- freely available
Materials 2013, 6(12), 5878-5892; doi:10.3390/ma6125878
2. Measurements of Viscosity for SUS 316 L Feedstocks
3. Fabrication of Metal Plate with Internal Honeycomb Structure
3.1. Design of Sacrificed Polymer Insert with Structure
3.2. CAE Simulation for the Checking of Filling during the MIM Process
3.2.1. Selection of Material for Sacrificed Polymer Insert and Core Shift Analysis
|Material Type||Unit||PP Honam A-372||PP Sabic 513MNK10||HDPE Sabic CCX912||LDPE Sabic 1965T|
|Thermal Expansion Coefficient||°C−1||6.79 × 105||9.05 × 105||1.50 × 104||1.80 × 104|
|Glass Transition Temperature||°C||135||123||114||90|
|Holding Pressure *||%||80|
3.2.2. Metal Injection Molding Condition
3.3. Metal Injection Molding Process and Post-Processing
- A stainless steel metal plate with an internal structure was developed using the recommended metal injection molding process.
- The sacrificed polymer insert was designed to fix and prevent movement in the MIM mold cavity, and each cell or channel was connected so as to be removed without air trapping during the debinding and sintering processes. These connections would act as channels for fluid applications.
- The glass transition temperature of the sacrificed polymer insert would be of high-grade, and this insert should be maintained during the MIM process.
- CAE simulations to find a suitable sacrificed polymer insert and an adequate metal injection molding condition were recommended to reduce the development time.
- The shrinkage of the target part during post-processing was about 16.3% in thickness and 15.5% in width direction. The total thickness was approximately 2.0 mm.
Conflicts of Interest
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