Punching dies, like all other punching tools, must meet high demands. A punching die’s surface quality is essential for smooth and efficient stamping, which is why the surface processing methods for these tools are constantly being refined. OTEC offers stream finishing machines and process technology for efficient and optimal surface processing of punching dies. 

The aim of surface processing is to achieve a smooth, flawless contoured surface as the ideal basis for subsequent coating processes. Surface roughness greatly affects the durability and effectiveness of the anti-wear coating of tools like punching dies. The optimum combination of tool coating and polishing can greatly enhance tool quality.

OTEC’s special stream finishing process can smooth punching die surfaces, perfectly preparing them for the coating. Droplets are removed and the tool is polished after the coating process. The interaction between processing with an OTEC stream finishing machine and the coating process can increase the tool’s output tenfold. Thanks to stream finishing, the coating adheres better, which protects the tool against wear. Processing additionally enhances the punching die’s surface quality. 

The stream finishing process is ideal for targeted processing of specific workpiece areas. 

The special design of OTEC’s steam finishing machines allows the flow angle to be adjusted to the grinding or polishing media, combined with a contour controlled motion sequence, this directs the flow to selected areas only. This enables control of material abrasion, down to the micrometer level. The process is characterized by high media flow speeds, which enable highly intensive processing with process times as short as a few minutes. 

Contact us today to request sample processing of your punching dies.