金刚石与磨料磨具工程2011，Vol.31Issue(2)：55-57,61,4.DOI:10.3969/j.issn.1006-852X.2011.02.012
PDC钻头焊接工艺的研究
Study on the welding technology of polycrystailine diamond compact bit
摘要
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.关键词
PDC钻头/焊接工艺/焊接强度Key words
PDC bit/ welding technology/ welding strength分类
矿业与冶金引用本文复制引用
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):55-57,61,4.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"(编号:2008ZX05041-002-001) （编号:2008ZX05041-002-001）
