PBX炸药切削表面粗糙度评定及影响因素

考虑到炸药件表面微观结构影响其使用性能,零件的测量精度和武器部件的使用可靠性,测量了压装高聚物粘接炸药(PBX)车削表面的三维表面微结构,评定和分析了其二维和三维表面粗糙度.结果表明:三维表面粗糙度适合评定具有随机分布的崩落、坑窝缺陷的PBX的切削表面.三维参数评定优于二维参数评定.在相同切削参数下,圆形刀比菱形刀车削的表面粗糙度小得多.切削进给量极大地影响表面粗糙度,而切削速度对表面粗糙度影响不明显.

Evaluation of Cutting Surface Roughness of PBX Explosive and Its Influentce Factors

The surface micro-structure of an explosive part affects its performance, measured precision of the part, and reliability of the weapon parts. The 3D surface micro-structure of the pressed PBX lathed surfaces was detected. The 3D and 2D surface roughness parameters were evaluated and analyzed. The results show that 3D surface roughness parameter is suitable for evaluating PBX machined surface with random distribution caving and pits defects. The 3D surface roughness parameter evaluation is better than that of 2D surface roughness parameter. Under the same evaluating parameters, PBX 3D surface roughness using round tool is much less than that using standard tool. The feed affects surface roughness greatly, while the spindle speed affects surface very little.