CEMENTED CARBIDE INSERT FOR PARTING, GROOVING AND THREADING

摘要

A cutting tool insert for the steel under the wet condition, the segmented processing of HRSA and stainless steel, and the groove manufacturing and thread machining are provided. As to steel including material and coating and stainless lecture segmented processing, and the cutting tool insert for the groove manufacturing and thread machining, the material includes WC, 7.5 ~ 10.5 wt% Co, and 0.7 ~ 1.1 wt% Cr and 100 ~ 300 ppm Ti. And the coercive force of 21 ~ 27 kA / m the CW Cr rain of 0.77 ~ 0.97. And the CW Cr ratio is prescribed like next. CW Cr ratio =(magnetic % Co + 1.13*wt% Cr) / wt% Co. Here, the magnetic % Co the weight% of the magnetism Co the wt% Cr the weight% of the Cr within the cemented alloy the wt% Co is the weight% of the Co within the cemented alloy.