Effect of temperature on the performance of PDC cutters with different shape

Authors

ZHANG Suhu, Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China
WANG Chuanliu, Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China
DAI Yongbo, Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China

Abstract

In order to explore the performance of PDC cutters at different temperatures to adapt to different brazing temperatures, and to reasonably select the shape to improve efficiency. Based on the several main parameters affecting the quality of polycrystalline diamond compacts (PDC), such as wear resistance, grinding time, stationarity and impact toughness, the performance of PDC sheets from different manufacturers and different shapes was tested. The performance of PDC before or after heating and at different temperatures was obtained. At the same time, the performance of flat sheets, micro-arcs sheets and arcs sheets was compared. The results show that with the increases of temperature, the wear ratio shows a tendency to decrease. After 750℃, the abrasion ratio of PDC is reduced by about 30%-50%, the grinding time is increased and the footage is slowed down. When the temperature reaches 800℃, the abrasion ratio is less than 100 000 and the impact toughness is below 100 J. The PDC cutters are sensitive to temperature; it can be graded according to the performance at different temperatures to meet the welding temperature. For different shapes of PDC, the flat sheets have a short grinding time and high grinding efficiency, while the micro-arc and the arc sheets have a lower abrasion ratio and longer grinding time, but the impact toughness is greatly increased. Therefore, to improve the quality of PDC bits effectively, the shape of PDC should be chosen reasonably and the use of PDC with different performance in different parts should be considered in the process of manufacturing PDC bit.

Keywords

polycrystalline diamond compacts (PDC), welding temperature, shape, performance

DOI

10.3969/j.issn.10011986.2020.01.033

Recommended Citation

ZHANG Suhu, WANG Chuanliu, DAI Yongbo, et al. (2020) "Effect of temperature on the performance of PDC cutters with different shape," Coal Geology & Exploration: Vol. 48: Iss. 1, Article 34.
DOI: 10.3969/j.issn.10011986.2020.01.033
Available at: https://cge.researchcommons.org/journal/vol48/iss1/34

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