Segment Matrix Design and Drilling Test of Diamond Bit for Sapphire
This paper introduces the characteristics of sapphire and sapphire digging bits in LED field.The segment matrix design principle of bit and the rule of diamond selection are put forward.In addition,this paper analyzes the function of different metal powders and diamond parameters in the segment matrix.The results show that the finer grained(for example 80/100 mesh)diamond should be used with the concentrations of 30-60%.In the segment matrix,tin element can make the matrix more brittle and then the bit is sharper.Copper,silver and nickel element can enhance the matrix toughness and strength,cobalt and tungsten element can increase abrasive resistance.All of the above designs enable the sapphire bit to high sharpness and long life.A 4-inch sapphire bit was prepared for drilling sapphire crystal,the efficiency is increased by 8%than the Taiwan drill bit with the same specifications,the life is equal to Taiwans drill bit,and the defect rate of sapphire bar is less than 0.5%,which satisfies the requirement of customers.
Matrix design Metal powder Sapphire bit Diamond Drilling test
Xu Liang Liu Yibo Xu Qiang
Beijing Gangyan Diamond Products Company,29 Chuangxin Road,Beijing 102200,China
国际会议
北京
英文
1054-1058
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）