Experimental Study of the Interlayer Effect in Impregnated Diamond Blocks on ROP and Wear Extent
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摘要: 为指导孕镶金刚石钻头和岩石锯等的夹层结构的设计,设计了4组孕镶体的外形结构及夹层结构,研制了可装卸孕镶体的试验小钻头,进行了孕镶体夹层对钻速和磨损量影响的试验。通过观察试验现象和分析试验数据发现:孕镶体的夹层结构有利于提高钻头的稳定性;影响孕镶体钻速的主要因素有夹层的厚度、夹层的形状、夹层的厚度比和夹层金刚石的质量分数;增大夹层间金刚石质量分数的差可以提高钻速;适当增大非工作层的厚度利于提高钻速;影响孕镶体磨损的主要因素有夹层的厚度、夹层的厚度比、夹层的类型及夹层金刚石的质量分数;孕镶体磨损面的沟槽越突出则磨损量越大。这对孕镶金刚石钻头和岩石锯等的夹层结构设计有指导作用。Abstract: In order to instruct the design of interlayer of impregnated diamond bits and rock saws,the authors designed 4 kinds of shape and interlayer structure impregnated diamond blocks,developed and made the bit for experiment which can load and unload impregnated diamond blocks,and unfolded the experiment to study effect of the interlayer on ROP and wear extent.The phenomena and data of experiment showed:the interlayer is in favor of the improvement of bit stability.Main effect factors of ROP of impregnated diamond blocks are the thickness of interlayer,interlayer structure and shape,and proportion of the interlayer thickness,and mass fraction of diamond in interlayer.Penetration could be accelerated with the increase of the difference of diamond mass fraction between interlayers.Increasing properly of the thickness ratio of non-work interlayer is favor of promoting ROP.Main effect factors of wear extent of impregnated diamond blocks are thickness of interlayer,proportion of the interlayer thickness,and interlayer type and its diamond mass fraction.The more prominent the groove of wearing face is,the more wear extent is.
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Keywords:
- impregnated diamond bits /
- interlayer /
- penetration rate /
- wear
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[1] 蒋青光,张绍和,陈平,等.新型优质孕镶金刚石钻头研制[J].金刚石与磨料磨具工程,2008(6):12-16. Jiang Qingguang,Zhang Shaohe,Chen Ping,et al.Development of new type and high quality impregnated diamond bits[J].Diamond Abrasives Engineering,2008(6):12-16. [2] 陈章文.适合金川矿区的特种孕镶金刚石钻头研制.长沙:中南大学,2008. Chen Zhangwen.Development of the special impregnated diamond bits for Jinchuan Mine.Changsha:Central South University,2008. [3] 刘碧湘.分层式孕镶金刚石钻头:中国,02279738.6.2003-10-15. Liu Bixiang.Interlayer impregnated diamond bits:China,02279738.6 .2003-10-15. [4] 叶宏煜,谢涛,杨仙.多层定向分布有序排列金刚石工具节块:中国,200720084656.1.2008-02-27. Ye Hongyu,Xie Tao,Yang Xian.Multi-interlayer directional and ordered arranging diamond tool block:China,200720084656.1 .2008-02-27. [5] 陈庭根,管志川.钻井工程理论与技术[M].东营:石油大学出版社,2001. Chen Tinggen,Guan Zhichuan.Theory and technology of drilling engineering[M].Dongying:Petroleum University Press,2001. [6] Glowka D A.Implication of thermal wear phenomena for PDC bit design and operation.SPE 14222,1982.
[7] Glowka D A.The use of single-cutter data in the analysis of PDC bit designs.SPE 15619,1986.
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