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PDC TABLE THICKNESS OPTIMIZATION
Among different parameters affecting PDC cutter longevity, diamond table thickness play an important roll. Thicker diamond table plus deeper leach concludes to higher drilling performance. Increased diamond volume and perceived improved toughness and wear resistance proved to be a benefit in certain applications
While the thickness of first generation of PDC cutters was 0.5 mm, it has reached to higher thickness today. SCT starts with 2mm diamond table thickness and in the latest run 4mm thick PDC layer has been produced. Although the results of single cutter tests of old and new SCT’s cutters show the same wear resistance, thicker diamond table has longer life-span.
Due to the longer duration spent on leaching process, the new thicker cutter finished cost has increase, however the better performance will justify higher production cost.
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