Specialty Materials and Coatings
Pharmachine has developed numerous materials and coatings for enhancing both compression efficiency as well as extended tool life.
- Tungsten Carbide For highly corrosive powder or granules, tungsten carbide die inserts are provided because tungsten is an extremely hard material which improves the life of the tooling by 3 to 5 times compared to a standard tooling material.
- Hard Chrome Plating This helps attain corrosion resistance due to some products or environment that has comparatively higher levels of humidity and this also helps in lubricity or in other words non-sticking of the fine granular powder on the punch surface.
- Chromium Nitride Plating For sticky products, Chromium Nitride (CrN) plating can be provided which is very good for Anti-sticking. Besides sticking, this coating is also useful in corrosion resistance.
- Bakelite Relief In this case an undercut is applied to the lower punch tip providing a deeper and sharper relief which helps in removal of granules adhered to the die wall. It is essential to remove the granules setting inside the die wall which otherwise might jam the lower punch inside the die bore.