| PDC钻头焊接工艺的研究 |
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| 引用本文： | 谢北萍,彭忠瑛,杨道合.PDC钻头焊接工艺的研究[J].金刚石与磨料磨具工程,2011,31(2):55-57,61. |
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| 作者姓名： | 谢北萍 彭忠瑛 杨道合 |
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| 作者单位： | 1. 煤炭科学研究总院重庆研究院,重庆,400037
2. 中国地质大学工程学院,武汉,430074 |
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| 基金项目： | 国家重大专项"煤矿区煤层高效抽采、集输技术与装备研制" |
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| 摘 要： | 聚晶金刚石复合片(PDC)钻头钻进的岩层越来越复杂,在复杂地层及硬岩钻进中时有掉齿、崩刃等现象发生,造成钻头失效.研究表明,焊接工艺是影响PDC钻头的最主要原因.本文以φ94 mm三翼内凹式PDC钻头体为试验样品,对影响PDC钻头焊接质量的主要因素进行了分析,研发出一种新的PDC钻头焊接工艺.试验结果表明:采用该工艺制...
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| 关 键 词： | PDC钻头 焊接工艺 焊接强度 |
Study on the welding technology of polycrystalline diamond compact bit |
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| Xie Beiping,Peng Zhongying,Yang Daohe.Study on the welding technology of polycrystalline diamond compact bit[J].Diamond & Abrasives Engineering,2011,31(2):55-57,61. |
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| Authors: | Xie Beiping Peng Zhongying Yang Daohe |
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| Affiliation: | Xie Beiping Peng Zhongying Yang Daohe (1.Chongqing Branch of Chinese Coal Research Institute,Chongqing 400037,China)(2.Faculty of Engineering,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | During the application of polycrystalline diamond compact（PDC） bit in the drilling of rock stratum which are more and more complex,teeth dropping and chipping occur now and then,as a result the life of PDC bit is reduced.In this work,samples of diameter 94 mm inner sunken PDC bit with three wings were prepared and tested,the major influencing factors on the welding quality were studied.A new kind of welding technology for PDC bit was developed.The test results showed that the PDC bits manufactured on the basis of the new welding technology had a lot of advantages,such as high welding strength,strong wear resistance and good impact resistance.No teeth dropping nor chipping was observed after drilling 13 holes.A footage of 10 000 m was realized before the bit got failed.The drilling efficiency was 60 m/h,the working life was about 1.5 times longer than that of the same type of bit. |
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| Keywords: | PDC bit welding technology welding strength |
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