CVD金刚石条强化孕镶金刚石钻头的试验研究  

Experimental study of diamond impregnated drilling bit enhanced with CVD diamond pins

作　　者：刘宝昌[1,2] 孙友宏[1] 佟金[2] 王秋雯[1] 王传留[1] 马银龙[1] 

机构地区：[1]吉林大学建设工程学院,长春130026 [2]吉林大学工程仿生教育部重点实验室,长春130025

出　　处：《金刚石与磨料磨具工程》2009年第6期24-27,共4页Diamond & Abrasives Engineering

基　　金：863项目"硬岩钻进用仿生金刚石复合钻头及钻进工艺研究"(2006AA06Z221);863重点项目"2000m地质岩心钻探关键技术与装备"子课题-"长寿命仿生金刚石取心钻头研制"(2007AA060701)

摘　　要：本文将经过激光切割的CVD金刚石条镶嵌到传统的孕镶金刚石钻头胎体中,研制了一种新型的硬支点强化型金刚石钻头,以提高钻头在坚硬地层中的钻进效率和使用寿命。介绍了该新型钻头的设计及制造工艺,并进行了室内钻进试验。结果表明:与聚晶金刚石柱强化孕镶金刚石钻头相比,CVD金刚石条强化的孕镶金刚石钻头的钻进效率较高,达5.575m/h,且该钻头的磨损程度更小,使用寿命长。在钻进过程中更加稳定。In order to improve the drilling efficiency and working life of the bit, when drilling hard rock formations, a new type of diamond impregnated drilling bit enhanced with CVD diamond pins was designed and manufactured. The design and manufacturing process of the bit were introduced. Laboratory drilling tests with two types of diamond bits were conducted and compared. The results indicated that the bit enhanced with CVD diamond pins obtained higher drilling efficiency （up to 5. 575 m/h） , little wear and longer service life. In addition, with the concentric edge design of the bit, the drilling process goes more steadily.

关 键 词：CVD金刚石条 孕镶金刚石钻头 热压烧结 钻进试验 

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