链锁是一种较为常见的安全防护锁具。破坏链锁实施盗窃犯罪,在侵财案件中较为常见。但当前对于断线钳剪切链锁形成的痕迹还缺少专门性的研究。因此,对于链锁剪切痕迹的研究、分析、利用,有其必要性。本文通过对其痕迹的研究,以期掌握此类痕迹的形成、变化规律,对推断工具种类,准确的进行同一认定具有重要意义。 Chain lock is a more common security lock. Damages chain implementation of theft crime, more common in cases of invasion of money. However, there is still a lack of special research on the formation of shearing chain lock by bolt cutters. Therefore, it is necessary to study, analyze and make use of the traces of chain cutting. In this paper, through the study of its traces, in order to grasp the formation and variation of such traces, it is of great significance to infer the types of tools and accurately identify them identically.