METHOD FOR PRODUCING SINTERED COMPOSITE ARTICLE

摘要

FIELD: processes.SUBSTANCE: group of inventions relates to production of sintered composite product containing cubic boron nitride particles dispersed in matrix from cemented carbide. Method comprises sintering a mixture comprising particles of cubic boron nitride in an amount of 4 wt% or less and powder of cemented carbide at temperatures below 1350 °C without application of pressure. Resulting article may be used as a part exposed to wear, as ring stabiliser of drill string in an oil or gas well, or as an insert in roller cone bit.EFFECT: higher wear resistance of articles.11 cl, 2 tbl, 1 ex