Abstract
A new isostatic pressing method named “Bingham semi-solid/fluid Isostatic Pressing (BIP)” has been developed in which Bignham semi-solid/fluid material is employed as a mold material to form a green body with complicated shape without the crack due to the spring-back of a rubber mold. In this paper, a few parameters of BIP process that influence the dimensional accuracy of a green body were investigated.The soaking with wax to the green body associated with applied pressure, powder size and the ratio of mold thickness-to-width was examined. Mixing the powders with different diameter and increasing the packing density could prevent the soaking. To get the green body with desired shape, the relation between the thickness of a mold and the dimensional accuracy was investigated. Granulated powder and non-granulated powder were compared to investigate their effect on the dimensional accuracy of a green body. Granulated powder was more effective than non-granulated powder.
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