摘要
基于岩石破碎原理分析研究用于钻进坚硬致密岩石的钻头及其性能,设计预合金粉胎体性能以及热压工艺参数。在此基础上,提出使用氧化铝空心球弱化钻头胎体,并对添加粒度尺寸0.3mm、0.6mm、0.9mm和体积分数12%、15%和18%的氧化铝空心球制备的胎体进行耐磨性能试验。结果表明:胎体耐磨性分别降低了9%～31%;当氧化铝空心球粒度尺寸为0.3mm,体积分数为18%时,胎体的耐磨性降幅达到最大的31.25%。
Based on the rock breaking principle,the performance of bits which are used to drill into hard and compact rock is analyzed and studied.The composition and performance of prealloyed powder matrix and the hot pressing process parameters are designed.On this basis,it is proposed to use alumina hollow spheres to weaken the matrix.Tests are implemented by using alumina hollow spheres with 0.3 mm,0.6 mm and 0.9 mm particle size and 12%,15% and 18% volume fraction.It is found that the wear resistance of matrices is decreased by 9% to 31%,respectively.In conclusion,the decrease of matrix wear resistance could be decreased by 31.25%when the particle size of alumina hollow spheres is 0.3 mm and its volume fraction is 18%.
作者
叶宏煜
杨展
谭松成
谢涛
张建伟
YE Hongyu;YANG Zhan;TAN Songcheng;XIE Tao;ZHANG Jianwei(Wuhan Wanbang Laser Diamond Tools Co. ,Ltd. ,Wuhan 430056,China;Mechanical & Electronic Engineering,China University of Geosciences,Wuhan 430074,China)
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2018年第6期44-47,共4页
Diamond & Abrasives Engineering
关键词
氧化铝空心球
耐磨性弱化
预合金粉
alumina hollow sphere
weakened wear resistance
prealloyed powder
