CAJ | 학술논문

对 PDC 钻头失效切削齿进行宏、微观形貌观察，研究其失效原因和失效机理，并提出相应改善措施。结果表明：PDC 钻头切削齿的主要失效形式为齿的断裂、磨损和脱落；切削齿失效的主要原因是由于冲击刮削破岩对切削齿造成的损伤和切削齿材料本身的性能较差、两相结合强度不高。可从材料配方、结构设计及制造等方面进行改进。
대 PDC 찬두실효절삭치진행굉、미관형모관찰，연구기실효원인화실효궤리，병제출상응개선조시。결과표명：PDC 찬두절삭치적주요실효형식위치적단렬、마손화탈락；절삭치실효적주요원인시유우충격괄삭파암대절삭치조성적손상화절삭치재료본신적성능교차、량상결합강도불고。가종재료배방、결구설계급제조등방면진행개진。
PDC cutter failure to carry out formal was analyzed,and failure causes and failure mech-anisms were studied,corresponding improvement measures.The results showed that the main fail-ure mode of PDC cutter for breaking teeth,wear and shedding.The main reason for the failure of cutting teeth on the one hand scraping rock breaking due to impact damage caused by the cutting teeth;the other is due to the performance of the cutting teeth of the material itself is not strong, two-phase bonding strength is not high.Measures can be taken from the material formulation, structural design and the use of manufacturing.