In the machining of carbide rolls, Halnn PCD notching mills, diamond engraving tools and PCBN/PCD turning inserts can be used. PCBN is mainly suitable for hardness range below HRA88, while PCD can be applied to carbide rolls of any hardness. In the turning case of carbide rolls, Halnn's BN-S300 solid CBN tool can be selected for roughing, but it is only recommended for carbide rolls below HRA88. For other cases, it is recommended to choose composite PCD tools for machining, because the hardness of composite PCD tools is higher than that of solid CBN tools, and the service life is longer.
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