MIM
feed represents a balance relationship between powder and binder. The
appropriate proportion between them decided the success of a series of process
in injection molding. The design of feedstock should consider moulding
difficulty and final size requirements. Low molecular weight of binder can
reduce viscosity, easy to forming. Too much binder although can reduce
feedstock viscosity, it can't make a good contact between particles, lead to serious
deformation in de-binding and even collapse. If binder is so little, high
viscosity makes it easy to occur gaps, bringing difficulty injection. After
de-binding, those gaps will result in crack at the same time.
Original article link:http://www.zcmim.com/article/mim-feedstock_1.html
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