Research on Fe-based impregnated diamond drill bits strengthened by Nano-NbC and Nano-WC

Ekene Matthew Egwuonwu, Uzodigwe Emmanuel Nnanwuba, CHANG Si, DUAN Longchen, NING Fulong and LIU Baochang

Global Geology ›› 2023, Vol. 26 ›› Issue (1) : 21-30.

PDF(1183 KB)
PDF(1183 KB)
Global Geology ›› 2023, Vol. 26 ›› Issue (1) : 21-30.

 Research on Fe-based impregnated diamond drill bits strengthened by Nano-NbC and Nano-WC

  •  Ekene Matthew Egwuonwu1, 2, Uzodigwe Emmanuel Nnanwuba1, 2, CHANG Si1, 2, DUAN Longchen3, 4, NING Fulong3, 4 and LIU Baochang1, 2, 4*
Author information +
History +

Abstract

  In order to improve the matrix performance of impregnated diamond drill bit to better meet the drilling needs, the effects of the addition of nano-WC and nano-NbC particles on the matrix material together with the mechanical properties and microstructure of the diamond-matrix composite material of the Fe-based diamond drill bit were studied by using the method of uniform formula design, regression analysis and solution finding. An indoor drilling test was also carried out using the fabricated impregnated diamond drill bit. The results showed that after the addition of nano-NbC and nano-WC, the hardness and flexural strength of the matrix material got improved, as the flexural strength of the diamond composite material increased to 4.29%, the wear-resistance ratio increased to 8.75%, and the tighter the chemical bonding between the diamond and the matrix. This, indicates that the addition of nanoparticles has a positive significance in improving the performance of the diamond composite. The results of the drilling test showed that the mechanical drilling speed of the impregnated diamond drill bit after nanoparticle strengthening is 25.85% higher than that of the conventional drill bit, and the matrix wear was increased by 17.5%. It proves that nanoparticles can improve the drilling performance and efficiency of drill bit.

Key words

 Nanoparticles / uniform formulation design / diffusion strengthening / impregnated diamond drill bits

Cite this article

Download Citations
Ekene Matthew Egwuonwu, Uzodigwe Emmanuel Nnanwuba, CHANG Si, DUAN Longchen, NING Fulong and LIU Baochang.  Research on Fe-based impregnated diamond drill bits strengthened by Nano-NbC and Nano-WC[J]. Global Geology. 2023, 26(1): 21-30
PDF(1183 KB)

Accesses

Citation

Detail

Sections
Recommended

/