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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.A: Fluid-Structure Interaction >Hot Explosive Compaction of Hard Powders using Cylindrical Configuration
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Hot Explosive Compaction of Hard Powders using Cylindrical Configuration

机译：圆柱结构对硬粉的热爆炸压实

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We tried hot explosive compaction to make bulk materials of hard-to-consolidate powders using cylindrical configuration. By heating above 1000℃, it is possible to give the ability of plastic deformation for hard ceramic powders and also possible to enhance the surface melting to bond each particle. Using the cylindrical configuration, hot explosive compaction experiment was carried out for consolidation of TiB_2 powders at elevated temperature. A central hole and a melting spot at the end of the tube were observed for a sample recovered. High compaction density and high hardness (above 3000 VHN highest) were measured for the samples recovered. The central hole and the melting spot are considered to be generated by the formation of mach stem at the center and the high-velocity collision towards the end plug. Numerical simulation was carried out using AUTODYN-2D code and compared with the experimental results for the T1B_2 compacts.
机译：我们尝试使用热爆炸压实法，以圆柱形构造制造难以固结的粉末状散装物料。通过加热到1000℃以上，可以赋予硬质陶瓷粉末以塑性变形的能力，并且还可以增强表面熔化以粘结每个颗粒。使用圆柱形结构，进行了热炸药压实实验，以在高温下固结TiB_2粉末。对于回收的样品，观察到管孔的中心孔和熔点。对回收的样品进行了高压实密度和高硬度（最高3000 VHN以上）测量。中心孔和熔点被认为是由于在中心形成马赫形杆和朝向端塞的高速碰撞而产生的。使用AUTODYN-2D代码进行了数值模拟，并与T1B_2压块的实验结果进行了比较。

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