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以Ti粉为原料,高速压制内、外径分别为30和60 mm的圆环状及直径为20 mm的圆柱状两种试样,探讨冲击能量、装粉量等对压坯密度的影响,并寻求高速压制过程的合适表征方式。结果表明:对于内、外径分别为30和60 mm的圆环试样,当冲击能量为3.804 kJ时,可成形的压坯密度最大,为4.00 g/cm~3,致密度为88.9%;对于直径为20 mm的圆柱试样,当冲击能量为1.217 kJ时,可成形的压坯密度最大,为4.38 g/cm~3,致密度为97.4%.对于同种试样,压坯密度随冲击能量的增加而增大,随装粉量的增加而减小,质量能量密度能全面地表征试样大小、冲击能量和装粉量等不同参数下的压坯密度。
Using Ti powder as raw material, two kinds of cylindrical specimens with inner diameter and outer diameter of 30 mm and outer diameter of 60 mm and cylindrical specimens with diameter of 20 mm were pressed at high speed to investigate the influence of impact energy and powder loading on the density of green compact. And look for a suitable representation of the high-speed compression process. The results show that for the ring specimens with internal and external diameters of 30 and 60 mm respectively, the maximum density of formable ring is 4.00 g / cm ~ 3 and the density is 88.9% when the impact energy is 3.804 kJ. For the cylindrical specimen with a diameter of 20 mm, the maximum density of formable green compact is 4.38 g / cm 3 and the density is 97.4% when the impact energy is 1.217 kJ. For the same kind of sample, the density of compact The impact energy increases with the increase of the amount of powder, while the mass energy density can fully characterize the density of the compact under different parameters such as sample size, impact energy and powder loading.