工业电子雷管卡口部位防水性能研究
基金项目:
中国兵器民品开发费项目：无线电子起爆系统关键技术研究与应用（JM2022030）。
Research on Waterproof Performance of the Crimping Position of Industrial Electronic Detonators
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摘要:为了解决工业电子雷管在含水炮孔的短路、半爆问题，通过高压水罐对电子雷管进行了浸水试验，同时探究了卡印状态、卡口尺寸和雷管管壳厚度对电子雷管防水性能的影响。研究发现：卡口卡印处的褶皱是引起电子雷管进水的主要原因，进水后会出现短路和半爆情况。在自动化产线对卡头瓣状直径进行了优化，消除了卡印褶皱，优化后的电子雷管产品防水性能良好，满足50 m水深、72 h的抗水性能要求；并且，当使用厚度为0.40 mm、卡口尺寸为5.60 mm的铁质管壳时，有助于提高卡口稳定性，同时减少了人工剔除不良品的安全隐患，有助于实现“人机隔离 机器换人 黑灯工厂”的安全生产模式。
Abstract:In order to solve the problems of short circuit and half explosion of industrial electronic detonators in water-bearing blast hole, the immersion test was conducted on electronic detonators by using a high-pressure water tank. At the same time, the influence of crimping status, crimping size, and detonator shell thickness on the waterproof performance of electronic detonators was explored. The study found that the crimping wrinkle is the main reason for water ingress in electronic detonators, which can lead to short circuit and half explosion. By optimizing the diameter at the petal shape of the crimped head in automated production line, the crimping wrinkles have been eliminated. The optimized electronic detonator products have good waterproof performance, meeting the requirements of 50 meters and 72 hours for water resistance. And by use of an iron tube shell with a thickness of 0.40 millimeters and a crimping size of 5.60 millimeters, the stability of the crimping operation could be improved. At the same time, it reduces the safety hazards of manually removing defective products, which helps to realize the safe production mode of unmanned factory.
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