The recent advances in rock, coal, gas and oil drilling under continuously increasing loads and increased cutting speeds motivate the interest in and development of coarse and supercoarse sintered carbides. Complex drilling conditions are best simulated during in-service tests but their objectiveness and reliability are often problematic. Therefore, performance testing of real cutting tools in controlled conditions is of great importance. New grades of supercoarse hardmetals with nickel-based binders and relevant mining tools were designed and manufactured. Performance tests consisting in controlled rotary mining of a homogeneous artificial mineral block showed significantly lower wear of the experimental sinters (24–69%) in comparison with the classical cobalt matrix counterpart. The performed mechanical, tribological, thermal, fractographic and substructural investigations revealed the wear micromechanism, the correlations between the results obtained as well as the factors of the increased tool performance.

在不断增加的负荷和增加的切削速度下，岩石、煤炭、天然气和石油钻探的最新进展激发了人们对粗粒和超粗粒烧结碳化物的兴趣和发展。复杂的钻井条件最好在在役测试中进行模拟，但它们的客观性和可靠性往往存在问题。因此，在受控条件下对实际切削刀具进行性能测试非常重要。设计和制造了具有镍基粘合剂和相关采矿工具的新等级的超粗硬质合金。与经典钴基体对应物相比，均质人工矿物块的受控旋转开采的性能测试表明，实验烧结矿的磨损（24-69%）显着降低。进行机械、摩擦学、热学、