Plastics Magnet Manufacturing Process: Mixing, Kneading, and Injection Molding
-
T. Sakai
Abstract
To manufacture anisotropic plastic magnets with higher magnetic power, the compounding of Strontium Ferrite powder / plastics binder and injection molding processes should be optimized. In this study, we have carried out the optimization of injection molding machine design, and the mechanism analysis of the compounding operation. As a result, to generate effective strong magnetic fields during injection molding, the coiling system, mold structure, and pole shape were very important elements. Better Ferrite powder dispersion accelerated the particle orientation, which lead to higher magnetic power of the molded product when strong magnetic fields were applied. And then, particle dispersion depended on specific energy of the compounding machine unless excessive shearing force degraded Ferrite and plastics binder.
© 1991, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Comparison of Mechanical Properties of Rubber Products Molded by Transfer and Compression Methods**
- Numerical Simulation of the Advancing Front in Injection Molding
- A 3D Mold Filling Study with Significant Heat Effects
- Plastics Magnet Manufacturing Process: Mixing, Kneading, and Injection Molding
- Fibre Orientation Mechanisms for Injection Molding of Long Fibre Composites
- Multilayer Injection Molding
- Material and Numerical Aspects of Mathematical Modeling of Blow Molding**
- Prediction of Optimum Process Conditions for Rotomolded Products
- Flow Analysis of Sheet Molding Compounds in Compression Molding
- Modeling of Reactive Filling in Complex Cavities***
Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Comparison of Mechanical Properties of Rubber Products Molded by Transfer and Compression Methods**
- Numerical Simulation of the Advancing Front in Injection Molding
- A 3D Mold Filling Study with Significant Heat Effects
- Plastics Magnet Manufacturing Process: Mixing, Kneading, and Injection Molding
- Fibre Orientation Mechanisms for Injection Molding of Long Fibre Composites
- Multilayer Injection Molding
- Material and Numerical Aspects of Mathematical Modeling of Blow Molding**
- Prediction of Optimum Process Conditions for Rotomolded Products
- Flow Analysis of Sheet Molding Compounds in Compression Molding
- Modeling of Reactive Filling in Complex Cavities***
