Coarse-grained tungsten carbide powder has some special properties and special uses different from medium and fine-grained tungsten carbide powder, especially high-temperature tungsten carbide has a series of advantages such as less structural defects, high microhardness and small micro strain. Therefore, coarse-grained tungsten carbide powder has attracted more and more attention in various industrial fields. Coarse grained tungsten carbide powder is widely used in geological and mineral tools, stamping dies, oil drilling and production, hard surface materials and other fields. In recent years, high-quality coarse-grained tungsten carbide with high combined carbon, complete grain development, large grain size, low impurity content and few micro defects has become the goal pursued by many manufacturers.
In general. The worldwide research and development of W powder and tungsten carbide powder has a long history and is in the ascendant. Its research hotspots are obviously polarized. One direction is the research and development of ultra-fine (nano) tungsten carbide powder and the other is the research and development of large particle single crystal tungsten carbide. For coarse-grained tungsten carbide, its research hotspots have been from the research of reduction, kinetics of carbonization process, behavior of trace elements, morphology and particle size of powder, Change to the development of new process methods and new application fields. For example, after years of research in the manufacture of coarse-grained tungsten carbide powder for mining tools, it has reached a high level.
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