熔铸炸药加压凝固过程研究  

Pressured Solidification Process of Melt-cast Explosive

作　　者：黄勇[1] 郑保辉[1] 谢志毅[2] 王冬磊[1] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621900 [2]中国工程物理研究院计算机应用研究所,四川绵阳621900

出　　处：《含能材料》2013年第1期25-29,共5页Chinese Journal of Energetic Materials

基　　金：中国工程物理研究院科学技术发展基金(2009B0203015)

摘　　要：自主设计了熔铸炸药加压凝固过程实验装置,研究了0.6 MPa外加压力条件和常压条件下RDX/TNT 60/40及硝酸钡/微晶蜡60/40凝固过程中不同位置温度变化及冷却速率。常压条件下RDX/TNT 60/40凝固点为77℃,0.6 MPa外加压力条件下凝固点为83℃,加压条件下相转移点温度升高,各测试点冷却速率高于常压条件,整体凝固时间缩短50 min。硝酸钡/微晶蜡60/40凝固过程中没有相变点,0.6 MPa外加压力条件下冷却速率高于常压条件。RDX/TNT 60/40浇注效果表明,加压凝固成型工艺能有效消除熔铸炸药药柱的缩孔缺陷。Multi-channel data acquisition instrument of pressured solidification process was designed. The solidification process,change of temperature field and cooling velocity of RDX/TNT 60/40 and Ba（ NO3 ）2/microcrystalline wax 60/40 were studied under adscititious pressure and atmospheric pressure respectively. The freezing point of RDX/TNT 60/40 is 83 ℃ under 0.6 MPa and 77 ℃ under atmospheric pressure. Both temperature of phase transformation and cooling velocity of various monitoring point under 0.6 MPa pressure are higher than that under atmospheric pressure,and the entire solidification process is shortened. For the experiment of Ba（ NO3 ）2/micro- crystalline wax 60/40,there is no obvious temperature of phase transformation under 0.6 MPa pressure and atmospheric pressure,and the cooling velocity under pressured condition is higher than that under atmospheric pressure. The pouring of RDX/TNT 60/40 show that the shrinkage defects of melt-cast explosive grain can be avoided effectively using pressured cooling technique.

关 键 词：物理化学 熔铸炸药 加压凝固 温度场 相变 装药缺陷 

分 类 号：TJ410.52[兵器科学与技术—火炮、自动武器与弹药工程]