摘要
采用FeCuCo基结合剂为原料和优化的制作工艺,以金刚石参数设计理论为依据,根据被切割石材的基本特征,制作出了金刚石绳锯进行石材矿山切割实验,研究绳锯线速度Vs对FeCuCo基结合剂金刚石绳锯锯切性能的影响规律。研究结果表明:不同线速度时,随着锯切的进行和串珠直径的逐渐消耗,绳锯锯切效率逐渐提高,而工具理论寿命逐渐降低;随着锯切线速度的增加,绳锯串珠表面单颗金刚石平均切削厚度hc值呈逐渐减小的趋势;随着锯切线速度降低,绳锯串珠表面完整态金刚石出刃高度平均值呈逐渐升高的趋势,且锯切线速度越小,绳锯串珠表面金刚石出刃高度越大;随着锯切线速度的提高,岩屑D50粒度呈现逐渐降低的趋势,且明显远大于单颗金刚石平均切削厚度hc值,这是由于金刚石颗粒的切削机理属于有裂纹扩展的“体积破碎”方式产生的。
FeCuCo based matrix and the optimized fabrication process are used,based on the theory of diamond parameter design,according to the basic characteristics of the stone being cut,diamond wire saw is fabricated for mining stone cutting test in order to study the effect of wire saw line speed Vson the performance of diamond wire saw with FeCuCo based matrix.The study result shows thatat different line speeds,the sawing efficiency of wire saw gradually increases as the sawing is in the progress and the bead diameter is gradually consumed.And the theoretical life of the tool gradually decreases.With the increase of sawing speed,hcvalue of average cutting thickness of single diamond on the surface of wire saw bead shows a gradually decreasing trend.As the sawing speed decreases,the average value of diamond out edge height on the surface of wire saw bead intact shows a gradually increasing trend.The smaller the line speed is,the greater the diamond out blade height is on the surface of wire saw bead.The rock chip D50 grain size shows a gradually decreasing trend with the line speed increasing,which is obviously much larger than the single diamond average cutting thickness hcvalue.It results from the fact that the cutting mechanism of diamond particles belongs to the"volume crushing"way with crack propagation.
作者
刘志环
于盛睿
廖才超
娄晶
陈浚阳
翟振鑫
LIU Zhihuan;YU Shengrui;LIAO Caichao;LOU Jing;CHEN Junyang;ZHAI Zhenxin(School of Mechanical and Electronic Engineering,Jingdezhen Ceramic University,Jingdezhen 333403,China;Jiangxi Zhongli Superhard Material Tools Co.,Ltd.,Shangrao 333100,China)
出处
《超硬材料工程》
CAS
2022年第6期1-8,共8页
Superhard Material Engineering
基金
江西省教育厅科技项目(GJJ201327)
江西省教育厅科技项目(GJJ211323)
江西省重点研发计划(20192BBE50032)
国家自然科学基金(52065029,51741505)
江西省自然科学基金(20212ACB204013,20202BABL204038)
景德镇科技局项目(20212GYZD009-08)。
关键词
FeCoCu
金刚石绳锯
锯切线速度
切削厚度
出刃高度
FeCoCu pre-alloyed powder
diamond wire saw
sawing line speed
cutting thickness
diamond blade height
