高温环境对普通导爆管雷管点火可靠性的影响

Influence of High Temperature on Ignition Reliability of Ordinary Nonel Detonator

采用951-000、112A和Q210 3种粒料拉制普通导爆管,测试不同环境温度条件下的爆速、抗击穿性能,研究不同环境温度下3种粒料拉制的导爆管对钨系、硅系、锑系及硼系延期体的发火可靠性。研究表明:随着温度的升高,3种粒料拉制的导爆管爆速和抗击穿性能均有不同程度下降,其中,951-000的性能优于112A的性能,112A的性能优于Q210的性能。对4类延期体进行发火可靠性测试:温度t≥60℃时,钨系和锑系延期体出现拒爆;t≥70℃时,硼系延期体出现拒爆;t≥80℃时,硅系延期体出现拒爆。且拒爆率均有随着温度升高而增加的趋势。同一类延期体,相同环境温度下,Q210的拒爆率最大,951-000的拒爆率最小。

Detonating tubes were produced by 951-000,112 A and Q210 pellets. Changes of detonation speed and anti wear performance were tested under different temperatures. Ignition reliability of tungsten series,silicon series,antimony series and boron series delay compositions produced by the three pellets were studied at different temperatures. The results show that detonating tubes produced by different pellets have different decrease of detonation velocity and anti wear performance with the increase of temperature. Among them,the superiority of reliability is 951-000,112 A,and Q210 in order. The ignition reliability test was carried out on the four types of delayed bodies： when temperature ≥60 ℃,tungsten and antimony delayed element appeared reject to burst; ≥ 70 ℃,the boron based delay element reject to burst; ≥ 80 ℃,the silicon based delayed element reject to burst. And as the temperature increases,rejection rate increases. For the same type of delay element exposing to the same temperature,rejection rate from large to small is Q210,112 A,951-000.