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含能材料  2014 

高压水射流切割发射药模型及实验研究

DOI: 10.3969/j.issn.1006-9941.2014.02.024

Keywords: 物理化学,发射药,水射流,燃烧性能,模型

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Abstract:

针对硝基胍发射药制备切药过程中存在易堵孔、变形等问题,设计了高压水射流切割系统装置,建立了射流切割硝基胍发射药过程的力学模型,研究了射流切割工艺,分析了切割过程的安全性,并通过密闭爆发器实验研究了射流切割发射药的燃烧性能。结果表明,射流切割的深度与切割速度、发射药的强度成反比,射流切割靶距越大,切缝越宽,试验结果与理论分析一致;磨料水射流适用于切割驱溶与未驱溶发射药,而纯水射流只适用于切割未驱溶发射药;硝基胍发射药在切割过程中的温度升高最高温度为60℃,远低于其初始热分解温度178.1℃;射流切割发射药的定容燃烧性能与手工切割的一致。

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