What is Post-Treatment of Carbide Inserts?
![Post Treatment 2 Droplets on the face of a carbide insert before post treatment](https://www.machiningdoctor.com/wp-content/uploads/2021/01/Droplets.jpg)
All coatings have flaws in their surface uniformity caused by coating droplets and non-uniform grain size. Most modern grades add a post-treatment after the coating process. This treatment is usually sandblasting or tumbling, aiming to smoothen the finial coating layer, thus reducing the friction and, as a result, also the generated heat.
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