同位素2026，Vol.39Issue(2)：148-157,10.DOI:10.7538/tws.2026.youxian.004
基于皮秒激光形貌数据矩阵码的工业钴源智能标识方法研究
Research on Intelligent Identification Method of Industrial Cobalt Source Based on Picosecond Laser Topography Data Matrix Code
董攀 1张洪建 1孙承伟 1丁晓哲 2段天英2
作者信息
- 1. 中核同兴(浙江)核技术有限公司,北京 100089
- 2. 中国原子能科学研究院,北京 102413
- 折叠
摘要
Abstract
To achieve safe and reliable intelligent supervision throughout the entire life cycle of industrial Cobalt-60 radioactive sources,this study aims to establish a dual marking system with"machine-readable automatic identification as the primary method and human-assisted judgment as the supplementary method."It focuses on solving the core challenge of ensuring the long-term reliability of the machine-readable identifier under extreme environmental conditions.An intelligent marking method based on ultrafast laser direct fabrication of topographic Data Matrix codes on the end plug surface prior to source encapsulation is proposed.A three-stage experimental scheme was adopted:the first stage involved picosecond laser parameter screening on 60 simulated 316L stainless steel samples;the second stage conducted head-to-head environmental tests,including 800℃heat resistance and simulated underwater reading,on six real end plugs;the third stage verified the"zero-damage"effect of the optimal process on material integrity via optical microscopy(OM)and metallographic analysis.A topographic DM code measuring 6.5 mm×6.5 mm with a depth of(80±10)μm was successfully fabricated on an end face of ϕ 11.1 mm.The code quality reached Grade A according to ISO/IEC 29158:2025.The mark withstood an 800℃thermal shock,maintained a 100%automatic reading rate in simulated underwater conditions,and introduced no microcracks while exhibiting an extremely small heat-affected zone.This study constructs a dual marking technical solution centered on a picosecond laser topographic DM code,compatible with traditional human-readable markings.The solution involves machining and verification before encapsulation,ensuring material safety and providing a reliable technical pathway for"physical-identity to digital-twin"supervision of radioactive sources.Furthermore,the established methodological framework lays an evaluation foundation for integrating higher-performance femtosecond laser processes in the future.关键词
工业钴-60放射源/全生命周期监管/皮秒激光/形貌数据矩阵码/直接零件标记Key words
industrial cobalt-60 radioactive source/whole-life-cycle supervision/picosecond laser/topography data matrix code/direct part marking分类
能源科技引用本文复制引用
董攀,张洪建,孙承伟,丁晓哲,段天英..基于皮秒激光形貌数据矩阵码的工业钴源智能标识方法研究[J].同位素,2026,39(2):148-157,10.
