In-Mold Rheology Curves with Feedstock and Mold Dimension
In this work, in-mold rheology curves were generated by injection molding machine and the effects of feedstock and mold dimension on in-mold rheology curve were studied. The rheology within mold in µMIM process depends on the shape and/or size of cavity and process conditions rather than intrinsic viscosity of feedstock. The optimum injection speed was determined in region of Newtonian flow of in-mold rheology curve. The dimensional deviation was below about 5 µm in the micro part injected with the optimum speed.
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
J. M. Jang et al., "In-Mold Rheology Curves with Feedstock and Mold Dimension", Advanced Materials Research, Vols. 291-294, pp. 3028-3031, 2011