QSZ92式9mm手枪射击弹壳击针痕迹次种类特征的研究  

The study on subclass characteristics of firing pin marks of Model QSZ92 cal.9mm Pistol

作　　者：王晓琳[1] 刘亚勤 白冬寒 马新和[1] 李轶昳[1] 鲍立垠[1] 

机构地区：[1]公安部物证鉴定中心,北京100038 [2]海南省三亚市公安局刑警支队,572000 [3]河北省保定市定兴县公安局,072650

出　　处：《刑事技术》2014年第5期37-40,共4页Forensic Science and Technology

基　　金：中央级公益性科研院所基本科研业务费专项资金计划项目(NO.2011JB010)

摘　　要：目的研究QSZ92式9mm手枪击针在生产加工过程中潜在的次种类特征,以区别于个体特征。方法用超景深体式显微镜对特定工序连续生产加工的10件QSZ92式9mm手枪击针的射击痕迹进行观察比对。结果不同击针形成的击针痕迹痕底特征具有特定性,而痕壁特征中的同心圆状或圆弧状加工痕迹具有相似性,属于次种类特征。结论同一认定过程中不能将击针痕迹中的同心圆状或圆弧状加工痕迹作为个体特征使用。Objective To study the distinction between the subclass characteristics and individual characteristics of firing pin marks for Model QSZ92 cal. 9mm Pistol. Methods Ten consecutively manufactured firing pins of Model QSZ92 cal. 9mm Pistol were tested and the firing pin impressions on cartridge cases were examined and compared. Results Circumferential marks of the firing pin impressions on cartridge cases displayed similarity among ten different firing pins, which belong to a kind of subclass characteristics. Conclusions Circumferential marks of the firing pin impressions should not be wholly reliable for identification of a specific firearm.

关 键 词：次种类特征 击针痕迹 QSZ92式9mm手枪 

分 类 号：D918.91[政治法律—法学]