Analysis on the Thermal Stress of Brazed Diamond Bit During Cooling Process

Song, Wei-Juan; Liu, F.B.; Bu, Cong; Zhou, Guantao

doi:10.1016/j.proeng.2014.06.169

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…Hence, when selecting a brazing alloy, the excessive wear caused by the difference in wear rate from diamond must also be considered. Lastly, during the cooling process, due to the difference in thermal expansion coefficient between the diamond and the matrix, the deformation of the two will be inconsistent, which will cause residual stress in the defects of the diamond internal lattice structure such as dislocations, impurities, and holes [38]. Therefore, selecting a metal matrix with a thermal expansion coefficient similar to the diamond during brazing is also crucial in ensuring the quality of brazed diamond tools.…”

Section: Elementsmentioning

confidence: 99%

Quality Evaluation System of Monolayer Brazed Diamond Tools: A Brief Review

et al. 2023

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In this article, the studies undertaken on brazed diamond tools were reviewed. The influences of the brazing alloys with different active elements on the brazing quality of brazed diamond tools are emphatically discussed. The differences in the micromorphology, friction and wear properties, and mechanical properties of brazed diamonds caused by three different brazing alloys are described in detail. The quality evaluation of brazed diamond tools is discussed from several aspects, such as the difference in microstructure of the diamond/brazing alloy interface, the friction and wear of brazed diamond tools, and the strength and residual stress of the brazing interface. Finally, relevant open questions related to the brazed diamond tools’ performance are outlined, and the future has been prospected.

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Section: Elementsmentioning

confidence: 99%

Quality Evaluation System of Monolayer Brazed Diamond Tools: A Brief Review

et al. 2023

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“…Additionally, plated diamond bit plays an increasingly important role in civil, geology, petroleum, construction and other industrial applications. Some researches and enterprises now pay close attention by advantages of plated diamond bit such as high bonding strength, high grit protrusion and large space for chip [30][31][32][33]. An experimental analysis for thrust forces associated with the various diamond grits and drilling parameters using step core-ball drill in drilling of composite materials was investigated in the present study.…”

Section: Introductionmentioning

confidence: 99%

The effect of thrust force in drilling composite materials using step core-ball drill

Teng

Tsao

2018

MATEC Web Conf.

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Abstract.Composite materials have gained increasing popularity over the past few decades due to their superior mechanical properties, such as high strength-to-weight ratio, fighting against high temperature and corrosion resistance. The assembly of enormous aeronautical components and structures require the machining of composite materials. Drilling is the most important hole-making process in the final assembly. When drilling composite materials, a number of defects are generating. Delamination caused by drilling thrust has been showed as one of the most problematic defects after drilling composite laminates. With a pressing need for decreased delamination, many studies are turning more and more toward tool geometry and machining parameters. Drilling of composite plates using a step core-ball drill, which is a special drill to improve the chip flow and reduces the thrust force at the exit of hole, is investigated in this study. The experimental results found that the step core-ball drill was efficient in drilling of carbon fiber reinforced plastic (CFRP) and did not produce loading on the drill exit at the proper drilling conditions. The results obtained from this study feeding back for fundamental research efforts could steer future studies on the drilling composite materials in the most promising direction.

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Analysis on the Thermal Stress of Brazed Diamond Bit During Cooling Process

Cited by 2 publications

References 1 publication

Quality Evaluation System of Monolayer Brazed Diamond Tools: A Brief Review

Quality Evaluation System of Monolayer Brazed Diamond Tools: A Brief Review

The effect of thrust force in drilling composite materials using step core-ball drill

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