异形压装药柱精密成型工艺

Technology of Precise Formation of Heteromorphic Grain by Pressing

为实现某抗过载高能炸药异形药柱精密压制成型,对异形压装药柱成型质量进行研究。对成型模具结构设计、配合间隙设计、应力校核,获得满足尺寸要求的异形药柱成型模具。对某高能炸药开展工艺参数对异形压装药柱成型质量影响研究,获得最佳工艺参数。结果表明:该异形药柱成型模具满足异形压装药柱成型要求,某异形压装药柱成型工艺最佳预热温度为85℃±5℃、比压为1800 kg/cm^(2)、保压时间为900 s,在该条件下,某高能炸药的压药密度能达到2.044 g/cm^(3),达到理论密度的98%,实现了异形压装药柱精密成型。

In order to realize the precisely pressing formation of heteromorphic grain with certain type of anti-overload high explosive,the author performed the mould structure design.Mating clearance design and stress checking,and obtained the heteromorphic grain mould that meets the requirement of dimensions.After the study of process parameters on the forming quality of heteromorphic grain by pressing,the author acquired the optimal parameters.The result shows that,the designed heteromorphic grain mould meets the requirement of formation by pressing,and the optimal preheating temperature for the heteromorphic grain formation by pressing is 85℃±5℃,with the specific pressure of 1800 kg/cm^(2)and the pressure hold time of 900 s.Under this condition,the pressed density of the high explosive can reach 2.044 g/cm^(3),Which equals to 98%of the theoretical density.And the precise pressing formation of heteromorphic grain is realized.