陶瓷复合装甲的孔加工及机理  

DRILLING HOLE MECHANISMS OF CERAMIC COMPOSITE ARMORS

作　　者：郑雷[1] 袁军堂[1] 李少华[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《硅酸盐学报》2007年第5期568-573,共6页Journal of The Chinese Ceramic Society

基　　金："十五"国防预研基金(404010502.1C)资助项目

摘　　要：因组成材料的性能相差迥异,陶瓷复合装甲的加工十分困难。根据其组成材料的加工特性,研制了特定组分(结合剂体积分数为:48%Cu,30%Co,6%Ni,5%WC,5%Ti,4%Sn,2%Cr)的青铜基结合剂烧结金刚石套料钻进行孔加工,采用自来水冷却。通过单因素实验,研究了主轴转速以及轴向工作压力对加工效率的影响。按加工机理的不同,钻孔过程可分为3个阶段;研究了钻头的两种打滑现象并初步解释了成因。根据孔口的各种加工缺陷,提出了预压应力钻削法以改善孔口加工质量。结果表明,该加工技术具有实用价值。Due to the great differences in the mechanical characteristics of the materials that compose ceramic composite armor, it is very difficult to machine. Considering the machining properties of these materials, special sintered diamond bits with a broze-based binder were developed. The composition （volume fraction） of the binder was 48% Cu, 30% Co, 6% Ni, 5% WC, 5% Ti, 4% Sn and 2% Cr. Fresh water was used for coolant. Through single factor experiments, the effects of spindle speed and axial thrust on machining efficiency are presented. The drilling process is divided into three phases according to the diverse machining mechanisms. Then, the two kinds of skidding mechanisms of bits were researched. After analyzing the visual defects of the entry and exit of holes machined, drilling with compressive pre-stress to improve the cutting quality was investigated. The achievements resulting from this research are of practical value.

关 键 词：陶瓷复合装甲 烧结金刚石钻头 加工效率 加工机理 加工质量 

分 类 号：TB383[一般工业技术—材料科学与工程] TG713[金属学及工艺—刀具与模具]