling simulations. The results show that each formula＇s sample can be well sintered, and that their relative density can reach up to more than 98~ of theoretical density. The hardness increases first, and then decreases while Fe mass fraction increases. The hardness tends to be steady when the mass fraction of Fe increases to more than 45~~00, and it reaches the maximum as 35HF4C at 600/o Fe. The three-point bending strength result shows that it does not change obviously hut in a small range. The fracture appearance SEM shows that the toughness decreases and the diamond etching effect aggravales while Fe mass fraction increases. Drilling simulations show that the 30~ Fe formula sample perform better, both in drilling efficiency and service life, when drilling 6 to 8 level drill ability stratum.

关 键 词：配方设计 金刚石钻头 力学性能 断口形貌 钻进性能 

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]