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本研究初步探讨了黄培云教授导出的双对数方程在模压中的应用;给出了引入压坯形状参数的双对数方程。 log p=b_0+b_1(S_Z/S_Y)+(b_2+b_3(log s_Z/S_Y))log ln((d_m-d_0)d/(d_m-d)d_0)式中,b_i是回归系数,d_m是金属的理论密度,d_0是粉末的松装密度,d是压坯密度,p是施加的单位压制压力,s_Z、s_Y分别是压坯的比侧表面和比压制表面。本研究以图表的形式简化了上式的计算。由实验结果得到了雾化铁粉的真实对数压制模量b_0,摩擦系数μ和侧压系数(?)的积b_1/2 log e。
In this study, the application of the double logarithm equation derived by Professor Huang Peiyun was discussed. The double logarithm equation was introduced to introduce the shape parameters of green compacts. log p = b_0 + b_1 log_Z d_0 d_0 d_0 d_0 where b_i is a regression coefficient and d_m is The theoretical density of the metal, d_0 is the bulk density of the powder, d is the density of the green compact, p is the applied unit pressing pressure, s_Z, s_Y is the specific side surface and the pressed surface of the green compact, respectively. This study simplifies the above formula in the form of a graph. From the experimental results, the real logarithm modulus b_0, the friction coefficient μ and the lateral pressure coefficient (?) Of the atomized iron powder are obtained as b_1 / 2 log e.