玻璃微球基乳化炸药及其在爆炸焊接中的应用

Glass Microsphere Based Emulsion Explosive and Application in Explosive Welding

爆速是爆炸复合的主要参数之一。采用玻璃微球作为敏化剂和稀释剂,研究玻璃微球尺寸、含量对乳化炸药爆速的影响,然后调配爆速为2.230km/s的低爆速乳化炸药,利用铝蜂窝板配置蜂窝结构炸药,进行铝-钢复合板的爆炸焊接。试验结果表明:炸药密度随着玻璃微球含量的增加而减小;小尺寸玻璃微球含量(质量分数)小于2%或者大于35%时,乳化炸药发生拒爆现象;玻璃微球含量大于7%且小于35%时,炸药爆速随着玻璃微球含量的增大而减小。小尺寸(5~100μm)玻璃微球的敏化效果和调节爆速效果比大尺寸(70~200μm)玻璃微球好,铝蜂窝结构炸药用于铝-钢爆炸焊接可以获得良好的结合质量。

Detonation velocity is one of the main parameters in explosive welding where glass microsphere is used as a sensitizer and diluent.In this paper,the effect of the glass microsphere on detonation velocity of emulsion explosive was explored.The honeycomb-structured explosive manufactured using a honeycomb aluminum panel and a low detonation velocity emulsion explosive with the detonation velocity of 2.230 km/s was used to carry out explosive welding of Al-steel clad plate.The results showed that the density of the explosive decreased with the increase of the glass microsphere content.The emulsion explosive misfired when the content of the glass microsphere was less than 2% or greater than 35%.The detonation velocity of the emulsion explosive decreased with the increase of the glass microsphere content when the content of the glass microsphere was greater than 7% and less than 35%.The sensitization effect and detonation velocity adjustment effect of small-size glass microspheres produced a better welding quality than those of large-size glass microspheres.The honeycomb aluminum structured explosive used for Al-steel explosive welding was able to achieve superior bonding quality.