| 关于提高金刚石钻头胎体耐磨性的试验研究 |
| 投稿时间：2015-10-26 修订日期：2015-10-26 点此下载全文 |
| 引用本文：汤凤林,彭莉,Чихоткин В.Ф.,等.关于提高金刚石钻头胎体耐磨性的试验研究[J].钻探工程,2016,43(1):7-13.TANG Feng-lin,PENG Li,CHIKHOTKIN V.F.,et al. Experimental Research on Matrix Wear Resistance (Matrix Hardness) of Impregnated Diamond Bit[J]. Drilling Engineering, 2016,43(1):7-13. |
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| 基金项目:江苏省江苏双创团队资助项目（编号：苏人才办\[2014\]）27号） |
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| 中文摘要:胎体耐磨性（胎体硬度）是金刚石钻头的一个重要技术指标，它直接影响钻头、钻进规程参数的选择和钻探工程技术指标的提高。目前，现场所用钻头实际胎体硬度低于出厂钻头的标称硬度，而钻探施工一般按胎体标称硬度进行安排生产，所以会对钻探效率和进尺的提高带来误导和负面影响。为了提高钻头胎体硬度，进行了如下研究工作：改进钻头烧结工艺，提高胎体材料中碳化钨的比例和增加混料时间。在改进钻头烧结工艺中，建议讨论研究俄罗斯冷压烧结技术，其烧结压力可以达到70～100 MPa，远远高于我国热压烧结的压力，这将有利于胎体耐磨性的提高和钻探技术经济指标的改善。 |
| 中文关键词:胎体耐磨性 钻头烧结工艺 碳化钨比例 混料时间 冷压烧结钻头 钻探技术经济指标 |
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| Experimental Research on Matrix Wear Resistance (Matrix Hardness) of Impregnated Diamond Bit |
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| Abstract:Matrix wear resistance (matrix hardness) is an important technical specification of diamond bit, which has direct influence on choice of bit to be used and drilling practice parameters and the improvement of technical and economical indexes of drilling. At present, real matrix hardness of bits applied in drilling engineering is lower than the nominal hardness of the factory bits that has misleading and negative influence on drilling efficiency and bit footage. In order to improve matrix wear resistance, researches were carried out on the improvement of hot pressing sintering technology, increasing the proportion of tungsten carbide in matrix materials and the mixing time of matrix materials. It is suggested that for the improvement of hot pressing sintering technology, Russian cold pressing sintering technology, with sintering pressure of 70～100MPa, should be discussed, which is much higher than the pressure of hot pressing sintering in China. |
| keywords:matrix wear resistance diamond bit sintering process proportion of tungsten carbides mixing time of matrix materials cold pressing sintering bit technical and economical indexes of drilling engineering |
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