CAJ | 학술논문

采用数值模拟的方法，建立了二维切削齿与岩石互作用数值模拟模型，分析了破岩过程中切削齿与岩石的温度场分布规律。结果表明：切削过程中切削齿上各点温度不同；金刚石层的热影响区大于碳化钨硬质合金基体热影响区；考虑焦耳—汤姆逊冷却效应的气体钻井能为切削齿提供有效的冷却；降低钻井液的温度有利于切削齿的冷却，延长钻头使用寿命。
채용수치모의적방법，건립료이유절삭치여암석호작용수치모의모형，분석료파암과정중절삭치여암석적온도장분포규률。결과표명：절삭과정중절삭치상각점온도불동；금강석층적열영향구대우탄화오경질합금기체열영향구；고필초이—탕모손냉각효응적기체찬정능위절삭치제공유효적냉각；강저찬정액적온도유리우절삭치적냉각，연장찬두사용수명。
Adopt the method of numerical simulation,and establish a two-dimensional numerical simulation model of cutter and rock interaction in the process of rock fragmentation which are analyzed by the temperature field distribution of the rock and cutter.The results show that,the cutting process of cutter on each point temperature is different,the diamond layer of heat affected zone is greater than the tungsten carbide carbide substrate heat affected zone.Considering the effect of Joule-Thomson cooling gas drilling can provide effective cooling cutter,at the same time lower the temperature of the drill-ing fluid for cooling cutter and prolong the service life of drill bit.