A new diamond bit for extra-hard, compact and nonabrasive rock formation

Abstract

A new impregnated diamond bit was designed to solve the slipping problem when impregnated diamond bit was used for extra-hard, compact, and nonabrasive rock formation. Adding SiC grits into matrix, SiC grits can easily be exfoliated from the surface of the matrix due to weak holding-force with matrix, which made the surface non-smooth. Three Φ36/24 mm laboratorial bits were manufactured to conduct a laboratory drilling test on zirconiacorundum refractory brick. The laboratory drilling test indicates that the abrasive resistance of the bit work layer is proportional to the SiC concentation. The higher the concentration, the weaker the abrasive resistance of matrix. The new impregnated diamond bit was applied to a mining area drilling construction in Jiangxi province, China. Field drilling application indicates that the ROP (rate of penetration) of the new bit is approximately two to three times that of the common bits. Compared with the common bits, the surface of the new bit has typical abrasive wear characteristics, and the metabolic rate of the diamond can be well matched to the wear rate of the matrix.

Keywords

SiC grits / impregnated diamond bit / non-smooth surface / diamond / rock fragmentation mechanism

References

[1] ZhangZ, YangK-hua. Progress of the research on diamond drilling bits for extro-hard, compact and weak-abrasion crock formation [J]. Diamond and Abrasive Engineering, 2003, 113(1): 9-12

[2] ChenY, LiuD-mei. Efficient methods applied in skidding strata with diamond bit and its history cases [J]. Superhard Mater Eng, 2006, 18(2): 16-18

[3] PoliniW, TurchettaS. Test protocol for micro-geometric wear of sintered diamond tools [J]. Wear, 2004, 257(2): 246-256

[4] TanS-c, FangX-h, YangK-hua. A new composite impregnated diamond bit for extra-hard, compact, and nonabrasive rock formation [J]. Journal of Refractory Metals and Hard Materials, 2014, 43(2): 186-192

[5] WiercigrochM, WojewodaJ, KrivtsovA. Dynamics of ultrasonic percussive drilling of hard rocks [J]. J Sound Vib, 2005, 280(4): 49-57

[6] BhatnagarA, KhandelwalM, RaoK. Enhancing diamond drilling performance by the addition of non-ionic polymer to the flushing media [J]. J China Univ MinTechnol: Engl Ed, 2010, 20(3): 43-50

[7] ParkM. ARIX—A major advance in diamond segment design [J]. IDR, 2005, 27(3): 40-42

[8] ZhangS-h, YangK-hua. Research into bit for extra-hard rock [J]. Key Eng Mater, 2001, 34(2): 202-203

[9] GaoKe. Optimization design and test of non-smooth ratio of bionics impregnated diamond bit [J]. Journal of Jinlin University, 2009, 39(1): 721-725

[10] WangC-l, SunY-hong. Experiment and rock fragmentation mechanism of bionic coupling impregnated diamond bit [J]. Journal of Central South University: Science and Technology), 2011, 42(5): 1321-1325

[11] ZhangS-h, LuFan. Designing method about parameters of impregnated diamond bit [J]. Journal of Central South University: Science and Technology, 2004, 35(2): 195-200

[12] YeL-su. Optimization design of diamond parameters for high efficiency diamond impregnated bit [J]. Equip Geotech Eng, 2009, 10(2): 14-19

[13] JiangQ-g, ZhangS-he. Development of new type and high quality impregnated diamond bits [J]. Diamond and Abrasives Engineering, 2008, 6(1): 12-16

[14] GaoC, YuanJ-tang. Efficient drilling of holes in Al2O3 armor ceramic using impregnated diamond bits [J]. J Mater Process Technol, 2011, 211(2): 1719-1728

[15] ZhengLei. Hole drilling in ceramics/Kevlar fiber reinforced plastics double-plate composite armor using diamond core drill [J]. Materials and Design, 2012, 33(4): 12-18

[16] ZhangW-j, YangK-h, DuanL-chen. Impact of WC on diamond bits martix performance with nickel-based brazing material [J]. Mateirals Science and Technology of Powder Metallurgy, 2011, 34(6): 881-885

[17] TanS-c, YangYang. Study of mechanical pefrormanceofiron-based martix for hot-pressed diamond bit [J]. Diamond and Abrasives Engineeirng, 2009, 170(2): 625-629

[18] del VillarM, MuroP, SánchezJ M, IturrizaI, CastroF. Consolidation of diamond tools using Cu-Co-Fe based alloys as metallic binders [J]. Powder Metall, 2001, 44(2): 82-90

[19] DongH-f, LuYang. Structure and tribological properties of Fe-based impregnated diamond abrasive-head prepared by different sintering technology [J]. Mateirals Science and Technology of Powder Metallurgy, 2013, 134(2): 126-129

[20] DaiQ-l, LuoC-ben. Effects of rare earth and sintering temperature on the transverse rupture strength of Fe-based diamond composites [J]. Journal of Mateirals Processing Tecnhology, 2002, 129(2): 427-430

[21] КалннинА Г, YangX HCoring drilling [M], 19971st edWuhan, China Univ Geosci

[22] SunY-hong. Efficient rock fragmentation mechanism analysis of impregnated diamond bionics bit [J]. Journal of Jinlin University, 2008, 24(6): 1015-1019

[23] ZhangS-h, WangTao. Research on concentrical segmented diamond bit [J]. Diamond and Abrasive Engineering, 2004, 23(5): 59-63

[24] GaoC-qiaoMetal tribology [M], 1998, Harbin, Harbin Insitute of Technology Press: 39-42

[25] DongY-zhaoCorrosive wear of metals [M], 1982, Shijiazhuang, Hebei Educational Press: 25-28