高聚物黏结粉末橡胶等静压净成型技术

摘要

The polymer-bonded powder was shaped by rubber isostatic pressing (RIP). The effects of process parameters of RIP on the properties of compact were studied. Results show that the process parameters of RIP have a great effect on the shape of compact and density distribution. The higher the pressure and initial relative density, the better are the properties of compact. At the pressure of 160 MPa and initial relative density of 62％ ,the axial density difference of compact is less than 0. 4％ ,and the RIP tends to isostatic pressing and becomes a net shaping process.%为获得高聚物黏结粉末橡胶等静压净成型技术(rubber isostatic pressing,RIP),研究了成型工艺对橡胶等静压成型件性能的影响,探索了橡胶等静压成型过程粉末的形变规律,并对工艺参数进行优化.结果表明:成型压力越大,初始相对装药密度越高,橡胶等静压成型越接近等静压成型;成型压力160 MPa、初始相对装药密度62%时,橡胶等静压成型件的轴向密度差可以控制在0.4%,达到等静压成型密度波动控制范围,成型件外形尺寸规整,"象足"影响不明显,可实现复杂形状炸药件的近净成型,减少原材料损耗.